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NXP Semiconductors P89LPC9321 UM10310 User's Manual

1. UM10310 P89LPC9321 User manual Rev 01 1 December 2008 User manual Document information Info Content Keywords P89LPC9321 Abstract Technical information for the P89LPC9321 device founded by Philips NXP Semiconductors UM1 031 0 P89LPC9321 User manual Revision history Rev Date Description 01 20081201 Initial version Contact information For more information please visit http www nxp com For sales office addresses please send an email to salesaddresses nxp com UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 2 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual 1 Introduction The P89LPC9321 is a single chip microcontroller designed for applications demanding high integration low cost solutions over a wide range of performance requirements The P89LPC9321 is based on a high performance processor architecture that executes instructions in two to four clocks six times the rate of standard 80C51 devices Many system level functions have been incorporated into the P89LPC9321 in order to reduce component count board space and system cost 1 1 Pin configuration P2 0 ICB P2 7 ICA P2 1 0CD C 2 6 P0 0 CMP2 KBIO PO 1 CIN2B KBI1 P1 7 0CC 2 2 2 1 6 1 5 5 PO 4 CIN1A KBI4 Vss 5
2. 70 12 data register 71 2 slave address register 71 12 control 72 2 Status register 73 2 SCL duty cycle registers 25 and bakes Seas sed anes 73 12 operation modes 74 Master Transmitter mode 74 Master Receiver 75 Slave Receiver mode 76 Slave Transmitter 77 Serial Peripheral Interface 84 Configuring the 88 Additional considerations for a 89 Additional considerations for a master 89 Mode change on SS 89 Write 90 Data 90 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 138 of 139 NXP Semiconductors UM10310 12 7 13 13 1 13 2 13 3 13 4 13 5 13 6 13 7 14 15 15 1 15 2 15 3 15 4 15 5 15 6 16 16 1 16 2 17 17 1 17 2 17 3 17 4 17 5 17 6 17 7 18 18 1 18 2 18 3 18 4 18 5 18 6 18 7 18 8 18 9 18 10 18 11 18 12 18 13 18 14 18 15 18 16 18 17 18 18 SPI clock prescaler select 94 Analog comparators 94 Comparator configuration 94 Internal reference
3. 128 Table 116 Sector Security Bytes bit allocation 128 Table 117 Sector Security Bytes SECx bit description 129 Table 118 Effects of Security Bits 129 Table 119 Boot Vector BOOTVEC bit allocation 129 Table 120 Boot Vector BOOTVEC bit description 129 Table 121 Boot Status BOOTSTAT bit allocation 129 Table 122 Boot Status BOOTSTAT bit description 130 Table 123 Instruction set summary 131 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 136 of 139 NXP Semiconductors UM10310 22 Figures P89LPC9321 User manual Fig 1 Fig 2 Fig 3 Fig 4 Fig 5 Fig 6 Fig 7 Fig 8 Fig 9 Fig 10 Fig 11 Fig 12 Fig 13 Fig 14 Fig 15 Fig 16 Fig 17 Fig 18 Fig 19 Fig 20 Fig 21 Fig 22 Fig 23 Fig 24 Fig 25 Fig 26 Fig 27 Fig 28 Fig 29 Fig 30 Fig 31 Fig 32 Fig 33 Fig 34 Fig 35 Fig 36 Fig 37 Fig 38 Fig 39 Fig 40 Fig 41 Fig 42 Fig 43 Fig 44 Fig 45 Fig 46 Fig 47 UM10310_1 TSSOP28 pin 3 PLCC28 pin configuration 4 DIP28 pin 4 Functional diagram 8 Block diagram 9 P89LPC9321 memory 20 Using the crystal oscillator 23 Block diagram
4. 3 1 1 Pin 3 1 2 Pin description 5 1 3 Functional 8 1 4 Block 9 1 5 Special function registers 10 1 6 Memory organization 20 2 Glocks er e Ix RR x AFER eas 21 2 1 Enhanced 21 2 2 Clock definitions 21 2 2 1 Oscillator Clock 21 2 3 External crystal oscillator option 21 2 3 1 Low speed oscillator option 21 2 3 2 Medium speed oscillator option 22 2 9 3 High speed oscillator option 22 2 4 Clock 22 2 5 On chip RC oscillator option 22 2 6 Watchdog oscillator option 23 2 7 External clock input option 23 2 8 Clock sources switch on the fly 24 2 9 Oscillator Clock OSCCLK wake up delay 25 2 10 CPU Clock CCLK modification DIVM Ieglster uos wes E RE Uni b ES 25 2 11 Low power select 25 3 Interrupts 25 3 1 Interrupt priority structure 26 3 2 External Interrupt pin glitch suppression 27 4 poris 2 rrr m RR Ro 28 4 1 Port configurations 29 4 2 Quasi bidirectional output configuration 29 4 3 Open drain ou
5. 16 BIT UP DOWN TIMER WITH RELOAD COMPARE CHANNELS A TO D 16 BIT CAPTURE REGISTER ICRxH L 10 BIT DIVIDER m gt 4 32 x PLL DIVIDER Fig 21 Capture Compare Unit block diagram NOISE EDGE FILTER SELECT X INTERRUPT FLAG TICF2x SET CAPTURE CHANNELS A B 002aab009 9 3 Basic timer operation The Timer is a free running up down counter counting at the pace determined by the prescaler The timer is started by setting the CCU Mode Select bits TMOD21 and TMOD20 in the CCU Control Register 0 TCR20 as shown in the table the TCR20 register description Table 37 The CCU direction control bit TDIR2 determines the direction of the count TDIR2 0 Count up TDIR2 1 Count down If the timer counting direction is changed while the counter is running the count sequence will be reversed in the CCUCLK cycle following the write of TDIR2 The timer can be written or read at any time and newly written values will take effect when the prescaler overflows The timer is accessible through two SFRs TL2 low byte and TH2 high byte A third 16 bit SFR TOR2H TOR2L determines the overflow reload value TL2 TH2 and TOR2H TOR2L will be 0 after a reset Up counting When the timer contents are FFFFH the next CCUCLK cycle will set the counter value to the contents of TOR2H TOR2L Down counting When the timer contents are 0000H the next CCUCLK cycle will set the counter value to
6. 4 PGATRIM1 If set PGA1 is grounded If cleared normal operation mode 6 5 PGASEL11 PGA input channel selection PGASEL10 00 CIN2B using PGA 01 CIN2A using PGA 10 CIN1B using PGA 11 CIN1A using PGA 7 ENPGA1 PGA1 enable If set enable PGA1 If cleared disable PGA1 Table 88 PGA1 Control register B 1 address FFE4h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol PGAENOF F1 Reset 0 0 0 0 0 0 0 0 Table 89 PGA1 Control register PGACON1B address FFE4h bit description Bit Symbol Description 0 PGAENOFF1 PGA offset voltage enable bit When set enable the offset voltage on the PGA 1 7 Reserved UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 99 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual 14 Keypad interrupt KBI The Keypad Interrupt function is intended primarily to allow a single interrupt to be generated when Port 0 is equal to or not equal to a certain pattern This function can be used for bus address recognition or keypad recognition The user can configure the port via SFRs for different tasks There are three SFRs used for this function The Keypad Interrupt Mask Register KBMASK is used to define which input pins connected to Port 0 are enabled to trigger the interrupt The Keypad Pattern Register KBPATN is used to define a pattern that is compared to the value of Port 0 The Keypad Interrupt Flag KBIF in
7. SS if SSIG bit 0 4 t 002aaa936 1 Not defined Fig 44 SPI master transfer format with CPHA 0 UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 93 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Clock cycle 1 i SPICLK CPOL 0 SPICLK CPOL 1 0 S DORD 1 MSB MISO output SS if SSIG bit 0 _ 1 002 937 1 Not defined Fig 45 SPI master transfer format with CPHA 1 12 7 SPI clock prescaler select The SPI clock prescaler selection uses the SPR1 SPRO bits in the SPCTL register see Table 78 13 Analog comparators Two analog comparators are provided on the P89LPC9321 Input and output options allow use of the comparators in a number of different configurations Comparator operation is such that the output is a logic 1 which may be read in a register and or routed to a pin when the positive input one of two selectable pins is greater than the negative input selectable from a pin or an internal reference voltage Otherwise the output is a zero Each comparator may be configured to cause an interrupt when the output value changes The comparators inputs can be amplified by using PGA1 module The PGA1 ca
8. UART break detect AUxR1 6 brownout detect reset 002aae129 Fig 14 Block diagram of reset Table 22 Reset Sources register RSTSRC address DFh bit allocation Bit 7 6 5 4 3 2 1 0 Symbol BOIF BOF POF R BK R WD R SF EX Reset x 0 1 1 0 0 0 0 1 The value shown is for a power on reset Other reset sources will set their corresponding bits Reset Sources register RSTSRC address DFh bit description Bit Symbol Description external reset Flag When this bit is logic 1 it indicates external pin reset Cleared by software by writing logic to the bit or a Power on reset If RST is still asserted after the Power on reset is over R EX will be set software reset Flag Cleared by software by writing a logic O to the bit or a Power on reset Watchdog Timer reset flag Cleared by software by writing a logic 0 to the bit or a Power on reset NOTE UCFG1 7 must be 1 break detect reset If a break detect occurs and EBRR AUXR1 6 is set to logic 1 a system reset will occur This bit is set to indicate that the system reset is caused by a break detect Cleared by software by writing a logic 0 to the bit or on a Power on reset Power on Detect Flag When Power on Detect is activated the POF flag is set to indicate an initial power up condition The POF flag will remain set until cleared by software by writing a logic 0 to the bit Note On a Power on reset both BO
9. 02h R5 data to write R7 register address 002 UCFG1 012 UCFG2 02 Boot Vector 03 Status Byte 04 to 07 reserved 08 Security Byte 0 09 Security Byte 1 OA Security Byte 2 Security Byte 3 0 Security Byte 4 00 Security Byte 5 OE Security Byte 6 OF Security Byte 7 10 Clear Configuration Protection Return parameter s R7 status Carry set on error clear on no error NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 125 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 110 IAP function calls continued IAP function IAP call parameters Misc Read Input parameters 03h R7 register address 00 UCFG1 01 UCFG2 02 Boot Vector 03 Status Byte 04 to 07 reserved 08 Security Byte 0 09 Security Byte 1 OA Security Byte 2 OB Security Byte 3 0 Security Byte 4 OD Security Byte 5 OE Security Byte 6 OF Security Byte 7 Return parameter s R7 register data if no error else error status Carry set on error clear on no error Erase Sector Page Input parameters requires key ACC 04h R4 address MSB R5 address LSB R7 OOH erase page or 01H erase sector Return parameter s R7 data Carry set on error clear on no error UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 126 of 139 NXP Semiconductors UM1 031 0 P89LPC9321
10. Fig 30 Transmission with without double buffering single buffering DBMOD SSTAT 7 0 early interrupt INTLO SSTAT 6 0 is shown i i i 1 1 1 1 1 1 double buffering DBMOD SSTAT 7 1 early interrupt INTLO SSTAT 6 0 is shown no ending TX interrupt DBISEL SSTAT 4 0 double buffering DBMOD SSTAT 7 1 early interrupt INTLO SSTAT 6 0 is shown with ending TX interrupt DBISEL SSTAT 4 1 002aaa928 10 18 The 9th bit bit 8 in double buffering Modes 1 2 and 3 UM10310_1 If double buffering is disabled DBMOD i e SSTAT 7 0 TB8 can be written before or after SBUF is written provided TB8 is updated before that TB8 is shifted out TB8 must not be changed again until after TB8 shifting has been completed as indicated by the Tx interrupt NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 67 of 139 NXP Semiconductors UM1 031 0 UM10310_1 10 19 P89LPC9321 User manual If double buffering is enabled TB8 MUST be updated before SBUF is written as TB8 will be double buffered together with SBUF data The operation described in the Section 10 17 Transmit interrupts with double buffering enabled Modes 1 2 and 3 becomes as follows The double buffer is empty initially The CPU writes to TB8 The CPU writes to SBUF The SBUF TB8 data is loaded to the shift register and a Tx interrupt is generated im
11. XXXX XXXX 9F 9E 9D 9C 9B 9A 99 98 SMO FE SM1 SM2 REN TB8 RB8 TI RI 00 0000 0000 DBMOD INTLO CIDIS DBISEL FE BR OE STINT 00 0000 0000 07 0000 0111 SSIG SPEN DORD MSTR CPOL CPHA SPR1 SPRO 04 0000 0100 SPIF WCOL 00 00 00 0000 0000 T1M2 TOM2 00 xxxO 8F 8E 8D 8C 8B 8A 89 88 TF1 1 IE1 IT1 IEO ITO 00 0000 0000 PLEEN HLTRN HLTEN ALTCD ALTAB TDIR2 TMOD21 TMOD20 00 0000 0000 TCOU2 PLLDV 3 PLLDV 2 PLLDV 1 PLLDV O 00 0000 Jesf 1666541684 OLEOLINN SIOJONPUODIWIS dXN jenuew sn 8002 10 6630 1 F OLEOLWN 78002 7 78 Table 2 Special function registers continued indicates SFRs that are bit addressable Name THO TH1 TH2 TICR2 TIFR2 TISE2 TLO TL1 TL2 TMOD TOR2H TOR2L TPCR2H TPCR2L TRIM WDCON Description SFR addr Timer 0 high 8CH Timer 1 high 8DH CCU timer high CDH CCU interrupt control register CCU interrupt CCU interrupt status encode register Timer 0 low 8AH Timer 1 low 8BH CCU timer low CCH Timer 0 and 1 89H mode CCU reload CFH register high CCU reload CEH register low Prescaler CBH control register high Prescaler CAH control register low Internal oscillator trim register Watchdog control register 96H A7H
12. After power up all l O pins except P1 5 may be configured by software Pin P1 5 is input only Pins P1 2 and P1 3 are configurable for either input only or open drain Every output on the P89LPC9321 has been designed to sink typical LED drive current However there is a maximum total output current for all ports which must not be exceeded Please refer to the P89LPC9321 data sheet for detailed specifications All ports pins that can function as an output have slew rate controlled outputs to limit noise generated by quickly switching output signals The slew rate is factory set to approximately 10 ns rise and fall times Table 14 Port output configuration Port pin Configuration SFR bits PxM1 y PxM2 y Alternate usage Notes P0 0 POM1 0 POM2 0 KBIO CMP2 PO 1 POM1 1 POM2 1 KBI1 CIN2B Refer to Section 4 6 Port 0 and 0 2 1 2 2 2 KBI2 2 runes Tor usage as analog inputs P0 3 POM1 3 POM2 3 4 1 4 POM2 4 4 CIN1A 5 1 5 2 5 KBI5 CMPREF P0 6 POM1 6 POM2 6 KBI6 CMP1 P0 7 POM1 7 POM2 7 KBI7 1 P1 0 P1M1 0 1 2 0 TXD P1 1 1 1 1 1 2 1 1 2 P1M1 2 1 2 2 TO SCL Input only or open drain P1 3 P1M1 3 P1M2 3 INTO SDA input only or open drain P1 4 P1M1 4 P1M2 4 INT P1 5 P1M1 5 P1M2 5 RST P1 6 P1M1 6 P1M2 6 OCB P1 7 P1M1 7 P1M2 7 OCC P2 0 P2M1 0 P2M2 0 ICB P2 1 P2M1 1 2 2 1 OCD P2 2 P2M1 2 P2M2
13. Bit functions and addresses Reset value MSB LSB Hex Binary 00 0000 0000 00 0000 0000 00 0000 0000 TOIE2 TOCIE2D TOCIE2C TOCIE2B TOCIE2A TICIE2B TICIE2A 00 0000 0x00 TOIF2 TOCF2D TOCF2C TOCF2B TOCF2A TICF2B TICF2A 00 0000 0x00 ENCINT 2 ENCINT 1 ENCINT O 00 xxxx x000 00 0000 0000 00 0000 0000 00 0000 0000 T1GATE T1C T 1 1 1 0 0 TOM1 TOMO 00 0000 0000 00 0000 0000 00 0000 0000 TPCR2H 1 2 0 00 00 TPCR2L 7 TPCR2L 6 TPCR2L 5 TPCR2L 4 TPCR2L 3 TPCR2L 2 TPCR2L 1 TPCR2L 0 00 0000 0000 RCCLK ENCLK TRIM 5 TRIM 4 TRIM 3 TRIM 2 TRIM 1 TRIM O 1516 PRE2 PRE1 PREO WDRUN WDTOF WDCLK 116 Jesf 1666541684 OLEOLINN SJ0jonpuoolul9S dXN jenuew sn 8002 1equie2eg L0 65130 81 OLEOLWN 78002 7 78 dXN Table 2 Special function registers continued indicates SFRs that are bit addressable Name Description SFR Bit functions and addresses Reset value addr LSB Hex Binary WDL Watchdog load FF 1111 1111 WFEED1 Watchdog C2H feed 1 WFEED2 Watchdog C3H feed 2 1 2 3 4 5 All ports are in input only high impedance state after power up BRGR1 and BRGRO must only be written if BRGEN in BRGCON SFR is logic 0 If any are written while BRGEN 1 the result is unpredictable The RSTSRC register reflects the cause of the UM10310 reset except
14. The WE flag is CLEARED by writing the Clear Write Enable OBH command to followed by a key value 96H to FMDATA or by a reset FMCON 0x0B FMDATA 0x96 The ISP function in this device sets the WE flag prior to calling the IAP routines The IAP function in this device executes a Clear Write Enable command following any write operation If the Write Enable function is active user code which calls IAP routines will need to set the Write Enable flag prior to each IAP write function call Configuration byte protection In addition to the hardware write enable protection described above the configuration bytes may be separately write protected These configuration bytes include UCFG1 UCFG2 BOOTVEC and BOOTSTAT This protection applies to both ISP and IAP modes and does not apply to ICP or parallel programmer modes If the Configuration Write Protect bit CWP in BOOTSTAT 6 is a logic 1 writes to the configuration bytes are disabled If the Configuration Write Protect bit CWP is a logic 0 writes to the configuration bytes are enabled The CWP bit is set by programming the BOOTSTAT register This bit is cleared by using the Clear Configuration Protection CCP command in IAP or ISP The Clear Configuration Protection command can be disabled in ISP or IAP mode by programming the Disable Clear Configuration Protection bit DCCP in BOOTSTAT 7 to a logic 1 When DCCP is set the CCP command may still be used in ICP or p
15. 96 Comparator input pins 96 Comparator 96 Comparators and power reduction modes 97 Comparators configuration example 97 Programmable Gain Amplifier 98 Keypad interrupt 100 Watchdog timer WDT 101 Watchdog function 101 Feed 102 Watchdog clock source 105 Watchdog Timer in Timer mode 106 Power down operation 107 Periodic wake up from power down without an external 5 107 Additional features 107 Software reset 108 Dual Data Pointers 108 Data 109 Data EEPROM 110 Data EEPROM write 110 Hardware reset 111 Multiple writes to the DEEDAT register 111 Sequences of writes to DEECON and DEEDAT IegIslers c sea San RR 111 Data EEPROM Row Fill 111 Data EEPROM Block Fill 112 Flash memory 112 General description 112 eens 112 Flash programming and erase 113 Using Flash as data storage IAP Lite 113 In circuit programming ICP 117 ISP and IAP capabilities of the P89LPC93
16. A simple noise filter can be enabled on the input capture input When the Input Capture Noise Filter ICNFx bit is set the capture logic needs to see four consecutive samples of the same value in order to recognize an edge as a capture event The inputs are sampled every two CCLK periods regardless of the speed of the timer An event counter can be set to delay a capture by a number of capture events The three bits ICECx2 ICECx1 and ICECx0 in the CCCRx register determine the number of edges the capture logic has to see before an input capture occurs When a capture event is detected the Timer Input Capture x x is A or B Interrupt Flag TICF2x TIFR2 1 or TIFR2 0 is set If EA and the Timer Input Capture x Enable bit TICIE2x TICR2 1 or TICR2 0 is set as well as the ECCU IEN1 4 bit is set the program counter will be vectored to the corresponding interrupt The interrupt flag must be cleared manually by writing a logic O to it When reading the input capture register ICRxL must be read first When ICRxL is read the contents of the capture register high byte are transferred to a shadow register When ICRxH is read the contents of the shadow register are read instead If a read from ICRxL is followed by another read from ICRxL without ICRxH being read in between the new value of the capture register high byte from the last ICRxL read will be in the shadow register Table 41 Event delay counter for input capture 2
17. External interrupts INTO INT1 when programmed to level triggered mode Keyboard Interrupt Real time Clock System Timer and the crystal oscillator circuitry if this block is using it unless RTCPD i e PCONA 7 is logic 1 Note Using the internal RC oscillator to clock the RTC during power down may result in relatively high power consumption Lower power consumption can be achieved by using an external low frequency clock when the Real time Clock or watchdog timer is running during power down UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 35 of 139 NXP Semiconductors UM10310 P89LPC9321 User manual Table 18 Power Control register PCON address 87h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol SMOD1 SMODO BOI GF1 GFO PMOD1 PMODO Reset 0 0 0 0 0 0 0 Table 19 Power Control register PCON address 87h bit description Bit Symbol Description 0 PMODO Power Reduction Mode see Section 5 3 PMOD1 2 GFO General Purpose Flag 0 May be read or written by user software but has no effect on operation 3 GF1 General Purpose Flag 1 May be read or written by user software but has no effect on operation 4 Brownout Detect Interrupt Enable When logic 1 Brownout Detection will generate interrupt 5 lt Reserved 6 SMODO Framing Error Location When logic 0 bit 7 of SCON is accessed as SMO for the UART When logic 1 bit 7 o
18. Table 25 Timer Counter Mode register TMOD address 89h bit description Bit Symbol Description 0 TOMO Mode Select for Timer 0 These bits are used with the 2 bit in the TAMOD register to determine the 1 0 1 Timer 0 mode see Table 27 2 _ Timer or Counter selector for Timer 0 Cleared for Timer operation input from CCLK Set for Counter operation input from TO input pin TOGATE Gating control for Timer 0 When set Timer Counter is enabled only while the INTO is high and the TRO control pin is set When cleared Timer 0 is enabled when the TRO control bit is set 4 Mode Select for Timer 1 These bits are used with the T1M2 bit in the TAMOD register to determine the 5 Timer 1 mode see Table 27 6 T1C T _ Timer or Counter Selector for Timer 1 Cleared for Timer operation input from CCLK Set for Counter operation input from T1 input pin 7 Gating control for Timer 1 When set Timer Counter is enabled only while the pin is high and the TR1 control pin is set When cleared Timer 1 is enabled when the TR1 control bit is set UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 39 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 26 Timer Counter Auxiliary Mode register TAMOD address 8Fh bit allocation Bit 7 6 5 4 3 2 1 0 Symbol T1M2 TOM2 Reset x x 0 x x x 0 Table
19. When writing to timer high byte TH2 the value written is stored in a shadow register When TL2 is written the contents of TH2 s shadow register is transferred to TH2 at the same time that TL2 gets updated Thus TH2 should be written prior to writing to TL2 If a write to TL2 is followed by another write to TL2 without TH2 being written in between the value of TH2 will be transferred directly to the high byte of the timer If the 16 bit CCU Timer is to be used as an 8 bit timer the user can write FFh for upcounting or for downcounting to TH2 When TL2 is written FFh TH2 for upcounting and 00h for downcounting will be loaded to CCU Timer The user will not need to rewrite TH2 again for an 8 bit timer operation unless there is a change in count direction When reading the timer TL2 must be read first When TL2 is read the contents of the timer high byte are transferred to a shadow register in the same PCLK cycle as the read is performed When TH2 is read the contents of the shadow register are read instead If a read from TL2 is followed by another read from TL2 without TH2 being read in between the high byte of the timer will be transferred directly to TH2 Table 33 CCU prescaler control register high byte TPCR2H address CBh bit allocation Bit 7 6 5 4 3 2 1 0 Symbol TPCR2H 1 2 0 Reset 0 0 Table 34 CCU prescaler control register high byte TPCR2H address CBh bit
20. 2 2 Reset 0 0 x x x x x x Table 80 SPI Status register SPSTAT address Eth bit description Bit Symbol Description 0 5 reserved 6 WCOL Write Collision Flag The WCOL bit is set if the SPI data register SPDAT is written during a data transfer see Section 12 5 Write collision The WCOL flag is cleared in software by writing a logic 1 to this bit 7 SPIF SPI Transfer Completion Flag When a serial transfer finishes the SPIF bit is set and an interrupt is generated if both the ESPI IEN1 3 bit and the EA bit are set If SS is an input and is driven low when SPI is in master mode and SSIG 0 this bit will also be set see Section 12 4 Mode change on 55 The SPIF flag is cleared in software by writing a logic 1 to this bit NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 86 of 139 NXP Semiconductors UM1 031 0 UM10310_1 P89LPC9321 User manual Table 81 SPI Data register SPDAT address E3h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol LSB Reset 0 0 0 0 0 0 0 0 slave 8 BIT SHIFT __ REGISTER master MISO 8 BIT SHIFT 4 REGISTER MOSI 1 1 1 1 1 1 1 1 1 1 1 1 SPICLK SPICLOCK 7 GENERATOR PORT 1 1 1 1 1 1 1 1 1 1 1 1 002 901 Fig 39 SPI single master single slave configuration In Figure 39 SSIG SPCTL 7 for the slave
21. KBI3 CIN1B gt 5 gt CMPREF 6 gt CMP1 KBI7 Ti CLKOUT 4 XTAL2 lt XTAL1 Functional diagram PORT 0 PORT 34 Rp En Vpp Vss P89LPC9321 002 103 gt PORT 1 gt PORT 2 TXD 4 gt 10 INTO INT RST OCB OCC gt SCL lt gt SDA ICB OCD lt gt MOSI MISO SS lt gt SPICLK gt lt ICA NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 8 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual 1 4 Block diagram P89LPC9321 ACCELERATED 2 CLOCK 80C51 CPU 4 0 8kB TXD Sp uw Jem internal bus 256 BYTE SCL DATA RAM C I C BUS SDA SPICLK 512 BYTE MOSI AUXILIARY RAM MISO 55 REAL TIME CLOCK DATA EEPROM SYSTEM TIMER C 3 MERI D PORT 3 TIMER 1 T1 P CONFIGURABLE 1 CIN2B Paro 5 CONFIGURABLE vos ane CONFIGURABLE I Os COMPARATORS CMP1 PORT 1 CIN1B Piro C T conrisuRagLE vos kK OCA CCU CAPTURE oep 7 0 COMPARE UNIT OCD ICA ICB 24 2 INTERRUPT WATCHDOG TIMER AND OSCILLATOR NY PROGRAMMABLE CPU OSCILLATOR DIVIDER clock CRYSTAL XTAL1 ON CHIP RC POWER MONITOR OR 1 CONFIGURABLE OSCILLATOR POWER ON RESET RESONATOR OSC
22. UM10310 UM10310_1 P89LPC9321 User manual Table 55 Serial Port Control register SCON address 98h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol SMO FE 5 1 SM2 REN TB8 RB8 RI Reset X X X X X X 0 0 Table 56 Serial Port Control register SCON address 98h bit description Bit Symbol Description 0 RI Receive interrupt flag Set by hardware at the end of the 8th bit time in Mode 0 or approximately halfway through the stop bit time in Mode 1 For Mode 2 or Mode 3 if SMODO it is set near the middle of the 9th data bit bit 8 If SMODO 1 itis set near the middle of the stop bit see SM2 SCON 5 for exceptions Must be cleared by software 1 TI Transmit interrupt flag Set by hardware at the end of the 8th bit time in Mode 0 or at the stop bit see description of INTLO bit in SSTAT register in the other modes Must be cleared by software 2 RB8 The 9th data bit that was received in Modes 2 and 3 In Mode 1 SM2 must be 0 RB8 is the stop bit that was received In Mode 0 RB8 is undefined TB8 The 9th data bit that will be transmitted in Modes 2 and 3 Set or clear by software as desired 4 REN Enables serial reception Set by software to enable reception Clear by software to disable reception 5 5 2 Enables the multiprocessor communication feature in Modes 2 and 3 In Mode 2 or 3 if SM2 is set to 1 then RI will not be activated if the received 9th data bit RB8 is 0 In Mode 0 SM2 should be 0 In Mo
23. XRL A data Exclusive OR immediate to A 2 1 64 dir A Exclusive OR A to direct byte 2 1 62 XRL dir data Exclusive OR immediate to direct byte 3 2 63 CLR A Clear A 1 1 4 Complement 1 1 F4 SWAP A Swap Nibbles of A 1 1 C4 RLA Rotate A left 1 1 23 RLC A Rotate A left through carry 1 1 33 Rotate A right RRA 1 1 03 A Rotate A right through carry 1 1 13 DATA TRANSFER MOV A Rn Move register to A 1 1 E8 to EF MOV A dir Move direct byte to A 2 1 E5 Move indirect memory to A MOV A Ri 1 1 E6 to E7 MOV A data Move immediate to A 2 1 74 MOV Rn A Move A to register 1 1 F8 to FF MOV Rn ir Move direct byte to register 2 2 A8 to AF MOV Rn data Move immediate to register 2 1 78 to 7F MOV dir A Move A to direct byte 2 1 F5 MOV dir Rn Move register to direct byte 2 2 88 to 8F MOV dir dir Move direct byte to direct byte 3 2 85 MOV dir Ri Move indirect memory to direct byte 2 2 86 to 87 MOV dir data Move immediate to direct byte 3 2 75 MOV Ri A Move A to indirect memory 1 1 F6 to F7 MOV Ri dir Move direct byte to indirect memory 2 2 A6 to A7 MOV Ri data Move immediate to indirect memory 2 1 76 to 77 MOV DPTR data Move immediate to data pointer 3 2 90 MOVC A A DPTR Move code byte relative DPTR to A 1 2 93 MOVC Move code byte relative PC to A 1 2 94 MOVX A Ri Move external data A8 to A 1 2 E2 to E3 MOVX A Move external data A16 to A 1 2 EO MOVX Ri A Move A to external dat
24. 00 the user must take great caution in a write to the DEEDAT register It is strongly recommended that the user disables interrupts prior to a write to the DEEDAT register and enable interrupts after all writes are over An example is as follows CLR EA disable interrupt MOV DEEDAT GRO write data pattern MOV DEEADR R1 write address for the data SETB EA wait for the interrupt orpoll the DEECON 7 EEIF bit Hardware reset During any hardware reset including watchdog and system timer reset the state machine that remembers a write to the DEEDAT register will be initialized If a write to the DEEDAT register occurs followed by a hardware reset a write to the DEEADR register without a prior write to the DEEDAT register will result in a read cycle Multiple writes to the DEEDAT register If there are multiple writes to the DEEDAT register before a write to the DEEADR register the last data written to the DEEDAT register will be written to the corresponding address Sequences of writes to DEECON and DEEDAT registers A write to the DEEDAT register is considered a valid write i e will trigger the state machine to remember a write operation is to commence if DEECON 5 4 00 If these mode bits are already 00 and address bit 8 is correct there is no need to write to the DEECON register prior to a write to the DEEDAT register Data EEPROM Row Fill A row 64 bytes can be filled with a predetermined data p
25. 24 Table 42 Output compare pin behavior 54 Table 9 Oscillator type selection for clock switch 25 Table 43 CCU control register 1 TCR21 address F9h bit Table 10 Interrupt priority level 26 allocation 55 Table 11 Summary of interrupts 27 Table 44 CCU control register 1 TCR21 address F9h bit Table 12 Number of I O pins available 28 55 Table 13 output configuration settings 29 Table 45 CCU interrupt status encode register TISE2 Table 14 Port output configuration 32 address DEh bit allocation 57 Table 15 BOD Trip points configuration 34 Table 46 CCU interrupt status encode register TISE2 Table 16 BOD Reset and BOD Interrupt configuration 34 address DEh bit description 57 Table 17 Power reduction modes 35 Table 47 CCU interrupt flag register TIFR2 address E9h Table 18 Power Control register PCON address 87h bit bit allocation 58 allocation ste eee eee 36 Table 48 CCU interrupt flag register TIFR2 address Table 19 Power Control register PCON address 87h bit bit description 58 description 36 Table 49 CCU interrupt control register TICR2 address Table 20 Power Control
26. FCOX bits always read zero Note This bit has a different function in PWM mode When an output compare pin is enabled and connected to the compare latch the state of the compare pin remains unchanged until a compare event or forced compare occurs Table 39 Capture compare control register CCRx address Exh bit allocation Bit Symbol Reset 6 5 4 3 2 1 0 ICECx2 ICEOx1 ICECxO ICESx ICNFx FCOx OCMx1 OCMx0 0 0 0 0 0 0 0 Table 40 Capture compare conirol register CCRx address Exh bit description Bit Symbol Description 0 Output Compare x Mode See Table 42 Output compare pin behavior 1 OCMx1 2 FCOx Force Compare X Output Bit When set invoke a force compare 3 ICNFx Input Capture x Noise Filter Enable Bit When logic 1 the capture logic needs to see four consecutive samples of the same value in order to recognize an edge as a capture event The inputs are sampled every two CCLK periods regardless of the speed of the timer 4 ICESx Input Capture x Edge Select Bit When logic 0 Negative edge triggers a capture When logic 1 Positive edge triggers a capture 5 ICECx0 Capture Delay Setting Bit 0 See Table 41 for details 6 ICEOx1 Capture Delay Setting Bit 1 See Table 41 for details 7 CECx2 Capture Delay Setting Bit 2 See Table 41 for details When the user writes to change the output compare value the values written to OCRH2x and OCRL2x are transferred to two 8 bit shadow register
27. FMADRL FMCON FMDATA I2ADR I2CON I2DAT Description SFR addr Data EEPROM 2 data register Data EEPROM F3H address register CPU clock 95H divide by M control Data pointer 2 bytes Data pointer 83H high Data pointer 82H low Program flash E7H address high Program flash E6H address low Program flash EAH control Read Program flash E4H control Write Program flash 5 data 12 slave DBH address register Bit address 2 control D8H register 2 data DAH register Bit functions and addresses Reset value MSB LSB Hex Binary 00 0000 0000 00 0000 0000 00 0000 0000 00 0000 0000 00 0000 0000 00 0000 0000 00 0000 0000 BUSY SV Ol 70 0111 0000 FMCMD 7 FMCMD 6 FMCMD 5 FMCMD 4 FMCMD 3 FMCMD 2 FMCMD 1 FMCMD 0 00 0000 0000 I2ADR 6 I2ADR 5 I2ADR 4 I2ADR 3 I2ADR 2 I2ADR 1 I2ADR 0 GC 00 0000 0000 DF DE DD DC DB DA D9 D8 2 5 5 SI AA CRSEL 00 x000 00x0 Jesf 1666541684 OLEOLINN SJ0jonpuoolul9S dXN jenuew sn 8002 1equie2eg L0 65149 EL OLEOLWN 78002 7 74 dXN Table 2 Special function registers continued indicates SFRs that are bit addressable Name 25 I2SCLL I2STAT ICRAH ICRAL ICRBH ICRBL IENO IEN1 IP1 SFR addr Description Serial clock DD
28. Note that except for the first character written when buffer is empty the location of the transmit interrupt is determined by INTLO When the first character is written the transmit interrupt is generated immediately after SBUF is written 5 CIDIS Combined Interrupt Disable When set 1 Rx and Tx interrupts are separate When cleared 0 the UART uses a combined Tx Rx interrupt like a conventional 80 51 UART This bit is reset to logic 0 to select combined interrupts 6 INTLO Transmit interrupt position When cleared 0 the Tx interrupt is issued at the beginning of the stop bit When set 1 the Tx interrupt is issued at end of the stop bit Must be logic 0 for mode 0 Note that in the case of single buffering if the Tx interrupt occurs at the end of a STOP bit a gap may exist before the next start bit 7 DBMOD Double buffering mode When set 1 enables double buffering Must be logic 0 for UART mode In order to be compatible with existing 80C51 devices this bit is reset to logic 0 to disable double buffering 10 10 More about UART Mode 0 In Mode 0 a write to SBUF will initiate a transmission At the end of the transmission SCON 1 is set which must be cleared in software Double buffering must be disabled in this mode Reception is initiated by clearing RI SCON 0 Synchronous serial transfer occurs and will be set again at the end of the transfer When RI is cleared the reception of the next charac
