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HSM550 Technical Reference

1. MAX703CSA PFI TRIPS AT 1 25V Rin Rp Vtrip 1 25 1 Value for Vtrip 5 5V and Rp 10k Rin 33k use 33 2k 17 Q1 vV 6 TO 12 V INPUT P16 PHOENIX2 100 1 1 SMBJ24M 600W SENSE VIN 22uF 35V LOW ESR 22uF 35V LOW ESR ITH RUN BOOST VFB TG GND SW LTC1624 29 7uH 1A R34 Lann 32 4k 1 C48 JF TPS 100uF 10V C49 JF TPS 100uF 10V SYSTROMIX 555 SOUTH 300 EAST SALT LAKE CITY UT USA 84111 TEL 1 801 534 1017 1 19 WWW SYSTRONIX COM INFO SYSTRONIX COM Title HSM550 DEVELOPMENT EVAL BOARD POWER amp RESET Size Number Rev B A 01 Systronix Inc Proprietary Data Use and or disclosure is governed by the Date Mon Jun 21 1999 Drawn by B Boyes statement on the title page of this document Filename hsm550a02 sch Sheet 11 a FOQT2 O FOQT3 O
2. A8 ATF16V8BQL 10JC A9 P2 2 A10 E 10 2 3 11 11 P2 4 A12 43 12 2 5 1 P2 6 A14 22 14 2 7 15 SZ PO 1 AD1 r36 PO 2 AD2 522 PO 5 AD3 34 P 4 AD4 ROM SELECT SYSTRONIX 555 SOUTH 300 EAST SALT LAKE CITY UT USA 84111 TEL 41 801 534 1017 FAX 1019 UN WWW SYSTRONIX COM INFOGSYSTRONIX COM 7 No Gy 4 00 CO POWER amp RESET 4AC573 SOL20 Title HSM550 DEVELOPMENT EVAL BOARD MICROCONTROLLER RST_L Size Number Rev LOADPB L Systronix Inc Proprietary Data Use and or disclosure is governed by the Date Fri Apr 30 1999 Drawn by B Boyes statement on the title page of this document Filename hsm550a sch Sheet 3 INTO NIOV AUN HEADER8X1 NIDU AUN gt HEADER8X1 PORT2 A8 A15 SRAM A16 BOOTCS L
3. BOOTOE L SRAMWR L AT27C256R 55 ND gt HEADER8X1 PORTO REFER TO TECH REFERENCE BEFORE USING VLITH IN PROTO AREA ADO AD7 HEADER4X1 100 2 E 32 768 KHZ 6pF SRAMRD_L KM681000BLG 5L GND N C 0812840 WRL CS L POWER amp RESET RST L VCC TPS 100uF 10V SYSTRONIX 555 SOUTH 300 EAST SALT LAKE CITY UT USA 84111 TEL 1 801 534 1017 FAX 1019 WWW SYSTRONIX COM INFOGSYSTRONIX COM Title HSM550 DEVELOPMENT EVAL BOARD MEMORY AND REAL TIME CLOCK Size Number Rev Systronix Inc Proprietary Data Use and or disclosure is governed by the Date Fri Apr 30 1999 Drawn by B Boyes statement on the title page of this document Filename hsm550a sch Sheet 4 PUSHBUTTON HIGH SERIAL I O 255 0 S3 R13 e 7008 2 JUMP 4X2
4. POWER 8 RESET TP1 TP2 SBX_ 12 SBX_ 12 DIGITAL INT3 SBX_INT1 SBX_INTO MCU INT2 IS KEYPAD INTERRUPT FROM SYSTRONIX SBX1 BOARD BUFFERED ALE FOR USE WITH SYSTRONIX OR CUSTOM SBX CARDS WHICH REQUIRE ADDRESS DATA DEMUX SYSTRONIX 555 SOUTH 300 EAST SALT LAKE CITY UT USA 84111 TEL 1 801 534 1017 FAX 1019 WWW SYSTRONIX COM INFOGSYSTRONIX COM Title HSM550 DEVELOPMENT EVAL BOARD SBX INTERFACE Size Number Rev MCS1 L IS NOT USED B A Systronix Inc Proprietary Data BY MOST SBX CARDS SO IT CAN A USER DECODE Use and or disclosure is governed by the Date Fri Apr 30 1999 Drawn by B Boyes statement on the title page of this document Filename hsm550a sch Sheet 10 of 11 CR2032 Lithium Battery 220 mAh 10 year projected life power on or off Replace P9 P10 MEM amp CLOCK HEADER 4X1 HEADER 4X1 every 5 years for best results UTR Li battery current typical 4 65V RESET Pu ICC 5 UA 50 vau Power off 440 nA TP4 R25 m i EEOSE CR2032H IN HOLDER 100 DIGITAL SUPPLY TEST POINTS R10 1 NNN 2 1 NINN 2 33 2k 1 390 2N4403 SOT 23
5. 33 Adding other Seral VO i osse eR e WERE DAR Midna Bak Qd ie 34 SSand S4 P shb ttons ise tio hdc C pee te eb eie Ce ens eee pid edes 34 VCC and GND in Prototype Area 1 34 DALLAS HIGH SPEED MICROCONTROLLERS ehh hh 35 High Speed Microcontroller Data Sheets eh 35 What s Different About HSM Family lsseseseeee een ene 35 POTEO a See Ase a per onthe Ea A ie fe Piet y UR ae a 35 Memory Timing suum Seis tats cai ale tat o edd ini ea Edu Ra EA S Ra 35 SODES ee Aet ct oe Ut nt tit at 36 Instruction Timing RI RI p dare 36 Power Supply and Reset Circuitry lees 36 Additional Features deeper ERR ee ie aye ult e s 36 TROUBLESHOOTING amp DEVELOPMENT TIPS esee hh hn 37 No Serial Communication between PC and 550 37 Internet FAQ ent Bos EI rera NI eet ae ote eS eat te eed ist 38 Start Simple oes ata ERA e bets UA dete Sean bout SAT SR E 38 Learning Assembly Code and Embedded Programming 38 Exception Handling e RU rice de e Re P RE Ce UR Aleta ees 39 Quick Diagriosis Table tea m
