M68DEMO908GB60
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1. low power stop3 demo program will execute as the default 2 When power is applied to the Demo board and SW2 is held down the software paced loop demo program will execute 3 When power is applied to the Demo board and SW3 is held down the ATD timer demo program will execute 4 When power is applied to the Demo board and SW4 is held down the serial Debug Monitor program will execute A host serial debug program must be executed on your PC to use the monitor program To use the monitor program connect a straight through DB 9 serial cable between COM port on the personal computer and SCI1 on the Demo board 8 M68DEMO908GB60 01 12 05 DEBUG MONITOR OPERATION See the AN2140 application note on the monitor for complete details of operation Basic operation is provided in this manual The monitor occupies 1K bytes of flash memory and about to 50 bytes of stack space It provides a binary command set via the SCI1 port COMMUNICATION The monitor provides 115 2K baud serial communication on the SCl1 interface port POWER ON or RESET PROMPT The monitor will provide a binary prompt to the Demo board serial SCI1 port COMMANDS No user commands can be applied with a keyboard with software such as HyperTerminal or AxIDE The monitor commands are binary and not compatible with keyboard ASCII entry or display Host based software should interface with the monitor on the serial communication port to provide development support INTERRUPT2. PTG1 and PTG2 I O pins provide the oscillator connection and these I O pins are not provided to the MCU_PORT by default See the R3 and R4 option for changing this configuration R3 XPG2 and R4 XPG1 Options R3 and R4 component locations are open by default to isolate the sensitive crystal oscillator connections from the MCU_PORT XPG2 and XPG1 locations The user may connect the PTG1 PTG2 to the XPG1 XPG2 locations by installing a 0805 size O ohm resistor or wire jumper across the R4 R3 component locations respectfully SCMH and SCI2 Ports The COM_EN option jumper block provides HCS08 SCI I O ports to the SCI1 and SCI2 communication port connections on the Demo board This allows the user to apply the provided communication transceiver or to apply the associated I O to other purposes The option jumper positions should be reviewed first if any operational problems are encountered with the SCI1 or SCl2 ports 11 M68DEMO908GB60 01 12 05 COM_EN COM_EN HCS08 Port COM Signal T O PORT Position Connector 1 pins 1 2 RS232 Transceiver Enable U3 Notes 1 COM_EN position 1 will power off the RS232 transceiver U3 when open SC 1 and SC I2 Connection The SCI1 and SCI2 ports provide standard 9 pin connection with RS232 type interface to the HCS08 SCI and SCl2 peripherals Refer to the COM_EN options for enabling the HCS08 signals applied to these ports The SCI1 port is applied by default with the Debug Monitor The HCS08
3. TxD1 2 and RxD1 2 signals are converted to RS232 levels by U3 and provided to the DB9 serial connectors Following is the DB9S connection reference SCI1 and SCI2 1 1 X Female DB9 connector that interfaces to the HCS08 internal TXD1 2 6 6 SCI1 serial port via the U3 RS232 transceiver It applies simple RXD1 3 7 7 2 wire asynchronous serial without flow controls 4 4 8 8 1 4 6 connected and 7 8 connected GND 5 919 LED 1 5 Indicators LED Indicators 1 5 are enabled to HCS08 I O ports by the LED_EN option bank The LED indicators will light with a logic low signal applied from the respective HCS08 l O port if the option is installed The Demo board user should be familiar with the input and output application so that port conflicts do not occur Following is the LED connection reference table Position CONNECTOR 3_ pins 5 6 LED 3 PTF2 4_ pins 7 8 LED 4 PTF3 5 pins 9 10 LED 5 PTDO TPMI1CHO Note LED indicators are active logic low 12 M68DEMO908GB60 01 12 05 VRH_SEL and 1 8V Reference A 1 8 Volt reference circuit U2 is provided for demonstration program application and user application if wanted The VRH_SEL option bank selects the input and output configuration of the 1 8V reference circuit Caution should be applied when selecting the VRH_SEL options so that supply or port conflicts do not occur VRH_ SEL VRH_SEL INPUT SIGNAL OUTPUT SIGNAL OPERATION POSITION VO PORT 1 pins12 VDDAD G 3V U2ImputSupply