29. input KBI5 Keyboard input 5 P0 6 CMP1 KBI6 20 P0 6 Port 0 bit 6 High current source 1 Comparator 1 output KBI6 Keyboard input 6 PO 7 T1 KBI7 19 y o P0 7 Port 0 bit 7 High current source y o T1 Timer counter 1 external count input or overflow output KBI7 Keyboard input 7 P1 0 to P1 7 l O Port 1 Port 1 is an 8 bit I O port with a user configurable output type except for three pins as noted below During reset Port 1 latches are configured in the input only mode with the internal pull up disabled The operation of the configurable Port 1 pins as inputs and outputs depends upon the port configuration selected Each of the configurable port pins are programmed independently Refer to Section 4 1 Port configurations for details P1 2 to P1 3 are open drain when used as outputs P1 5 is input only All pins have Schmitt triggered inputs Port 1 also provides various special functions as described below UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 5 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 1 Pin description continued Symbol Pin Type Description P1 0 TXD 18 1 0 Port 1 bit 0 TXD Transmitter output for serial port P1 1 RXD 17 1 1 Port 1 bit 1 RXD Receiver input for serial port P1 2 TO SCL 12 y o P1 2 Port 1 bit 2 open drain when used as outpu
30. 0 18 9 5 30 15 1 3 6 Kbps to 1 8Kbpsto 0 9 Kbpsto 5 86Kbpsto 2 93 Kbps to 922 Kbps 461 Kbps 230 Kbps 1500 Kbps 750 Kbps Timer 1 in Timer 1 in Timer 1 in Timer 1 in Timer 1 in mode 2 mode 2 mode 2 mode 2 mode 2 I C operation modes Master Transmitter mode In this mode data is transmitted from master to slave Before the Master Transmitter mode can be entered I2CON must be initialized as follows Table 71 12 Control register 12 address D8h Bit 7 6 5 4 3 2 1 0 2 5 5 SI AA CRSEL value 1 0 0 0 x bit rate CRSEL defines the bit rate 2 must be set to 1 to enable the 2 function If the AA bit is 0 it will not acknowledge its own slave address or the general call address in the event of another device becoming master of the bus and it can not enter slave mode STA STO and SI bits must be cleared to 0 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 74 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual The first byte transmitted contains the slave address of the receiving device 7 bits and the data direction bit In this case the data direction bit R W will be logic 0 indicating a write Data is transmitted 8 bits at a time After each byte is transmitted an acknowledge bit is received START and STOP conditions are output to indicate the beginning and the end of a serial transfer The 2 5 will enter Master Tran
31. 0 X STOP condition will be or transmitted STO flag will be reset nol2DAT action 1 1 0 STOP condition followed by a START condition will be transmitted STO flag will be reset 20h SLA W has been Load data byte or 0 0 0 X Data byte will be transmitted transmitted ACK bit will be received NOT ACKhaS mojoDATaction 1 0 0 x Repeated START will be been received or transmitted I2DAT action 0 1 0 X STOP condition will be or transmitted STO flag will be reset nol2DAT action 1 1 0 STOP condition followed by a START condition will be transmitted STO flag will be reset 28h Data byte in Load data byte or 0 0 0 X Data byte will be transmitted I2DAT ACK bit will be received transmitted has been received 19 I2DAT action 1 0 0 X Repeated START will be or transmitted nol2DAT action 0 1 0 x STOP condition will be or transmitted STO flag will be reset nol2DAT action 1 1 0 X STOP condition followed by a START condition will be transmitted STO flag will be reset UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 79 of 139 NXP Semiconductors UM10310 P89LPC9321 User manual Table 73 Master Transmitter mode continued Status code Status of the I2C Application software response Next action taken by I2C 125 hardware to from I2DAT to I2CON hardware STA STO 30h Data byte in Load data byte 0 0 0 Data byt
32. 2 MOSI NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 32 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 14 Port output configuration continued Port pin Configuration SFR bits PxM1 y PxM2 y Alternate usage Notes P2 3 P2M1 3 P2M2 3 MISO P2 4 P2M1 4 P2M2 4 55 2 5 2 1 5 2 2 5 SPICLK P2 6 P2M1 6 P2M2 6 OCA P2 7 P2M1 7 P2M2 7 ICA P3 0 P3M1 0 P3M2 0 CLKOUT XTAL2 P3 1 P3M1 1 P3M2 1 XTAL1 5 Power monitoring functions UM10310_1 5 1 The P89LPC9321 incorporates power monitoring functions designed to prevent incorrect operation during initial power on and power loss or reduction during operation This is accomplished with two hardware functions Power on Detect and Brownout Detect Brownout detection The brownout detect function determines if the power supply voltage drops below a certain level Enhanced BOD has 3 independent functions BOD reset BOD interrupt and BOD EEPROM FLASH BOD reset will cause a processor reset and it is always on except in total power down mode It could not be disabled in software BOD interrupt will generate an interrupt and could be enabled or disabled in software BOD reset and BOD interrupt each has 4 trip voltage levels BOE1 bit UCFG1 5 and BOEO bit UCFG1 3 are used as trip point configuration bits of BOD reset BOICFG1 bit and BOICFGO bit in register BODCFG are used as trip point configuration bits of BO
33. 2 and 3 this consists of the start bit 9 data bits and one stop bit The break detect bit is cleared in software or by a reset The break detect can be used to reset the device and force the device into ISP mode This occurs if the UART is enabled and the the EBRR bit AUXR1 6 is set and a break occurs Double buffering The UART has a transmit double buffer that allows buffering of the next character to be written to SBUF while the first character is being transmitted Double buffering allows transmission of a string of characters with only one stop bit between any two characters provided the next character is written between the start bit and the stop bit of the previous character Double buffering can be disabled If disabled DBMOD i e SSTAT 7 0 the UART is compatible with the conventional 80C51 UART If enabled the UART allows writing to SnBUF while the previous data is being shifted out Double buffering in different modes Double buffering is only allowed in Modes 1 2 and 3 When operated in Mode 0 double buffering must be disabled DBMOD 0 Transmit interrupts with double buffering enabled Modes 1 2 and 3 Unlike the conventional UART when double buffering is enabled the Tx interrupt is generated when the double buffer is ready to receive new data The following occurs during a transmission assuming eight data bits 1 The double buffer is empty initially 2 The CPU writes to SBUF 3 The SBUF data is loa
34. 27 Timer Counter Auxiliary Mode register TAMOD address 8Fh bit description Bit Symbol Description 0 TOM2 Mode Select for Timer 0 These bits are used with the 2 bit in the TAMOD register to determine the Timer 0 mode see Table 27 1 3 reserved 4 1 2 Mode Select for Timer 1 These bits are used with the T1M2 bit in the TAMOD register to determine the Timer 1 mode see Table 27 The following timer modes are selected by timer mode bits TnM 2 0 000 8048 Timer TLn serves as 5 bit prescaler Mode 0 001 16 bit Timer Counter THn and TLn are cascaded there is no prescaler Mode 1 010 8 bit auto reload Timer Counter THn holds a value which is loaded into TLn when it overflows Mode 2 011 Timer 0 is a dual 8 bit Timer Counter in this mode TLO is an 8 bit Timer Counter controlled by the standard Timer 0 control bits THO is an 8 bit timer only controlled by the Timer 1 control bits see text Timer 1 in this mode is stopped Mode 3 100 Reserved User must not configure to this mode 101 Reserved User must not configure to this mode 110 PWM mode see Section 7 5 111 Reserved User must not configure to this mode 5 7 reserved 7 1 Mode 0 Putting either Timer into Mode 0 makes it look like 8048 Timer which is 8 bit Counter with a divide by 32 prescaler Figure 15 shows Mode 0 operation In this mode the Timer register is configured as a 1
35. 5 P89LPC9321FDH Von P3 0 XTAL2 CLKOUT P0 6 CMP1 KBI6 P1 4 INT1 PO 7 T1 KBI7 P1 3 INTO SDA P1 0 TXD P1 2 TO SCL P1 1 RXD P2 2 MOSI P2 5 SPICLK P2 3 MISO P2 4 SS 002aae 104 Fig 1 TSSOP28 pin configuration UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 3 of 139 NXP Semiconductors UM10310 UM10310_1 P89LPC9321 User manual P2 0 ICB 4 P1 7 OCC PO 0 CMP2 KBIO 2 P2 1 OCD 1 26 0 1 2 28 2 7 27 P2 6 0CA 1 6 2 2 2 P1 5 RST Vss PO 4 CIN1 4 P3 1 XTAL1 P89LPC9321FA P0 5 CMPREF KBI5 P3 0 XTAL2 CLKOUT Vpp P1 4 INT1 6 1 6 P1 3 INTO SDA P0 7 T1 KBI7 OO T4 002aae105 EEEF BI 5 Fig 2 PLCC28 pin configuration P2 0 ICB P2 7 ICA P2 1 0CD P2 6 0CA P0 0 CMP2 KBIO PO 1 CIN2B KBI1 P1 7 0CC 2 2 2 1 6 P0 3 CIN1B KBI3 P1 5 RST PO 4 CIN1A KBI4 Vss P0 5 CMPREF KBI5 P89LPC9321FN P3 1 XTAL1 Vpp P3 0 XTAL2 CLKOUT P0 6 CMP1 KBI6 P1 4 INT1 P0 7 T1 KBI7 P1 3 INTO SDA P1 0 TXD P1 2 TO SCL P1 1 RXD P2 2 MOSI P2 5 SPICLK P2 3 MISO P2 4 SS 002aae 106 Fig 3 DIP28 pin configuration NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 4 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User ma
36. Asymmetrical PWM downcounting TOR2 compare value timer value 0 non inverted inverted 002 894 Fig 23 Symmetrical PWM The CCU Timer Overflow interrupt flag is set when the counter changes direction at the top For example if TOR contains 01FFH CCU Timer will count 101 01FFH 01FEH Aq The flag is set in the counter cycle after the change from TOR to TOR 1 When the timer changes direction at the bottom in this example it counts AJ 0001H 0000H 0001 The CCU Timer overflow interrupt flag is set in the counter CCUCLK cycle after the transition from 0001H to OOOOH The status of the TDIR2 bit in TCR20 reflects the current counting direction Writing to this bit while operating in symmetrical mode has no effect Alternating output mode In asymmetrical mode the user can program PWM channels A B and C D as alternating pairs for bridge drive control By setting ALTAB or ALTCD bits in TCR20 the output of these PWM channels are alternately gated on every counter cycle This is shown in the following figure NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 53 of 139 NXP Semiconductors UM1 031 0 UM10310_1 9 8 9 9 P89LPC9321 User manual TOR2 COMPARE VALUE A or C COMPARE VALUE B or D 4 TIMER VALUE 0 PWM OUTPUT or C P2 6 PWM OUTPUT B or
37. BOIF bit Upon a power up reset all reset source flags are cleared except POF and BOF the power on reset value is x011 0000 After reset the value is 1110 01 1 i e PRE2 to PREO are all logic 1 WDRUN 1 and WDCLK 1 WDTOF bit is logic 1 after watchdog reset and is logic 0 after power on reset Other resets will not affect WDTOF On power on reset and watchdog reset the TRIM SFR is initialized with a factory preprogrammed value Other resets will not cause initialization of the TRIM register The only reset sources that affect these SFRs are power on reset and watchdog reset Jesf 1666541684 OLEOLINN SIOJONPUODIWIS dXN jenuew sn 8002 1equie2eg L0 65130 61 OLEOLWN 8002 7 74 dXN Table 3 Extended special function registers Name Description SFR Bit functions and addresses Reset value addr MSB LSB Hex Binary BODCFG BOD FFC8H BOICFG1 BOICFGO 21 configuration register CLKCON CLOCK Control FFDEH CLKOK XTALWD CLKDBL FOSC2 FOSC Fosco 1000 0100 register PGACON1 1 control FFE1H ENPGA1 PGASEL1 PGASEL1 PGATRIM PGAG11 PGAG10 00 0000 0000 register 1 0 1 PGACON1B 1 control FFE4H 00 0000 0000 register FF1 PGA1TRIM8X16X 1 trim FFE3H 16 16XTRIM2 16XTRIM1 16XTRIMO BXTRIM3 8XTRIM2 8XTRIM1 8XTRIMO 4 register PGA1TRIM2X4X PGA trim FFE2H 4XTRIM3 4XT
38. Bit 7 6 5 4 3 2 1 0 Symbol SEL Reset 0 0 Table 93 Keypad Control register address 94h bit description Bit Symbol Access Description 0 KBIF R W Keypad Interrupt Flag Set when Port 0 matches user defined conditions specified in KBPATN KBMASK and PATN_SEL Needs to be cleared by software by writing logic 0 1 PATN SEL R W Pattern Matching Polarity selection When set Port 0 has to be equal to the user defined Pattern in KBPATN to generate the interrupt When clear Port 0 has to be not equal to the value of KBPATN register to generate the interrupt 2 7 reserved UM10310_1 NXP 2008 All rights reserved User manual Rev 01 1 December 2008 100 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 94 Keypad Interrupt Mask register KBMASK address 86h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol KBMASK 7 KBMASK 6 KBMASK 5 KBMASK 4 KBMASK 3 KBMASK 2 1 5 0 Reset 0 0 0 0 0 0 0 0 Table 95 Keypad Interrupt Mask register KBMASK address 86h bit description Bit Symbol Description 0 When set enables 0 0 as a cause of a Keypad Interrupt 1 KBMASK 1 When set enables PO 1 as a cause of a Keypad Interrupt 2 KBMASK 2 When set enables PO 2 as a cause of a Keypad Interrupt 3 KBMASK 3 When set enables P0 3 as a cause of a Keypad Interrupt 4 4 When set enables PO 4 as
39. D P1 6 002 895 Fig 24 Alternate output mode Table 42 Output compare pin behavior OCMx1 1 Output Compare pin behavior Basic timer mode Asymmetrical PWM Symmetrical PWM 0 0 Output compare disabled On power on this is the default state and pins are configured as inputs 0 1 Set when compare in Non Inverted PWM Set Non Inverted PWM operation Cleared on compare match Cleared on compare compare 121 Cleared on CCU Timer match upcounting Set underflow on compare match downcounting 1 0 invalid configuration 1 1 Toggles on compare Inverted PWM Cleared Inverted PWM Set on matchl2 on compare match Set compare match on CCU Timer upcounting Cleared on underflow 21 compare match downcounting l2 1 x A B C D 2 ON means the CCUCLK cycle after the event takes place Synchronized PWM register update When the OCRx registers are written a built in mechanism ensures that the value is not updated in the middle of a PWM pulse This could result in an odd length pulse When the registers are written the values are placed in two shadow registers as is the case in basic timer operation mode Writing to TCOU2 will cause the contents of the shadow registers to be updated on the next CCU Timer overflow If OCRxH and or OCRxL are read before the value is updated the most currently written value is read HALT Setting the HLTEN bit in TCR20 enables the PWM
40. Flash the status byte should be programmed to zero in order to allow execution of the user s application code beginning at address 0000H RST t mE 002aaa912 Fig 52 Forcing ISP mode In system programming ISP In System Programming is performed without removing the microcontroller from the system The In System Programming facility consists of a series of internal hardware resources coupled with internal firmware to facilitate remote programming of the P89LPC9321 through the serial port This firmware is provided by NXP and embedded within each P89LPC9321 device The NXP In System Programming facility has made in circuit programming in an embedded application possible with a minimum of additional NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 118 of 139 NXP Semiconductors UM1 031 0 UM10310_1 18 11 P89LPC9321 User manual expense in components and circuit board area The ISP function uses five pins Vss TXDO RXDO and RST Only a small connector needs to be available to interface your application to an external circuit in order to use this feature Using the In system programming ISP The ISP feature allows for a wide range of baud rates to be used in your application independent of the oscillator frequency It is also adaptable to a wide range of oscillator frequencies This is accomplished by measuring the bit time of a single bit in a received c
41. Halt Function When halt function is enabled a capture event as enabled for the Input Capture A pin will immediately stop all activity on the PWM pins and set them to a predetermined state defined by bit In PWM Mode the FCOx bits in the CCCRx register hold the value the pin is forced to during halt The value of the setting can be read back The capture function and the interrupt will NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 54 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual still operate as normal even if it has this added functionality enabled When the PWM unit is halted the timer will still run as normal The HLTRN bit in TCR20 will be set to indicate that a halt took place In order to re activate the PWM the user must clear the HLTRN bit The user can force the PWM unit into halt by writing a logic 1 to HLTRN bit 9 10 PLL operation The PWM module features a Phase Locked Loop that can be used to generate a CCUCLK frequency between 16 MHz and 32 MHz At this frequency the PWM module provides ultrasonic PWM frequency with 10 bit resolution provided that the crystal frequency is 1 MHz or higher The PWM resolution is programmable up to 16 bits by writing to TOR2H TOR2L The PLL is fed an input signal of 0 5 MHz to 1 MHz generates an output signal of 32 times the input frequency This signal is used to clock the timer The user will have to set a divider that
42. ICECx1 0 Delay numbers of edges 0 0 0 0 0 0 1 1 0 1 0 2 0 1 1 3 1 0 0 4 1 0 1 5 1 1 0 7 1 1 1 15 PWM operation PWM Operation has two main modes asymmetrical and symmetrical These modes of timer operation are selected by writing 10H or 11H to TMOD21 TMOD20 as shown Section 9 3 Basic timer operation In asymmetrical PWM operation the CCU Timer operates in downcounting mode regardless of the setting of TDIR2 In this case TDIR2 will always read 1 In symmetrical mode the timer counts up down alternately and the value of TDIR2 has no effect The main difference from basic timer operation is the operation of the compare module which in PWM mode is used for PWM waveform generation Table 42 shows the behavior of the compare pins in PWM mode NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 52 of 139 NXP Semiconductors UM1 031 0 UM10310_1 9 7 P89LPC9321 User manual The user will have to configure the output compare pins as outputs in order to enable the PWM output As with basic timer operation when the PWM compare pins are connected to the compare logic their logic state remains unchanged However since the bit FCO is used to hold the halt value only a compare event can change the state of the pin TOR2 compare value timer value 0x0000 non inverted inverted 002 893 Fig 22
43. MHz to 18 MHz Ceramic resonators are also supported in this configuration 2 4 Clock output The P89LPC9321 supports a user selectable clock output function on the XTAL2 CLKOUT pin when the crystal oscillator is not being used This condition occurs if a different clock source has been selected on chip RC oscillator watchdog oscillator external clock input on X1 and if the Real time Clock and Watchdog Timer are not using the crystal oscillator as their clock source This allows external devices to synchronize to the P89LPC9321 This output is enabled by the ENCLK bit in the TRIM register The frequency of this clock output is 1 2 that of the CCLK If the clock output is not needed in Idle mode it may be turned off prior to entering Idle saving additional power Note on reset the TRIM SFR is initialized with a factory preprogrammed value Therefore when setting or clearing the ENCLK bit the user should retain the contents of other bits of the TRIM register This can be done by reading the contents of the TRIM register into the ACC for example modifying bit 6 and writing this result back into the TRIM register Alternatively the ANL direct or ORL direct instructions can be used to clear or set bit 6 of the TRIM register 2 5 On chip RC oscillator option The P89LPC9321 has a 6 bit TRIM register that can be used to tune the frequency of the RC oscillator During reset the TRIM value is initialized to a factory pre programmed v
44. Ports 0 1 and 2 are 8 bit ports and Port 3 is a 2 bit port The exact number of I O pins available depends upon the clock and reset options chosen see Table 12 Table 12 Number of I O pins available Clock source Reset option Number of I O pins On chip oscillator or watchdog No external reset except during power up 26 oscillator External RST pin supported 25 External clock input No external reset except during power up 25 External RST pin supported 24 Low medium high speed oscillator No external reset except during power up 24 external crystal or resonator External RST pin supported 23 UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 28 of 139 NXP Semiconductors UM1 031 0 UM10310 1 4 1 4 2 P89LPC9321 User manual Port configurations All but three I O port pins on the P89LPC9321 may be configured by software to one of four types on a basis as shown in Table 13 These are quasi bidirectional standard 80C51 port outputs push pull open drain and input only Two configuration registers for each port select the output type for each port pin P1 5 RST can only be an input and cannot be configured 1 2 SCL TO and P1 3 SDA INTO may only be configured to be either input only or open drain Table 13 Port output configuration settings PxM1 y PxM2 y Port output mode 0 0 Quasi bidirectional 0 1 Push pull 1 0 Input only high i
45. The oscillator must be configured in one of the following modes Low frequency crystal medium frequency crystal or high frequency crystal 1 A series resistor may be required to limit crystal drive levels This is especially important for low frequency crystals see text Fig 7 Using the crystal oscillator UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 23 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual HIGH FREQUENCY MEDIUM FREQUENCY gt RTC XTAL2 LOW FREQUENCY gt Ll RC OSCILLATOR RCCLK i WITH CLOCK DOUBLER PCLK gt 400 kHz 5 TIMER 0 AND 2 002 108 7 3728 MHz 14 7456 MHz 1 OSCILLATOR 32 x PLL Note The oscillator must be configured in one of the following modes Low frequency crystal medium frequency crystal or high frequency crystal 1 series resistor may be required to limit crystal drive levels This is especially important for low frequency crystals see text Fig8 Block diagram of oscillator control 2 8 Clock sources switch on the fly P89LPC9321 can implement clock source switch in any sources of watchdog oscillator 7 14MHz IRC oscillator external crystal oscillator and external clock input during code is running CLKOK bit in register CLKCON is read only and used to indicate the clock switch status When CLKOK is 0 clock switch is processing
46. User manual Table 110 IAP function calls continued IAP function IAP call parameters Read Sector CRC Input parameters ACC 05h R7 sector address Return parameter s R4 CRC bits 31 24 R5 CRC bits 23 16 R6 CRC bits 15 8 R7 CRC bits 7 0 if no error R7 error status if error Carry set on error clear on no error Read Global CRC Input parameters ACC 06h Return parameter s R4 CRC bits 31 24 R5 CRC bits 23 16 R6 CRC bits 15 8 R7 CRC bits 7 0 if no error R7 error status if error Carry set on error clear on no error Read User Code Input parameters 07h R4 address MSB R5 address LSB Return parameter s R7 data 18 17 User configuration bytes A number of user configurable features of the P89LPC9321 must be defined at power up and therefore cannot be set by the program after start of execution These features are configured through the use of an Flash byte UCFG1 and UCFG2 shown in Table 112 and Table 115 Table 111 Flash User Configuration Byte 1 UCFG1 bit allocation Bit 7 6 5 4 3 2 1 0 Symbol WDTE RPE BOE1 WDSE BOEO FOSC2 FOSC1 FOSCO Unprogrammed 0 1 1 0 0 0 1 1 value Table 112 Flash User Configuration Byte 1 UCFG1 bit description Bit Symbol Description 0 FOSCO CPU oscillator type select See Section 2 Clocks for additional information Combinations other than those 1 1 shown in Table 113 are reserved for future use should not be used 2 FOSC2 3
47. V 2008 All rights reserved User manual Rev 01 1 December 2008 114 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Write the data for the next byte to be programmed to FMDATA Repeat writing of FMADRL and or FMDATA until all desired bytes have been loaded into the page register e Write the page address in user code memory to FMADRH and FMADRL 7 6 if not previously included when writing the page register address to FWADRL 5 0 Write the erase program command 68H to FMCON starting the erase program cycle Read FMCON to check status If aborted repeat starting with the LOAD command Table 105 Flash Memory Control register FMCON address E4h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol HVA HVE SV Symbol W 7 FMCMD 6 5 4 FMCMD 2 1 FMCMD 0 0 0 0 0 0 0 0 0 Table 106 Flash Memory Control register address 4 bit description Bit Symbol Access Description 0 Ol R Operation interrupted Set when cycle aborted due to an interrupt or reset FMCMD 0 W Command byte bit 0 1 SV Security violation Set when an attempt is made to program erase or CRC secured sector page FMCMD 1 W Command byte bit 1 2 HVE R High voltage error Set when an error occurs in the high voltage generator FMCMD 2 W Command byte bit 2 3 HVA High voltage abort Set if either an interrupt or BOD FL
48. a cause of a Keypad Interrupt 5 KBMASK 5 When set enables PO 5 as a cause of a Keypad Interrupt 6 KBMASK 6 When set enables 0 6 as a cause of a Keypad Interrupt 7 KBMASK 7 When set enables 7 as a cause of a Keypad Interrupt 1 The Keypad Interrupt must be enabled in order for the settings of the KBMASK register to be effective 15 Watchdog timer WDT The watchdog timer subsystem protects the system from incorrect code execution by causing a system reset when it underflows as a result of a failure of software to feed the timer prior to the timer reaching its terminal count The watchdog timer can only be reset by a power on reset 15 1 Watchdog function The user has the ability using the WDCON and UCFG1 registers to control the run stop condition of the WDT the clock source for the WDT the prescaler value and whether the WDT is enabled to reset the device on underflow In addition there is a safety mechanism which forces the WDT to be enabled by values programmed into UCFG1 either through IAP or a commercial programmer The WDTE bit UCFG1 7 if set enables the WDT to reset the device on underflow Following reset the WDT will be running regardless of the state of the WDTE bit The WDRUN bit WDCON 2 can be set to start the WDT and cleared to stop the WDT Following reset this bit will be set and the WDT will be running All writes to WDCON need to be followed by a feed sequence see Section 1
49. an acknowledge bit after each received byte Data transfer from a slave transmitter to a master receiver The first byte the slave address is transmitted by the master The slave then returns an acknowledge bit Next follows the data bytes transmitted by the slave to the master The master returns an acknowledge bit after all received bytes other than the last byte At the end of the last received byte a not acknowledge is returned The master device generates all of the serial clock pulses and the START and STOP conditions A transfer is ended with a STOP condition or with a repeated START condition Since a repeated START condition is also the beginning of the next serial transfer the I2C bus will not be released The P89LPC9321 device provides a byte oriented interface It has four operation modes Master Transmitter Mode Master Receiver Mode Slave Transmitter Mode and Slave Receiver Mode UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 70 of 139 NXP Semiconductors UM1 031 0 UM10310_1 P89LPC9321 User manual SDA SCL P1 3 SDA P1 2 SCL OTHER DEVICE OTHER DEVICE 2 MCU WITH 2 05 WITH I C BUS INTERFACE INTERFACE 002aac130 Fig 31 I C bus configuration The P89LPC9321 CPU interfaces with the 2 through six Special Function Registers SFRs I2CON Control Register I2DAT 12 Data Regi
50. an address comprised of 00h in the lower eight bits and this BOOTVEC as the upper eight bits after a reset 57 reserved 18 20 Boot status register Table 121 Boot Status BOOTSTAT bit allocation Bit 7 6 5 4 3 2 1 0 Symbol DCCP CWP AWP BSB Factory default 0 0 0 0 0 0 0 1 value UM10310_1 NXP 2008 All rights reserved User manual Rev 01 1 December 2008 129 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 122 Boot Status BOOTSTAT bit description Bit Symbol 0 5 1 4 5 6 CWP 7 Description Boot Status Bit If programmed to logic 1 the P89LPC9321 will always start execution at an address comprised of 00H in the lower eight bits and BOOTVEC as the upper bits after a reset See Section 6 1 Reset vector reserved Activate Write Protection bit When this bit is cleared the internal Write Enable flag is forced to the set state thus writes to the flash memory are always enabled When this bit is set the Write Enable internal flag can be set or cleared using the Set Write Enable SWE or Clear Write Enable CWE commands Configuration Write Protect bit Protects inadvertent writes to the user programmable configuration bytes UCFG1 BOOTVEC and BOOTSTAT If programmed to a logic 1 the writes to these registers are disabled If programmed to a logic 0 writes to these registers are enabled This bit is set by programming the B
51. and slave selection 88 Table 83 Comparator Control register CMP1 address ACh CMP2 address ADh bit allocation 95 Table 84 Comparator Control register 1 address ACh 2 address ADh bit description 95 Table 85 PGA trim register 99 Table 86 PGA1 Control register PGACON1 address FFE1h bit allocation 99 Table 87 PGA1 Control register PGACON1 address FFE1h bit description 99 Table 88 PGA1 Control register B PGACON1B address FFE4h bit allocation 99 Table 89 PGA1 Control register B PGACON1B address FFE4h bit description 99 Table 90 Keypad Pattern register KBPATN address 93h bit allocation 100 Table 91 Keypad Pattern register address 93h bit description 100 Table 92 Keypad Control register KBCON address 94h bit allocation 100 Table 93 Keypad Control register address 94h bit description 100 Table 94 Keypad Interrupt Mask register KBMASK address 86h bit allocation 101 Table 95 Keypad Interrupt Mask register address 86h bit description 101 Table 96 Watchdog timer configuration 102 Table 97 Watchdog Timer Control register WDCON address A7h bit allocation 10
52. be used to save configuration parameters The Data EEPROM is SFR based byte readable byte writable and erasable via row fill and sector fill The user can read write and fill the memory via three SFRs and one interrupt Address Register DEEADR is used for address bits 7 to 0 bit 8 is in the DEECON register Control Register DEECON is used for address bit 8 setup operation mode and status flag bit see Table 103 Data Register DEEDAT is used for writing data to or reading data from the Data EEPROM Table 103 Data EEPROM control register DEECON address F1h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol HVERR ECTL1 ECTLO EWERR EWERR EADR8 1 0 Reset 0 0 0 0 0 0 0 0 Table 104 Data EEPROM control register DEECON address F1h bit description Bit Symbol Description 0 EADR8 Most significant address bit 8 of the Data EEPROM EADR7 0 in DEEADR 1 EWERR Data EEPROM write error flag 0 Set when Vpp lt 2 4V during program or erase 0 operation to indicate the previous operation may not be correct Can be cleared by power on reset watchdog reset or software write 2 EWERR Data EEPROM write error flag 1 Set when a program or erase is requested and 1 Vpp lt 2 4V Can be cleared by power on reset watchdog reset or software write 2 Reserved 5 4 ECTL1 0 Operation mode selection The following modes are selected by ECTL 1 0 00 Byte read write mode 01 Reserved 10 Row 64 byt
53. clock source RTCS1 RTCSO RTCCON 6 5 are used to select the clock source for the RTC if either the Internal RC oscillator or the internal WD oscillator is used as the CPU clock If the internal crystal oscillator or the external clock input on XTAL1 is used as the CPU clock then the RTC will use CCLK as its clock source UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 44 of 139 NXP Semiconductors UM1 031 0 8 2 8 3 8 3 1 8 4 P89LPC9321 User manual Changing RTCS1 RTCSO RTCS1 RTCSO cannot be changed if the RTC is currently enabled 1 Setting RTCEN and updating RTCS1 RTCSO may be done in a single write to RTCCON However if RTCEN 1 this bit must first be cleared before updating RTCS1 RTCSO Real time clock interrupt wake up If ERTC RTCCON 1 EWDRT 1 0 6 and EA IENO 7 are set to logic 1 can be used as an interrupt source This interrupt vector is shared with the watchdog timer It can also be a source to wake up the device Real time clock read back Users can read RTCDATH and RTCDATL registers and get the 16 bit counter portion of the RTC Reset sources affecting the Real time clock Only power on reset and watchdog reset will reset the Real time Clock and its associated SFRs to their default state Table 30 Real time Clock System Timer clock sources FOSC2 0 RCCLK RTCS1 0 RTC clock source CPU clock source
54. down counter The clock source for this counter can be either the CPU clock or the XTAL1 2 oscillator There are five SFRs used for the RTC RTCCON Real time Clock control RTCH Real time Clock counter reload high bits 22 to 15 RTCL Real time Clock counter reload low bits 14 to 7 RTCDATH Real time clock data register high RTCDATL Real time Clock data register low The Real time clock system timer can be enabled by setting the RTCEN RTCCON 0 bit The Real time Clock is a 23 bit down counter initialized to all 075 when RTCEN 0 that is comprised of a 7 bit prescaler and a 16 bit loadable down counter When RTCEN is written with logic 1 the counter is first loaded with RTCH RTCL 1111111 and will count down When it reaches all 0 s the counter will be reloaded again with RTCH RTCL 4111111 and a flag RTCF RTCCON 7 will be set The 16 bit counter portion of the RTC is readable by reading the RTCDATH and RTCDATL registers Reload on underflow ji 23 bit down counter RTCDATH RTCDATL Wake up from power down A RTCF Interrupt if enabled RTC underflow flag shared with WDT ERTC Fig 20 Real time clock system timer block diagram Power on reset RTC Reset RTC enable RTC clk select oscillators XTAL2 XTAL1 LOW FREQ MED FREQ HIGH FREQ CCLK internal 002aae091 8 1 Real time