6. S signature If you don t read this manual you won t learn about this command since it s not in the on line loader help This command emits the signature of the authors of the serial loader It is located at the 20 HSM 550 Technical Reference July 13 1999 Systronix Inc top of code memory in the serial loader so it is a good test of the integrity of the loader address and data lines Other new features See the readme file on disk or the loader help screen for information on new features which your loader may contain 2 HSM 550 Technical Reference July 13 1999 Systronix Inc 22 HSM 550 Technical Reference July 13 1999 Systronix Inc HSM 550 HARDWARE Controller or ICE Pod Installation A PLCC68 part has one chamferred corner which must be aligned with the matching socket corner Device leads are relatively fragile so be careful to line up the part in the socket precisely before pressing it in place Refer to the schematics and the Dallas data sheets for processor pinout details and signal names If you are using an In Circuit Emulator ICE turn off the board and ICE power Insert the ICE pod then turn on the ICE and board power at the same time We recommend using a power strip to do this If you power one and not the other you could cause CMOS components in the ICE or the board to latch up possibly destructively We ve seen this erase PLDs and damage the ICE That s when w
7. WWW SYSTRONIX COM INFO SYSTRONIX COM INM INM Title HSM550 DEVELOPMENT EVAL BOARD ANALOG TO DIGITAL CONVERTER A GNDA Systronix Inc Proprietary Data B ANALOG SUPPLY TEST POINTS Use and or disclosure is governed by the Date Fri Apr 30 1999 Drawn by B Boyes statement on the title page of this document Filename hsm550a sch Sheet 8 C33 C34 E C35 100nF C36 100nF 1 4 E C37 100nF C38 100nF tt 1 DIGITAL P13 amp P15 ARE CONFIGURED AS DCE PORTS PROGRAM LOAD COM1 TXDO 232 SHDN L 7 SP312A SOIC MAIN APPLICATION COMM COMO U11 081820 PR35 2 3 DQ VDD vec VOCAL TEMPERATURE AND SERIAL NUMBER P5 SYSTRONIX DOW NET CONNECTOR UNUSED 555 SOUTH 300 EAST BP13 SALT LAKE CITY UT USA 84111 100 0k WWW SYSTRONIX COM INFOGSYSTRONIX COM DOW is tied directly to controller RP13 D GND DOW DQ VCC 2 Title HSM550 DEVELOPMENT EVAL BOARD Protect from static 100 0k SERIAL I O Size Number Rev Systronix Inc Proprietary Data Use and or disclosure is governed by the Date Fri Apr 30 1999 Drawn by B Boyes statement on the title page of this document Filename hsm550a sch Sheet 9
8. 99999 for an address or even a byte value The least significant digits either two or four depending on whether an 8 or 16 bit value are used others are ignored This keeps the loader code fast and clean but doesn t warn you if you enter nonsensical or over large values commands are one or two characters with optional arguments Arguments must be separated by one or more tab or space characters The entire command line must be completed with a carriage return Control C C 03 hex will restart the loader A backspace key 08 hex causes a destructive backspace The loader always uses xon Q 11 hex and xoff S 13 hex flow control The flow control is accepted as input from the host PC in other words the PC can pause the loader s output The loader does not emit flow control characters to the PC so the PC can send a stream of data at the selected baud rate and the loader is guaranteed to keep up As you use a slower and slower crystal the fastest baud rate supported also decreases 9600 baud max at 1 8432 MHz for example so the maximum incoming data rate is self limiting 17 HSM 550 Technical Reference July 13 1999 Systronix Inc Serial Loader amp Demonstrator Tips amp Tricks Automate Your Testing with Script Files In load mode you can of course send a series of keyboard commands to the loader On HSM 550 this could include setting up the DS87C550 s analog to digital converter and reading the