4. U2 is poweredon 3 pins 5 6 Notes 1 VRH_SEL jumper positions 1 pins 1 2 and 2 pins 3 4 must not be installed at the same time 2 VRH_SEL jumper positions 4 pins 7 8 and 5 pins 9 10 must not be installed at the same time JP2 VREFL JP2 is default closed by circuit trace jumper that provides a VREFL connection to Ground potential The user should not need to modify this connection SW1 SW4 Push Switches The push switches provide momentary active low input for user applications The switches provide input to HCS08 ports PTA4 PTA7 Input ports PTA4 PTA7 provide KBD4 KBD7 input interrupt capability also The switches also provide the Demo program selection during Reset or power on condition if the demo program is installed in the flash memory Refer to M68DEMO908GB60 STARTUP SW4 on HCS08 PTA7 also provides the force debug monitor active operation Holding SW4 down during power up will force the debug monitor active if it is still resident in the flash memory 13 M68DEMO908GB60 01 12 05 JP1 PWM DAC JP1 options enable a PWM signal filter on HCSO8 port PTD2 TPM1CH2 to provide a digital to analog conversion into HCSO8 PTB1 ATD1 analog input This circuit is for demonstration of analog signal generation with a PWM timer output The PTB1 ATD1 connection provides for measuring the analog signal value generated in the circuit JP1 Jumper Installation 1 2 Notes JP1 position 1 2 conn
5. ec 9 M68DEMO908GB60 BOARD OPERATION cccssssccsssssccsssssccesssccccssssccsssssccessssccsesscccsencscessnscceesscsccesseccesessnssccesscsceeses 10 POWER SUPPLY a E 10 ONOER S Wicho a Sai 10 OTLETIOS Ltd odo dci 10 PWR Power Jack A a A a 10 PWRESEL OP A A O 11 AER TA A e back eae ves deg Taeod Se sc ne Face e aA SR soe e Sea Sed agendas cee a ee 11 R3 XPG2 and R4 XPG1 Options ceviccccccccvagieesieciaces chativadeniess asad beet danse E rio AEE aS EEES E AIEE SEESE ARE o KEE Ees eos 11 SEITANDS CO PORTES ac scic 11 COMEN a a e O A A e a A do o 12 SCM and SCD Come e td 12 EEDIITINDICA KO oc 12 VRH_SEL AND 1 83 V REFERENCE ui ie 13 IS NS A i Sr ee 13 TEL E SN D De Re RP ee a eR A RP ES RR RR Pe le RE A 13 SW1 5W4 PUSH SWITCHES ii cit 13 JPA PWM DAO A A is eaves 14 M68DEMO908GB60 I O PORT CONNECTORS csssscscssssscssssccccsssccssssscccssssccsessccccessssccesssacccesscaccessecscesssaccccsscseceses 14 ANALOG AND PTB I O PORT CONNECTOR cscsesssseeececeesessecececececnesaueceeececeesesaececececeessasececececeeseaaeaeseeeceesenaaeeeesceesensaaeees 14 MCU VO PORT CONNECTOR ei 15 DEBUG POUR o e 15 M68DEMO908GB60 01 12 05 Cautionary Notes 1 Electrostatic Discharge ESD prevention measures should be applied whenever handling this product ESD damage is not a warranty repair item 2 Axiom Manufacturing does not assume any liability arising out of the application or use of any product or circuit described
6. will quickly flash once approximately twice a second The LED is on for about 600 microseconds While the LED is off the MCU is in low power stop3 mode and will remain in stop3 for approximately one half second until the next RTI M68DEMO908GB60 01 12 05 The Software paced loop demo program is executed when SW2 is held down at power up The software paced loop program blinks LED1 and LED4 LED1 will blink on and off every second LED4 will blink on and off every two seconds Both LEDs blink at a 50 duty cycle The ATD timer demo program is executed when SW3 is held down at powerup Timer 1 channel 2 is set up as a PWM output and is connected to a resistor capacitor filter network composing a digital to analog converter DAC As the duty cycle on timer 1 channel 2 changes the voltage on the top of the capacitor in the DAC will change The output from the DAC is fed into the input to the ATD channel 1 Timer 1 channel 0 is connected to LED5 Timer 1 channel 0 is also set up as a PWM output When the duty cycle of timer 1 channel 0 is increased or decreased the intensity of LED5 will follow the PWM duty cycle The PWM duty cycle of timer 1 channel 2 is increased by pushing SW1 The PWM duty cycle of timer 1 channel 2 is decreased by pushing SW2 Thus pushing SW1 or SW2 will change the intensity of LED5 The Debug Monitor program is executed when SW4 is held down at powerup The serial debugger when applied with a host PC and ass