55. free Switched to not addressed SLA mode Own slave address will be recognized General call address will be recognized if IDADR O 1 A START condition will be transmitted when the bus becomes free 12 Serial Peripheral Interface SPI UM10310 1 The P89LPC9321 provides another high speed serial communication interface the SPI interface SPI is a full duplex high speed synchronous communication bus with two operation modes Master mode and Slave mode Up to 3 Mbit s can be supported in either Master or Slave mode It has a Transfer Completion Flag and Write Collision Flag Protection NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 84 of 139 NXP Semiconductors UM10310 P89LPC9321 User manual CPU clock SPR 8 BIT SHIFT REGISTER DIVIDER READ DATA BUFFER BY 4 16 64 128 ze gt SPI STATUS REGISTER MISO P2 3 MOSI P2 2 SPICLK P2 5 5 P2 4 SPI interrupt request internal data bus Fig 38 SPI block diagram 002 900 The SPI interface has four pins SPICLK MOSI MISO and SS SPICLK MOSI and MISO are typically tied together between two or more SPI devices Data flows from master to slave on the MOSI Master Out Slave In pin and flows from slave to master on the MISO Master In Slave Out pin The SPICLK signal is out
56. is received the serial port interrupt will be activated only if RB8 1 This feature is enabled by setting bit SM2 in SCON One way to use this feature in multiprocessor systems is as follows When the master processor wants to transmit a block of data to one of several slaves it first sends out an address byte which identifies the target slave An address byte differs from a data byte in that the 9th bit is 1 in an address byte and 0 in a data byte With SM2 1 no slave will be interrupted by a data byte An address byte however will interrupt all slaves so that each slave can examine the received byte and see if it is being addressed The addressed slave will clear its SM2 bit and prepare to receive the data bytes that follow The slaves that weren t being addressed leave their SM2 bits set and go on about their business ignoring the subsequent data bytes Note that SM2 has no effect in Mode 0 and must be logic 0 in Mode 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 68 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual 10 20 Automatic address recognition Automatic address recognition is a feature which allows the UART to recognize certain addresses in the serial bit stream by using hardware to make the comparisons This feature saves a great deal of software overhead by eliminating the need for the software to examine every serial address which passes by the serial port Th
57. of oscillator control 24 Interrupt sources interrupt enables and power down wake up sources 28 Quasi bidirectional 30 Open drain 30 5555 d cod ees Sale aser e 31 Push pull 31 Block diagram 38 Timer counter 0 or 1 in Mode 0 13 bit counter 42 Timer counter 0 or 1 in mode 1 16 bit counter 42 Timer counter 0 or 1 in Mode 2 8 bit 42 Timer counter 0 Mode two 8 bit counters 43 Timer counter 0 or 1 in mode 6 PWM 43 Real time clock system timer block diagram 44 Capture Compare Unit block diagram 48 Asymmetrical PWM downcounting 53 Symmetrical PWM 53 Alternate output mode 54 Capture compare unit interrupts 57 Baud rate generation for UART Modes 1 3 61 Serial Port Mode 0 double buffering must be disabled ona d Rubeus sean 64 Serial Port Mode 1 only single transmit buffering case is 6 65 Serial Port Mode 2 or 3 only single transmit buffering case is shown 65 Transmission with and without double buffering 67 2 configuration 71 Format in the Master Tr
58. receives an input clock signal of 500 kHz 1 MHz Write this value to PLLDV 3 Set PLLEN Wait until the bit reads one 4 Start the timer by writing a value to bits TMOD21 TMOD20 When the timer runs from the PLL the timer operates asynchronously to the rest of the microcontroller Some restrictions apply UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 55 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual The user is discouraged from writing or reading the timer in asynchronous mode The results may be unpredictable Interrupts and flags are asynchronous There will be delay as the event may not actually be recognized until some CCLK cycles later for interrupts and reads 9 11 CCU interrupt structure There are seven independent sources of interrupts in the CCU timer overflow captured input events on Input Capture blocks A B and compare match events on Output Compare blocks A through D One common interrupt vector is used for the CCU service routine and interrupts can occur simultaneously in system usage To resolve this situation a priority encode function of the seven interrupt bits in TIFR2 SFR is implemented after each bit is AND ed with the corresponding interrupt enable bit in the TICR2 register The order of priority is fixed as follows from highest to lowest TOIF2 e TICF2A e TICF2B TOCF2A e TOCF2B e TOCF2C e TOCF2D An interrupt service
59. remote programming of the P89LPC9321 through a two wire serial interface NXP has made in circuit programming in an embedded application possible with a minimum of additional expense in components and circuit board area The ICP function uses five pins Vss P0 5 P0 4 and RST Only a small connector needs to be available to interface your application to an external programmer in order to use this feature ISP and IAP capabilities of the P89LPC9321 In Application Programming IAP interface is provided to allow the end user s application to erase and reprogram the user code memory In addition erasing and reprogramming of user programmable bytes including UCFG1 UCFG2 the Boot Status Bit and the Boot Vector is supported As shipped from the factory the upper 512 bytes of user code space contains a serial In System Programming ISP loader allowing for the device to be programmed in circuit through the serial port This ISP boot loader will in turn call low level routines through the same common entry point that can be used by the end user application Boot ROM When the microcontroller contains a a 256 byte Boot ROM that is separate from the user s Flash program memory This Boot ROM contains routines which handle all of the low level details needed to erase and program the user Flash memory A user program simply calls a common entry point in the Boot ROM with appropriate parameters to accomplish the desired operation Boot
60. routine for the CCU can be as follows 1 Read the priority encoded value from the TISE2 register to determine the interrupt source to be handled 2 After the current highest priority event is serviced write a logic 0 to the corresponding interrupt flag bit in the TIFR2 register to clear the flag 3 Read the TISE2 register If the priority encoded interrupt source is 000 all CCU interrupts are serviced and a return from interrupt can occur Otherwise return to step List item 2 for the next interrupt UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 56 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual EA IENO 7 ECCU IEN1 4 TOIE2 TICR2 7 TOIF2 TIFR2 7 TICIE2A TICR2 0 TICF2A TIFR2 0 TICIE2B TICR2 1 TICF2B TIFR2 1 TOCIE2A TICR2 3 l2 TOCF2A TIFR2 3 other TOCIE2B TICR2 4 2 interrupt TOCF2B TIFR2 4 Sources TOCIE2C TICR2 5 l2 TOCF2C TIFR2 5 TOCIE2D TICR2 6 F TOCF2D TIFR2 6 interrupt to CPU gt ENCINT O PRIORITY ENCODER gt ENCINT 1 gt ENCINT 2 002aaa896 Fig 25 Capture compare unit interrupts Table 45 CCU interrupt status encode register TISE2 address DEh bit allocation Bit 7 6 5 4 3 2 1 0 Symbol ENCINT 2 1 0 Reset x x x x x 0 0 0 Table
61. still asserted when the interrupt service routine is completed another interrupt will be generated It is not necessary to clear the interrupt flag IEn when the interrupt is level sensitive it simply tracks the input pin level If an external interrupt has been programmed as level triggered and is enabled when the P89LPC9321 is put into Power down mode or Idle mode the interrupt occurrence will cause the processor to wake up and resume operation Refer to Section 5 3 Power reduction modes for details Note the external interrupt must be programmed as level triggered to wake up from Power down mode 3 2 External Interrupt pin glitch suppression Most of the P89LPC9321 pins have glitch suppression circuits to reject short glitches please refer to the P89LPC9321 data sheet Dynamic characteristics for glitch filter specifications However pins SDA INTO P1 3 and 5 1 2 do not have the glitch suppression circuits Therefore INT1 has glitch suppression while INTO does not Table 11 Summary of interrupts Description Interrupt flag Vector Interrupt enable Interrupt Arbitration bit s address bit s priority ranking down wake up External interrupt 0 IEO 0003h 0 0 IPOH O IPO O 1 highest Yes Timer 0 interrupt TFO 000Bh ETO IENO 1 1 IPO 1 4 No External interrupt 1 IE1 0013h EX1 IENO 2 IPOH 2 0 2 7 Yes Timer 1 interrupt TF1 001Bh ET1 IENO 3 IPOH 3 IPO 3 10 No Serial port
62. the Keypad Interrupt Control Register KBCON is set when the condition is matched while the Keypad Interrupt function is active An interrupt will be generated if it has been enabled by setting the EKBI bit in IEN1 register and EA 1 The PATN_SEL bit in the Keypad Interrupt Control Register KBCON is used to define equal or not equal for the comparison In order to use the Keypad Interrupt as an original KBI function like in the 87LPC76x series the user needs to set KBPATN OFFH and PATN_SEL 0 not equal then any key connected to PortO which is enabled by KBMASK register is will cause the hardware to set KBIF 1 and generate an interrupt if it has been enabled The interrupt may be used to wake up the CPU from Idle or Power down modes This feature is particularly useful in handheld battery powered systems that need to carefully manage power consumption yet also need to be convenient to use In order to set the flag and cause an interrupt the pattern on Port 0 must be held longer than 6 CCLKs Table 90 Keypad Pattern register KBPATN address 93h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol KBPATN 7 KBPATN 6 KBPATN 5 4 KBPATN 2 KBPATN 1 KBPATN O Reset 1 1 1 1 1 1 1 1 Table 91 Keypad Pattern register KBPATN address 93h bit description Bit Symbol Access Description 0 7 7 0 R W Pattern bit O bit 7 Table 92 Keypad Control register KBCON address 94h bit allocation
63. the frequency of the internal RC oscillator During reset 1 TRIM 1 these bits are loaded with a stored factory calibration value When writing to either i bit 6 or bit 7 of this register care should be taken to preserve the current TRIM value 2 TRIM 2 by reading this register modifying bits 6 or 7 as required and writing the result to 3 TRIM 3 this register 4 TRIM 4 5 TRIM 5 6 ENCLK when 1 is output on the XTAL2 pin provided the crystal oscillator is not being used 7 RCCLK when 1 selects the RC Oscillator output as the CPU clock CCLK This allows for fast switching between any clock source and the internal RC oscillator without needing to go through a reset cycle 2 6 Watchdog oscillator option The watchdog has a separate oscillator which has a frequency of 400 kHz calibrated to 5 96 at room temperature This oscillator can be used to save power when a high clock frequency is not needed 2 7 External clock input option In this configuration the processor clock is derived from an external source driving the XTAL1 P3 1 pin The rate may be from 0 Hz up to 18 MHz XTAL2 P3 0 pin may be used as a standard port pin or a clock output When using an oscillator frequency above 12 Mhz BOE1 bit UCFG1 5 and BOEO bit UCFG1 3 are required to hold the device in reset at power up until Vpp has reached its specified level quartz crystal or ceramic resonator XTAL1 Ji 1 1 i XTAL2 002aad364 Note
64. type Command data function 06 Read Global CRC 00 06 Where xxxx required field but value is a don t care cc checksum Example 00000006 07 Direct Load of Baud Rate 02xxxx07HHLLcc Where xxxx required field but value is a don t care HH high byte of timer LL low byte of timer cc checksum Example 02000007FFFFF9 08 Reset MCU 00xxxx08cc Where xxxx required field but value is a don t care cc checksum Example 00000008F8 In application programming IAP Several In Application Programming IAP calls are available for use by an application program to permit selective erasing and programming of Flash sectors pages security bits configuration bytes and device id All calls are made through a common interface PGM MTP The programming functions are selected by setting up the microcontroller s registers before making a call to PGM_MTP at The IAP calls are shown in Table 110 IAP authorization key IAP functions which write or erase code memory require an authorization key be set by the calling routine prior to performing the IAP function call This authorization key is set by writing 96H to RAM location FFH The following example was written using the Keil C compiler The methods used to access a specific physical address in memory may vary with other compilers include ABSACC H enable absolute memory access define key DBYTE OxFF force key to be at a
65. will vectored to the corresponding interrupt UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 58 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 50 CCU interrupt control register TICR2 address C9h bit description continued Bit Symbol Description 5 TOCIE2C Output Compare Channel Interrupt Enable Bit If EA bit and this bit are set to 1 when compare channel C is enabled and the contents of TH2 TL2 match that of OCRHC OCRLO the program counter will vectored to the corresponding interrupt 6 TOCIE2D Output Compare Channel D Interrupt Enable Bit If EA bit and this bit are set to 1 when compare channel D is enabled and the contents of TH2 TL2 match that of OCRHD OCRLD the program counter will vectored to the corresponding interrupt 7 TOIE2 CCU Timer Overflow Interrupt Enable bit 10 UART UM10310 1 10 1 10 2 10 3 The P89LPC9321 has an enhanced UART that is compatible with the conventional 80651 UART except that Timer 2 overflow cannot be used as a baud rate source The P89LPC9321 does include an independent Baud Rate Generator The baud rate can be selected from the oscillator divided by a constant Timer 1 overflow or the independent Baud Rate Generator In addition to the baud rate generation enhancements over the standard 80C51 UART include Framing Error detection break detect automatic address recognition selectable double buf
66. will be has been returned recognized General call address will be recognized if IZADR 0 1 read data byte 1 0 0 0 Switched to not addressed SLA UM10310_1 read data byte 1 0 0 mode no recognition of own SLA or General call address A START condition will be transmitted when the bus becomes free Switched to not addressed SLA mode Own slave address will be recognized General call address will be recognized if IBADR 0O 1 A START condition will be transmitted when the bus becomes free NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 82 of 139 NXP Semiconductors UM10310 Table 75 Slave Receiver mode continued P89LPC9321 User manual Status code Status of the 2 Application software response Next action taken by 125 hardware to from I2DAT to I2CON hardware STA STO A STOP condition I2DAT action 0 0 0 0 Switched to not addressed SLA or repeated mode no recognition of own SLA or START condition General call address hasbeenreceived I2DAT action 0 0 0 1 Switched to not addressed SLA while still mode Own slave address will be addressed as recognized General call address SLA REC or will be recognized if IZADR 0 1 SLA TRX nol2DAT action 1 0 0 0 Switched to not addressed SLA mode no recognition of own SLA or General call address A START condition will be transmitt
67. 000 0 00 High frequency crystal High frequency crystal DIVM 01 10 11 High frequency crystal DIVM 1 00 High frequency crystal Internal RC oscillator 01 10 11 Internal RC oscillator 001 0 00 Medium frequency crystal Medium frequency crystal DIVM 01 10 11 Medium frequency crystal DIVM 1 00 Medium frequency crystal Internal RC oscillator 01 10 11 Internal RC oscillator UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 45 of 139 NXP Semiconductors UM1 031 0 UM10310_1 P89LPC9321 User manual Table 30 Real time Clock System Timer clock sources continued FOSC2 0 RCCLK RTCS1 0 RTC clock source CPU clock source 010 0 00 Low frequency crystal Low frequency crystal 01 DIVM 10 11 Low frequency crystal DIV 1 00 Low frequency crystal Internal RC oscillator 01 10 11 Internal RC oscillator 011 0 00 High frequency crystal Internal RC oscillator 01 Medium frequency crystal DIVM 10 Low frequency crystal 11 Internal RC oscillator DIVM 1 00 High frequency crystal Internal RC oscillator 01 Medium frequency crystal 10 Low frequency crystal 11 Internal RC oscillator 100 0 00 High frequency crystal Watchdog oscillator 01 Medium frequency crystal DIVM 10 Low frequency crystal 11 Watchdog oscillator DIVM 1 00 High frequency crystal Internal RC oscillator 01 Medium frequency crystal 10 Low frequency crystal 11 Internal RC oscillator 101 x XX undefined undefined 110 X undefined un
68. 008 All rights reserved User manual Rev 01 1 December 2008 120 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 108 In system Programming ISP hex record formats continued Record type Command data function 03 Miscellaneous Read Functions 01xxxx03sscc Where xxxx required field but value is a don t care ss subfunction code cc checksum Subfunction codes 002 UCFG1 01 UCFG2 02 Boot Vector 03 Status Byte 04 reserved 05 reserved 06 reserved 07 reserved 08 Security Byte 0 09 Security Byte 1 OA Security Byte 2 0B Security Byte 3 0 Security Byte 4 00 Security Byte 5 OE Security Byte 6 OF Security Byte 7 102 Manufacturer Id 112 Device Id 12 Derivative Id Example 0100000312 04 Erase Sector Page 03xxxx04ssaaaacc Where xxxx required field but value is a don t sector page address ss 01 erase sector ss 00 erase page cc checksum Example 03000004010000F8 05 Read Sector CRC 01xxxx05aacc Where xxxx required field but value is a don t care aa sector address high byte checksum Example 0100000504F6 UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 121 of 139 NXP Semiconductors UM1 031 0 UM10310_1 18 12 18 13 18 14 P89LPC9321 User manual Table 108 In system Programming ISP hex record formats continued Record
69. 1 1 3 1 0 031 XXXX XX11 P3M2 1 P3M2 0 0011 00 SMOD1 SMODO BOI GF1 GFO PMOD1 PMODO 00 0000 0000 RTCPD DEEPD VCPD 12 SPPD SPD CCUPD 00 0000 0000 D7 D6 D5 D4 D3 D2 D1 DO CY AC FO RS1 RSO 1 00 0000 0000 PTOAD 5 PTOAD 4 PTOAD 3 PTOAD 2 PTOAD 1 00 xx00 000x BOIF BOF POF R BK R WD R SF REX RTCF RTCS1 RTCSO ERTC RTCEN 600161 011x xx00 Jesf 1666541684 OLEOLINN SJ0jonpuoolul8S dXN jenuew sn 8002 1equie2eg L0 65130 OL OLEOLWN 78002 7 74 dXN Table 2 Special function registers continued indicates SFRs that are bit addressable Name RTCH RTCL SADDR SADEN SBUF SCON SSTAT SP SPCTL SPSTAT SPDAT TAMOD TCON TCR20 TCR21 Description SFR addr RTC register D2H high RTC register low Serial port address register Serial port B9H address enable Serial Portdata 99H buffer register Bit address Serial port 98H control Serial port BAH extended status register Stack pointer 81H SPI control E2H register SPI status E1H register SPI data E3H register Timer 0 and 1 8FH auxiliary mode Bit address Timer 0 and 1 88H control CCU control C8H register 0 CCU control F9H register 1 Bit functions and addresses Reset value MSB LSB Hex Binary 00161 0000 0000 00161 0000 0000 00 0000 0000 00 0000 0000
70. 110 0 2 049 5 12 ms 341 5 us 255 524 289 1 315 87 4 111 0 4097 10 2 ms 682 8 us 255 1 048 577 2 625 174 8 ms UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 104 of 139 NXP Semiconductors UM1 031 0 UM10310 1 P89LPC9321 User manual 15 3 Watchdog clock source The watchdog timer system has an on chip 400 KHz oscillator The watchdog timer can be clocked from the watchdog oscillator PCLK or external crystal oscillator refer to Figure 49 by configuring the WDCLK bit in the Watchdog Control Register WDCON and XTALWD bit in CLKCON register When the watchdog feature is enabled the timer must be fed regularly by software in order to prevent it from resetting the CPU Table 100 Watchdog input clock selection WDCLK WDCON 0 XTALWD CLKCON 4 Watchdog input clock selection 0 0 PCLK 1 0 watchdog oscillator X 1 External crystal oscillator WDCLK bit is used to switch between watchdog oscillator and PCLK And XTALWD bit is used to switch between watchdog oscillator PCLK and external crystal oscillator After changing clock source switching of the clock source will not immediately take effect As shown in Figure 51 the selection is loaded after a watchdog feed sequence In addition due to clock synchronization logic it can take two old clock cycles before the old clock source is deselected and then an additional two new clock cycles before the new clock Source is selected Sin
71. 2 Table 35 CCU prescaler control register low byte TPCR2L Table 67 2 Control register 12 address D8h bit address bit allocation 49 description ss 4 eo ssec 72 UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 135 of 139 NXP Semiconductors UM10310 Table 68 2 Status register 125 address D9h bit allocation eee bee Res 73 Table 69 2 Status register 12 address D9h bit description 73 Table 70 12 clock rates selection 74 Table 71 12C Control register 12 address D8h 74 Table 72 12C Control register 12 address D8h 76 Table 73 Master Transmitter mode 79 Table 74 Master Receiver mode 80 Table 75 Slave Receiver mode 81 Table 76 Slave Transmitter 83 Table 77 SPI Control register SPCTL address E2h bit allocation 85 Table 78 SPI Control register SPCTL address E2h bit description 52552054 86 Table 79 SPI Status register SPSTAT address 1 bit allocation 222 2 2 2 86 Table 80 SPI Status register SPSTAT address E1h bit description 86 Table 81 SPI Data register SPDAT address E3h bit allocation 87 Table 82 SPI master
72. 2 2 80 JC rel Jump on carry 1 2 2 40 JNC rel Jump carry 0 2 2 50 JB bit rel Jump on direct bit 1 3 2 20 JNB bit rel Jump on direct bit 0 3 2 30 JBC bit rel Jump on direct bit 1 and clear 3 2 10 JMP A DPTR Jump indirect relative DPTR 1 2 73 JZ rel Jump on accumulator 0 2 2 60 JNZ rel Jump on accumulator 0 2 2 70 CJNE A dir rel Compare A direct jne relative 3 2 5 CJNE Compare A immediate jne relative 3 2 B4 CJNE Rn d rel Compare register immediate relative 2 B8 to BF CJNE Ri d rel Compare indirect immediate relative 2 B6 to B7 DJNZ Rn rel Decrement register jnz relative 2 2 D8 to DF DJNZ dir rel Decrement direct byte jnz relative 3 2 D5 MISCELLANEOUS NOP No operation 1 1 00 UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 133 of 139 NXP Semiconductors UM10310 20 Legal information P89LPC9321 User manual 20 1 Definitions Draft The document is a draft version only The content is still under internal review and subject to formal approval which may result in modifications or additions NXP Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information 20 2 Disclaimers General Information in this document is believed to be accurate and reliable However NXP Se
73. 21 117 Boot ROM sha shoei RE ala neg 117 Power on reset code execution 117 Hardware activation of Boot Loader 118 In system programming ISP 118 Using the In system programming ISP 119 In application programming IAP 122 IAP authorization 122 Flash write enable 122 Configuration byte protection 123 IAP error status 123 User configuration bytes 127 User security 128 founded by 18 19 18 20 19 20 20 1 20 2 20 3 21 22 23 P89LPC9321 User manual Boot Vector 129 Boot status register 129 Instruction set 5 131 Legal information 134 0 5 22 2 22 134 Disclaimers 134 Trademarks 134 Tables caminum eedem 135 Figutes iia cius honor ne n 137 Corlents s ll RELIER E 138 Please be aware that important notices concerning this document and the product s described herein have been included in section Legal information NXP B V 2008 All rights reserved For more information please visit http www nxp com For sales office addresses please send an email to salesaddresses nxp com Date of release 1 December 2008 Document identifier UM10310 1
74. 3 bit register As the count rolls over from all 1s to all Os it sets the Timer interrupt flag TFn The count input is enabled to the Timer when TRn 1 and either 0 or INTn 1 Setting TNGATE 1 allows the Timer to be controlled by external input INTn to facilitate pulse width measurements TRn is a control bit in the Special Function Register TCON Table 29 The TnGATE bit is in the TMOD register The 13 bit register consists of all 8 bits of THn and the lower 5 bits of TLn The upper 3 bits of TLn are indeterminate and should be ignored Setting the run flag TRn does not clear the registers Mode 0 operation is the same for Timer 0 and Timer 1 See Figure 15 There are two different GATE bits one for Timer 1 TMOD 7 and one for Timer 0 TMOD 3 7 2 Mode 1 Mode 1 is the same as Mode 0 except that all 16 bits of the timer register THn and TLn are used See Figure 16 UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 40 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual 7 3 Mode 2 Mode 2 configures the Timer register as an 8 bit Counter TLn with automatic reload as shown in Figure 17 Overflow from TLn not only sets TFn but also reloads TLn with the contents of THn which must be preset by software The reload leaves THn unchanged Mode 2 operation is the same for Timer 0 and Timer 1 7 4 Mode 3 When Timer 1 is in Mode it is stopped The eff
75. 4 Table 98 Watchdog Timer Control register WDCON address A7h bit description 104 Table 99 Watchdog timeout vales 104 Table 100 Watchdog input clock selection 105 Table 101 AUXR 1 register address A2h bit allocation 107 Table 102 AUXR1 register address A2h bit description 108 Table 103 Data EEPROM control register DEECON UM10310_1 P89LPC9321 User manual address F1h bit allocation 109 Table 104 Data EEPROM control register DEECON address 1 bit description 109 Table 105 Flash Memory Control register FMCON address E4h bit allocation 115 Table 106 Flash Memory Control register FMCON address E4h bit description 115 Table 107 Boot loader address and default Boot vector 118 Table 108 In system Programming ISP hex record 120 Table 109 IAP error status 124 Table 110 1 function calls 125 Table 111 Flash User Configuration Byte 1 UCFG1 bit allocation 127 Table 112 Flash User Configuration Byte 1 UCFG1 bit description 127 Table 113 Oscillator type selection 128 Table 114 Flash User Configuration Byte 2 UCFG2 bit allocation s zee eek pe r 128 Table 115 Flash User Configuration Byte 2 UCFG2 bit lt
76. 46 CCU interrupt status encode register TISE2 address DEh bit description Bit Symbol Description 2 0 ENCINT 2 0 Interrupt Encode output When multiple interrupts happen more than one interrupt flag is set in CCU Interrupt Flag Register TIFR2 The encoder output can be read to determine which interrupt is to be serviced The user must write a logic 0 to clear the corresponding interrupt flag bit in the TIFR2 register after the corresponding interrupt has been serviced Refer to Table 48 for TIFR2 description 000 No interrupt pending 001 Output Compare Event D interrupt lowest priority 010 Output Compare Event C interrupt 011 Output Compare Event B interrupt 100 Output Compare Event A interrupt 101 Input Capture Event B interrupt 110 Input Capture Event A interrupt 111 CCU Timer Overflow interrupt highest priority 37 Reserved UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 57 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 47 CCU interrupt flag register TIFR2 address E9h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol TOIF2 TOCF2D TOCF2C TOCF2B TOCF2A TICF2B TICF2A Reset 0 0 0 0 0 X 0 0 Table 48 CCU interrupt flag register TIFR2 address E9h bit description Bit Symbol Description 0 TICF2A Input Capture Channel A Interrupt Flag Bit Set by hardware when an input capture event is detec
77. 5 2 Additional bits in WDCON allow the user to select the clock source for the WDT and the prescaler When the timer is not enabled to reset the device on underflow the WDT can be used in timer mode and be enabled to produce an interrupt IENO 6 if desired The Watchdog Safety Enable bit WDSE UCFG1 4 along with WDTE is designed to force certain operating conditions at power up Refer to Table 96 for details Figure 51 shows the watchdog timer in watchdog mode It consists of a programmable 13 bit prescaler and an 8 bit down counter The down counter is clocked decremented by a tap taken from the prescaler The clock source for the prescaler is either PCLK UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 101 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual external crystal oscillator or the watchdog oscillator selected by the WDCLK bit in the WDCON register and XTALWD bit in the CLKCON register Note that switching of the clock sources will not take effect immediately see Section 15 3 The watchdog asserts the watchdog reset when the watchdog count underflows and the watchdog reset is enabled When the watchdog reset is enabled writing to WDL or WDCON must be followed by a feed sequence for the new values to take effect If a watchdog reset occurs its behavior is similar to power on reset Both POF and BOF are cleared Table 96 Watchdog timer configuration
78. 58 Serial Port Status register SSTAT address BAh address 8Fh bit description 40 bit allocation 62 Table 28 Timer Counter Control register TCON address Table 59 Serial Port Status register SSTAT address BAh 88h bit allocation 41 bit description 63 Table 29 Timer Counter Control register TCON address Table 60 FE and RI when SM2 1 in Modes 2 and 66 88h bit description 41 Table 61 Slave 0 1 examples 69 Table 30 Real time Clock System Timer clock sources 45 Table 62 Slave 0 1 2 examples 69 Table 31 Real time Clock Control register RTCCON Table 63 12 data register IBDAT address DAh bit address D1h bit allocation 46 allocation 71 Table 32 Real time Clock Control register RTCCON Table 64 12 slave address register 2 address DBh address D1h bit description 47 bit allocation 71 Table 33 CCU prescaler control register high byte Table 65 2 slave address register IZADR address DBh TPCR2H address CBh bit allocation 49 bit 71 Table 34 CCU prescaler control register high byte Table 66 12 Control register ICON address D8h bit TPCR2H address CBh bit description 49 allocation illl RES 7
79. 8 toggle Td oT T pin P0 7 ENT1 AUXR1 5 002aaa922 Fig 18 Timer counter 0 Mode 3 two 8 bit counters overflow POLS o o7 TFn interrupt control and 256 THn on rising transition toggle TRn Gate THn INTn pin 8 bits ENTn 002aaa923 Fig 19 Timer counter 0 or 1 in mode 6 PWM auto reload 7 6 Timer overflow toggle output Timers 0 and 1 can be configured to automatically toggle a port output whenever a timer overflow occurs The same device pins that are used for the TO and T1 count inputs and PWM outputs are also used for the timer toggle outputs This function is enabled by control bits ENTO and in the AUXR1 register and apply to Timer 0 and Timer 1 respectively The port outputs will be a logic 1 prior to the first timer overflow when this mode is turned on In order for this mode to function the C T bit must be cleared selecting PCLK as the clock source for the timer 8 Real time clock system timer The P89LPC9321 has a simple Real time Clock System Timer that allows a user to continue running an accurate timer while the rest of the device is powered down The Real time Clock can be an interrupt or a wake up source see Figure 20 UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 43 of 139 NXP Semiconductors UM10310 P89LPC9321 User manual The Real time Clock is a 23 bit
80. AD CLR C clear error flag if good RET and return BAD SETB C set error flag RET and return A C language routine to load the page register and perform an erase program operation is shown below include lt REG9351 H gt unsigned char idata dbytes 64 data buffer unsigned char Fm stat status result bit PGM USER unsigned char unsigned char bit prog fail void main prog_fail PGM_USER 0x1F 0xC0 bit PGM_USER unsigned char page_hi unsigned char page_lo define LOAD0x00 clear page register enable loading define EP0x68 erase amp program page unsigned char i loop count FMCON LOAD load command clears page reg FMADRH page hi FMADRL page lo write my page address to addr regs for 1 0 1 lt 64 1 1 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 116 of 139 NXP Semiconductors UM1 031 0 UM10310_1 18 5 18 6 18 7 18 8 P89LPC9321 User manual FMDATA dbytes i FMCON EP erase amp prog page command Fm_stat FMCON read the result status if Fm stat amp Ox0F 0 prog fail 1 else prog fail 0 return prog fail In circuit programming ICP In Circuit Programming is a method intended to allow commercial programmers to program and erase these devices without removing the microcontroller from the system The In Circuit Programming facility consists of a series of internal hardware resources to facilitate
81. ASH is detected during a program or erase cycle FMCMD 3 W Command byte bit 3 4 7 reserved 4 FMCMD 4 W Command byte bit 4 5 FMCMD 5 W Command byte bit 5 6 FMCMD 6 W Command byte bit 6 7 FMCMD 7 W Command byte bit 7 An assembly language routine to load the page register and perform an erase program operation is shown below LES EE REAR ERE AL AEREE EER Ris pgm user code RRR ck ck ke ke ke kk kk ke e e Inputs m S R3 number of bytes to program byte 4 address MSB byte ja R5 page address LSB byte i R7 pointer to data buffer RAM byte Outputs R7 status byte 0 103101 NXP 2008 All rights reserved User manual Rev 01 1 December 2008 115 of 139 NXP Semiconductors UM10310 UM10310_1 P89LPC9321 User manual clear on no error set on error i skkxkxkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk k 1 LOAD EQU 00H EP EQU 68H PGM_USER MOV FMCON LOAD load command clears page register OV FMADRH R4 get high address Ov FMADRL R5 get low address MOV 7 i OV RO A get pointer into RO LOAD OV FMDAT QR write data to page register INC RO ipoint to next byte DJNZ R3 LOAD PAGE do until count is zero Ov FMCON EP else erase amp program the page OV R7 FMCON status for return oV R7 read status ANL A 0FH save only four lower bits JNZ B