9. RD WR L FXXX L FAXX L FBXX_L FDXX WR L PUSHBUTTONS amp LEDS PUSHBUTTON HIGH PUSHBUTTON LOW LED 3 L 41 PORTS TO INT2 444 22 54 1 5 2 129 4 10000 gt oom 2009009 55 CUUUUUUUU UUUUUUUU POWER INPUT TERMINAL POWER INPUT JACK CENTER VRAW 6 12 VDC SHELL GNDD Do CU UUUUUUU UUUUUUUU UUUUUUUU UUUUUUUU 090020000 0909099 TOTO JUMPERS JUMPER NC POSITIONS COMMENTS CLK INTA TO MCU INT1 TYPICAL CLK INTB TO MCU INT1 MCU USES INTERNAL ROM MCU USE EXTERNAL ROM DAC CHIP SELECT SERIAL DATA TO DAC SERIAL CLOCK TO DAC ANALOG INPUT RANGE SECLECTION NO JUMPER AVref to AVref 4 1 2 AVref AVref TO AVref 2 3 0 to 2AVref 1 2 SBX INT1 TO MCU INT3 1 2 SBX INTO TO MCU INT2 BUFFERED ALE FOR USE WITH 1 2 SYSTRONIX OR CUSTOM SBX CARDS WHICH REQUIRE ADDRESS DATA DEMUX ANALOG BUFFER OUTPUTS TO ADC INPUTS POWER FAIL ALARM TO INTO PUSHBUTTON HIGH TO MCU INT2 PUSHBUTTON HIGH TO MCU INT3 PUSHBUTTON HIGH TO MCU INT4 PUSHBUTTON HIGH TO MCU INT5 PUSHBUTTON HIGH TO MCU INT2 PUSHBUTTON HIGH TO MCU INT3 JUMPERS ARE NORMALLY CLOSED A TRACE CONNECTS PINS 1 amp 2 ON THE BACK OF THE BOARD THIS TRACE CAN
10. bos ius emat Rubeus eR ie ect ete Soak ont gece aie tee te 12 Loader and PLD Options and Updates 0 ccc ccc ccc eh 13 Systronix Web Site amp Forum osia k a ep ea n R E e E ehh 13 Getting Technical Support d ences egre ege a e a E a RN Ea 13 Installing and Using DOS A51 Assembler 14 Invoke A51 With a Batch File 1 niaan aa a IRI 14 Installing and Using the Windows 51 IDE amp Assembler 14 HSM 550 LOADER DEMONSTRATOR ER UR 15 What is the Smart Autobauding Loader Demonstrator EPROM 15 Autobauding Loader Supported Baud Rates 15 HSM 550 Memory in Load and Run Mode 16 Using the Serial Loader amp 17 Serial Loader Syntax Command Entry and Special 17 Serial Loader amp Demonstrator Tips amp Tricks 18 Automate Your Testing with Script Files 18 Serial Loader Command Description 18 7 loader on Ime help eet de e lente ee eere dene eR ed 18 gt Intel HEX file Ere eR Rte hee Rte e ela ee deben ens 18 D start end dump intel HEX f
11. 1 J4 PB HIGH PB LOW LED3 L LED4 HEADER4X1 P1 0 CTO INT2 P1 1 CT1 INT3 P1 2 CT2 INT4 P1 5 CT3 INTS P1 4 T2 P1 5 T2bEX P1 6 RxD1 P1 7 TxD1 LED LED4 d S PORT 00 4 OYO1 ND gt YEL FY1111C YEL FY1111C HEADERS8X1 PUSHBUTTON LOW SERIAL I O PORT 4 P4 0 CMSRO T2 SRO P4 1 CMSR1 T2 SR1 P4 2 CMSR2 T2 SR2 P4 3 CMSR3 T2_SR3 P4 4 CMSR4 T2_SR4 P4 5 CMSR5 T2 585 P4 6 CMTO T2 TGLO P4 7 CMT1 T2 TGL1 PORT 4 HEADERS8X1 DS87C550 PWM CLKO IS FOR PWM OUTO amp 1 SYSTRON IX 232 SHDN L PORTS PORT 6 PWM CLK1 IS FOR PWM OUT2 8 3 555 SOUTH 300 EAST LI SALT LAKE CITY UT USA 84111 POWER amp RESET B P6 0 PWMOO PWM OUTO TEL 1 801 534 1017 FAX 1019 HEADERS8X1 P6 1 PWMO1 PWM OUT out WWW SYSTRONIX COM INFO SYSTRONIX COM P6 3 PWMO3 PWM_OUT3 P6 4 PWMCO PWM CLKO Title HSM550 DEVELOPMENT EVAL BOARD P6 5 PWMC1 CLK1 DIGITAL I O P6 7 STADC START L Size Number Rev HEADERS8X1 B A Systronix Inc Proprietary Data DS87C550 V Use and or disclosure is governed by the Date Fri Apr 30 1999 Drawn by B Boyes statement on the title page of this document Filename hsm550a sch Sheet 5 RXDO TXDO I
12. 35 HSM 550 Technical Reference July 13 1999 Systronix Inc To provide code access which complies with data sheet specifications fast memory devices and fast control circuitry are also required There is no provision to add wait states or stretch cycles to code access in the Dallas HSM family HSM 550 uses a 10 nsec PLD to control memory access HSM 550 circuitry has been designed to provide reliable worst case performance at full operating speeds Data access both memory and I O devices can be slowed down with stretch cycles All HSM 550 circuitry has been designed to provide reliable worst case data access at full operating speeds with no stretch cycles added Strobes Due to the fast transitions on strobes termination may be required depending on your design particulars HSM 550 provides special termination of ALE for low emitted noise and reliable operation during Port 0 transitions Instruction Timing The High Speed Microcontroller Family owes its performance improvements to a redesigned 8051 core This core maintains code compatibility with the 8051 family while cutting the number of clock cycles per instruction cycle from 12 to 4 This gives a 3X increase in instruction cycles executed per second assuming all instructions take the same number of instruction cycles But they don t so the performance difference is really between 2X and 3X for a typical instruction mix Detailed instruction timing is available in the