7. 4 pins LO A E oaeee A 71014 5 channel TPM 2 Timer a Y Jak a wE H L 3 channel TPM 1 Timer O page a ed O olori a ojo ojo VDD O O GND a 8 Channel 10 BIT A D of ojo BIL O PTC ha _ SPI and IIC Serial Ports o Souls gl ered O GIET E 2 x SCI Serial Ports a melee ele Slee U3 TE elo PTOS O PTD7 ox NES PTD4 O PTDS Bey Bosra Ware up forig OE em ae L BDM DEBUG Port sci2 MEE A EN voD O O 6NO g Co an x CO Bl A pes aie Se 6000 000000000 0 0 egek generator w FEL a E Sasegseseesnesss up to 40Mhz operation o9 wam le 9923292329239329 32Kh C t o x E uT Be PIER ag sales 0000000000000000 Z rysta So Niojolo o MBBDEMOSOBGBBO PTF2 o O PTF3 0000000000000000 Sg 1234 TFO lO O PTF1 00000000000000 o 4 Regulated 3 3V power supply bia aia vo lo olen COO0000000000000 E A are a RAE E iz prosloolptre7 COPCPOOOSDODDO000 SCl1 Serial Port w RS232 DB9 S Connector O la es se A EE o ooa o OO PO O p O PTG2 O O PTGS 0000000000000000 SCI1 Serial Port gt follo fol fo me Sole cc00000000000 Ci ba b ba 0000000000000 SCl2 Serial Port w RS232 DB9 S Connector Lo TEE INE TEE SCI1 Serial Port Power ON OFF switch M68DEMO908GB60 User Components Provided 5 LED Indicators PTFO 3 PTDO 4 Push Switches PTA4 7 Digital to Analog PTD2 PTB1 1 8Volt reference MCU I O Port connector provides all digital I O Analog or PTB I O Port connector provides analog inputs or PTB I O Prototype Ar
8. LASH and debug their programs The remainder of the demo programs offer examples of some simple uses of the Demo board The Low power stop3 demo illustrates the low power capability of the MC9S08GB60 microcontroller operating in stop3 mode The ATD timer demo shows two timers set up as pulse width modulators PWM One of the PWM outputs drives an integrator DAC The other PWM output drives an LED The ATD reads the voltage output from the integrator and modulates the intensity of the LED The Software paced loop demonstrates a framework that users can implement in their system to periodically execute user routines What Do the Demo Programs Do The Stop3 demo program is the default program executed at power up if no pushbuttons are held down This program demonstrates operation of the microcontroller in low power stop3 mode The program uses the real time interrupt RTI to recover from stop3 mode In stop3 mode clocks are halted and only IRQ KBI LVI and RTI interrupts can occur For this reason when using the serial debugger you can not trace through the demo code once you have reached a stop instruction If you are using the serial debugger and you press the go button on the debugger and test 1 is entered No buttons pressed you will no longer be able to halt or trace the demo code This is because there are no clocks to the serial communications module If you observe LED1 located at the bottom left corner of the DEMO board it
9. M68DEMO908GB60 Demonstration Board for Freescale MC9SO8GB60 Includes DEMO9S08GB60 SP version Axiom Manufacturing e 2813 Industrial Lane e Garland TX 75041 il Sales Caxman com Web http www axman com M68DEMO908GB60 01 12 05 CONTENTS CAUTIONARY NOTES ivisisciscosisvicsonsscseceasessessesesseccosevascosesceisssessdecteccobestecsssestesosbesbaoesiecissesbessosssscasesseseessvseasodessaseosesdeosssessoes s 3 TERMINOLOGY murenen ar AA EN TAE TENO A EAS ENE EOS EEN EA SEN sess odinces cosesesseness 3 AAA O 4 GETTING STARTED wiasiccescccsedsacecsiccacesseucoceessvesstcceascssevesedsedsssceshevecesstsseccssuseesossesdoscuvesossaseeacgevs E succcbeossesseasnaesvescassessece 5 REFERENCE DOCUMENTA TION id id A it a taa Ea S M68DEMO908GB60 STARTUP mrene rE EN E ida 6 What Do the Demo Programs DO ccssssseesceencesscenecenecssecnseensecnaecnssonasensesssosscsseesecesecesesnsecneesaaenaecnaesaaecnasonavenseeneeeneseaes 6 Applying the Demo Programs se tesirini aa did aaar iii to ii sde ds 7 TABLE Demo Program Option SelectiONS oonononooncnonnonnnnnnonanennnonncnn nena nonn nena cnn cnn cane Danone one nn e eae aaa sai ie amp Selecting the Demo Pr grams lt a 8 TABLE 2 Demo Program Selection coincida ica ici dada reas R aiii dadas amp DEBUG MONITOR OPERA TION ssscsscscssessosssscssoscsnccvenssecssecdevossonscscssesssesensueseesseccssesessassaeoccdecesss sdeesees susesooses sess sncoudessueseossess 9 MONTOR MEMORY MAP a e