82. BOEO Brownout Detect Configuration see Section 5 1 Brownout detection UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 127 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 112 Flash User Configuration Byte 1 UCFG1 bit description continued Bit Symbol Description WDSE Watchdog Safety Enable bit Refer to Table 96 Watchdog timer configuration for details BOE1 Brownout Detect Configuration see Section 5 1 Brownout detection 6 RPE Reset pin enable When set 1 enables the reset function of pin P1 5 When cleared P1 5 may be used as an input pin NOTE During a power up sequence the RPE selection is overridden and this pin will always functions as a reset input After power up the pin will function as defined by the RPE bit Only a power up reset will temporarily override the selection defined by RPE bit Other sources of reset will not override the RPE bit 7 WDTE Watchdog timer reset enable When set 1 enables the watchdog timer reset When cleared 0 disables the watchdog timer reset The timer may still be used to generate an interrupt Refer to Table 96 Watchdog timer configuration for details Table 113 Oscillator type selection FOSC 2 0 Oscillator configuration 111 External clock input on XTAL1 100 Watchdog Oscillator 400 kHz 5 011 Internal RC oscillator 7 373 MHz 1 96 010 Low frequency cry
83. C9321 User manual 8 NY 1 ADDRESS REGISTER I2ADR COMPARATOR INPUT FILTER P1 3 SDA OUTPUT SHIFT REGISTER STAGE BIT COUNTER ARBITRATION amp CCLK SYNC LOGIC TIMING m FILTER AND CONTROL 2 P1 2 SCL LOGIC SERIAL CLOCK interrupt STAGE timer 1 overflow 2 CONTROL REGISTERS amp I2SCLH scL DUTY CYCLE REGISTERS I2SCLL aisn STATUS SAUS OUS DECODER I2STAT STATUS REGISTER 002 899 2 Fig 37 1 C serial interface block diagram NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 78 of 139 NXP Semiconductors UM10310 P89LPC9321 User manual Table 73 Master Transmitter mode Status code Status of the I2C Application software response Next action taken by I2C 125 hardware to from I2DAT to I2CON hardware STA STO AA 08H A START Load SLA W X 0 0 X SLA W will be transmitted condition has ACK bit will be received been transmitted 10H A repeat START Load SLA Wor x 0 0 X As above SLA W will be condition has Load SLA R transmitted I C bus switches been transmitted to Master Receiver Mode 18h SLA W has been Load data byte or 0 0 0 X Data byte will be transmitted transmitted ACK ACK bit will be received has been received no I2DAT action 1 0 x Repeated START will be or transmitted I2DAT action 0 1
84. CLL When the internal SCL generator is selected for the 2 interface by setting CRSEL 0 in the I2CON register the user must set values for registers 25 and I2SCLH to select the data rate 25 defines the number of PCLK cycles for SCL high I2SCLL defines the number of PCLK cycles for SCL low The frequency is determined by the following formula Bit Frequency 2 IBSCLH I2SCLL Where is the frequency of PCLK NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 73 of 139 NXP Semiconductors UM1 031 0 UM10310_1 11 6 11 6 1 P89LPC9321 User manual The values for I2SCLL and I2SCLH do not have to be the same the user can give different duty cycles for SCL by setting these two registers However the value of the register must ensure that the data rate is in the 2 data rate range of 0 to 400 kHz Thus the values of I2SCLL and I2SCLH have some restrictions and values for both registers greater than three PCLKs are recommended Table 70 12C clock rates selection Bit data rate Kbit sec at fosc I2SCLL CRSEL 7 373 MHz 3 6865 MHz 1 8433 MHz 12 MHz 6 MHz I2SCLH 6 0 307 154 7 0 263 132 8 0 230 115 375 9 0 205 102 333 10 0 369 184 92 300 15 0 246 123 61 400 200 25 0 147 74 37 240 120 30 0 123 61 31 200 100 50 0 74 37 18 120 60 60 0 61 31 15 100 50 100 0 37 18 9 60 30 150 0 25 12 6 40 20 200
85. D interrupt BOD reset voltage should be lower than BOD interrupt trip point Table 15 gives BOD trip points configuration In total power down mode PMOD1 PMODO 11 the circuitry for the Brownout Detection is disabled for lowest power consumption When PMOD1 PMODO not equal to 11 reset is always on and interrupt is enabled by setting PCON 4 bit Please refer Table 16 for BOD reset and BOD interrupt configuration BOF bit RSTSRC 5 BOD reset flag is default as 0 and is set when BOD reset is tripped BOIF bit RSTSRC 6 BOD interrupt flag is default as 0 and is set when BOD interrupt is tripped BOD EEPROM FLASH is used for flash Data EEPROM program erase protection BOD EEPROM FLASH is always on except in power down or total power down mode 1 1 It can not be disabled in software EEPROM FLASH has only 1 trip voltage level of 2 4 V When voltage supply is lower than 2 4 V the BOD EEPROM FLASH is tripped and flash Data EEPROM program erase is blocked If brownout detection is enabled the brownout condition occurs when Vpp falls below the brownout trip voltage and is negated when rises above the brownout trip voltage NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 33 of 139 NXP Semiconductors UM1 031 0 UM10310 1 5 2 5 3 P89LPC9321 User manual For correct activation of Brownout Detect certain Vpp rise and fall times must be Obser
86. DAT to I2CON hardware STA 5 SI AA 60H Own SLA W has nol2DAT action x 0 0 0 Data byte will be received and NOT been received or ACK will be returned ACK has been I2DAT action 0 0 1 Data byte will be received and received will be returned 68H Arbitration lostin No I2DAT action x 0 0 0 Data byte will be received and NOT SLA R Was or ACK will be returned master Own I2DAT action 0 0 1 Data byte will be received and SLA W has been will be returned received ACK returned 70H General call 2 action x 0 0 0 Data byte will be received and NOT address 00H has or ACK will be returned been received no I2DAT action x 0 0 1 Data byte will be received and ACK has been will be returned returned 78H Arbitration lostin nol2DAT action x 0 0 0 Data byte will be received and NOT SLA R W as or ACK will be returned master General 2 action 0 0 1 Data byte will be received and call address has will be returned been received ACK bit has been returned 80H Previously Read data byte or x 0 0 0 Data byte will be received and NOT addressed with ACK will be returned own SLA address read data byte x 0 0 1 Data byte will be received ACK bit Data has been will be returned received ACK has been returned UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 81 of 139 NXP Semiconductors UM10310 Table 75 Slave Receiver mode continued P89LPC9321 User
87. Data EEPROM cycle The user should disable interrupts during a Data EEPROM write operation see Section 17 2 Data EEPROM write A byte can be written via polling or interrupt 1 Write to DEECON with ECTL1 ECTLO DEECON 5 4 00 and EWERR1 EWERRO DEECON 2 1 00 and correct bit 8 address to EADRS Note that if the correct values are already written to DEECON there is no need to write to this register 2 Write the data to the DEEDAT register 3 Write address bits 7 to 0 to DEEADR 4 Poll EWERR flag If EWERR1 DEECON 2 bit is logic 1 BOD EEPROM occurred Vpp lt 2 4V and Data EEPROM program is blocked NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 110 of 139 NXP Semiconductors UM1 031 0 17 3 17 4 17 5 17 6 UM10310 1 P89LPC9321 User manual 5 If both the EIEE IEN1 7 bit and the EA IENO 7 bit are logic 1s wait for the Data EEPROM interrupt then read poll the EEIF DEECON 7 bit until it is set to logic 1 If EIEE or EA is logic the interrupt is disabled and only polling is enabled When EEIF is logic 1 the operation is complete and data is written 6 Poll EWERRO flag If EWERRO DEECON 1 bit is logic 1 it means BOD EEPROM occurred Vpp 2 4V during program or erase and the previous operation may not be correct As a write to the DEEDAT register followed by a write to the DEEADR register will automatically set off a write if DEECON 5 4
88. E change detect EC P2 2 D P0 0 2 i d OE2 CN2 002aad561 13 2 13 3 13 4 UM10310_1 Internal reference voltage An internal reference voltage Vref og may supply a default reference when a single comparator input pin is used Please refer to the P89LPC9321 data sheet for specifications Comparator input pins Comparator input and reference pins maybe be used as either digital I O or as inputs to the comparator When used as digital I O these pins are 5 V tolerant However when selected as comparator input signals in CMPn lower voltage limits apply Please refer to the P89LPC9321 data sheet for specifications Comparator interrupt Each comparator has an interrupt flag CMFn contained in its configuration register This flag is set whenever the comparator output changes state The flag may be polled by software or may be used to generate an interrupt The two comparators use one common interrupt vector The interrupt will be generated when the interrupt enable bit EC in the IEN1 register is set and the interrupt system is enabled via the EA bit in the IENO register If both comparators enable interrupts after entering the interrupt service routine the user will need to read the flags to determine which comparator caused the interrupt When a comparator is disabled the comparator s output COx goes high If the comparator output was low and then is disabled the resulting t
89. F and this bit will be set while the other flag bits are cleared BOD Reset Flag When BOD Reset is activated this bit is set It will remain set until cleared by software by writing a logic 0 to the bit Note On a Power on reset both POF and this bit will be set while the other flag bits are cleared BOD Interrupt Flag When BOD Interrupt is activated this bit is set It will remain set until cleared by software by writing a logic O to the bit reserved 6 1 Reset vector Following reset the P89LPC9321 will fetch instructions from either address 0000h or the Boot address The Boot address is formed by using the Boot Vector as the high byte of the address and the low byte of the address 00 The Boot address will be used if a UART NXP B V 2008 All rights reserved Table 23 0 REX R SF 2 RWD 3 4 POF 5 6 7 UM10310_1 User manual Rev 01 1 December 2008 38 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual break reset occurs or the non volatile Boot Status bit BOOTSTAT 0 1 or the device has been forced into ISP mode Otherwise instructions will be fetched from address OOOOH 7 Timers 0 and 1 The P89LPC9321 has two general purpose counter timers which are upward compatible with the 80C51 Timer 0 and Timer 1 Both can be configured to operate either as timers or event counters see Table 25 An option to automatically toggle the Tx pin upon timer overflo
90. F1 Timer 1 overflow flag Set by hardware on Timer Counter overflow Cleared by hardware when the interrupt is processed or by software except in mode 6 see above when it is cleared in hardware C T 0 overflow PCLK o7 Tin Hn TFn interrupt n pin 1 C T 21 5 bits 8 bits toggle TRn 077 pin ENTn 002aaa919 Fig 15 Timer counter 0 or 1 in Mode 0 13 bit counter C T 0 overflow PCLK Tapi Thin TFn gt interrupt n pin 1 C T 1 i control 8 bits 8 bits toggle TRn Gate INTn ENTn 002aaa920 Fig 16 Timer counter 0 or 1 in mode 1 16 bit counter PCLK overflow o7 TFn interrupt O C T 1 control toggle TRn oT 0 Tn pin Gate pin ENTn 002 921 Fig 17 Timer counter 0 or 1 Mode 2 8 bit auto reload UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 42 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Bak 0d n overflow TO pi interrupt C T 1 control 8 bitS toggle TRO oT TO pin Gate P1 2 open drain INTO pin ENTO AUXR1 4 overflow Osc 2 TPO TF1 gt interrupt contro 8 6
91. H 651 JO VL OLEOLWN 8002 7 78 dXN Table 2 Special function registers continued indicates SFRs that are bit addressable Name KBCON KBMASK KBPATN OCRAH OCRAL OCRBH OCRBL OCRCH OCRCL OCRDH OCRDL Po Description SFR addr Keypad control 94H register Keypad 86H interrupt mask register Keypadpattern 93H register Output EFH compare A register high Output EEH compare A register low Output FBH compare B register high Output FAH compare B register low Output FDH compare C register high Output FCH compare C register low Output FFH compare D register high Output FEH compare D register low Bit address Port 0 80H Bit address Bit functions and addresses Reset value MSB LSB Hex Binary KBIF 001 00 _SEL 00 0000 0000 FF 1111 1111 00 0000 0000 00 0000 0000 00 0000 0000 00 0000 0000 00 0000 0000 00 0000 0000 00 0000 0000 00 0000 0000 87 86 85 84 83 82 81 80 1 7 1 CMPREF CIN1B CIN2A CIN2B KB6 KB5 KB4 KB3 KB2 KB1 KBO 97 96 95 94 93 92 91 90 Jesf 1666541684 OLEOLINN SJ0jonpuoolul9S dXN jenuew sn 8002 1equie2eg 10 6611061 t OLEOLWN 78002 7 74 dXN Table 2 Special function registers continued indicates SFRs that are bit addr
92. H generator SCL duty cycle register high Serial clock DCH generator SCL duty cycle register low 2 status D9H register Input capture A register high Input capture register low Input capture B AFH register high Input capture register low Bit address Interrupt A8H enable 0 Bit address Interrupt E8H enable 1 Bit address Interrupt B8H priority 0 Interrupt B7H priority 0 high Bit address Interrupt F8H priority 1 Interrupt F7H priority 1 high Bit functions and addresses Reset value MSB STA 4 AF EA EF EIEE BF FF PIEE PIEEH STA 3 AE EWDRT EE EST BE PWDRT PWDRTH FE PST PSTH STA 2 AD EBO ED BD PBO PBOH FD STA 1 AC ES ESR EC ECCU BC PS PSR PSH PSRH FC PCCU 5 0 ESPI BB PT1 PSPI PSPIH AA EX1 EA EC BA PX1 PX1H FA PC PCH A9 ETO E9 EKBI B9 PTO PTOH F9 PKBI PKBIH LSB A8 EXO E8 EI2C B8 PXO F8 2 PI2CH Hex Binary 00 0000 0000 00 0000 0000 F8 1111 1000 00 0000 0000 00 0000 0000 00 0000 0000 00 0000 0000 00 0000 0000 001 00 0 0000 000 000 0000 0011 000 0000 0011 00 0 0000 0001 00 0 0000 Jesf 1666541684 OLEOLINN SJ0jonpuoolul9S dXN jenuew sn 8002 1equie2eg 10 e
93. ILLATOR WITH CLOCK BROWNOUT RESET SONATOR xTAL2 DOUBLER 002aae 102 Fig 5 Block diagram UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 9 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual 1 5 Special function registers Remark SFR accesses are restricted in the following ways User must not attempt to access any SFR locations not defined Accesses to any defined SFR locations must be strictly for the functions for the SFRs SFR bits labeled 0 or 1 can only be written and read as follows Unless otherwise specified must be written with 0 but can return any value when read even if it was written with 0 It is a reserved bit and may be used future derivatives 0 must be written with 0 and will return a 0 when read 1 must be written with 1 and will return a 1 when read UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 10 of 139 jenuew sn 8002 1equie2eg L0 651 JO LL OLEOLWN 8002 7 74 dXN Table 2 Special function registers indicates SFRs that are bit addressable Name ACC AUXR1 B BRGROE BRGR1EI BRGCON CCCRA CCCRB CCCRC CCCRD 1 CMP2 DEECON Description SFR addr Bit address Accumulator EOH Auxiliary A2H fu
94. MOSI and SPICLK are push pull when the active Master is active 0 Slave output input 1 Master input output output 1 Selected as a port function 2 The MSTR bit changes to logic 0 automatically when SS becomes low in input mode and SSIG is logic 0 UM10310_1 12 2 12 3 12 4 Additional considerations for a slave When CPHA equals zero SSIG must be logic 0 and the SS pin must be negated and reasserted between each successive serial byte If the SPDAT register is written while SS is active low a write collision error results The operation is undefined if CPHA is logic 0 and SSIG is logic 1 When CPHA equals one SSIG may be set to logic 1 If SSIG 0 the SS pin may remain active low between successive transfers can be tied low at all times This format is sometimes preferred in systems having a single fixed master and a single slave driving the MISO data line Additional considerations for a master In SPI transfers are always initiated by the master If the SPI is enabled SPEN 1 and selected as master writing to the SPI data register by the master starts the SPI clock generator and data transfer The data will start to appear on MOSI about one half SPI bit time to one SPI bit time after data is written to SPDAT Note that the master can select a slave by driving the SS pin of the corresponding device low Data written to the SPDAT register of the master is shifted out of the MOSI pin of the master to
95. N SETB ACC 2 set WD RUN 1 OV WDL 0FFh New count to be loaded to 8 bit down counter CLR EA disable interrupt OV WDCON ACC write back to WDCON after the watchdog is enabled a feed ust occur immediately OV WFEED1 0A5h do watchdog feed part 1 OV WFEED2 05Ah do watchdog feed part 2 SETB EA enable interrupt In timer mode WDTE 0 WDCON is loaded to the control register every CCLK cycle no feed sequence is required to load the control register but a feed sequence is required to load from the WDL SFR to the 8 bit down counter before a time out occurs The number of watchdog clocks before timing out is calculated by the following equations 2 PRE tclks WDL 1 1 1 where PRE is the value of prescaler PRE2 to PREO which can be the range 0 to 7 and WDL is the value of watchdog load register which can be the range of 0 to 255 The minimum number of tclks is tclks 20 9 04 1 1 33 2 The maximum number of tclks is NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 103 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual 2 255 1 1 1048577 3 Table 99 shows sample P89LPC9321 timeout values Table 97 Watchdog Timer Control register WDCON address A7h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol PRE2 PRE1 PREO WDRUN WDTOF WDCLK Reset 1 1 1 X 1 1 0 1 Table 98 Watchdog Timer Control regi
96. OOTSTAT register This bit is cleared by writing the Clear Configuration Protection CCP command to FMCON followed by writing 96H to FMDATA Disable Clear Configuration Protection command If Programmed to 1 the Clear Configuration Protection CCP command is disabled during ISP or IAP modes This command can still be used in ICP or parallel programmer modes If programmed to 0 the CCP command can be used in all programming modes This bit is set by programming the BOOTSTAT register This bit is cleared by writing the Clear Configuration Protection CCP command in either ICP or parallel programmer modes UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 130 of 139 NXP Semiconductors UM10310 19 Instruction set P89LPC9321 User manual Table 123 Instruction set summary Mnemonic Description Bytes Cycles Hex code ARITHMETIC ADD A Rn Add register to A 1 1 28 to 2F ADD AJir Add direct byte to A 2 1 25 ADD A Ri Add indirect memory to A 1 1 26 to 27 ADD A data Add immediate to A 2 1 24 ADDC A Rn Add register to A with carry 1 1 38 to 3F ADDC A dir Add direct byte to A with carry 2 1 35 ADDC A Ri Add indirect memory to A with carry 1 1 36 to 37 ADDC A data Add immediate to A with carry 2 1 34 SUBB A Rn Subtract register from A with borrow 1 1 98 to 9F SUBB A dir Subtract direct byte from A with borrow 2 1 95 SUBB A Ri Subtract indirect memory from A w
97. Or will be returned 48h SLA R has been 2 action 1 0 0 X Repeated START will be transmitted transmitted NOT or ACK has been nol2DAT action 0 1 0 x STOP condition will be transmitted received STO will be reset l2DAT action 1 1 0 X STOP condition followed by a START UM10310 1 or condition will be transmitted STO flag will be reset NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 80 of 139 UM10310 P89LPC9321 User manual NXP Semiconductors Table 74 Master Receiver mode continued Siatus code Status of the I2C Application software response Next action taken by I2C hardware 125 hardware to from I2DAT I2CON STA STO STA 50h Data byte has Read data byte 0 0 0 0 Data byte will be received NOT ACK been received bit will be returned ACK has been read data byte 0 0 0 1 Data byte will be received ACK bit returned will be returned 58h Data byte has Read data byte or 1 0 X Repeated START will be transmitted been received read data byte 0 STOP condition will be transmitted NACK has been STO flag will be reset returned read data byte 1 1 0 STOP condition followed by START condition will be transmitted STO flag will be reset Table 75 Slave Receiver mode Status code Status of the IPC Application software response Next action taken by 2 125 hardware to from I2
98. R 1CO0h UART auto baud 4 REG BANKS R 7 0 1BFFh I2C SPI etc 1 60 00h 1800h SECTORG data memory 17FFh DATA IDATA P SECTOR 5 FFFFh 13FFh 4 EXTENDED SFRs FFBOh OBFFh Gandhi SECTOR 2 RESERVED 07FFh SECTOR 1 O1FFh 0400h DATA EEPROM O3FFh XDATA SECTOR O 512 BYTES 512 BYTES 0000h SFR ACCESS 0000h 0000h data EEPROM 002aae090 Fig 6 P89LPC9321 memory UM10310_1 The various P89LPC9321 memory spaces are as follows DATA 128 bytes of internal data memory space 00h 7Fh accessed via direct or indirect addressing using instruction other than MOVX and MOVC All or part of the Stack may be in this area IDATA Indirect Data 256 bytes of internal data memory space 00h FFh accessed via indirect addressing using instructions other than MOVX and MOVC or part of the Stack may be in this area This area includes the DATA area and the 128 bytes immediately above it SFR Special Function Registers Selected CPU registers and peripheral control and status registers accessible only via direct addressing XDATA External Data or Auxiliary RAM Duplicates the classic 80C51 64 kB memory space addressed via the MOVX instruction using the DPTR RO or R1 All or part of this space could be implemented on chip The P89LPC9321 has 512 bytes of on chip XDATA memory plus extended SFRs located in XDATA CODE 64 kB of Co
99. RIM2 4XTRIM1 4XTRIMO 2XTRIM3 2XTRIM2 2XTRIM1 2XTRIMO register RTCDATH Real time clock FFBFH 00 0000 0000 data register high RTCDATL Real time clock FFBEH 00 0000 0000 data register low Extended SFRs are physically located on chip but logically located in external data memory address space XDATA The A DPTR and MOVX instructions are used to access these extended SFRs 2 The BOICFG1 0 will be copied from UCFG1 5 and UCFG1 3 when power on reset 3 register reset value comes from UCFG1 and UCFG2 The reset value of CLKCON 2 to CLKCON 0 come from UCFG1 2 to UCFG1 0 and reset value of CLKDBL bit comes from UCFG2 7 4 On power on reset and watchdog reset the PGAxTRIM8X16X and PGAxTRIM2XAX registers are initialized with a factory preprogrammed value Other resets will not cause initialization Jesf 1666541684 OLEOLINN SJ0jonpuoolul8S dXN NXP Semiconductors UM10310 1 6 Memory organization P89LPC9321 User manual read protected IAP calls only zc mM v FFOOh entry 1 FFEFh FFh PEERY Veet coy Sant points SPECIAL FUNCTION FF1Fh 128 BYTES ON CHIP 51 ASM code Pas REGISTERS DATA MEMORY STACK C code DIRECTLY ADDRESSABLE AND INDIR ADDR Soh ATA 7Fh h ISP 128 BYTES ON CHIP rana 5128 iP aud iosdor DATA MEMORY STACK entry points for DIRECT AND INDIR ADD
100. ROM operations include operations such as erase sector erase page program page CRC program security bit etc The Boot ROM occupies the program memory space at the top of the address space from FF00 to FFFFh thereby not conflicting with the user program memory space This function is in addition to the IAP Lite feature Power on reset code execution The P89LPC9321 contains two special Flash elements the BOOT VECTOR and the Boot Status Bit Following reset the P89LPC9321 examines the contents of the Boot Status Bit If the Boot Status Bit is set to zero power up execution starts at location 0000H which is the normal start address of the user s application code When the Boot Status Bit is set to one the contents of the Boot Vector is used as the high byte of the execution address and the low byte is set to OOH NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 117 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual The factory default settings for this device is shown in Table 107 below The factory pre programmed boot loader can be erased by the user Users who wish to use this loader should take cautions to avoid erasing the last 1 sector on the device Instead the page erase function can be used to erase the eight 64 byte pages located in this sector A custom boot loader can be written with the Boot Vector set to the custom boot loader if desired Table 107 Boot loader
101. START condition if the bus is free If the bus is not free it waits for a STOP condition which will free the bus and generates a START condition after a delay of a half clock period of the internal clock generator When the 12C interface is already in master mode and some data is transmitted or received it transmits a repeated START condition STA may be set at any time it may also be set when the 12C interface is an addressed slave mode STA 0 no START condition or repeated START condition will be generated 6 I2EN Interface Enable When set enables the I C interface When clear the 2 function is disabled 7 reserved I C Status register This is a read only register It contains the status code of the 2 interface The least three bits are always 0 There are 26 possible status codes When the code is F8H there is no relevant information available and SI bit is not set All other 25 status codes correspond to defined 2 states When any of these states entered the SI bit will be set Refer to Table 73 to Table 76 for details Table 68 12 Status register 125 address D9h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol STA 4 STA 3 STA 2 STA 1 STA 0 0 0 0 Reset 0 0 0 0 0 0 0 0 Table 69 12 Status register 125 address D9h bit description Bit Symbol Description 02 Reserved are always set to 0 3 7 STA 0 4 12 Status code I C SCL duty cycle registers I2SCLH and I2S
102. Slave 1 requires a 0 in bit 1 and bit 0 is ignored A unique address for Slave 0 would be 1100 0010 since slave 1 requires a in bit 1 A unique address for slave 1 would be 1100 0001 since 1 in bit O will exclude slave 0 Both slaves can be selected at the same time by an address which has bit 0 0 for slave 0 and bit 1 0 for slave 1 Thus both could be addressed with 1100 0000 In a more complex system the following could be used to select slaves 1 and 2 while excluding slave 0 Table 62 Slave 0 1 2 examples Example 1 Slave 0 SADDR SADEN Given UM10310_1 Example 2 Example 3 1100 0000 Slave1 SADDR 11100000 Slave 2 SADDR 1100 0000 1111 1001 SADEN 1111 1010 SADEN 1111 1100 1100 0 0 Given 1110 0X0X Given 1110 00XX In the above example the differentiation among the 3 slaves is in the lower 3 address bits Slave 0 requires that bit 0 0 and it can be uniquely addressed by 1110 0110 Slave 1 requires that bit 1 0 and it can be uniquely addressed by 1110 and 0101 Slave 2 requires that bit 2 0 and its unique address is 1110 0011 To select Slaves 0 and 1 and exclude Slave 2 use address 1110 0100 since it is necessary to make bit 2 1 to exclude slave 2 The Broadcast Address for each slave is created by taking the logical OR of SADDR SADEN Zeros in this result are treated as don t cares In most cases interpreting the don t cares as ones the broadcast address will be FF hexadecimal Upon N
103. TART condition or transmitting a repeated START condition when it is already in master mode The STO bit is STOP flag Setting this bit causes the 2 interface to transmit a STOP condition in master mode or recovering from an error condition in slave mode If the STA and STO are both set then a STOP condition is transmitted to the I2C bus if it is in master mode and transmits a START condition afterwards If it is in slave mode an internal STOP condition will be generated but it is not transmitted to the bus Table 66 12 Control register 12 address D8h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol I2EN STA STO SI AA CRSEL Reset x 0 0 0 0 0 x 0 Table 67 12 Control register 2 address D8h bit description Bit Symbol Description 0 CRSEL lt selection When set 1 Timer 1 overflow generates SCL when cleared 0 the internal SCL generator is used base on values of I2SCLH and I2SCLL 1 reserved 2 AA The Assert Acknowledge Flag When set to 1 an acknowledge low level to SDA will be returned during the acknowledge clock pulse on the SCL line on the following situations 1 The own slave address has been received 2 The general call address has been received while the general call bit GC in 2 is set 3 data byte has been received while the 12 interface is in the Master Receiver Mode 4 A data byte has been received while the 2 interface is in the ad
104. Table 78 SPI Control register SPCTL address E2h bit description Bit Symbol Description 0 SPRO SPI Clock Rate Select 1 SPR1 SPR1 SPRO 00 CCLKy 01 CCLK 10 11 28 2 SPI Clock PHAse select see Figure 42 to Figure 45 1 Data is driven on the leading edge of SPICLK and is sampled on the trailing edge 0 Data is driven when SS is low SSIG 0 and changes on the trailing edge of SPICLK and is sampled on the leading edge Note If SSIG 1 the operation is not defined 3 CPOL SPI Clock POLarity see Figure 42 to Figure 45 1 SPICLK is high when idle The leading edge of SPICLK is the falling edge and the trailing edge is the rising edge 0 SPICLK is low when idle The leading edge of SPICLK is the rising edge and the trailing edge is the falling edge MSTR Master Slave mode Select see Table 82 DORD SPI Data ORDer 1 The LSB of the data word is transmitted first 0 The MSB of the data word is transmitted first 6 SPEN SPI Enable 1 The SPI is enabled 0 The SPI is disabled and all SPI pins will be port pins 7 5900 85 10 1 MSTR bit 4 decides whether the device is a master or slave 0 The SS pin decides whether the device is master or slave The SS pin can be used as a port pin see Table 82 Table 79 SPI Status register SPSTAT address Eth bit allocation Bit 7 6 5 4 3 2 1 0 Symbol SPIF WCOL
105. Tx and Rx and RI 0023h ES ESR 0 4 IPOH 4 IPO 4 13 No Serial port Rx RI Brownout detect BOIF 002Bh EBO IENO 5 5 IP0 5 2 Yes Watchdog timer Real time WDOVF RTCF 0053h EWDRT IENO 6 IPOH 6 IPO 6 3 Yes clock 12C interrupt SI 0033h 2 1 0 0 IPO 0 5 No KBI interrupt KBIF 003Bh EKBI IEN1 1 0 IP0 0 8 1 2 CMF1 CMF2 0043h EC IEN1 2 0 IP0 0 11 interrupts SPI interrupt SPIF 004Bh ESPI IEN1 3 IP1H 3 IP1 3 14 No Capture Compare Unit 005Bh ECCU IEN1 4 IP1H 4 IP1 4 6 No Serial port Tx TI 006Bh EST IEN1 6 IPO 0O 12 No Data EEPROM write 0073h EAD IEN1 7 IP1H 7 IP1 7 15 lowest complete UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 27 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual IEO EX0 IE1 EX1 BOIF EBO RTCF gt KBIF ERTC EKBI RTCCON 1 J gt WDOVF wake up if in power down EWDRT CMF2 CMF1 EC EA IEO 7 TFO ETO 1 1 amp RI RI ES ESR D 5 S 12 EI2C SPIF ESPI any CCU interrupt ECCU EEIF EIEE Fig9 Interrupt sources interrupt enables and power down wake up sources interrupt to CPU 002aae 160 4 ports The P89LPC9321 has four I O ports Port 0 Port 1 Port 2 and Port 3
106. U This unit features A 16 bit timer with 16 bit reload on overflow Selectable clock CCUCLK with prescaler to divide the clock source by any integer between 1 and 1024 Four Compare PWM outputs with selectable polarity e Symmetrical Asymmetrical PWM selection Seven interrupts with common interrupt vector one Overflow 2xCapture 4xCompare safe 16 bit read write via shadow registers Two Capture inputs with event counter and digital noise rejection filter 9 1 CCU Clock CCUCLK The CCU runs on the CCUCLK which can be either PCLK in basic timer mode or the output of a PLL see Figure 21 The PLL is designed to use a clock source between 0 5 MHz to 1 MHz that is multiplied by 32 to produce a CCUCLK between 16 MHz and 32 MHz in PWM mode asymmetrical or symmetrical The PLL contains a 4 bit divider PLLDV3 0 bits in the TCR21 register to help divide PCLK into a frequency between 0 5 MHz and 1 MHz 9 2 CCU Clock prescaling This CCUCLK can further be divided down by a prescaler The prescaler is implemented as a 10 bit free running counter with programmable reload at overflow Writing a value to the prescaler will cause the prescaler to restart UM10310_1 NXP 2008 All rights reserved User manual Rev 01 1 December 2008 47 of 139 NXP Semiconductors UM10310 P89LPC9321 User manual 16 BIT SHADOW REGISTER TOR2H TO TOR2L 16 BIT COMPARE VALUE TIMER gt COMPARE
107. WDTE WDSE FUNCTION 0 x The watchdog reset is disabled The timer can be used as an internal timer and can be used to generate an interrupt WDSE has no effect 1 0 The watchdog reset is enabled The user can set WDCLK to choose the clock source 1 1 The watchdog reset is enabled along with additional safety features 1 WDCLK is forced to 1 using watchdog oscillator 2 WDCON and WDL register can only be written once 3 WDRUN is forced to 1 Watchdog oscillator external crystal oscillator Watchdog clock after a Watchdog feed sequence r pov TO WATCHDOG XTALWD DOWN COUNTER after one prescaler nen del PRE2 010 011 PRE1 DECODE 100 E 101 PREO 110 111 002 092 Fig 49 Watchdog Prescaler UM10310_1 15 2 Feed sequence The watchdog timer control register and the 8 bit down counter See Figure 50 are not directly loaded by the user The user writes to the WDCON and the WDL SFRs At the end of a feed sequence the values in the WDCON and WDL SFRs are loaded to the control register and the 8 bit down counter Before the feed sequence any new values written to these two SFRs will not take effect To avoid a watchdog reset the watchdog timer needs to be fed via a special sequence of software action called the feed sequence prior to reaching an underflow NXP B V 2008 All righ
108. XP B V 2008 All rights reserved User manual Rev 01 1 December 2008 69 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual reset SADDR and SADEN are loaded with Os This produces a given address of all don t cares as well as a Broadcast address of all don t cares This effectively disables the Automatic Addressing mode and allows the microcontroller to use standard UART drivers which do not make use of this feature 11 12C interface The I C bus uses two wires serial clock SCL and serial data SDA to transfer information between devices connected to the bus and has the following features Bidirectional data transfer between masters and slaves Multimaster bus no central master Arbitration between simultaneously transmitting masters without corruption of serial data on the bus Serial clock synchronization allows devices with different bit rates to communicate via one serial bus Serial clock synchronization can be used as a handshake mechanism to suspend and resume serial transfer I C bus be used for test and diagnostic purposes A typical 12 configuration is shown in Figure 31 Depending on the state of the direction bit R W two types of data transfers are possible on the I C bus Data transfer from a master transmitter to a slave receiver The first byte transmitted by the master is the slave address Next follows a number of data bytes The slave returns