13. 80C320 family data book Power Supply and Reset Circuitry Never ever use a capacitor and resistor for reset of a HSM family processor It s not even a good idea on a generic 8051 HSM 550 uses a precision reset control chip with proprietary Systronix circuitry to provide reliable reset control NVRAM protection during power up and power down and Power Failure Warning PFW interrupt generation Power supply accuracy and regulation with temperature and load variation is also critical Low cost regulators with 2 or better tolerance are widely available and are used in all Systronix products We also use high quality low ESR electrolytic capacitors for bulk power supply bypassing Bypass capacitors at the processor memory and high speed support chips must be high quality tantalum and multi layer ceramic devices Additional Features The High Speed Microcontroller Family has additional peripherals or memory depending on the family member Most members include a second UART watchdog timer and additional external interrupts Some include 1 KByte of on board movx memory 36 HSM 550 Technical Reference July 13 1999 Systronix Inc TROUBLESHOOTING amp DEVELOPMENT TIPS No Serial Communication between PC and HSM 550 This is the most common problem The serial port on HSM 550 is very simple and robust it s very hard to damage it If your PC isn t talking to HSM 550 its most likely that the problem is in your PC or the
14. Port 2 and Port 3 If you use the HSM 550 pushbuttons to drive some of the Interrupt pins you should see the change in values with the G command P 0 val1 val2 val3 put valueX to microcontroller portX Puts the values you provide to ports except for port pins which are used for TXD1 RXDI RD WR of Port amp Port3 WX address value write the byte to the address in xdata space NVRAM page 0 is xdata space in LOAD mode but becomes code space in RUN mode Xdata space also include I O space at F000 and above This command lets you set individual bytes of NVRAM page 0 memory and write to any location in I O space This command gives you the ability to manually write to any peripherals you ve installed in the prototype area as memory mapped I O This is very useful in debugging your hardware RX address read the byte from the address in xdata space NVRAM page 0 is xdata space in LOAD mode but becomes code space in RUN mode Xdata space also include I O space at F000 and above This command lets you read individual bytes of NVRAM page 0 memory including any location in I O space This command gives you the ability to manually read any peripherals you ve installed in the prototype area as memory mapped I O In combination with the W command you can manually configure and test all your I O devices 19 CE HSM 550 Technical Reference July 13 1999 Systronix Inc WR address value write the byte to the SF