10. SERVICE SUPPORT The monitor enables automatic hardware vector relocation in the 9508GB60 so user interrupt vectors appear from OxFBCC to OxFBFF User will not have access to the SCl1 SWI and RESET vectors while the monitor is operating Programming the user Reset vector will cause the monitor to execute the user program on Reset See the AN2140 application note for user interrupt application MONITOR MEMORY MAP 0x0000 9508GB60 Direct Page Register Space 0x007F See the 9508GB60 User Manual for details 0x0080 9508GB60 ram memory space 0x107F Initial Monitor Stack Pointer 0x107F 0x1080 Lower flash block User application memory 0x17FF 0x1800 9508GB60 High Page Register block 0x182B 0x182C User Application Flash Memory OxFBCB OxFBCC User Interrupt Vectors OxFBFF See AN2140 for details on application OXFCOO Monitor Flash Memory Space Protected OxFFFF M68DEMO908GB60 01 12 05 M68DEMO908GB60 Board Operation The M68DEMO908GB60 board provides input and output features to assist in application development These features may be isolated from the applied HCS08 I O ports by the option jumpers This allows alternate use of the HCS08 l O ports for other application and connection on the I O port connectors Caution should be observed so that the HCS08 I O port pin applied to an on board feature is not also applied to external components by the user POWER SUPPLY Input power is appl
11. e the MCU PORT XPG1 and XPG2 pins to prevent crystal operation interference PTGO is the BGND signal if a BDM is connected PTFO F3 provide LED1 4 output if enabled The Debug or BDM port is a 6 pin header compatible with a Freescale Background Debug Mode BDM Pod This allows the connection of a background debugger for software development programming and debugging in real time without using HCS08 I O resources BGND PTGO GND See the HCS08 Reference Manual for complete RESET documentation of the BDM 3 3V 15
12. ea 2xAA Battery Holder Supplied with DB9 Serial Cable Documentation CD Manual and Batteries or Wall plug type power supply Specifications Board Size 4 x 4 5 Power Input 6 to 12VDC 9VDC typical Current Consumption 30ma 9VDC input M68DEMO908GB60 01 12 05 GETTING STARTED The M68DEMO908GB60 single board computer is a fully assembled fully functional development board for the Freescale MC9SO8GB60 microcontroller Provided with 2 AA batteries or wall plug power supply and serial cable Support software for this development board is provided for Windows 95 98 NT 2000 XP operating systems Development board users should also be familiar with the hardware and software operation of the target HCS08 device refer to the provided Freescale User Manual for the device and the HCS08 Reference Manual for details The demonstration board purpose is to promote the features of the 9S08GB60 device or to assist the user in quickly developing an application with a known working environment Users should be familiar with memory mapping memory types and embedded software design for the quickest successful application development Application development may be performed by applying the embedded serial interface monitor or by applying a compatible HCSO8 BDM cable with supporting host software The monitor provides an effective and low cost debug method Note that when a BDM cable is applied to the DEBUG Port for debugging the BDM pod s
13. ects PTD2 TPM1CH2 to the R C filter input JP1 position 3 4 connects PTB1 ATD1 to the R C filter output 3 4 M68DEMO908GB60 I O PORT CONNECTORS ANALOG and PTB I O Port Connector This port connector provides access to the Port B I O or Analog input signals PTBO ADO 1 2 PTB1 AD1 Ndes PTB2 AD2 3 4 PTB3 AD3 l PTB4 AD4 5 6 PTB5 AD5 1 PTBO provides 1 8V reference input if enabled VRH_SEL PTB6 AD6 7 8 PTB7 AD7 2 PTB1 provides DAC filter input if enabled JP1 VREFH 9 10 VREFL 3 VREFH is optioned by VRH_SEL 14 M68DEMO908GB60 MCU I O Port Connector 01 12 05 This port connector provides access to all the 9SO8GB60 I O ports except PTB PTAG KBD6 PTA7 KBD7 PTA4 KBD4 PTA5 KBD5 PTA2 KBD2 PTA3 KBD3 PTAO KBDO PTA1 KBD1 VDD GND PTC6 PTC7 PTC4 CLKOUT PTC5 PTC2 SDA PTC3 SCL PTCO TXD2 PTC1 RXD2 VDD GND PTD6 TPM2CH3 PTD7 TPM2CH4 PTD4 TPM2CH1 PTD5 TPM2CH2 PTD2 TPM1CH2 PTD3 TPM2CHO PTDO TPM1CHO PTD1 TPM1CH1 VDD GND PTE6 PTE7 PTE4 MOSI PTE5 SPSCK PTE2 SS PTE3 MISO PTEO TXD1 PTE1 RXD1 VDD GND PTF6 PTF7 PTF4 PTF5 PTF2 PTF3 PTFO PTF1 VDD GND PTG6 PTG7 PTG4 PTG5 PTG2 EXTAL PTG3 PTGO BGND MS RESET PTG1 XTAL IRQ DEBUG PORT Notes PTA4 7 also provide Push Switch SW1 4 PTEO 1 provide SCI1 1 O to SCI1 Port if enabled PTCO 1 provide SCI2 I O to SCI2 port if enabled PTDO provides LED5 output if enabled PTG1 2 are the Y1 XTAL and EXTAL signals by default R3 and R4 isolat