109. a A8 1 2 F2 to F3 MOVX QDPTR A Move A to external data A16 1 2 FO PUSH dir Push direct byte onto stack 2 2 CO POP dir Pop direct byte from stack 2 2 DO A Rn Exchange and register 1 1 C8 to CF A dir Exchange A and direct byte 2 1 C5 XCH A Ri Exchange A and indirect memory 1 1 C6 to C7 UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 132 of 139 NXP Semiconductors UM10310 P89LPC9321 User manual Table 123 Instruction set summary continued Mnemonic Description Bytes Cycles Hex code XCHD A Ri Exchange A and indirect memory nibble 1 1 D6 to D7 BOOLEAN Mnemonic Description Bytes Cycles Hex code CLR C Clear carry 1 1 C3 CLR bit Clear direct bit 2 1 C2 SETBC Set carry 1 1 03 SETB bit Set direct bit 2 1 D2 CPLC Complement carry 1 1 B3 CPL bit Complement direct bit 2 1 B2 ANL C bit AND direct bit to carry 2 2 82 ANL C bit AND direct bit inverse to carry 2 2 BO ORL C bit OR direct bit to carry 2 2 72 ORL C bit OR direct bit inverse to carry 2 2 AO MOV Move direct bit to carry 2 1 A2 MOV bit C Move carry to direct bit 2 2 92 BRANCHING ACALL addr 11 Absolute jump to subroutine 2 2 116 1 LCALL addr 16 Long jump to subroutine 3 2 12 RET Return from subroutine 1 2 22 RETI Return from interrupt 1 2 32 AJMP addr 11 Absolute jump unconditional 2 2 016E1 LUMP addr 16 Long jump unconditional 3 2 02 SJMP rel Short jump relative address
110. address and default Boot vector Product P89LPC9321 Flash size End Signature bytes Sector Page Pre programmed Default Boot address Mfg id Id 1 1 2 size size serial loader vector 8kBx8 1FFFh 15h DDh 2Fh 1kBx8 64 8 1EO00hto 1FFFh 1Fh UM10310 1 18 9 Hardware activation of Boot Loader 18 10 The boot loader can also be executed by forcing the device into ISP mode during a power on sequence see Figure 52 This is accomplished by powering up the device with the reset pin initially held low and holding the pin low for a fixed time after Vpp rises to its normal operating value This is followed by three and only three properly timed low going pulses Fewer or more than three pulses will result in the device not entering ISP mode Timing specifications may be found in the data sheet for this device This has the same effect as having a non zero status bit This allows an application to be built that will normally execute the user code but can be manually forced into ISP operation If the factory default setting for the Boot Vector is changed it will no longer point to the factory pre programmed ISP boot loader code If this happens the only way it is possible to change the contents of the Boot Vector is through the parallel or ICP programming method provided that the end user application does not contain a customized loader that provides for erasing and reprogramming of the Boot Vector and Boot Status Bit After programming the
111. alue to adjust the oscillator frequency to 7 373 MHz 1 96 at room temperature Note the initial value is better than 1 96 please refer to the P89LPC9321 data sheet for behavior over temperature End user applications can write to the TRIM register to adjust the on chip RC oscillator to other frequencies Increasing the TRIM value will decrease the oscillator frequency When the clock doubler option is enabled UCFG2 7 1 the output frequency is doubled If CCLK is 8 MHz or slower the CLKLP SFR bit AUXR1 7 can be set to logic 1 to reduce power consumption On reset CLKLP is logic 0 allowing highest performance access This bit can then be set in software if CCLK is running at 8 MHz or slower When clock doubler option is enabled BOE1 bit UCFG1 5 and BOEO bit UCFG1 3 are required to hold the device in reset at power up until Vpp has reached its specified level Table 5 On chip RC oscillator trim register TRIM address 96h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol RCCLK ENCLK TRIM 5 TRIM 4 TRIM 3 TRIM 2 TRIM 1 TRIM O Reset 0 0 Bits 5 0 loaded with factory stored value during reset UM10310_1 NXP 2008 All rights reserved User manual Rev 01 1 December 2008 22 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 6 On chip RC oscillator trim register TRIM address 96h bit description Bit Symbol Description 0 TRIM O Trim value Determines
112. ansmitter mode 75 Format of Master Receiver mode 76 A Master Receiver switches to Master Transmitter after sending Repeated Start 76 Format of Slave Receiver mode 77 Format of Slave Transmitter mode 77 2 serial interface block diagram 78 SPI block diagram 85 SPI single master single slave configuration 87 SPI dual device configuration where either can be a master slave 87 SPI single master multiple slaves configuration 88 SPI slave transfer format with 0 91 SPI slave transfer format with 1 92 SPI master transfer format with CPHA 0 93 SPI master transfer format with 1 94 Comparator input and output connections 96 Comparator configurations Suppose PGA1 is disabled or gain 1 97 Fig 48 Fig 49 Fig 50 Fig 51 Fig 52 PGA1 block 98 Watchdog lt 102 Watchdog Timer in Watchdog Mode eR RR RR 106 Watchdog Timer Timer Mode WDTE 0 107 Forcing ISP mode 118 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 137 of 139 NXP Semiconductors UM10310 23 Contents P89LPC9321 User manual 1 Introduction
113. arallel programming modes This bit is cleared by writing the Clear Configuration Protection CCP command in either ICP or parallel programming modes IAP error status It is not possible to use the Flash memory as the source of program instructions while programming or erasing this same Flash memory During an IAP erase program or CRC the CPU enters a program idle state The CPU will remain in this program idle state until the erase program or CRC cycle is completed These cycles are self timed When the cycle is completed code execution resumes If an interrupt occurs during an erase programming or CRC cycle the erase programming or CRC cycle will be aborted so that the Flash memory can be used as the source of instructions to service the interrupt An IAP error condition will be flagged by setting the carry flag and status information returned The status information returned is shown in Table 109 If the application permits interrupts during erasing programming or CRC cycles the user code should check the carry flag after each erase programming or CRC operation to see if an error occurred If the operation was aborted the user s code will need to repeat the operation NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 123 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 109 IAP error status Bit Flag Description 0 Ol Operation Interrupted Indicates that an operat
114. ata retention 18 3 Flash programming and erase The P89LPC9321 program memory consists 1 kB sectors Each sector can be further divided into 64 byte pages In addition to sector erase and page erase a 64 byte page register is included which allows from 1 to 64 bytes of a given page to be programmed at the same time substantially reducing overall programming time Five methods of programming this device are available Parallel programming with industry standard commercial programmers In Circuit serial Programming ICP with industry standard commercial programmers AP Lite allows individual and multiple bytes of code memory to be used for data storage and programmed under control of the end application Internal fixed boot ROM containing low level In Application Programming IAP routines that can be called from the end application in addition to IAP Lite Afactory provided default serial loader located in upper end of user program memory providing In System Programming ISP via the serial port Note Flash erase program will be blocked if BOD FLASH is detected Vpp 2 4 V 18 4 Using Flash as data storage IAP Lite The Flash code memory array of this device supports IAP Lite in addition to standard IAP functions Any byte in a non secured sector of the code memory array may be read using the MOVC instruction and thus is suitable for use as non volatile data storage IAP Lite provides an erase program function that ma
115. attern via polling or interrupt 1 Write to DEECON with ECTL1 ECTLO DEECON 5 4 10 and EWERR1 EWERRO DEECON 2 1 00 and correct bit 8 address to EADRS Note that if the correct values are already written to DEECON there is no need to write to this register 2 Write the fill pattern to the DEEDAT register Note that if the correct values are already written to DEEDAT there is no need to write to this register 3 Write address bits 7 to 0 to DEEADR Note that address bits 5 to 0 are ignored 4 Poll EWERR flag If EWERR1 DEECON 2 bit is logic 1 BOD EEPROM occurred Vpp 2 4V and Data EEPROM program is blocked NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 111 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual 5 If both the EIEE IEN1 7 bit and the EA IENO 7 bit are logic 1s wait for the Data EEPROM interrupt then read poll the EEIF DEECON 7 bit until it is set to logic 1 If EIEE or EA is logic 0 the interrupt is disabled and only polling is enabled When EEIF is logic 1 the operation is complete and row is filled with the DEEDAT pattern Poll EWERRO flag If EWERRO DEECON 1 bit is logic 1 it means BOD EEPROM occurred Vpp lt 2 4V during program or erase and the previous operation may not be correct 17 7 Data EEPROM Block Fill The Data EEPROM array can be filled with a predetermined data pattern via polling or interrupt 1 Wr
116. bit must be cleared before the data transfer can continue When the slave address and data direction bit have been transmitted and an acknowledge bit has been received the SI bit is set and the Status Register will show the status code For master mode the possible status codes are 40H 48H or 38H For slave mode the possible status codes are 68H 78H or BOH Refer to Table 75 for details UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 75 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Eee 8T logic 0 write data transferred logic 1 read n Bytes acknowledge A acknowledge SDA LOW from Master to Slave A not acknowledge SDA HIGH from Slave to Master S START condition 002 930 Fig 33 Format of Master Receiver mode After a repeated START condition 12 may switch to the Master Transmitter Mode Pasa a Tov 8 om logic 0 write L data transferred _ logic 1 read Bytes acknowledge A acknowledge SDA LOW from Master to Slave A not acknowledge SDA HIGH from Slave to Master S START condition STOP condition SLA slave address RS repeat START condition 002aaa931 Fig 34 A Master Receiver switches to Master Transmitter after sending Repeated Start 11 6 3 Slave Receiver mode In the Slave Receiver Mode data bytes are received from a master t
117. by the RPE bit Only a power on reset will temporarily override the selection defined by RPE bit Other sources of reset will not override the RPE bit Note During a power cycle Vpp must fall below Vpop see P89LPC9321 data sheet Static characteristics before power is reapplied in order to ensure a power on reset Reset can be triggered from the following sources External reset pin during power on or if user configured via UCFG1 Power on detect Brownout detect Watchdog timer Software reset UART break character detect reset For every reset source there is a flag in the Reset Register RSTSRC The user can read this register to determine the most recent reset source These flag bits can be cleared in software by writing a 0 to the corresponding bit More than one flag bit may be set During a power on reset both POF and BOF are set but the other flag bits are cleared A watchdog reset is similar to a power on reset both POF and BOF are set but the other flag bits are cleared For any other reset previously set flag bits that have not been cleared will remain set UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 37 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual RPE UCFG1 6 4 WDTE UCFG1 7 watchdog timer reset 0 Software reset SRST AUXR1 3 gt chip reset power on detect
118. ce the prescaler starts counting immediately after a feed switching clocks can cause some inaccuracy in the prescaler count The inaccuracy could be as much as 2 old clock source counts plus 2 new clock cycles Note When switching clocks it is important that the old clock source is left enabled for two clock cycles after the feed completes Otherwise the watchdog may become disabled when the old clock source is disabled For example suppose PCLK WCLK 0 is the current clock source After WCLK is set to logic 1 the program should wait at least two PCLK cycles 4 CCLKs after the feed completes before going into Power down mode Otherwise the watchdog could become disabled when CCLK turns off The watchdog oscillator will never become selected as the clock source unless CCLK is turned on again first NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 105 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual MOV WFEED1 0A5H 2 MOV WFEED2 05AH Watchdog PRESCALER Lo 8 BIT DOWN raset oscillator COUNTER A A A M crystal oscillator T T 1 T SHADOW REGISTER XTALWD A A ADL pace reer Tree T _ worun woror woo 002 093 WDCON A7H Fig 50 Watchdog Timer in Watchdog Mode WDTE 1 15 4 Watchdog Timer in Timer mode Figure 51 shows the Watchdog Timer in Time
119. cle will be aborted and the OI flag Operation Interrupted in FMCON will be set If the application permits interrupts during erasing programming the user code should check the OI flag FMCON 0 after each erase programming operation to see if the operation was aborted If the operation was aborted the user s code will need to repeat the process starting with loading the page register The erase program cycle takes 4 ms 2 ms for erase 2 ms for programming to complete regardless of the number of bytes that were loaded into the page register Erasing programming of a single byte or multiple bytes in code memory is accomplished using the following steps Write the LOAD command 00H to The LOAD command will clear all locations in the page register and their corresponding update flags Write the address within the page register to FMADRL Since the loading the page register uses FMADRL 5 0 and since the erase program command uses FMADRH and FMADRL T7 6 the user can write the byte location within the page register FMADRL 5 0 and the code memory page address FMADRH and FMADRL 7 6 at this time Write the data to be programmed to FMDATA This will increment FMADRL pointing to the next byte in the page register Write the address of the next byte to be programmed to FMADRL if desired Not needed for contiguous bytes since FMADRL is auto incremented All bytes to be programmed must be within the same page NXP B
120. cription 0 CMFn Comparator interrupt flag This bit is set by hardware whenever the comparator output COn changes state This bit will cause a hardware interrupt if enabled Cleared by software COn Comparator output synchronized to the CPU clock to allow reading by software 2 Output enable When logic 1 the comparator output is connected to the CMPn pin if the comparator is enabled CEn 1 This output is asynchronous to the CPU clock 3 ONn Comparator negative input select When logic 0 the comparator reference pin CMPREF is selected as the negative comparator input When logic 1 the internal comparator reference Vref is selected as the negative comparator input 4 Comparator positive input select When logic 0 CINnA is selected as the positive comparator input When logic 1 CINnB is selected as the positive comparator input 5 Comparator enable When set the corresponding comparator function is enabled Comparator output is stable 10 microseconds after CEn is set 6 7 reserved NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 95 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual 4 CIN1A comparator 1 0 3 0 2 2 0 1 CIN2B Fig 46 Comparator input and output connections OE1 p oet 1 P0 6 P0 5 CMPREF 2 change detect Vref bg CN1
121. d TI RI CIDIS 0 When cleared 0 FE BR OE cannot cause an interrupt Note FE BR or OE is often accompanied by a RI which will generate an interrupt regardless of the state of STINT Note that BR can cause a break detect reset if EBRR AUXR1 6 is set to logic 1 1 OE Overrun Error flag is set if a new character is received in the receiver buffer while it is still full before the software has read the previous character from the buffer i e when bit 8 of a new byte is received while RI in SCON is still set Cleared by software 2 Break Detect A break is detected when 11 consecutive bits are sensed low Cleared by software 3 FE Framing error flag is set when the receiver fails to see a valid STOP bit at the end of the frame Cleared by software 4 DBISEL Double buffering transmit interrupt select Used only if double buffering is enabled This bit controls the number of interrupts that can occur when double buffering is enabled When set one transmit interrupt is generated after each character written to SBUF and there is also one more transmit interrupt generated at the beginning INTLO 0 or the end INTLO 1 of the STOP bit of the last character sent i e no more data in buffer This last interrupt can be used to indicate that all transmit operations are over When cleared 0 only one transmit interrupt is generated per character written to SBUF Must be logic 0 when double buffering is disabled
122. ddress OxFF short pgm mtp void OxFF00 set pointer to IAP entry point key 0x96 set the authorization key pgm mtp execute the IAP function call After the function call is processed by the IAP routine the authorization key will be cleared Thus it is necessary for the authorization key to be set prior to EACH call to PGM MTP that requires a key If an IAP routine that requires an authorization key is called without a valid authorization key present the MCU will perform a reset Flash write enable This device has hardware write enable protection This protection applies to both ISP and IAP modes and applies to both the user code memory space and the user configuration bytes UCFG1 UCFG2 BOOTVEC and BOOTSTAT This protection does not apply to ICP or parallel programmer modes If the Activate Write Enable AWE bit in BOOTSTAT 7 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 122 of 139 NXP Semiconductors UM1 031 0 UM10310_1 18 15 18 16 P89LPC9321 User manual is a logic 0 an internal Write Enable WE flag is forced set and writes to the flash memory and configuration bytes are enabled If the Active Write Enable AWE bit is a logic 1 then the state of the internal WE flag can be controlled by the user The WE flag is SET by writing the Set Write Enable 08H command to FMCON followed by a key value 96H to FMDATA FMCON 0x08 FMDATA 0x96
123. de 1 SM2 must be 0 6 SMi With SMO defines the serial port mode see Table 57 7 SMO FE The use of this bit is determined by SMODO in the PCON register If SMODO 0 this bit is read and written as SMO which with SM1 defines the serial port mode If SMOD O 1 this bit is read and written as FE Framing Error FE is set by the receiver when an invalid stop bit is detected Once set this bit cannot be cleared by valid frames but is cleared by software Note UART mode bits SMO and SM1 should be programmed when SMODO is logic 0 default mode on any reset Table 57 Serial Port modes SMO 5 1 00 01 10 11 UART mode UART baud rate Mode 0 shift register CCLK 6 default mode on any reset Mode 1 8 bit UART Variable see Table 52 Mode 2 9 bit UART CCLK or CCLK 6 Mode 3 9 bit UART Variable see Table 52 Table 58 Serial Port Status register SSTAT address BAh bit allocation Bit 7 6 5 4 3 2 1 0 Symbol DBMOD INTLO CIDIS DBISEL FE BR OE STINT Reset x 0 0 B V 2008 All rights reserved User manual Rev 01 1 December 2008 62 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 59 Serial Port Status register SSTAT address BAh bit description Bit Symbol Description 0 STINT Status Interrupt Enable When set 1 FE BR OE can cause an interrupt The interrupt used vector address 0023h is shared with RI CIDIS 1 or the combine
124. de memory space accessed as part of program execution and via the MOVC instruction The P89LPC9321 has 8 of on chip Code memory The P89LPC9321 also has 512 bytes of on chip Data EEPROM that is accessed via SFRs see Section Section 17 Data EEPROM NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 20 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 4 Data RAM arrangement Type Data RAM Size bytes DATA Directly and indirectly addressable memory 128 IDATA Indirectly addressable memory 256 XDATA Auxiliary External Data on chip memory that is accessed using 512 the MOVX instructions 2 Clocks 2 1 Enhanced CPU The P89LPC9321 uses an enhanced 80C51 CPU which runs at six times the speed of standard 80C51 devices A machine cycle consists of two CPU clock cycles and most instructions execute in one or two machine cycles 2 2 Clock definitions The P89LPC9321 device has several internal clocks as defined below OSCCLK Input to the DIVM clock divider OSCCLK is selected from one of four clock Sources and can also be optionally divided to a slower frequency see Figure 8 and Section 2 10 CPU Clock CCLK modification DIVM register Note fosc is defined as the OSCCLK frequency CCLK CPU clock output of the DIVM clock divider There are two CCLK cycles per machine cycle and most instructions are executed in one to two machine cycles t
125. ded to the shift register and a Tx interrupt is generated immediately 4 If there is more data to 6 else continue 5 If there is no more data then f DBISEL is logic 0 no more interrupts will occur NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 66 of 139 NXP Semiconductors UM10310 If P89LPC9321 User manual If DBISEL is logic 1 and INTLO is logic 0 a Tx interrupt will occur at the beginning of the STOP bit of the data currently in the shifter which is also the last data If DBISEL is logic 1 and INTLO is logic 1 a Tx interrupt will occur at the end of the STOP bit of the data currently in the shifter which is also the last data Note that if DBISEL is logic 1 and the CPU is writing to SBUF when the STOP bit of the last data is shifted out there can be an uncertainty of whether a Tx interrupt is generated already with the UART not knowing whether there is any more data following there is more data the CPU writes to SBUF again Then If INTLO is logic 0 the new data will be loaded and a Tx interrupt will occur at the beginning of the STOP bit of the data currently in the shifter If INTLO is logic 1 the new data will be loaded and a Tx interrupt will occur at the end of the STOP bit of the data currently in the shifter Go to 3 write to SBUF TX interrupt TXD write to SBUF TX interrupt TXD write to SBUF TX interrupt
126. defined 111 0 00 External clock input External clock input 01 DIVM 10 11 External clock input DIVM 1 00 External clock input Internal RC oscillator 01 10 11 Internal RC oscillator Table 31 Real time Clock Control register RTCCON address D1h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol RTCS1 RTCSO ERTC RTCEN Reset 0 1 1 x x x 0 0 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 46 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 32 Real time Clock Control register RTCCON address Dth bit description Bit Symbol Description 0 RTCEN Real time Clock enable The Real time Clock will be enabled if this bit is logic 1 Note that this bit will not power down the Real time Clock The RTCPD bit PCONA 7 if set will power down and disable this block regardless of RTCEN 1 ERTC Real time Clock interrupt enable The Real time Clock shares the same interrupt as the watchdog timer Note that if the user configuration bit WDTE UCFG1 7 is logic 0 the watchdog timer can be enabled to generate an interrupt Users can read the RTCF RTCCON 7 bit to determine whether the Real time Clock caused the interrupt reserved RTCSO Real time Clock source select see Table 30 RTCS1 RTCF Real time Clock Flag This bit is set to logic 1 when the 23 bit Real time Clock reaches a count of logic 0 It can be cleared in software 9 Capture Compare Unit CC
127. description Bit Symbol Description 0 TPCR2H 0 Prescaler bit 8 1 TPCR2H 1 Prescaler bit 9 Table 35 CCU prescaler control register low byte TPCR2L address CAh bit allocation Bit 7 6 5 4 3 2 1 0 Symbol TPCR2L 7 TPCR2L6 TPCR2L5 TPCR2L 4 TPCR2L3 TPCR2L2 TPCR2L1 TPCR2L 0 Reset 0 0 0 0 0 0 0 0 Table 36 CCU prescaler control register low byte TPCR2L address bit description Bit Symbol Description 0 TPCR2L 0 Prescaler bit 0 1 TPCR2L 1 Prescaler bit 1 2 TPCR2L 2 Prescaler bit 2 3 TPCR2L 3 Prescaler bit 3 4 TPCR2L 4 Prescaler bit 4 UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 49 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 36 CCU prescaler control register low byte TPCR2L address CAh bit description Bit Symbol Description 5 TPCR2L 5 Prescaler bit 5 TPCR2L 6 Prescaler bit 6 TPCR2L 7 Prescaler bit 7 Table 37 CCU control register 0 TCR20 address C8h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol PLLEN HLTRN HLTEN ALTCD ALTAB TDIR2 TMOD21 TMOD20 Reset 0 0 0 0 0 0 0 0 Table 38 CCU control register 0 TCR20 address C8h bit description Bit Symbol 1 2 TMOD20 21 Description CCU Timer mode TMOD21 TMOD20 00 Timer is stopped 01 Basic timer function 10 Asymmetrical PWM uses PLL as clock source 11 Symmetrical PWM uses PLL as clock source Count direction of the CCU Time
128. dressed Slave Receiver Mode When cleared to 0 an not acknowledge high level to SDA will be returned during the acknowledge clock pulse on the SCL line on the following situations 1 A data byte has been received while the 2 interface is in the Master Receiver Mode 2 A data byte has been received while the 12C interface is in the addressed Slave Receiver Mode UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 72 of 139 NXP Semiconductors UM1 031 0 UM10310 1 11 5 P89LPC9321 User manual Table 67 12 Control register 12 address D8h bit description continued Bit Symbol Description 3 SI 2 Interrupt Flag This bit is set when one of the 25 possible 2 states is entered When EA bit and EI2C IEN1 0 bit are both set an interrupt is requested when SI is set Must be cleared by software by writing O to this bit 4 STO STOP Flag STO 1 In master mode a STOP condition is transmitted to the I2C bus When the bus detects the STOP condition it will clear STO bit automatically In slave mode setting this bit can recover from an error condition In this case no STOP condition is transmitted to the bus The hardware behaves as if a STOP condition has been received and it switches to not addressed Slave Receiver Mode The STO flag is cleared by hardware automatically 5 STA Start Flag STA 1 2 enters master mode checks the bus and generates
129. e names and trademarks are the property of their respective owners 12 logo is a trademark of NXP B V NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 134 of 139 NXP Semiconductors UM10310 P89LPC9321 User manual 21 Tables Table 1 Pin description 5 Table 36 CCU prescaler control register low byte TPCR2L Table 2 Special function registers 11 address bit description 49 Table 3 Extended special function registers 19 Table 37 CCU control register 0 TCR20 address C8h bit Table 4 Data RAM arrangement 21 allocation 50 Table 5 On chip RC oscillator trim register TRIM Table 38 CCU control register 0 TCR20 address C8h bit address 96h bit allocation 22 descriptions ice wide DR 50 Table 6 On chip RC oscillator trim register TRIM Table 39 Capture compare control register CCRx address 96h bit description 23 address Exh bit allocation 51 Table 7 Clock control register address Table 40 Capture compare control register CCRx FFDEh bit allocation 24 address Exh bit description 51 Table 8 Clock control register address Table 41 Event delay counter for input capture 52 FFDEh bit description
130. e will be transmitted I2DAT 1 ACK bit will be received transmitted ACK has been I2DAT action 1 0 0 Repeated START will be received or transmitted no I2DAT action 0 1 0 STOP condition will be or transmitted STO flag will be reset nol2DAT action 1 1 0 STOP condition followed by a START condition will be transmitted STO flag will be reset 38H Arbitration lostin I2DAT action 0 0 0 2 will be released not SLA R W or data addressed slave will be bytes entered l2DAT action 1 0 0 A START condition will be transmitted when the bus becomes free Table 74 Master Receiver mode Status code Status of the IPC Application software response Next action taken by hardware 125 hardware to from I2DAT I2CON STA STO STA 08H A START Load SLA R x 0 0 x SLA R will be transmitted ACK bit condition has will be received been transmitted 10H A repeat START Load SLA R or X 0 0 X As above condition has Load SLA W SLA W will be transmitted 2C bus been transmitted will be switched to Master Transmitter Mode 38H Arbitration lostin no I2DAT action 0 0 0 x 2 will be released it will enter NOT ACK bit Or a slave mode no I2DAT action 1 0 0 START condition will be transmitted when the bus becomes free 40h SLA R has been nol2DAT action 0 0 0 0 Data byte will be received NOT ACK transmitted ACK or bit will be returned has been received no jopAT action 0 0 1 Databyte will be received ACK bit
131. eck the MSTR bit If this bit is cleared by a slave select and the user wants to continue to use the SPI as a master the user must set the MSTR bit again otherwise it will stay in slave mode Write collision The SPI is single buffered in the transmit direction and double buffered in the receive direction New data for transmission can not be written to the shift register until the previous transaction is complete The WCOL SPSTAT 6 bit is set to indicate data collision when the data register is written during transmission In this case the data currently being transmitted will continue to be transmitted but the new data i e the one causing the collision will be lost While write collision is detected for both a master or a slave it is uncommon for a master because the master has full control of the transfer in progress The slave however has no control over when the master will initiate a transfer and therefore collision can occur For receiving data received data is transferred into a parallel read data buffer so that the shift register is free to accept a second character However the received character must be read from the Data Register before the next character has been completely shifted in Otherwise the previous data is lost WCOL can be cleared in software by writing a logic 1 to the bit Data mode Clock Phase Bit CPHA allows the user to set the edges for sampling and changing data The Clock Polarity bit CPOL all
132. ect is the same as setting TR1 0 Timer 0 in Mode 3 establishes TLO and THO as two separate 8 bit counters The logic for Mode 3 on Timer 0 is shown in Figure 18 TLO uses the Timer 0 control bits TOC T TOGATE TRO INTO and TFO THO is locked into a timer function counting machine cycles and takes over the use of TR1 and TF1 from Timer 1 Thus THO now controls the Timer 1 interrupt Mode 3 is provided for applications that require an extra 8 bit timer With Timer 0 in Mode 3 an P89LPC9321 device can look like it has three Timer Counters Note When Timer 0 is in Mode 3 Timer 1 can be turned on and off by switching it into and out of its own Mode 3 It can still be used by the serial port as a baud rate generator or in any application not requiring an interrupt 7 5 Mode6 In this mode the corresponding timer can be changed to a PWM with a full period of 256 timer clocks see Figure 19 Its structure is similar to mode 2 except that e TFn n 0 and 1 for Timers 0 and 1 respectively is set and cleared in hardware The low period of the TFn is in THn and should be between 1 and 254 The high period of the TFn is always 256 Loading THn with 00h will force the Tx pin high loading THn with FFh will force the Tx pin low Note that interrupt can still be enabled on the low to high transition of TFn and that TFn can still be cleared in software like in any other modes Table 28 Timer Counter Control re
133. ed when the bus becomes free nol2DAT action 1 0 0 1 Switched to not addressed SLA mode Own slave address will be recognized General call address will be recognized if IBADR 0O 1 A START condition will be transmitted when the bus becomes free Table 76 Slave Transmitter mode Status code Status of the IPC Application software response Next action taken by 125 hardware to from IIDAT 1012 hardware STA STO AA A8h Own SLA R has Load data byte x 0 0 0 Last data byte will be transmitted been received and ACK bit will be received ACK has been load data byte x 0 0 1 Data byte will be transmitted ACK returned will be received Boh Arbitration lostin Load data byte or x 0 0 0 Last data byte will be transmitted SLA R W as and ACK bit will be received master Own load data byte x 0 0 1 Data byte will be transmitted ACK SLA R has been bit will be received received ACK has been returned B8H Data byte in Load data byte or x 0 0 0 Last data byte will be transmitted I2DAT has been and ACK bit will be received transmitted ACK load data byte x 0 0 1 Data byte will be transmitted ACK has been received will be received UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 83 of 139 NXP Semiconductors UM10310 Table 76 Slave Transmitter mode continued P89LPC9321 User manual Status code 125 C8H Status of the 2 hardware Data byte in I2DAT