14. herein neither does it convey any license under patent rights or the rights of others 3 EMC Information on the M68DEMO908GB60 board a This product as shipped from the factory with associated power supplies and cables has been verified to meet with requirements of CE and the FCC as a CLASS A product o This product is designed and intended for use as a development platform for hardware or software in an educational or professional laboratory c In a domestic environment this product may cause radio interference in which case the user may be required to take adequate prevention measures 2 Attaching additional wiring to this product or modifying the products operation from the factory default as shipped may effect its performance and also cause interference with other apparatus in the immediate vicinity If such interference is detected suitable mitigating measures should be taken Terminology This development board applies option selection jumpers Terminology for application of the option jumpers is as follows Jumper on in or installed jumper is a plastic shunt that fits across 2 pins and the shunt is installed so that the 2 pins are connected with the shunt Jumper off out or idle jumper or shunt is installed so that only 1 pin holds the shunt no 2 pins are connected or jumper is removed It is recommended that the jumpers be idled by installing on 1 pin so they will not be lost This development board appl
15. hould be powered from an external supply The serial debug monitor is provided in the development board HCS08 device internal flash memory and applies some HCS08 resources for operation See the AN2140 application note from Freescale for complete details User applications operated under monitor control may be configured for dedicated operation by applying the User Reset Vector OxFBFE F and programming the application into the device flash The monitor will remain in protected flash memory for future use if needed Reference Documentation Reference documents are provided on the support CD in Acrobat Reader format AN2140 HCS08 Serial Monitor application note 9S08GB_GT60UM pdf 9SO8GB60 user manual HCSO08RM pdf HCS08 core user manual with instruction set M68DEMO908GB60_SCH_B pdf M68DEMO908GBE0 board schematics M6 8DEMO908GB60 01 12 05 M68DEMO908GB60 STARTUP If the DEMO board is supplied with batteries pre installed the position of the PWR_SEL option jumper must be set to the 1 2 position to enable battery power There are four examples programmed into the M68DEMO908GB6O0 board The programs are 1 Debug monitor 2 Low power stop3 demo 3 Analog to digital converter ATD timer demo 4 Software paced loop The Debug Monitor is the most important program loaded into the MCU residing on the Demo board In conjunction with a program running on a host personal computer PC the debug monitor enables users to program F
16. ied by external connection to the J1 power jack and 3 3V regulator or directly from the on board batteries The input supply is selected by the PWR_SEL option ON_OFF switch operation will enable either the regulated 3 3V or battery supply selected by the PWR_SEL option ON_OFF Switch The ON_OFF slide switch provides board power on and off control With the switch in the ON position either the regulated 3 3V or battery supply is enabled to the Demo board circuits Batteries The Demo board provides for two AA type batteries to be installed Note the polarity indications in the battery holder when installing batteries The batteries will provide a nominal 3V supply when applied See the PWR_SEL option for selecting battery operation PWR Power ack PWR provides external power input to the board The PWR jack accepts a standard 2 0 2 1mm center barrel plug connector positive voltage center to provide the VIN supply of 5 to 12 VDC 9VDC typical Volts 2mm center 10 M68DEMO908GB60 01 12 05 PWR_SEL Option The PWR_SEL option selects the input supply to the Demo board circuits Either the on board battery pack or external supply with 3 3V regulator may be selected Battery In 1 2 3 J1 3 3V In 1 2 3 Y1 Crystal Crystal Y1 provides a 32 768Khz base operating frequency to the HCS08 device The user should refer to the HCSO8 device user manual for information on frequency selection User should also note that the HCSO8
17. ies hard wired option selection for JP2 VREFL This option selection applies a circuit trace between the option pads to complete a default connection This type connection places an equivalent Jumper Installed type option The circuit trace between the option pads may be cut with a razor blade or similar type knife to isolate the default connection provided Applying the default connection again can be performed by installing the option post pins and shunt jumper or by applying a wire between the option pads M68DEMO908GB60 01 12 05 FEATURES The M68DEMO908GB60 is an evaluation or demonstration board for the M9S08GB60 microcontroller Development of applications is quick and easy with the included DB9 serial cable sample software tools examples and debug monitor The prototyping area provides space to apply the MCU I O to your needs The DEBUG port is provided for development tool application and is compatible with HCSO8 BDM interface cables and software Features M9S08GB60 CPU Ey Desi om BATTS o S CON 60K Byte Flash ue 3 90 Prao o pres als LY CEA No Sta 7 4K Bytes Ram pe of Bo mms lo oler 56 I O lines 6
18. is applied to the RS 232 level shifter The remainder of the demo programs apply the option jumper configuration of Column B If it is not important how much current the Demo board draws from the batteries during the stop3 mode demo program install the option jumpers per Column B of Table 1 Installing jumpers as per Column B extra current will be consumed by the RS 232 level shifter circuit To use the monitor program connect a straight through DB 9 serial cable between the COM port on the PC and the SCI1 connector on the Demo board M68DEMO908GB60 01 12 05 TABLE1 Demo Program Option Selections Jumper Name Column A Column B Stop3 Low Power Mode Only All Other Modes Selecting the Demo Programs Three pushbutton switches are used by the Demo board s software to select the demo programs The switches are SW2 SW3 and SW4 The switches are read at power on reset POR Hold down the pushbutton of choice while applying power Apply power to the demo PC board by sliding the ON_OFF switch located on the top center of the Demo board toward the top of the board After the ON_OFF switch is moved to the on position you can release the pushbutton SWx The actions of the switches are shown in Table 2 TABLE 2 Demo Program Selection Switch SWx No Switch held down Stop3 demo sw2_ Software paced loop demo Sw3 CAT timer demo sw4 Debug monitor NOTES 1 When power is applied to the Demo board if no switches are held down the
19. ociated debug interface program enables a user to erase device FLASH memory program FLASH memory load application programs and debug the application programs The debug monitor dedicates SCI1 as its connection to the host PC and does not use the traditional background debug mode thus eliminating the necessity for a background debug mode cable Free software is available for execution on a PC as an interface to the monitor Refer to application note AN2140 for a full explanation for using the debugger The debugger is enabled when SW4 is held down at system power up Applying the Demo Programs Before you can run the demo programs jumpers must be installed on the Demo board Depending on which programs you plan to run jumpers will be installed in a different configuration Demo programs are selected at powerup from the state of three of the pushbutton switches SW2 SW3 and SW4 located on the bottom left edge of the Demo board PWR_SEL jumper block selects the source of power for the Demo board If the Demo board is to be powered by on board batteries install a jumper on the PWR_SEL block jumper positions 1 to 2 If the PC board is to be powered by an external power supply connected to the PWR connector install a jumper on the PWR_SEL block jumper positions 2 to 3 If you want to test the stop3 mode for lowest power consumption refer to Table 1 and install the option jumpers on the Demo board per Column A In this configuration no power
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