134. es fill 11 Block fill 512 bytes 6 HVERR High voltage error Indicates a programming voltage error during program or erase 7 Data EEPROM interrupt flag Set when a read or write finishes reset by software Byte Mode In this mode data can be read and written to one byte at a time Data is in the DEEDAT register and the address is in the DEEADR register Each write requires approximately 4 ms to complete Each read requires three machines after writing the address to the DEEADR register NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 109 of 139 NXP Semiconductors UM1 031 0 UM10310_1 17 1 17 2 P89LPC9321 User manual Row Fill In this mode the addressed row 64 bytes with address DEEADR 5 0 ignored is filled with the DEEDAT pattern To erase the entire row to or program the entire row to FFh write 00 or FFh to DEEDAT prior to row fill Each row fill requires approximately 4 ms to complete Block Fill In this mode all 512 bytes are filled with the DEEDAT pattern To erase the block to 00h or program the block to FFh write 00h or FFh to DEEDAT prior to the block fill Prior to using this command EADR8 must be set 1 Each Block Fill requires approximately 4 ms to complete In any mode after the operation finishes the hardware will set EEIF bit An interrupt can be enabled via the IEN1 7 bit If IEN1 7 and the EA bits are set it will generate an interru
135. es from a logic 0 to a logic 1 When this occurs the strong pull up turns on for two CPU clocks quickly pulling the port pin high The quasi bidirectional port configuration is shown in Figure 10 Although the P89LPC9321 is a 3 V device most of the pins are 5 V tolerant If 5 V is applied to a pin configured in quasi bidirectional mode there will be a current flowing from the pin to Vpp causing extra power consumption Therefore applying 5 V to pins configured in quasi bidirectional mode is discouraged A quasi bidirectional port pin has a Schmitt triggered input that also has a glitch suppression circuit NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 29 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Please refer to the P89LPC9321 data sheet Dynamic characteristics for glitch filter specifications 2 CPU CLOCK DELAY a 8 FEN lt 3 port latch data input data 4 glitch rejection 002 914 Fig 10 Quasi bidirectional output 4 3 Open drain output configuration The open drain output configuration turns off all pull ups and only drives the pull down transistor of the port pin when the port latch contains a logic 0 To be used as a logic output a port configured in this manner must have an external pull up typically a resistor tied to Vpp The pull down for this mode
136. essable Name P1 P2 P3 POM1 POM2 1 1 1 2 2 1 2 2 1 2 PSW PTOAD RSTSRC RTCCON Description SFR addr Port 1 90H Bit address Port 2 AOH Bit address Port 3 BOH Port 0 output 84H mode 1 Port 0 output 85H mode 2 Port 1 output 91H mode 1 Port 1 output 92H mode 2 Port 2 output A4H mode 1 Port 2 output ASH mode 2 Port 3 output 1 Port 3 output B2H mode 2 Power control 87H register Power control B5H register A Bit address Program status DOH word Port 0 digital F6H input disable Reset source DFH register RTC control D1H Bit functions and addresses Reset value MSB LSB Hex Binary OCC OCB RST INT1 INTO SDA TO SCL RXD TXD 6 5 4 2 1 0 SPICLK 55 MISO MOSI OCD ICB B7 B6 B5 B4 B3 B2 1 BO XTAL1 XTAL2 POM1 7 POM1 6 0 1 5 POM1 4 POM1 3 POM1 2 1 1 0 1 0 1111 1111 POM2 7 0 2 6 0 2 5 POM2 4 0 2 3 POM2 2 POM2 1 0 2 0 0011 0000 0000 P1M1 7 1 1 6 1 1 4 1 1 3 1 1 2 P1M1 1 1 1 0 0301 11 1 xx11 P1M2 7 1 2 6 P1M2 4 P1M2 3 P1M2 2 P1M2 1 1 2 0 0011 00 0 xx00 P2M1 7 P2M1 6 2 1 5 P2M1 4 2 1 3 P2M1 2 P2M1 1 2 1 0 FFU 1111 1111 P2M2 7 2 2 6 P2M2 5 2 2 4 P2M2 3 P2M2 2 P2M2 1 P2M2 0 001 0000 0000 P3M
137. f SCON is accessed as the framing error status FE for the UART 7 SMOD1 Double Baud Rate bit for the serial port UART when Timer 1 is used as the baud rate source When logic 1 the Timer 1 overflow rate is supplied to the UART When logic 0 the Timer 1 overflow rate is divided by two before being supplied to the UART See Section 9 Table 20 Power Control register A PCONA address B5h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol RTCPD DEEPD VCPD I2PD SPPD SPD CCUPD Reset 0 0 0 0 0 0 0 0 Table 21 Power Control register A PCONA address B5h bit description Bit Symbol Description 0 CCUPD Compare Capture Unit CCU power down When logic 1 the internal clock to the CCU is disabled Note that in either Power down mode or Total Power down mode the CCU clock will be disabled regardless of this bit Note This bit is overridden by the CCUDIS bit in FCFG1 If CCUDIS 1 CCU is powered down 1 SPD Serial Port UART power down When logic 1 the internal clock to the UART is disabled Note that in either Power down mode or Total Power down mode the UART clock will be disabled regardless of this bit 2 SPPD SPI power down When logic 1 the internal clock to the SPI is disabled Note that in either Power down mode or Total Power down mode the SPI clock will be disabled regardless of this bit 3 I2PD 2 power down When logic 1 the internal clock to the 2 is disabled Note that in either Power down mode or Total Power dow
138. fering and several interrupt options The UART can be operated in 4 modes as described in the following sections Mode 0 Serial data enters and exits through RXD TXD outputs the shift clock 8 bits are transmitted or received LSB first The baud rate is fixed at 1 6 of the CPU clock frequency Mode 1 10 bits are transmitted through TXD or received through RXD a start bit logic 0 8 data bits LSB first and a stop bit logic 1 When data is received the stop bit is stored in RB8 in Special Function Register SCON The baud rate is variable and is determined by the Timer 1 overflow rate or the Baud Rate Generator see Section 10 6 Baud Rate generator and selection Mode 2 11 bits are transmitted through TXD or received through RXD start bit logic 0 8 data bits LSB first a programmable 9th data bit and a stop bit logic 1 When data is transmitted the 9th data bit TB8 in SCON can be assigned the value of 0 or 1 Or for example the parity bit P in the PSW could be moved into TB8 When data is received the 9th data bit goes into RB8 in Special Function Register SCON and the stop bit is not saved The baud rate is programmable to either 1 16 or 32 of the CCLK frequency as determined by the SMOD bit in PCON NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 59 of 139 NXP Semiconductors UM1 031 0 UM10310_1 10 4 10 5 10 6 10 7 P89LPC9321 User
139. gister TCON address 88h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol TF1 TR1 TFO TRO IE1 IT1 IEO ITO Reset 0 0 0 0 0 0 0 0 Table 29 Timer Counter Control register TCON address 88h bit description Bit Symbol Description 0 ITO Interrupt O Type control bit Set cleared by software to specify falling edge low level triggered external interrupts 1 IEO Interrupt O Edge flag Set by hardware when external interrupt 0 edge is detected Cleared by hardware when the interrupt is processed or by software 2 IT1 Interrupt 1 Type control bit Set cleared by software to specify falling edge low level triggered external interrupts UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 41 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 29 Timer Counter Control register TCON address 88h bit description continued Bit Symbol Description 3 IE1 Interrupt 1 Edge flag Set by hardware when external interrupt 1 edge is detected Cleared by hardware when the interrupt is processed or by software TRO Timer 0 Run control bit Set cleared by software to turn Timer Counter 0 on off TFO Timer 0 overflow flag Set by hardware on Timer Counter overflow Cleared by hardware when the processor vectors to the interrupt routine or by software except in mode 6 where it is cleared in hardware TR1 Timer 1 Run control bit Set cleared by software to turn Timer Counter 1 on off T
140. h that of OCRxH OCRxL the Timer Output Compare Interrupt Flag TOCFx is set in TIFR2 This happens in the CCUCLK cycle after the compare takes place If EA and the Timer Output Compare Interrupt Enable bit TOCIE2x in TICR2 register as well as ECCU bit in IEN1 are all set the program counter will be vectored to the corresponding interrupt The user must manually clear the bit by writing a logic 0 to it Two bits in OCCRx the Output Compare x Mode bits OCMx1 and OCMx0 select what action is taken when a compare match occurs Enabled compare actions take place even if the interrupt is disabled NXP B V 2008 All rights reserved 2 TDIR2 3 ALTAB 4 ALTCD 5 HLTEN 6 HLTRN 7 PLLEN UM10310 1 User manual Rev 01 1 December 2008 50 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual In order for a Compare Output Action to occur the compare values must be within the counting range of the CCU timer When the compare channel is enabled the I O pin which must be configured as an output will be connected to an internal latch controlled by the compare logic The value of this latch is zero from reset and can be changed by invoking a forced compare A forced compare is generated by writing a logic 1 to the Force Compare x Output bit FCOx bit in OCCRx Writing a one to this bit generates a transition on the corresponding I O pin as set up by OCMx1 OCMx0 without causing an interrupt In basic timer operating mode the
141. haracter This information is then used to program the baud rate in terms of timer counts based on the oscillator frequency The ISP feature requires that an initial character an uppercase be sent to the P89LPC9231 to establish the baud rate The ISP firmware provides auto echo of received characters Once baud rate initialization has been performed the ISP firmware will only accept Intel Hex type records Intel Hex records consist of ASCII characters used to represent hexadecimal values and are summarized below NNAAAARRDD DDCC crlf In the Intel Hex record the NN represents the number of data bytes in the record The P89LPC9321 will accept up to 64 40H data bytes The AAAA string represents the address of the first byte in the record If there are zero bytes in the record this field is often set to 0000 The RR string indicates the record type A record type of 00 is a data record A record type of 01 indicates the end of file mark In this application additional record types will be added to indicate either commands or data for the ISP facility The maximum number of data bytes in a record is limited to 64 decimal ISP commands are summarized in Table 108 As a record is received by the P89LPC9321 the information in the record is stored internally and a checksum calculation is performed The operation indicated by the record type is not performed until the entire record has been received Should an error occur in the checks
142. has been transmitted NACK has been received Last data byte in I2DAT has been transmitted AA 0 ACK has been received Application software response to from I2DAT No I2DAT action or I2DAT action or I2DAT action or I2DAT action No I2DAT action or no I2DAT action or no I2DAT action or no I2DAT action to I2CON STA STO 0 0 0 0 0 0 0 1 1 0 0 0 1 0 0 1 0 0 0 0 0 0 0 1 1 0 0 0 1 0 0 1 Next action taken hardware Switched to not addressed SLA mode no recognition of own SLA or General call address Switched to not addressed SLA mode Own slave address will be recognized General call address will be recognized if IZADR 0 1 Switched to not addressed SLA mode no recognition of own SLA or General call address A START condition will be transmitted when the bus becomes free Switched to not addressed SLA mode Own slave address will be recognized General call address will be recognized if I2ADR 0 1 A START condition will be transmitted when the bus becomes free Switched to not addressed SLA mode no recognition of own SLA or General call address Switched to not addressed SLA mode Own slave address will be recognized General call address will be recognized if IZADR 0 1 Switched to not addressed SLA mode no recognition of own SLA or General call address A START condition will be transmitted when the bus becomes
143. he DPTR that is not currently selected is not accessible to software unless the DPS bit is toggled Specific instructions affected by the Data Pointer selection are INC DPTR Increments the Data Pointer by 1 JMP A DPTR Jump indirect relative to DPTR value MOV DPTR data16 Load the Data Pointer with a 16 bit constant MOVC A A DPTR Move code byte relative to DPTR to the accumulator MOVX A DPTR Move accumulator to data memory relative to DPTR MOVX DPTR A Move from data memory relative to DPTR to the accumulator Also any instruction that reads or manipulates the DPH and DPL registers the upper and lower bytes of the current DPTR will be affected by the setting of DPS The MOVX instructions have limited application for the P89LPC9321 since the part does not have an external data bus However they may be used to access Flash configuration information see Flash Configuration section or auxiliary data XDATA memory NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 108 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Bit 2 of AUXR1 is permanently wired as a logic 0 This is so that the DPS bit may be toggled thereby switching Data Pointers simply by incrementing the AUXR1 register without the possibility of inadvertently altering other bits in the register 17 Data EEPROM UM10310_1 The P89LPC9321 has 512 bytes of on chip Data EEPROM that can
144. he received 9th data bit goes into RB8 and the first 8 data bits go into SBUF write to SBUF shift transmit tart TxD XC 02 X 08 X04 X 05 X 08 X 07 X 188 Y 2 E INTLO 0 INTL RX clock RXD ut X Di X D3 X X X DT X RES a SMODO 0 SMODO 1 002 927 Fig 29 Serial Port Mode 2 or 3 only single transmit buffering case is shown 10 13 Framing error and RI in Modes 2 and with SM2 1 If SM2 1 in modes 2 and 3 RI and FE behaves as in the following table UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 65 of 139 NXP Semiconductors UM1 031 0 UM10310_1 10 14 10 15 10 16 10 17 P89LPC9321 User manual Table 60 FE and RI when SM2 1 in Modes 2 and 3 Mode PCON 6 RB8 SMODO 2 0 0 No RI when RB8 0 Occurs during STOP bit 1 Similar to Figure 29 with SMODO 0 RI Occurs during STOP occurs during RB8 one bit before FE bit 3 1 0 No RI when RB8 2 0 Will NOT occur 1 Similar to Figure 29 with SMODO 1 RI Occurs during STOP occurs during STOP bit bit Break detect A break is detected when 11 consecutive bits are sensed low and is reported in the status register SSTAT For Mode 1 this consists of the start bit 8 data bits and two stop bit times For Modes
145. he slaves are selected by the corresponding SS signals The SPI master can use any port pin including P2 4 SS to drive the SS pins 12 1 Configuring the SPI Table 82 shows configuration for the master slave modes as well as usages and directions for the modes Table 82 SPI master and slave selection SPEN SSIG SSPin MSTR Master MISO MOSI SPICLK Remarks or Slave Mode 0 x P2 40 x SPI P2 3 2 2 P2 5l SPI disabled P2 2 P2 3 P2 4 P2 5 are used Disabled as port pins 1 0 0 0 Slave output input input Selected as slave 1 0 1 0 Slave Hi Z input input Not selected MISO is high impedance to avoid bus contention 1 0 0 1 gt Slave output input input P2 4 SS is configured as an input or 0 2 quasi bidirectional pin SSIG is 0 Selected externally as slave if SS is selected and is driven low The MSTR bit will be cleared to logic 0 when SS becomes low UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 88 of 139 NXP Semiconductors UM1 031 0 Table 82 P89LPC9321 User manual SPI master and slave selection continued SPEN SSIG SSPin MSTR Master MISO MOSI SPICLK Remarks 1 1 1 1 P2 4l1 2 4 or Slave Mode 1 Master Hi Hi Z MOSI and SPICLK are at high impedance to idle avoid bus contention when the MAster is idle The application must pull up or pull down SPICLK depending on CPOL SPCTL 3 to avoid a floating SPICLK N Master output output
146. hen the processor wakes up from Power down mode it will start the oscillator immediately and begin execution when the oscillator is stable Oscillator stability is determined by counting 1024 CPU clocks after start up when one of the crystal oscillator configurations is used or 200ms to 300ms after start up for the internal RC or 32 OSCCLK cycles after start up for external clock input Some chip functions continue to operate and draw power during Power down mode increasing the total power used during power down These include Brownout Detect e Watchdog Timer if WDCLK WDCON O is logic 1 Comparators Note Comparators can be powered down separately with PCONA 5 set to logic 1 and comparators disabled Real time Clock System Timer and the crystal oscillator circuitry if this block is using it unless RTCPD i e PCONA 7 is logic 1 Total Power down mode This is the same as Power down mode except that the Brownout Detection circuitry and the voltage comparators are also disabled to conserve additional power Note that a brownout reset or interrupt will not occur Voltage comparator interrupts and Brownout interrupt cannot be used as a wake up source The internal RC oscillator is disabled unless both the RC oscillator has been selected as the system clock AND the RTC is enabled The following are the wake up options supported e Watchdog Timer if WDCLK WDCON O is logic 1 Could generate Interrupt or Reset either one can wake up the device
147. igned to optimize the erase and programming mechanisms P89LPC9321 uses Vpp as the supply voltage to perform the Program Erase algorithms When voltage supply is lower than 2 4V the BOD FLASH is tripped and flash erase program is blocked 18 2 Features Parallel programming with industry standard commercial programmers e In Circuit serial Programming ICP with industry standard commercial programmers e AP Lite allows individual and multiple bytes of code memory to be used for data storage and programmed under control of the end application NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 112 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Internal fixed boot ROM containing low level In Application Programming IAP routines that can be called from the end application in addition to IAP Lite Default serial loader providing In System Programming ISP via the serial port located in upper end of user program memory Boot vector allows user provided Flash loader code to reside anywhere in the Flash memory space providing flexibility to the user Programming and erase over the full operating voltage range Read Programming Erase using ISP IAP or IAP Lite Any flash program operation in 2 ms 4 ms for erase program Programmable security for the code in the Flash for each sector 100 000 typical erase program cycles for each byte 10 year minimum d
148. ion was aborted due to an interrupt occurring during a program or erase cycle 1 SV Security Violation Set if program or erase operation fails due to security settings Cycle is aborted Memory contents are unchanged CRC output is invalid 2 HVE High Voltage Error Set if error detected in high voltage generation circuits Cycle is aborted Memory contents may be corrupted 3 VE Verify error Set during IAP programming of user code if the contents of the programmed address does not agree with the intended programmed value IAP uses the MOVC instruction to perform this verify Attempts to program user code that is MOVC protected can be programmed but will generate this error after the programming cycle has been completed 4107 unused reads as a logic 0 UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 124 of 139 NXP Semiconductors UM10310 P89LPC9321 User manual Table 110 IAP function calls IAP function IAP call parameters Program User Code Input parameters requires key Read Version Id ACC 00h R3 number of bytes to program R4 page address MSB R5 page address LSB R7 pointer to data buffer in RAM use IDATA Return parameter s R7 status Carry set on error clear on no error Input parameters 01 Return parameter s R7 IAP version id Misc Write requires Input parameters UM10310 1
149. ions as described below P2 0 ICB 1 2 0 Port 2 bit 0 ICB Input Capture P2 1 OCD 2 2 1 Port 2 bit 1 OCD Output Compare D P2 2 MOSI 13 P2 2 Port 2 bit 2 y o MOSI SPI master out slave in When configured as master this pin is output when configured as slave this pin is input P2 3 MISO 14 2 3 Port 2 bit 3 y o MISO When configured as master this pin is input when configured as slave this pin is output P2 4 SS 15 P2 4 Port 2 bit 4 SPI Slave select UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 6 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 1 Pin description continued Symbol Pin Type Description P2 5 SPICLK 16 y o P2 5 Port 2 bit 5 SPICLK SPI clock When configured as master this is output when configured as slave this pin is input P2 6 0CA 27 y o P2 6 Port 2 bit 6 Output Compare 2 7 28 P2 7 Port 2 bit 7 ICA Input Capture A P3 0 to P3 1 y o Port 3 Port 3 is a 2 bit I O port with a user configurable output type During reset Port 3 latches are configured in the input only mode with the internal pull up disabled The operation of Port 3 pins as inputs and outputs depends upon the port configuration selected Each port pin is configured independently Refer to Section 4 1 Port co
150. iption 0 GC General call bit When set the general call address 00H is recognized otherwise it is ignored 1 7 I2ADR1 7 7 bit own slave address When in master mode the contents of this register has no effect NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 71 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual 11 3 12 control register The CPU can read and write this register There are two bits are affected by hardware the SI bit and the STO bit The SI bit is set by hardware and the STO bit is cleared by hardware CRSEL determines the SCL source when the 12 is in master mode In slave mode this bit is ignored and the bus will automatically synchronize with any clock frequency up to 400 kHz from the master 2 device When CRSEL 1 the 12C interface uses the Timer 1 overflow rate divided by 2 for the 2 clock rate Timer 1 should be programmed by the user in 8 bit auto reload mode Mode 2 Data rate of I C bus Timer overflow rate 2 PCLK 2 256 reload value If fos 12 MHz reload value is 0 to 255 so 2 data rate range is 11 72 Kbit sec to 3000 Kbit sec When CRSEL 0 the 2 interface uses the internal clock generator based on the value of I2SCLL and I2CSCLH register The duty cycle does not need to be 50 The STA bit is START flag Setting this bit causes the 2 interface to enter master mode and attempt transmitting a S
151. is feature is enabled by setting the SM2 bit in SCON In the 9 bit UART modes mode 2 and mode 3 the Receive Interrupt RI will be automatically set when the received byte contains either the Given address or the Broadcast address The 9 bit mode requires that the 9th information bit is a 1 to indicate that the received information is an address and not data Using the Automatic Address Recognition feature allows a master to selectively communicate with one or more slaves by invoking the Given slave address or addresses All of the slaves may be contacted by using the Broadcast address Two special Function Registers are used to define the slave s address SADDR and the address mask SADEN SADEN is used to define which bits in the SADDR are to be used and which bits are don t care The SADEN mask can be logically ANDed with the SADDR to create the Given address which the master will use for addressing each of the slaves Use of the Given address allows multiple slaves to be recognized while excluding others The following examples will help to show the versatility of this scheme Table 61 Slave 0 1 examples Example 1 Example 2 Slave 0 SADDR 11000000 Slave 1 SADDR 1100 0000 SADEN 1111 1101 SADEN 1111 1110 Given 1100 00X0 Given 1100 000X In the above example SADDR is the same and the SADEN data is used to differentiate between the two slaves Slave 0 requires a 0 in bit 0 and it ignores bit 1
152. is logic 0 and SS is used to select the slave The SPI master can use any port pin including P2 4 SS to drive the SS pin master slave 8 BIT SHIFT E REGISTER _ 8 BIT SHIFT REGISTER SPI CLOCK GENERATOR gt SPICLOCK 55 1 1 1 1 1 1 1 1 1 1 1 1 SPICLK 1 1 T 1 1 1 1 1 002aaa902 1 1 1 Fig 40 SPI dual device configuration where either be a master a slave Figure 40 shows a case where two devices are connected to each other and either device can be a master or a slave When no SPI operation is occurring both can be configured as masters MSTR 1 with SSIG cleared to 0 and P2 4 SS configured in quasi bidirectional mode When a device initiates a transfer it can configure P2 4 as an output and drive it low forcing a mode change in the other device see Section 12 4 Mode change on 55 to slave NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 87 of 139 NXP Semiconductors UM10310 P89LPC9321 User manual master MISO slave 8 BIT SHIFT REGISTER MOSI SPICLK rt 8 BIT SHIFT S REGISTER SPI CLOCK GENERATOR port port slave MISO 8 BIT SHIFT MOSI REGISTER 002aaa903 Fig 41 SPI single master multiple slaves configuration In Figure 41 SSIG SPCTL 7 bits for the slaves are logic 0 and t
153. is the same as for the quasi bidirectional mode The open drain port configuration is shown in Figure 11 An open drain port pin has a Schmitt triggered input that also has a glitch suppression circuit Please refer to the P89LPC9321 data sheet Dynamic characteristics for glitch filter specifications port t pin port latch data input data lt glitch rejection 002aaa915 Fig 11 Open drain output UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 30 of 139 NXP Semiconductors UM1 031 0 UM10310_1 4 4 4 5 P89LPC9321 User manual Input only configuration The input port configuration is shown in Figure 12 It is a Schmitt triggered input that also has a glitch suppression circuit Please refer to the P89LPC9321 data sheet Dynamic characteristics for glitch filter specifications input port data 4 pin glitch rejection 002 916 Fig 12 Input only Push pull output configuration The push pull output configuration has the same pull down structure as both the open drain and the quasi bidirectional output modes but provides a continuous strong pull up when the port latch contains a logic 1 The push pull mode may be used when more source current is needed from a port output The push pull port configuration is shown in Figure 13 A push pull port pin has a Schmitt triggered input that also has a glitch suppressio
154. ite to DEECON with ECTL1 ECTLO DEECON 5 4 11 and EWERR1 EWERRO DEECON 2 1 00 Set bit EADR8 1 2 Write the fill pattern to the DEEDAT register 3 Write any address to DEEADR Note that the entire address is ignored in a block fill operation Poll EWERRt flag If EWERR1 DEECON 2 bit is logic 1 BOD EEPROM occurred Vpp lt 2 4V and Data EEPROM program is blocked If both the EIEE IEN1 7 bit and the EA IENO 7 bit are logic 1s wait for the Data EEPROM interrupt then read poll the EEIF DEECON 7 bit until it is set to logic 1 If EIEE or EA is logic the interrupt is disabled and only polling is enabled When EEIF is logic 1 the operation is complete Poll EWERRO flag If EWERRO DEECON 1 bit is logic 1 it means BOD EEPROM occurred Vpp 2 4V during program or erase and the previous operation may not be correct 18 Flash memory UM10310 1 18 1 General description The P89LPC9321 Flash memory provides in circuit electrical erasure and programming The Flash can be read and written as bytes The Sector and Page Erase functions can erase any Flash sector 1 kB or page 64 bytes The Chip Erase operation will erase the entire program memory Five Flash programming methods are available On chip erase and write timing generation contribute to a user friendly programming interface The P89LPC9321 Flash reliably stores memory contents even after 100 000 erase and program cycles The cell is des
155. ith 1 1 96 to 97 borrow SUBB A data Subtract immediate from A with borrow 2 1 94 INC A Increment A 1 1 04 INC Rn Increment register 1 1 08 to OF INC dir Increment direct byte 2 1 05 INC Increment indirect memory 1 1 06 to 07 DECA Decrement A 1 1 14 DEC Rn Decrement register 1 1 18 to 1F DEC dir Decrement direct byte 2 1 15 DEC Ri Decrement indirect memory 1 1 16 to 17 INC DPTR Increment data pointer 1 2 A3 MUL AB Multiply A by B 1 4 A4 DIV AB Divide A by B 1 4 84 DAA Decimal Adjust A 1 1 D4 LOGICAL ANL A Rn AND register to A 1 1 58 to 5F ANL A dir AND direct byte to A 2 1 55 ANL A Ri AND indirect memory to A 1 1 561057 A data AND immediate to 2 1 54 ANL dir A AND A to direct byte 2 1 52 ANL dir data AND immediate to direct byte 3 2 53 ORL A Rn OR register to A 1 1 48 to 4F ORL A dir OR direct byte to A 2 1 45 ORL A Ri OR indirect memory to A 1 1 46 to 47 ORL A data OR immediate to A 2 1 44 ORL dir A OR A to direct byte 2 1 42 ORL dir data OR immediate to direct byte 3 2 43 UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 131 of 139 NXP Semiconductors UM10310 P89LPC9321 User manual Table 123 Instruction set summary continued Mnemonic Description Bytes Cycles Hex code XRL A Rn Exclusive OR register to A 1 1 68 to 6F A dir Exclusive OR direct byte to A 2 1 65 Ri Exclusive OR indirect memory to A 1 1 66 to 67
156. kes it easy for one or more bytes within a page to be erased and programmed in a single operation without the need to erase or program any other bytes in the page IAP Lite is performed in the application under the control of the microcontroller s firmware using four SFRs and an internal 64 byte page register to facilitate erasing and programing within unsecured sectors These SFRs are FMCON Flash Control Register When read this is the status register When written this is a command register Note that the status bits are cleared to logic Os when the command is written FMADRL FMADRH Flash memory address low Flash memory address high Used to specify the byte address within the page register or specify the page within user code memory UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 113 of 139 NXP Semiconductors UM1 031 0 UM10310_1 P89LPC9321 User manual FMDATA Flash Data Register Accepts data to be loaded into the page register The page register consists of 64 bytes and an update flag for each byte When a LOAD command is issued to FMCON the page register contents and all of the update flags will be cleared When FMDATA is written the value written to FMDATA will be stored in the page register at the location specified by the lower 6 bits of FMADRL In addition the update flag for that location will be set FMADRL will auto increment to the next location Auto incre
157. manual Status code Status of the 12C Application software response Next action taken by 125 hardware to from I2DAT to I2CON hardware STA 5 SI AA 88H Previously Read data byte or 0 0 0 0 Switched to not addressed SLA addressed with mode no recognition of own SLA or own SLA address general address Data nae been read data byte 0 0 0 1 Switched to not addressed SLA received NACK mode Own SLA will be recognized has been returned general call address will be recognized if IZADR 0 1 read data byte 1 0 0 0 Switched to not addressed SLA or mode no recognition of own SLA or General call address A START condition will be transmitted when the bus becomes free read data byte 1 0 0 1 Switched to not addressed SLA mode Own slave address will be recognized General call address will be recognized if IBADR 0O 1 A START condition will be transmitted when the bus becomes free 90H Previously Read data byte or x 0 0 0 Data byte will be received and NOT addressed with ACK will be returned General call Data data byte 0 0 1 Data byte will be received and has been will be returned received ACK has been returned 98H Previously Read data byte 0 0 0 0 Switched to not addressed SLA addressed with mode no recognition of own SLA or General call Data General call address has peet read data byte 0 0 0 1 Switched to not addressed SLA received NACK mode Own slave address
158. manual Mode 3 11 bits are transmitted through TXD or received through RXD a start bit logic 0 8 data bits LSB first a programmable 9th data bit and a stop bit logic 1 Mode 3 is the same as Mode 2 in all respects except baud rate The baud rate in Mode 3 is variable and is determined by the Timer 1 overflow rate or the Baud Rate Generator see Section 10 6 Baud Rate generator and selection In all four modes transmission is initiated by any instruction that uses SBUF as a destination register Reception is initiated in Mode 0 by the condition RI 0 and REN 1 Reception is initiated in the other modes by the incoming start bit if REN 1 SFR space The UART SFRs are at the following locations Table 51 UART SFR addresses Register Description SFR location PCON Power Control 87H SCON Serial Port UART Control 98H SBUF Serial Port UART Data Buffer 99H SADDR Serial Port UART Address A9H SADEN Serial Port UART Address Enable B9H SSTAT Serial Port UART Status BAH BRGR1 Baud Rate Generator Rate High Byte BRGRO Baud Rate Generator Rate Low Byte BRGCON Baud Rate Generator Control BDH Baud Rate generator and selection The P89LPC9321 enhanced UART has an independent Baud Rate Generator The baud rate is determined by a value programmed into the BRGR1 and BRGRO SFRs The UART can use either Timer 1 or the baud rate generator output as determined by BRGCON 2 1 see Figure 26 Note that Ti
159. mediately 5 If there is more data go to 7 else continue 6 6 If there is no more data then If DBISEL is logic 0 no more interrupt will occur If DBISEL is logic 1 and INTLO is logic 0 a Tx interrupt will occur at the beginning of the STOP bit of the data currently in the shifter which is also the last data f DBISEL is logic 1 and INTLO is logic 1 a Tx interrupt will occur at the end of the STOP bit of the data currently in the shifter which is also the last data 7 If there is more data the CPU writes to TB8 again 8 The CPU writes to SBUF again Then f INTLO is logic 0 the new data will be loaded and a Tx interrupt will occur at the beginning of the STOP bit of the data currently in the shifter If INTLO is logic 1 the new data will be loaded and a Tx interrupt will occur at the end of the STOP bit of the data currently in the shifter 9 Go to 4 10 Note that if DBISEL is logic 1 and the CPU is writing to SBUF when the STOP bit of the last data is shifted out there can be an uncertainty of whether a Tx interrupt is generated already with the UART not knowing whether there is any more data following Multiprocessor communications UART modes 2 and 3 have a special provision for multiprocessor communications In these modes 9 data bits are received or transmitted When data is received the 9th bit is stored in RB8 The UART can be programmed such that when the stop bit
160. ment after writing to the last byte in the page register will wrap around to the first byte in the page register but will not affect FMADRL 7 6 Bytes loaded into the page register do not have to be continuous Any byte location can be loaded into the page register by changing the contents of FMADRL prior to writing to FMDATA However each location in the page register can only be written once following each LOAD command Attempts to write to a page register location more than once should be avoided FMADRH and FMADRL 7 6 are used to select a page of code memory for the erase program function When the erase program command is written to FMCON the locations within the code memory page that correspond to updated locations in the page register will have their contents erased and programmed with the contents of their corresponding locations in the page register Only the bytes that were loaded into the page register will be erased and programmed in the user code array Other bytes within the user code memory will not be affected Writing the erase program command 68H to FMCON will start the erase program process and place the CPU in a program idle state The CPU will remain in this idle state until the erase program cycle is either completed or terminated by an interrupt When the program idle state is exited FMCON will contain status information for the cycle If an interrupt occurs during an erase programming cycle the erase programming cy
161. mer T1 is further divided by 2 if the SMOD1 bit PCON 7 is set The independent Baud Rate Generator uses CCLK Updating the BRGR1 and BRGRO SFRs The baud rate SFRs BRGR1 and BRGRO must only be loaded when the Baud Rate Generator is disabled the BRGEN bit in the BRGCON register is logic 0 This avoids the loading of an interim value to the baud rate generator CAUTION If either BRGRO or BRGR1 is written when BRGEN 1 the result is unpredictable Table 52 UART baud rate generation SCON 7 SCON 6 PCON 7 BRGCONA Receive transmit baud rate for UART SMO SM1 SMOD1 SBRGS 0 0 X X CCLKy 6 0 1 0 0 CELK 56 1 64 1 0 CELK ose TH1 32 X 1 BRGR1 BRGRO 16 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 60 of 139 NXP Semiconductors UM1 031 0 UM10310_1 10 8 10 9 P89LPC9321 User manual Table 52 UART baud rate generation continued SCON 7 SCON 6 PCON 7 1 Receive transmit baud rate for UART SMO SM1 SMOD1 SBRGS 1 0 0 X 1 X CCLKy 6 1 1 0 0 CELK o56 TH1 64 1 0 COLS 25 1 2 X 1 CCLK amp RGR1 BRGRO 16 Table 53 Baud Rate Generator Control register BRGCON address BDh bit allocation Bit 7 6 5 4 3 2 1 0 Symbol SBRGS BRGEN Reset x 0 0 Table 54 Baud Rate Generator Control register BRGCON address BDh bit description Bit Symbol Description 0 Baud Rate Gene
162. miconductors does not give any representations or warranties expressed or implied as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information Right to make changes NXP Semiconductors reserves the right to make changes to information published in this document including without limitation specifications and product descriptions at any time and without notice This document supersedes and replaces all information supplied prior to the publication hereof UM10310_1 Suitability for use NXP Semiconductors products are not designed authorized or warranted to be suitable for use in medical military aircraft space or life support equipment nor in applications where failure or malfunction of an NXP Semiconductors product can reasonably be expected to result in personal injury death or severe property or environmental damage NXP Semiconductors accepts no liability for inclusion and or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and or use is at the customer s own risk Applications Applications that are described herein for any of these products are for illustrative purposes only NXP Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification 20 3 Trademarks Notice All referenced brands product names servic
163. mmer or a global erase command commercial programmer 2 EDISx Erase Disable ISP Disables the ability to perform an erase of sector x in ISP or IAP mode When programmed this bit and sector x can only be erased by a global erase command using a commercial programmer This bit and sector x CANNOT be erased in ISP or IAP modes 37 reserved Table 118 Effects of Security Bits EDISx SPEDISx MOVCDISx Effects on Programming 0 0 0 None 0 0 1 Security violation flag set for sector CRC calculation for the specific sector Security violation flag set for global CRC calculation if any MOVCDISx bit is set Cycle aborted Memory contents unchanged CRC invalid Program erase commands will not result in a security violation 0 1 Security violation flag set for program commands erase page command Cycle aborted Memory contents unchanged Sector erase and global erase are allowed 1 X X Security violation flag set for program commands or an erase page command Cycle aborted Memory contents unchanged Global erase is allowed 18 19 Boot Vector register Table 119 Boot Vector BOOTVEC bit allocation Bit 7 6 5 4 3 2 1 0 Symbol BOOTV4 BOOTV3 BOOTV2 1 BOOTVO Factory default 0 0 0 1 1 1 1 1 value Table 120 Boot Vector BOOTVEC bit description Bit Symbol Description 0 4 BOOTV 0O 4 Boot vector If the Boot Vector is selected as the reset address the P89LPC9321 will start execution at
164. mpedance 1 1 Open drain Quasi bidirectional output configuration Quasi bidirectional outputs can be used both as an input and output without the need to reconfigure the port This is possible because when the port outputs a logic high it is weakly driven allowing an external device to pull the pin low When the pin is driven low it is driven strongly and able to sink a large current There are three pull up transistors in the quasi bidirectional output that serve different purposes One of these pull ups called the very weak pull up is turned on whenever the port latch for the pin contains a logic 1 This very weak pull up sources a very small current that will pull the pin high if it is left floating A second pull up called the weak pull up is turned on when the port latch for the pin contains a logic 1 and the pin itself is also at a logic 1 level This pull up provides the primary source current for a quasi bidirectional pin that is outputting a 1 If this pin is pulled low by an external device the weak pull up turns off and only the very weak pull up remains on In order to pull the pin low under these conditions the external device has to sink enough current to overpower the weak pull up and pull the port pin below its input threshold voltage The third pull up is referred to as the strong pull up This pull up is used to speed up low to high transitions on a quasi bidirectional port pin when the port latch chang
165. n circuit Please refer to the P89LPC9321 data sheet Dynamic characteristics for glitch filter specifications VDD strong pin port latch N data input data TM glitch rejection 002aaa917 Fig 13 Push pull output 4 6 Port 0 and Analog Comparator functions The P89LPC9321 incorporates two Analog Comparators In order to give the best analog performance and minimize power consumption pins that are being used for analog functions must have both the digital outputs and digital inputs disabled NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 31 of 139 NXP Semiconductors UM1 031 0 UM10310_1 4 7 P89LPC9321 User manual Digital outputs are disabled by putting the port pins into the input only mode as described in the Port Configurations section see Figure 12 Digital inputs on Port 0 may be disabled through the use of the PTOAD register Bits 1 through 5 in this register correspond to pins PO 1 through PO0 5 of Port 0 respectively Setting the corresponding bit in PTOAD disables that pin s digital input Port bits that have their digital inputs disabled will be read as 0 by any instruction that accesses the port On any reset PTOAD bits 1 through 5 default to logic Os to enable the digital functions Additional port features After power up all pins are in Input Only mode Please note that this is different from the LPC76x series of devices
166. n mode the I C clock will be disabled regardless of this bit 4 reserved UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 36 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 21 Power Control register A PCONA address B5h bit description continued Bit Symbol Description 5 VCPD Analog Voltage Comparators power down When logic 1 the voltage comparators are powered down User must disable the voltage comparators prior to setting this bit 6 DEEPD Data EEPROM power down When logic 1 the Data EEPROM is powered down Note that in either Power down mode or Total Power down mode the Data EEPROM will be powered down regardless of this bit 7 RTCPD Real time Clock power down When logic 1 the internal clock to the Real time Clock is disabled 6 Reset The P1 5 RST pin can function as either an active low reset input or as a digital input P1 5 The RPE Reset Pin Enable bit in UCFG1 when set to 1 enables the external reset input function on P1 5 When cleared P1 5 may be used as an input pin Remark During a power on sequence The RPE selection is overridden and this pin will always functions as a reset input An external circuit connected to this pin should not hold this pin low during a Power on sequence as this will keep the device in reset After power on this input will function either as an external reset input or as a digital input as defined
167. n supply gain factors of 2x 4x 8x or 16x eliminating the need for external opamps in the end application Refer to Section 13 7 Programmable Gain Amplifier PGA for PGA details 13 1 Comparator configuration Each comparator has control register CMP1 for comparator 1 and CMP2 for comparator 2 The control registers are identical and are shown in Table 84 UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 94 of 139 NXP Semiconductors UM1 031 0 UM10310_1 P89LPC9321 User manual The overall connections to both comparators are shown in Figure 46 There are eight possible configurations for each comparator as determined by the control bits in the corresponding CMPn register CPn CNn and OEn These configurations are shown in Figure 47 When each comparator is first enabled the comparator output and interrupt flag are not guaranteed to be stable for 10 microseconds The corresponding comparator interrupt should not be enabled during that time and the comparator interrupt flag must be cleared before the interrupt is enabled in order to prevent an immediate interrupt service Table 83 Comparator Control register CMP1 address ACh CMP2 address bit allocation Bit 7 6 5 4 3 2 1 0 Symbol CEn CPn CNn OEn COn CMFn Reset X X 0 0 0 0 0 0 Table 84 Comparator Control register CMP1 address ACh CMP2 address bit description Bit Symbol Des
168. n the CPU at a lower rate reducing power consumption By dividing the clock the CPU can retain the ability to respond to events other than those that can cause interrupts i e events that allow exiting the Idle mode by executing its normal program at a lower rate This can often result in lower power consumption than in Idle mode This can allow bypassing the oscillator start up time in cases where Power down mode would otherwise be used The value of DIVM may be changed by the program at any time without interrupting code execution Low power select The P89LPC9321 is designed to run at 18 MHz CCLK maximum However if CCLK is 8 MHz or slower the CLKLP SFR bit AUXR1 7 can be set to a logic 1 to lower the power consumption further On any reset CLKLP is logic 0 allowing highest performance This bit can then be set in software if CCLK is running at 8 MHz or slower The P89LPC9321 uses a four priority level interrupt structure This allows great flexibility in controlling the handling of the P89LPC9321 s 15 interrupt sources NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 25 of 139 NXP Semiconductors UM1 031 0 UM10310_1 3 1 P89LPC9321 User manual Each interrupt source can be individually enabled or disabled by setting or clearing a bit in the interrupt enable registers IENO or IEN1 The IENO register also contains a global enable bit EA which enables all interrupts Each interru
169. n the register 3 SRST Software Reset When set by software resets the P89LPC9321 as if a hardware reset occurred 4 ENTO When set the P1 2 pin is toggled whenever Timer 0 overflows The output frequency is therefore one half of the Timer 0 overflow rate Refer to Section 7 Timers 0 and 1 for details 5 When set the 7 is toggled whenever Timer 1 overflows The output frequency is therefore one half of the Timer 1 overflow rate Refer to Section 7 Timers 0 and 1 for details 6 EBRR UART Break Detect Reset Enable If logic 1 UART Break Detect will cause a chip reset and force the device into ISP mode 7 Clock Low Power Select When set reduces power consumption in the clock circuits Can be used when the clock frequency is 8 MHz or less After reset this bit is cleared to support up to 12 MHz operation Software reset The SRST bit in AUXR1 gives software the opportunity to reset the processor completely as if an external reset or watchdog reset had occurred If a value is written to AUXR1 that contains a 1 at bit position 3 all SFRs will be initialized and execution will resume at program address 0000 Care should be taken when writing to AUXR1 to avoid accidental software resets Dual Data Pointers The dual Data Pointers DPTR adds to the ways in which the processor can specify the address used with certain instructions The DPS bit in the AUXR1 register selects one of the two Data Pointers T
170. nction register Bit address B register FOH Baud rate BEH generator 0 rate low Baud rate BFH generator 0 rate high Baud rate BDH generator 0 control Capture EAH compare A control register Capture EBH compare B control register Capture ECH compare C control register Capture EDH compare D control register Comparator1 control register Comparator2 ADH control register Data EEPROM control register Bit functions and addresses Reset value MSB LSB Hex Binary E7 E6 E5 E4 2 1 00 0000 0000 CLKLP EBRR ENT1 ENTO SRST 0 DPS 00 0000 00 0 F7 F6 F5 F4 F3 F2 F1 FO 00 0000 0000 00 0000 0000 00 0000 0000 SBRGS BRGEN 00121 00 ICECA2 ICECA1 ICECAO ICESA ICNFA FCOA OCMA1 OCMAO 00 0000 0000 ICECB2 ICECB1 ICECBO ICESB ICNFB FCOB OCMB1 OCMBO 00 0000 0000 FCOC OCMC1 OCMCO 00 000 FCOD OCMD1 OCMDO 00 000 CE1 1 CN1 1 1 1 0011 00 0000 2 2 CN2 OE2 2 CMF2 0011 00 0000 ECTL1 ECTLO EWERR1 EWERRO EADR8 08 00001000 Jesf 1666541684 OLEOLINN SIOJONPUODIWIS dXN jenuew sn 8002 1equie2eg 10 6611001 OLEOLWN 78002 7 78 dXN Table 2 Special function registers continued indicates SFRs that are bit addressable Name DEEDAT DEEADR DIVM DPTR DPH DPL FMADRH
171. nfigurations for details All pins have Schmitt triggered inputs Port 3 also provides various special functions as described below P3 0 XTAL2 9 P3 0 Port 3 bit 0 CLKOUT O XTAL2 Output from the oscillator amplifier when a crystal oscillator option is selected via the flash configuration O CLKOUT CPU clock divided by 2 when enabled via SFR bit ENCLK TRIM 6 It can be used if the CPU clock is the internal RC oscillator watchdog oscillator or external clock input except when XTAL1 XTAL2 are used to generate clock source for the RTC system timer P3 1 XTAL1 8 1 Port 3 bit 1 XTAL1 Input to the oscillator circuit and internal clock generator circuits when selected via the flash configuration It can be a port pin if internal RC oscillator or watchdog oscillator is used as the CPU clock source and if XTAL1 XTAL2 are not used to generate the clock for the RTC system timer Vss 7 0 Vpp 21 Power supply This is the power supply voltage for normal operation as as Idle and Power down modes 1 Input output for P1 0 to P1 4 P1 6 P1 7 Input for P1 5 UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 7 of 139 NXP Semiconductors UM10310 UM10310_1 1 3 Functional diagram P89LPC9321 User manual Fig 4 KBIO gt 2 lt KBl1 gt CIN2B KBI2 CIN2A
172. not completed When CLKOK is 1 clock switch is completed When start new clock source switch CLKOK is cleared automatically Notice that when CLKOK is 0 Writing to register is not allowed During reset register value comes from UCFG1 and UCFG2 The reset value of CLKCON 2 to CLKCON 0 come from UCFG1 2 to UCFG1 0 and reset value of CLKDBL bit comes from UCFG2 7 Table 7 Clock control register CLKCON address FFDEh bit allocation Bit 7 6 5 4 3 2 1 0 Symbol CLKOK XTALWD CLKDBL FOSC2 FOSC1 FOSCO Reset 1 0 0 0 x x x x Table 8 Clock control register CLKCON address FFDEh bit description Bit Symbol Description 2 0 FOSC2 FOSC1 oscillator type selection for clock switch See Section 2 for additional FOSCO information Combinations other than those shown in Table 9 are reserved for future use should not be used 3 CLKDBL Clock doubler option for clock switch When set doubles the output frequency of the internal RC oscillator 4 XTALWD external crystal oscillator as the clock source of watchdog timer When 0 disable external crystal oscillator as the clock source of watchdog timer 6 5 reserved 7 CLKOK Clock switch completed flag When 1 clock switch is completed When 0 clock switch is processing and writing to register CLKCON is not allowed UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 24 of 139 NXP Semiconduc
173. nual 1 2 Pin description Table 1 Pin description Symbol Pin Type Description P0 0 to 0 7 Port 0 Port 0 is 8 bit I O port with a user configurable output type During reset Port 0 latches are configured in the input only mode with the internal pull up disabled The operation of Port 0 pins as inputs and outputs depends upon the port configuration selected Each port pin is configured independently Refer to Section 4 1 Port configurations for details The Keypad Interrupt feature operates with Port 0 pins All pins have Schmitt triggered inputs Port 0 also provides various special functions as described below P0 0 CMP2 KBIO P0 0 Port 0 bit 0 CMP2 Comparator 2 output KBIO Keyboard input 0 P0 1 CIN2B 26 P0 1 Port 0 bit 1 CIN2B Comparator 2 positive input Keyboard input 1 2 2 25 y o P0 2 Port 0 bit 2 2 CIN2A Comparator 2 positive input KBI2 Keyboard input 2 P0 3 CIN1B 24 y o P0 3 Port 0 bit 3 High current source KBIS CIN1B Comparator 1 positive KBI3 Keyboard input 3 4 23 P0 4 Port 0 bit 4 High current source KBI4 CIN1A Comparator 1 positive input KBI4 Keyboard input 4 AD13 ADC1 channel 3 analog input PO 5 CMPREF 22 P0 5 Port 0 bit 5 High current source KBIS CMPREF Comparator reference negative
174. ors UM1 031 0 UM10310_1 13 7 P89LPC9321 User manual Positive input on Negative input from CMPREF pin Output to CMP1 pin enabled CALL delayi0us The comparator needs at least 10 microseconds before use ANL CMP1 0FEh Clear comparator 1 interrupt flag SETB EC Enable the comparator interrupt SETB EA Enable the interrupt system if needed RET Return to caller The interrupt routine used for the comparator must clear the interrupt flag CMF1 in this case before returning Programmable Gain Amplifier PGA is integrated to amplify the comparators inputs A single channel can be selected for amplification The block diagram of PGA1 is shown in Figure 48 MUX PGA1 GAIN PGA11 PGA10 PGATRIM1 PGASEL11 PGASEL10 Fig 48 PGA1 block diagram 002aae212 Register PGACON1 and PGACON1B are used for PGA1 configuration The gain of PGA1 can be programmable to 2 4 8 or 16 by configuring PGAG11 and PGAG10 bits PGA is enabled by setting ENPGA1 bit If ENPGA1 is cleared PGA1 is disabled and bypassed which means the PGA1 gain value is 1 Four external input signals are selected by configuring PGASEL11 and PGASEL10 bits PGA offset voltage is used to guarantee the linearity of PGA output When enable PGAENOFFx bit in register PGACONxB PGA output will be the PGA input plus offset voltage PGA input can be grounded by setting PGATRIMx bit 4 bit trim
175. ows the user to set the clock polarity Figure 42 to Figure 45 show the different settings of Clock Phase bit CPHA NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 90 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Clock cycle 1 SPICLK CPOL 0 SPICLK CPOL 1 MOSI input DORD 0 MSB V Len i SS if SSIG bit 0 002aaa934 1 Not defined Fig 42 SPI slave transfer format with CPHA 0 UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 91 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Clock cycle 1 SPICLK CPOL 0 11111111111 SPICLK CPOL 1 LE LI LE MOSI input MISO output SS if SSIG bit 0 002 935 1 Not defined Fig 43 SPI slave transfer format with CPHA 1 UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 92 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Clock cycle 1 SPICLK CPOL 0 SPICLK CPOL 1 MOSI input DORD 0 MSB LSB DORD 1 LSB MSB MISO output
176. pt request The EEIF bit will need to be cleared by software Data EEPROM program or erase will be blocked when Vpp lt 2 4V See Table 104 EWERR 1 and bits are used to indicate the write error for BOD EEPROM EWERRO will be Set when lt 2 4V during program or erase operation to indicate the previous operation may not be correct EWERR 1 will be Set when a program or erase is requested and Vpp 2 4V Both can be cleared by power on reset watchdog reset or software write Data EEPROM read A byte can be read via polling or interrupt 1 Write to DEECON with ECTL1 ECTLO DEECON 5 4 00 and correct bit 8 address to EADRS Note that if the correct values are already written to DEECON there is no need to write to this register 2 Without writing to the DEEDAT register write address bits 7 to 0 to DEEADR 3 If both the EIEE IEN1 7 bit and the EA IENO 7 bit are logic 1s wait for the Data EEPROM interrupt then read poll the EEIF DEECON 7 bit until it is set to logic 1 If EIEE or EA is logic the interrupt is disabled only polling is enabled 4 Read the Data EEPROM data from the DEEDAT SFR Note that if DEEDAT is written prior to a write to DEEADR if DEECON 5 4 007 a Data EEPROM write operation will commence The user must take caution that such cases do not occur during a read An example is if the Data EEPROM is read in an interrupt service routine with the interrupt occurring in the middle of a
177. pt inputs in addition to the Keypad Interrupt function The two interrupt inputs are identical to those present on the standard 80C51 microcontrollers These external interrupts can be programmed to be level triggered or edge triggered by clearing or setting bit IT1 or ITO in Register TCON If ITn 0 external interrupt is triggered by a low level detected at the INTn pin If ITn 1 external interrupt n is edge triggered In this mode if consecutive samples of the INTn pin show a high level in one cycle and a low level in the next cycle interrupt request flag IEn in TCON is set causing an interrupt request Since the external interrupt pins are sampled once each machine cycle an input high or low level should be held for at least one machine cycle to ensure proper sampling If the external interrupt is edge triggered the external source has to hold the request pin high for at least one machine cycle and then hold it low for at least one machine cycle This is to ensure that the transition is detected and that interrupt request flag IEn is set IEn is automatically cleared by the CPU when the service routine is called NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 26 of 139 UM10310 P89LPC9321 User manual NXP Semiconductors If the external interrupt is level triggered the external source must hold the request active until the requested interrupt is generated If the external interrupt is
178. pt source can be individually programmed to one of four priority levels by setting or clearing bits in the interrupt priority registers IPO IPOH IP1 and IP1H An interrupt service routine in progress can be interrupted by a higher priority interrupt but not by another interrupt of the same or lower priority The highest priority interrupt service cannot be interrupted by any other interrupt source If two requests of different priority levels are received simultaneously the request of higher priority level is serviced If requests of the same priority level are pending at the start of an instruction cycle an internal polling sequence determines which request is serviced This is called the arbitration ranking Note that the arbitration ranking is only used for pending requests of the same priority level Table 11 summarizes the interrupt sources flag bits vector addresses enable bits priority bits arbitration ranking and whether each interrupt may wake up the CPU from a Power down mode Interrupt priority structure Table 10 Interrupt priority level Priority bits IPXH Interrupt priority level 0 0 Level 0 lowest priority 0 1 Level 1 1 0 Level 2 1 1 Level 3 There are four SFRs associated with the four interrupt levels IPO IPOH IP1 IP1H Every interrupt has two bits in IPx and IPxH x 0 1 and can therefore be assigned to one of four levels as shown in Table 11 The P89LPC9321 has two external interru
179. put in the master mode and is input in the slave mode If the SPI system is disabled i e SPEN SPCTL 6 0 reset value these pins are configured for port functions SS is the optional slave select pin In a typical configuration an SPI master asserts one of its port pins to select one SPI device as the current slave An SPI slave device uses its SS pin to determine whether it is selected The SS is ignored if any of the following conditions are true fthe SPI system is disabled i e SPEN SPCTL 6 0 reset value SPI is configured as a master i e SPCTL 4 1 and P2 4 is configured as an output via the P2M1 4 and P2M2 4 SFR bits Ifthe SS pin is ignored i e SSIG SPCTL 7 bit 1 this pin is configured for port functions Note that even if the SPI is configured as a master MSTR 1 it can still be converted to a slave by driving the SS pin low if P2 4 is configured as input and SSIG 0 Should this happen the SPIF bit SPSTAT 7 will be set see Section 12 4 Mode change on 55 Typical connections are shown in Figure 39 to Figure 41 Table 77 SPI Control register SPCTL address E2h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol SSIG SPEN DORD MSTR CPOL CPHA SPR1 SPRO Reset 0 0 0 0 0 1 0 0 UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 85 of 139 NXP Semiconductors UM1 031 0 UM10310_1 P89LPC9321 User manual
180. put shift register and reception of the rest of the frame will proceed The signal to load SBUF and and to set RI will be generated if and only if the following conditions are met at the time the final shift pulse is generated RI 0 and either SM2 0 or the received stop bit 1 If either of these two conditions is not met the received frame is lost If both conditions are met the stop bit goes into RB8 the 8 data bits go into SBUF and RI is activated UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 64 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual TX clock write to SBUF shift transmit tart TXD Lo X Di X 02 X X X D5 X D6 X TI INTLO 0 INTLO 1 clock sum RXD bt RI 002 926 Fig 28 Serial Port Mode 1 only single transmit buffering case is shown 10 12 More about UART Modes 2 and 3 Reception is the same as in Mode 1 The signal to load SBUF and RB8 and to set RI will be generated if and only if the following conditions are met at the time the final shift pulse is generated a RI 0 and b Either SM2 0 or the received 9th data bit 1 If either of these conditions is not met the received frame is lost and RI is not set If both conditions are met t
181. r When logic 0 count up When logic 1 count down PWM channel A B alternately output enable When this bit is set the output of PWM channel A and B are alternately gated on every counter cycle PWM channel C D alternately output enable When this bit is set the output of PWM channel and D are alternately gated on every counter cycle PWM Halt Enable When logic 1 a capture event as enabled for Input Capture A pin will immediately stop all activity on the PWM pins and set them to a predetermined state PWM Halt When set indicates a halt took place In order to re activate the PWM the user must clear the HLTRN bit Phase Locked Loop Enable When set to logic 1 starts PLL operation After the PLL is in lock this bit it will read back a one 9 4 Output compare The four output compare channels A B C and D are controlled through four 16 bit SFRs OCRAH OCRAL OCRBH OCRBL OCRCH OCRCL OCRDH OCRDL Each output compare channel needs to be enabled in order to operate The channel is enabled by selecting a Compare Output Action by setting the OCMx1 0 bits in the Capture Compare x Control Register CCCRx x A B C D When a compare channel is enabled the user will have to set the associated I O pin to the desired output mode to connect the pin Note The SFR bits for port pins P2 6 P1 6 P1 7 P2 1 must be set to logic 1 in order for the compare channel outputs to be visible at the port pins When the contents of TH2 TL2 matc
182. r Mode In this mode any changes to WDCON are written to the shadow register after one watchdog clock cycle A watchdog underflow will set the WDTOF bit If IENO 6 is set the watchdog underflow is enabled to cause an interrupt WDTOF is cleared by writing a logic 0 to this bit in software When an underflow occurs the contents of WDL is reloaded into the down counter and the watchdog timer immediately begins to count down again A feed is necessary to cause WDL to be loaded into the down counter before an underflow occurs Incorrect feeds are ignored in this mode UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 106 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Watchdog oscillator MOV WFEED1 0A5H MOV WFEED2 05AH external crystal oscillator WDL C1H reset 8 BIT DOWN COUNTER XTALWD WDCON A7H Tener T T Tos were Fig 51 Watchdog Timer in Timer Mode WDTE 0 002aae094 15 5 Power down operation 15 6 The WDT oscillator and external crystal oscillator will continue to run in power down consuming approximately 50 as long as the WDT oscillator is selected as the clock source for the WDT Selecting PCLK as the WDT source will result in the WDT oscillator going into power down with the rest of the device see Section 15 3 Power down mode will also prevent PCLK f
183. ransition of the comparator output from a low to high state will set the comparator flag CMFx This will cause an interrupt if the comparator interrupt is enabled The user should therefore disable the comparator interrupt prior to disabling the comparator Additionally the user should clear the comparator flag CMFx after disabling the comparator NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 96 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual 13 5 Comparators and power reduction modes Either or both comparators may remain enabled when Power down mode or Idle mode is activated but both comparators are disabled automatically in Total Power down mode If a comparator interrupt is enabled except in Total Power down mode a change of the comparator output state will generate an interrupt and wake up the processor If the comparator output to a pin is enabled the pin should be configured in the push pull mode in order to obtain fast switching times while in Power down mode The reason is that with the oscillator stopped the temporary strong pull up that normally occurs during switching on a quasi bidirectional port pin does not take place Comparators consume power in Power down mode and Idle mode as well as in the normal operating mode This should be taken into consideration when system power consumption is an issue To minimize power consumption the user can power down the compa
184. ransmitter To initialize the Slave Receiver Mode the user should write the slave address to the Slave Address Register IBADR and the 12 Control Register ICON should be configured as follows Table 72 12 Control register 12 address D8h Bit 7 6 5 4 3 2 1 0 I2EN STA STO SI AA CRSEL value 1 0 0 0 1 CRSEL is not used for slave mode I2EN must be set 1 to enable I C function AA bit must be set 1 to acknowledge its own slave address or the general call address STA STO and SI are cleared to 0 After I2ADR and I2CON are initialized the interface waits until it is addressed by its own address or general address followed by the data direction bit which is O W If the direction bit is 1 R it will enter Slave Transmitter Mode After the address and the direction bit have been received the SI bit is set and a valid status code can be read from the Status Register I2S TAT Refer to Table 76 for the status codes and actions UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 76 of 139 NXP Semiconductors UM1 031 0 UM10310_1 P89LPC9321 User manual logic write data transferred logic 1 read n Bytes acknowledge acknowledge SDA LOW from Master to Slave A not acknowledge SDA HIGH from Slave to Master S STAHT condition P STOP condition RS repeated START condition 002aaa932 Fig 35 Format of Slave Recei
185. rator Enable Enables the baud rate generator BRGR1 and BRGRO can only be written when BRGEN 0 1 SBRGS Select Baud Rate Generator as the source for baud rates to UART in modes 1 and 3 see Table 52 for details 2 7 reserved timer 1 overflow PCLK based oM E BRES ZD _ baud rate modes 1 and 3 SMOD1 0 baud rate generator SBRGS 1 CCLK based 002 897 Fig 26 Baud rate generation for UART Modes 1 3 Framing error A Framing error occurs when the stop bit is sensed as a logic 0 A Framing error is reported in the status register SSTAT In addition if SMODO PCON 6 is 1 framing errors can be made available in SCON 7 If SMODO is 0 SCON 7 is SMO It is recommended that SMO and SM1 SCON 7 6 are programmed when SMODO is logic 0 Break detect A break detect is reported in the status register SSTAT A break is detected when any 11 consecutive bits are sensed low Since a break condition also satisfies the requirements for a framing error a break condition will also result in reporting a framing error Once a break condition has been detected the UART will go into an idle state and remain in this idle state until a stop bit has been received The break detect can be used to reset the device and force the device into ISP mode by setting the EBRR bit AUXR1 6 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 61 of 139 NXP Semiconductors
186. rators by disabling the comparators and setting PCONA 5 to logic 1 or simply putting the device in Total Power down mode CINnA D gt a 002aaa618 002 620 000 b CPn 001 CINnA COn VREF 1 23 V gt COn 1 23 V 002 621 002 622 010 d CPn CNn OEn 011 CINnB CINnB CMPn 002aaa623 002aaa624 e CPn CNn 100 f CPn CNn 10 1 CINnB CINnB COn VREF 1 23 V gt 1 23 V gt 002 625 002 626 9 CPn 110 h CPn CNn OEn 2 1 1 1 Fig 47 Comparator configurations Suppose PGA1 is disabled or 1 13 6 Comparators configuration example The code shown below is an example of initializing one comparator Comparator 1 is configured to use the CIN1A and CMPREF inputs outputs the comparator result to the pin and generates an interrupt when the comparator output changes CMPINIT MOV PTOAD 030h Disable digital INPUTS on CMPREF ANL POM2 0CFh Disable digital OUTPUTS on pins that are used ORL P0M1 030h for analog functions CIN1A CMPREF MOV CMP1 024h Turn on comparator 1 and set up for UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 97 of 139 NXP Semiconduct
187. register A PCONA address B5h C9h bit allocation 58 bit allocation 36 Table 50 CCU interrupt control register TICR2 address Table 21 Power Control register A PCONA address B5h C9h bit description 58 bit description 36 Table 51 UART SFR addresses 60 Table 22 Reset Sources register RSTSRC address DFh Table 52 UART baud rate generation 60 bit 38 Table 53 Baud Rate Generator Control register BRGCON Table 23 Reset Sources register RSTSRC address DFh address bit allocation 61 bit description 38 Table 54 Baud Rate Generator Control register BRGCON Table 24 Timer Counter Mode register TMOD address address BDh bit description 61 89h bit allocation 39 Table 55 Serial Port Control register SCON address 98h Table 25 Timer Counter Mode register TMOD address bit allocation 62 89h bit description 39 Table 56 Serial Port Control register SCON address 98h Table 26 Timer Counter Auxiliary Mode register TAMOD bit description 62 address 8Fh bit allocation 40 Table 57 Serial Port modes 62 Table 27 Timer Counter Auxiliary Mode register TAMOD Table
188. rom running and therefore the watchdog is effectively disabled Periodic wake up from power down without an external oscillator Without using an external oscillator source the power consumption required in order to have a periodic wake up is determined by the power consumption of the internal oscillator Source used to produce the wake up The Real time clock running from the internal RC oscillator can be used The power consumption of this oscillator is approximately 300 uA Instead if the WDT is used to generate interrupts the current is reduced to approximately 50 uA Whenever the WDT underflows the device will wake up 16 Additional features UM10310 1 The AUXR1 register contains several special purpose control bits that relate to several chip features AUXR1 is described in Table 102 Table 101 AUXR 1 register address A2h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol CLKLP EBRR ENT1 ENTO SRST 0 DPS Reset 0 0 0 0 0 0 x 0 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 107 of 139 NXP Semiconductors UM1 031 0 UM10310 1 16 1 16 2 P89LPC9321 User manual Table 102 AUXR1 register address A2h bit description Bit Symbol Description 0 DPS Data Pointer Select Chooses one of two Data Pointers 1 Not used Allowable to set to a logic 1 2 0 This bit contains a hard wired 0 Allows toggling of the DPS bit by incrementing AUXR1 without interfering with other bits i
189. s PMOD1 PCON 1 0 0 PMODO 0 0 1 Description Normal mode default no power reduction Idle mode The Idle mode leaves peripherals running in order to allow them to activate the processor when an interrupt is generated Any enabled interrupt source or reset may terminate Idle mode Power down mode The Power down mode stops the oscillator in order to minimize power consumption The P89LPC9321 exits Power down mode via any reset or certain interrupts external pins INTO INT1 brownout Interrupt keyboard Real time Clock System Timer watchdog and comparator trips Waking up by reset is only enabled if the corresponding reset is enabled and waking up by interrupt is only enabled if the corresponding interrupt is enabled and the EA SFR bit IENO 7 is set External interrupts should be programmed to level triggered mode to be used to exit Power down mode In Power down mode the internal RC oscillator is disabled unless both the RC oscillator has been selected as the system clock AND the RTC is enabled In Power down mode the power supply voltage may be reduced to the RAM keep alive voltage VRAM This retains the RAM contents at the point where Power down mode was entered SFR contents are not guaranteed after Vpp has been lowered to VRAM therefore it is recommended to wake up the processor via Reset in this situation Vpp must be raised to within the operating range before the Power down mode is exited W
190. s In order to latch the contents of the shadow registers into the capture compare register the user must write a logic 1 to the CCU Timer Compare Overflow Update bit TCOU2 in the CCU Control Register 1 TCR21 The function of this bit depends on whether the timer is running in PWM mode in basic timer mode In basic timer mode writing a one to TCOU 2 will cause the values to be latched immediately and the value of TCOU2 will always read as zero In PWM mode writing a one to TCOU2 will cause the contents of the shadow registers to be updated on the next CCU Timer overflow As long as the latch is pending TCOU2 will read as one and will return to zero when the latch takes place TCOU2 also controls the latching of all the Output Compare registers as well as the Timer Overflow Reload registers TOR2 9 5 Input capture Input capture is always enabled Each time a capture event occurs on one of the two input capture pins the contents of the timer is transferred to the corresponding 16 bit input capture register ICRAH ICRAL or ICRBH ICRBL The capture event is defined by the UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 51 of 139 NXP Semiconductors UM1 031 0 UM10310 1 9 6 P89LPC9321 User manual Input Capture Edge Select ICESx bit x being A or B in the CCCRx register The user will have to configure the associated I O pin as an input in order for an external event to trigger a capture
191. scales PCLK by a factor of 1 to 16 This divider is found in the SFR register TCR21 The PLL frequency can be expressed as follows PLL frequency PCLK N 1 Where N is the value of PLLDV3 0 Since ranges in 0 to 15 the CCLK frequency can be in the range of PCLK to 6 Table 43 CCU control register 1 TCR21 address F9h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol TCOU2 PLLDV 3 PLLDV 2 PLLDV 1 PLLDV O Reset 0 x x x 0 0 0 0 Table 44 CCU control register 1 TCR21 address F9h bit description Bit Symbol Description 0 3 PLLDV 3 0 PLL frequency divider 4 6 Reserved 7 TCOU2 In basic timer mode writing a logic 1 to TCOU2 will cause the values to be latched immediately and the value of TCOU2 will always read as logic 0 PWM mode writing a logic 1 to TCOU2 will cause the contents of the shadow registers to be updated on the next CCU Timer overflow As long as the latch is pending TCOU2 will read as logic 1 and will return to logic 0 when the latching takes place TCOU2 also controls the latching of the Output Compare registers OCRAx OCRBx and OCRCx Setting the PLLEN bit in TCR20 starts the PLL When PLLEN is set it will not read back a one until the PLL is in lock At this time the PWM unit is ready to operate and the timer can be enabled The following start up sequence is recommended 1 Set up the PWM module without starting the timer 2 Calculate the right division factor so that the PLL
192. smitter Mode by setting the STA bit The 12C logic will send the START condition as soon as the bus is free After the START condition is transmitted the SI bit is set and the status code in I2STAT should be 08h This status code must be used to vector to an interrupt service routine where the user should load the slave address to I2DAT Data Register and data direction bit SLA W The SI bit must be cleared before the data transfer can continue When the slave address and R W bit have been transmitted and an acknowledgment bit has been received the SI bit is set again and the possible status codes are 18h 20h or 38h for the master mode or 68h 78h or OBOh if the slave mode was enabled setting AA Logic 1 The appropriate action to be taken for each of these status codes is shown in Table 73 ZEN cd logic 0 write L data transferred _ logic 1 read n Bytes acknowledge A acknowledge SDA LOW from Master to Slave not acknowledge SDA HIGH from Slave to Master S START condition P STOP condition 002aaa929 Fig 32 Format in the Master Transmitter mode 11 6 2 Master Receiver mode In the Master Receiver Mode data is received from a slave transmitter The transfer started in the same manner as in the Master Transmitter Mode When the START condition has been transmitted the interrupt service routine must load the slave address and the data direction bit to IC Data Register I2DAT The SI
193. stal 20 kHz to 100 kHz 001 Medium frequency crystal or resonator 100 kHz to 4 MHz 000 High frequency crystal or resonator 4 MHz to 18 MHz Table 114 Flash User Configuration Byte 2 UCFG2 bit allocation Bit 7 6 5 4 3 2 1 0 Symbol CLKDBL 5 Unprogrammed 0 X X X X X x x value Table 115 Flash User Configuration Byte 2 UCFG2 bit description Bit Symbol Description 0 6 Not used 7 CLKDBL Clock doubler When set doubles the output frequency of the internal RC oscillator 18 18 User security bytes This device has three security bits associated with each of its eight sectors as shown in Table 116 Table 116 Sector Security Bytes SECx bit allocation Bit 7 6 5 4 3 2 1 0 Symbol EDISx SPEDISx MOVCDISx Unprogrammed 0 0 0 0 0 0 0 0 value UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 128 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 117 Sector Security Bytes SECx bit description Bit Symbol Description 0 MOVCDISx Disable Disables the MOVC command for sector x Any MOVC that attempts to read a byte in a MOVC protected sector will return invalid data This bit can only be erased when sector x is erased 1 SPEDISx Sector Program Erase Disable x Disables program or erase of all or part of sector x This bit and sector x are erased by either a sector erase command ISP IAP commercial progra
194. ster I2STAT 12 Status Register IZADR 2 Slave Address Register 25 SCL Duty Cycle Register High Byte and I2SCLL SCL Duty Cycle Register Low Byte I C data register I2DAT register contains the data to be transmitted or the data received The CPU can read and write to this 8 bit register while it is not in the process of shifting a byte Thus this register should only be accessed when the SI bit is set Data in I2DAT remains stable as long as the SI bit is set Data in I2DAT is always shifted from right to left the first bit to be transmitted is the MSB bit 7 and after a byte has been received the first bit of received data is located at the MSB of I2DAT Table 63 12 data register IBDAT address DAh bit allocation Bit 7 6 5 4 3 2 1 0 Symbol I2DAT 7 2 6 120 5 120 4 120 12 2 I2DAT O Reset 0 0 0 0 0 0 0 0 I C slave address register I2ADR register is readable and writable and is only used when the 2 interface is set to slave mode In master mode this register has no effect The LSB of I2ADR is general call bit When this bit is set the general call address 00h is recognized Table 64 12 slave address register IZADR address DBh bit allocation Bit 7 6 5 4 3 2 1 0 Symbol I2ADR 6 I2ADR 5 I2ADR 4 I2ADR 3 I2ADR 2 I2ADR 1 I2ADR 0 GC Reset 0 0 0 0 0 0 0 0 Table 65 12 slave address register IZADR address DBh bit description Bit Symbol Descr
195. ster WDCON address A7h bit description Bit Symbol Description 0 WDCLK Watchdog input clock select When set the watchdog oscillator is selected When cleared PCLK is selected If the CPU is powered down the watchdog is disabled if WDCLK 0 see Section 15 5 Note If both WDTE and WDSE are set to 1 this bit is forced to 1 Refer to Section 15 3 for details 1 WDTOF Watchdog Timer Time Out Flag This bit is set when the 8 bit down counter underflows In watchdog mode a feed sequence will clear this bit It can also be cleared by writing a logic 0 to this bit in software 2 WDRUN Watchdog Run Control The watchdog timer is started when WDRUN 1 and stopped when WDRUN 0 This bit is forced to 1 watchdog running and cannot be cleared to zero if both WDTE and WDSE are set to 1 3 4 reserved PREO 6 PRE1 Clock Prescaler Tap Select Refer to Table 99 for details 7 2 Table 99 Watchdog timeout vales PRE2 to PREO WDL in decimal Timeout Period Watchdog Clock Source in watchdog clock 400 KHz Watchdog 12 MHz CCLK 6 MHz cycles Oscillator Clock CCLK Watchdog Nominal Clock 000 0 33 82 5 us 5 50 us 255 8 193 20 5 ms 1 37 ms 001 0 65 162 5 us 10 8 us 255 16 385 41 0 ms 2 73 ms 010 0 129 322 5 us 21 5 us 255 32 769 81 9 ms 5 46 ms 011 0 257 642 5 us 42 8 us 255 65 537 163 8 ms 10 9 ms 100 0 513 1 28 ms 85 5 us 255 131 073 327 7 ms 21 8 ms 101 0 1 025 2 56 ms 170 8 us 255 262 145 655 4 ms 43 7 ms
196. t y o TO Timer counter 0 external count input or overflow output open drain when used as output y o SCL 12 serial clock input output P1 3 INTO SDA 11 y o P1 3 Port 1 bit 3 open drain when used as output INTO External interrupt 0 input SDA 2 serial data input output 1 1 10 P1 4 Port 1 bit 4 High current source INT1 External interrupt 1 input P1 5 RST 6 P1 5 Port 1 bit 5 input only RST External Reset input during power on or if selected UCFG1 When functioning as a reset input a LOW on this pin resets the microcontroller causing ports and peripherals to take on their default states and the processor begins execution at address 0 Also used during a power on sequence to force ISP mode 1 6 5 1 6 Port 1 bit 6 High current source OCB Output Compare P1 7 OCC 4 y o P1 7 Port 1 bit 7 High current source OCC Output Compare P2 0 to P2 7 y o Port 2 Port 2 is an 8 bit I O port with a user configurable output type During reset Port 2 latches are configured in the input only mode with the internal pull up disabled The operation of Port 2 pins as inputs and outputs depends upon the port configuration selected Each port pin is configured independently Refer to Section 4 1 Port configurations for details All pins have Schmitt triggered inputs Port 2 also provides various special funct
197. t If EA bit in IENO ECCU bit in IEN1 and TOCIE2D bit are all set the program counter will vectored to the corresponding interrupt Cleared by software 7 TOIF2 CCU Timer Overflow Interrupt Flag bit Set by hardware on CCU Timer overflow Cleared by software Table 49 CCU interrupt control register TICR2 address C9h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol TOIE2 TOCIE2D TOCIE2C TOCIE2B TOCIE2A TICIE2B TICIE2A Reset 0 0 0 0 0 x 0 0 Table 50 CCU interrupt control register TICR2 address C9h bit description Bit Symbol Description 0 TICIE2A Input Capture Channel A Interrupt Enable Bit If EA bit and this bit all be set when a capture event is detected the program counter will vectored to the corresponding interrupt 1 TICIE2B Input Capture Channel B Interrupt Enable Bit If EA bit and this bit all be set when a capture event is detected the program counter will vectored to the corresponding interrupt Reserved for future use Should not be set to logic 1 by user program TOCIE2A Output Compare Channel A Interrupt Enable Bit If EA bit and this bit are set to 1 when compare channel is enabled and the contents of TH2 TL2 match that of OCRHA OCRLA the program counter will vectored to the corresponding interrupt 4 TOCIE2B Output Compare Channel B Interrupt Enable Bit If EA bit and this bit are set to 1 when compare channel is enabled and the contents of TH2 TL2 match that of OCRHB OCRLB the program counter
198. ted Cleared by software 1 TICF2B Input Capture Channel B Interrupt Flag Bit Set by hardware when an input capture event is detected Cleared by software Reserved for future use Should not be set to logic 1 by user program TOCF2A Output Compare Channel A Interrupt Flag Bit Set by hardware when the contents of TH2 TL2 match that of OCRHA OCRLA Compare channel A must be enabled in order to generate this interrupt If EA bit in IENO ECCU bit in IEN1 and TOCIE2A bit are all set the program counter will vectored to the corresponding interrupt Cleared by software 4 2 Output Compare Channel B Interrupt Flag Bit Set by hardware when the contents of TH2 TL2 match that of OCRHB OCRLB Compare channel B must be enabled in order to generate this interrupt If EA bit in IENO ECCU bit in IEN1 and TOCIE2B bit are set the program counter will vectored to the corresponding interrupt Cleared by software 5 TOCF2C Output Compare Channel C Interrupt Flag Bit Set by hardware when the contents of TH2 TL2 match that of OCRHC OCRLC Compare channel C must be enabled in order to generate this interrupt If EA bit in IENO ECCU bit in IEN1 and TOCIE2C bit are all set the program counter will vectored to the corresponding interrupt Cleared by software 6 TOCF2D Output Compare Channel D Interrupt Flag Bit Set by hardware when the contents of TH2 TL2 match that of OCRHD OCRLD Compare channel D must be enabled in order to generate this interrup
199. ter will begin Refer to Figure 27 UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 63 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual s ni sie s 5161 5161 DE sie s E 5161 5161 E 516 51 51651 ste s 5161 zit stel si6 write to SBUF shift transmit RXD data out TxD shiftclock LE LE 2 WRITE to SCON clear RI DO 2 03 D4 05 06 D7 data in TXD shift clock l l receive J 002 925 Fig 27 Serial Port Mode 0 double buffering must be disabled 10 11 More about UART Mode 1 Reception is initiated by detecting a 1 to 0 transition on RxD RxD is sampled at a rate 16 times the programmed baud rate When a transition is detected the divide by 16 counter is immediately reset Each bit time is thus divided into 16 counter states At the 7th 8th and 9th counter states the bit detector samples the value of RxD The value accepted is the value that was seen in at least 2 of the 3 samples This is done for noise rejection If the value accepted during the first bit time is not 0 the receive circuits are reset and the receiver goes back to looking for another 1 to 0 transition This provides rejection of false start bits If the start bit proves valid it is shifted into the in
200. the MOSI pin of the slave at the same time the data in SPDAT register in slave side is shifted out on MISO pin to the MISO pin of the master After shifting one byte the SPI clock generator stops setting the transfer completion flag SPIF and an interrupt will be created if the SPI interrupt is enabled ESPI or IEN1 3 1 The two shift registers in the master CPU and slave CPU can be considered as one distributed 16 bit circular shift register When data is shifted from the master to the slave data is also shifted in the opposite direction simultaneously This means that during one shift cycle data in the master and the slave are interchanged Mode change on SS If SPEN 1 SSIG 0 and MSTR 1 the SPI is enabled in master mode The SS pin can be configured as an input P2M2 4 P2M1 4 00 or quasi bidirectional 2 2 4 P2M1 4 01 In this case another master can drive this pin low to select this device as an SPI NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 89 of 139 NXP Semiconductors UM1 031 0 UM10310_1 12 5 12 6 P89LPC9321 User manual slave and start sending data to it To avoid bus contention the SPI becomes a slave As a result of the SPI becoming a slave the MOSI and SPICLK pins are forced to be an input and MISO becomes an output The SPIF flag in SPSTAT is set and if the SPI interrupt is enabled an SPI interrupt will occur User software should always ch
201. the contents of TOR2H TOR2L During the CCUCLK cycle when the reload is performed the CCU Timer Overflow Interrupt Flag TOIF2 in the CCU Interrupt Flag Register TIFR2 will be set and if the EA bit in the IENO register and ECCU bit in the IEN1 register IEN1 4 are set program execution will vector to the overflow interrupt The user has to clear the interrupt flag in software by writing a logic O to it When writing to the reload registers TOR2H and TOR2L the values written are stored in two 8 bit shadow registers In order to latch the contents of the shadow registers into TOR2H and TOR2L the user must write a logic 1 to the CCU Timer Compare Overflow Update bit TCOU2 in CCU Timer Control Register 1 TCR21 The function of this bit UM10310 1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 48 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual depends on whether the timer is running in PWM mode or in basic timer mode In basic timer mode writing a one to TCOU2 will cause the values to be latched immediately and the value of TCOU2 will always read as zero In PWM mode writing a one to TCOU2 will cause the contents of the shadow registers to be updated on the next CCU Timer overflow As long as the latch is pending TCOU2 will read as one and will return to zero when the latching takes place TCOU2 also controls the latching of the Output Compare registers OCR2A OCR2B and OCR2C
202. tors UM1 031 0 P89LPC9321 User manual Table 9 Oscillator type selection for clock switch FOSC 2 0 Oscillator configuration 111 External clock input on XTAL1 100 Watchdog Oscillator 400 kHz 5 011 Internal RC oscillator 7 373 MHz 1 96 010 Low frequency crystal 20 kHz to 100 kHz 001 Medium frequency crystal or resonator 100 kHz to 4 MHz 000 High frequency crystal or resonator 4 MHz to 18 MHz 2 9 Oscillator Clock OSCCLK wake up delay 2 10 2 11 3 Interrupts UM10310 1 The P89LPC9321 has an internal wake up timer that delays the clock until it stabilizes depending on the clock source used If the clock source is any of the three crystal selections low medium and high frequencies the delay is 1024 OSCCLK cycles plus 60 us to 100 us If the clock source is the internal RC oscillator the delay is 200 us to 300 us If the clock source is watchdog oscillator or external clock the delay is 32 OSCCLK cycles CPU Clock CCLK modification DIVM register The OSCCLK frequency can be divided down by an integer up to 510 times by configuring a dividing register DIVM to provide CCLK This produces the CCLK frequency using the following formula CCLK frequency fosc 2N Where fosc is the frequency of OSCCLK is the value of DIVM Since ranges from 0 to 255 the CCLK frequency can be in the range of fose to fosc 510 for N 0 CCLK fosc This feature makes it possible to temporarily ru
203. tput 50 Input capture 51 PWM operation 52 Alternating output mode 53 Synchronized PWM register update 54 HALT s eta uel ages 54 PLL 55 CCU interrupt structure 56 UART 59 Mode 0 34 vec 59 Mode 1 59 2 By hare ee 59 Mode 60 Space 60 Baud Rate generator and selection 60 Updating the BRGR1 and BRGRO SFRs 60 Framing 61 Break detect 61 More about UART 0 63 More about UART Mode 1 64 More about UART Modes 2 3 65 Framing error and RI Modes 2 and 3 with SM2 Seer eae eda eke ot 65 Break detect 66 Double 0 66 Double buffering in different modes 66 Transmit interrupts with double buffering enabled Modes 1 2 3 66 The 9th bit bit 8 in double buffering Modes 1 2 andi 67 Multiprocessor communications 68 Automatic address recognition 69 2
204. tput configuration 30 4 4 Input only configuration 31 4 5 Push pull output configuration 31 4 6 Port 0 and Analog Comparator functions 31 4 7 Additional port features 32 5 Power monitoring functions 33 5 1 Brownout detection 33 5 2 Power on 34 5 3 Power reduction modes 34 6 Reset 37 6 1 Reset 38 7 Timers 0 1 39 7 1 0 ee 40 7 2 Mode 1 40 7 3 2 css ilu ee UE RR 41 7 4 Mode 3 ERE REGE 41 7 5 6 2 2 41 7 6 Timer overflow toggle output 43 8 Real time clock system timer 43 8 1 Real time clock 44 8 2 Changing 51 50 45 8 3 Real time clock interrupt wake up 45 8 3 1 Real time clock read back 45 8 4 Reset sources affecting the Real time clock 45 UM10310 1 10 19 10 20 11 11 1 11 2 11 3 11 4 11 5 11 6 11 6 1 11 6 2 11 6 3 11 6 4 12 12 1 12 2 12 3 12 4 12 5 12 6 Capture Compare Unit CCU 47 CCU Clock 47 CCU Clock 47 Basic timer 48 Ou
205. ts reserved User manual Rev 01 1 December 2008 102 of 139 NXP Semiconductors UM1 031 0 UM10310_1 P89LPC9321 User manual To feed the watchdog two write instructions must be sequentially executed successfully Between the two write instructions SFR reads are allowed but writes are not allowed The instructions should move A5H to the WFEED 1 register and then to the WFEED2 register An incorrect feed sequence will cause an immediate watchdog reset The program sequence to feed the watchdog timer is as follows CLR EA disable interrupt MOV WFEED1 0A5h watchdog feed part 1 MOV WFEED2 05Ah do watchdog feed part 2 SETB EA enable interrupt This sequence assumes that the P89LPC9321 interrupt system is enabled and there is a possibility of an interrupt request occurring during the feed sequence If an interrupt was allowed to be serviced and the service routine contained any SFR writes it would trigger a watchdog reset If it is known that no interrupt could occur during the feed sequence the instructions to disable and re enable interrupts may be removed In watchdog mode WDTE 1 writing the WDCON register must be IMMEDIATELY followed by a feed sequence to load the WDL to the 8 bit down counter and the WDCON to the shadow register If writing to the WDCON register is not immediately followed by the feed sequence a watchdog reset will occur For example setting WDRUN 1 OV ACC WDCON get WDCO
206. um the P89LPC9321 will send an X out the serial port indicating a checksum error If the checksum calculation is found to match the checksum in the record then the command will be executed In most cases successful reception of the record will be indicated by transmitting a character out the serial port NXP B V 2008 rights reserved User manual Rev 01 1 December 2008 119 of 139 NXP Semiconductors UM10310 UM10310_1 P89LPC9321 User manual Table 108 In system Programming ISP hex record formats Record type 00 01 02 Command data function Program User Code Memory Page nnaaaa00dd ddcc Where nn number of bytes to program aaaa page address dd dd data bytes cc checksum Example 100000000102030405006070809DC3 Read Version Id 00xxxx01cc Where xxxx required field but value is a don t care checksum Example 00000001 FF Miscellaneous Write Functions 02xxxx02ssddcc Where xxxx required field but value is a don t care ss subfunction code dd data cc checksum Subfunction codes 002 UCFG1 01 UCFG2 02 Boot Vector 03 Status Byte 04 reserved 05 reserved 06 reserved 07 reserved 08 Security Byte 0 09 Security Byte 1 OA Security Byte 2 OB Security Byte 3 0 Security Byte 4 00 Security Byte 5 OE Security Byte 6 OF Security Byte 7 10 Clear Configuration Protection Example 020000020347B2 NXP B V 2
207. value is used to provide the PGA offset voltage in PGA trim registers PGAxTRIM2X4X and PGAxTRIM8X16X End users application can write to PGA trim registers to adjust PGA offset voltage Increasing 4 bit trim value will increase the corresponding PGA offset voltage During reset 4 bits trim value is initialized to a factory pre programmed value To guarantee the linearity of PGA output it is recommended not to change the PGA trim registers NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 98 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual Table 85 PGA trim register Register bits Contains PGAxTRIM2X4X 3 0 trim value for 2x gain value PGAxTRIM2X4X 7 4 trim value for 4x gain value PGAxTRIM8X16X 3 0 trim value for 8x gain value PGAxTRIM8X16X 7 4 trim value for16x gain value If PGA is enabled it will consume power Power can be reduced by disabling the PGA PGA can be disabled via clearing ENPGAx bit In Power down mode or Total Power down mode does not function Table 86 PGA1 Control register 1 address FFE1h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol ENPGA1 PGASEL11 PGASEL10 PGATRIM1 PGAG11 PGAG10 Reset 0 0 0 0 0 0 0 0 Table 87 PGA1 Control register PGACON1 address FFE1h bit description Bit Symbol Description 1 0 PGAG11 PGAG10 PGA Gain selection bits 00 Gain 2 01 Gain 4 10 Gain 8 11 Gain 16 3 2
208. ved Please see the data sheet for specifications Table 15 BOD Trip points configuration BOE1 BOEO BOICFG1 BOICFGO BOD Reset BOD UCFG1 5 UCFG1 3 BOICFG 1 BOICFG 0 Interrupt 0 0 0 0 Reserved 0 0 0 1 0 0 1 0 0 0 1 1 0 1 0 0 0 1 0 1 2 2V 2 4V 0 1 1 0 2 2V 2 6V 0 1 1 1 2 2V 3 2V 1 0 0 0 Reserved 1 0 0 1 1 0 1 0 2 4V 2 6V 1 0 1 1 2 4V 3 2V 1 1 0 0 Reserved 1 1 0 1 1 1 1 0 1 1 1 1 3 0V 3 2V Table 16 BOD Reset and BOD Interrupt configuration PMOD1 PMODO PCON 1 0 EBO EA BOD BOD PCON 4 5 IENO 7 Reset Interrupt 11 total power down X X X N N z 11 any mode other than total 0 X X Y N power down 1 0 X Y N X 0 Y N 1 1 Y Y Power on detection The Power On Detect has a function similar to the Brownout Detect but is designed to work as power initially comes up before the power supply voltage reaches a level where the Brownout Detect can function The POF flag RSTSRC 4 is set to indicate an initial power on condition The POF flag will remain set until cleared by software by writing a logic 0 to the bit BOF RSTSRO 5 will be set when POF is set Power reduction modes The P89LPC9321 supports three different power reduction modes as determined by SFR bits PCON 1 0 see Table 17 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 34 of 139 NXP Semiconductors UM1 031 0 Table 17 P89LPC9321 User manual Power reduction mode
209. ver mode 11 6 4 Slave Transmitter mode The first byte is received and handled as in the Slave Receiver Mode However in this mode the direction bit will indicate that the transfer direction is reversed Serial data is transmitted via P1 3 SDA while the serial clock is input through P1 2 SCL START and STOP conditions are recognized as the beginning and end of a serial transfer In a given application the 2 may operate as a master and as a slave In the slave mode the 12C hardware looks for its own slave address and the general call address If one of these addresses is detected an interrupt is requested When the microcontrollers wishes to become the bus master the hardware waits until the bus is free before the master mode is entered so that a possible slave action is not interrupted If bus arbitration is lost in the master mode the 2 switches to the slave mode immediately and can detect its own slave address in the same serial transfer Te logic 0 write data transferred logic 1 read n Bytes acknowledge A acknowledge SDA LOW from Master to Slave not acknowledge SDA HIGH from Slave to Master S START condition P STOP condition 002aaa933 Fig 36 Format of Slave Transmitter mode NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 77 of 139 NXP Semiconductors UM1 031 0 UM10310_1 P89LP
210. w has been added In the Timer function the timer is incremented every PCLK In the Counter function the register is incremented in response to a 1 to 0 transition on its corresponding external input pin TO or T1 The external input is sampled once during every machine cycle When the pin is high during one cycle and low in the next cycle the count is incremented The new count value appears in the register during the cycle following the one in which the transition was detected Since it takes two machine cycles four CPU clocks to recognize a 1 to 0 transition the maximum count rate is 4 of the CPU clock frequency There are no restrictions on the duty cycle of the external input signal but to ensure that a given level is sampled at least once before it changes it should be held for at least one full machine cycle The Timer or Counter function is selected by control bits TnC T x 0 and 1 for Timers 0 and 1 respectively in the Special Function Register TMOD Timer 0 and Timer 1 have five operating modes modes 0 1 2 3 and 6 which are selected by bit pairs 1 TnMO in TMOD and TnM2 in TAMOD Modes 0 1 2 and 6 are the same for both Timers Counters Mode 3 is different The operating modes are described later in this section Table 24 Timer Counter Mode register TMOD address 89h bit allocation Bit 7 6 5 4 3 2 1 0 Symbol T1GATE T1C T T1M1 T1MO TOGATE TOC T TOM1 TOMO Reset 0 0 0 0 0 0 0 0
211. wo or four CCLK cycles RCCLK The internal 7 373 MHz RC oscillator output The clock doubler option when enabled provides an output frequency of 14 746 MHz Clock for the various peripheral devices and is 2 2 4 Oscillator Clock OSCCLK The P89LPC9351 provides several user selectable oscillator options in generating the CPU clock This allows optimization for a range of needs from high precision to lowest possible cost These options are configured when the flash is programmed and include an on chip watchdog oscillator an on chip RC oscillator an oscillator using an external crystal or an external clock source 2 3 External crystal oscillator option The external crystal oscillator can be optimized for low medium or high frequency crystals covering a range from 20 kHz to 18 MHz It can be the clock source of OSCCLK RTC and WDT 2 3 1 Low speed oscillator option This option supports an external crystal in the range of 20 kHz to 100 kHz Ceramic resonators are also supported in this configuration UM10310_1 NXP B V 2008 All rights reserved User manual Rev 01 1 December 2008 21 of 139 NXP Semiconductors UM1 031 0 P89LPC9321 User manual 2 3 2 Medium speed oscillator option This option supports an external crystal in the range of 100 kHz to 4 MHz Ceramic resonators are also supported in this configuration 2 3 3 High speed oscillator option This option supports an external crystal in the range of 4

NXP Semiconductors P89LPC9321 UM10310 User's Manual

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