15. be easy to order at your local bookstore This book focuses on philosophy and general good programming hygiene It s not specific to any processor Lots of true and humorous anecdotes very readable He also publishes a delightful free e mail newsletter To subscribe send a message to 38 HSM 550 Technical Reference July 13 1999 Systronix Inc majordomo ganssle com with the words subscribe embedded your email address in the body Of course substitute your actual email address for the text your email address The Microcontroller Idea Book by Jan Axelson Y ES we do stock this one It s a good overview of microntroller interfacing ideas intended for hobbyists or those who are new to embedded systems Lots of schematics and sample code available on disk for BASIC 52 controllers C and the 8051 by Thomas Schultz As the title suggests Professor Schultz assumes you will be using so most of the source code is in C But there is a lot of good information applicable to any language or assembly code Available at major bookstores and www amazon com Exception Handling embedded applications should have run time exception handling Good exception handling is one hallmark of a good programmer Exception handling is a difficult topic and highly application dependent so it is hard to make specific recommendations The serial loader uses exception handling to deal with bad command lines bad hex files and similar situati
16. cable between your PC and HSM 550 The serial port on HSM 550 does not use hardware flow control so presence or absence of handshaking signals from your PC has no effect on HSM 550 l Often people connect HSM 550 to a previously unused serial port on their PC a 1 51 use a PC COM port which you know has recently been operating correctly with another known good serial device such as a modem or printer b Ifyou have a serial mouse or pointing device and you know it works swap your mouse COM port to the unused port and put HSM 550 on the former mouse port You will have to change your PC s configuration in order to do this On a DOS or Windows 3 X PC another I O driver may be loading and interfering with PC serial port you re trying to use a Check your PC s setup b Tryanother PC c Try using another known good COM port on your PC You must use a straight through cable not a null modem cable a This means pin 2 is your PC s RXD 5 550 TXD and pin 3 is the PC s TXD HSM 550 RXD Ground is pin 5 The pins are usually numbered molded into the plastic inside the DB shell it s very tiny print The schematics contain a detailed pinout of the serial connector b Anull modem cable has TXD and RXD swapped within the cable to permit connecting 2 PCs together as if there were a modem between them hence the name null modem You can t use a null modem cable with HSM 550 If you have an oscilloscope or l
17. can HSM 550 generate all baud rates 39 HSM 550 Technical Reference July 13 1999 Systronix Inc HSM 550 QUICK DIAGNOSIS TABLE SYMPTOM EXPLANATION SOLUTION Loader starts up displays help but I get HEX file load errors A simple hello world 8051 program I have doesn t run on HSM 550 Serial I O is garbled I didn t use HSM 550 for a long time and my program is no longer in memory BCI51 program runs then appears to hang Loader address and data lines are OK but not NVRAM address and data lines DS87C550 registers and interrupt vectors differ from those in a generic 8051 and even other High Speed Micros such as the DS80C320 Baud rate mismatch or PC serial comm program got out of sync Lithium battery ran down and you lost your program in NVRAM Run time error may have occurred divide by zero math overflow etc Run loader M and A commands to test memory and address lines If M command fails run A command and beep out the address or data lines of circuitry you ve added Modify the program to use the SFR and interrupt vectors of the DS87C550 Check the bookmarks in the PDF data sheet to quickly find areas of interest HyperTerminal in particular seems prone to lose sync with incoming data if it ever gets a partial character or data at the wrong speed Close HyperTerminal and restart it Get a free new version of Hyperterminal PE over the Internet Th
18. file of source code and captured output use MIME encoding if possible to your message If you send us an example of a problem please make the example as simple as possible and include any necessary I O driver include files if you have modified them Please send us ASCII text or PDF files rather than word processor files Due to the risk of viruses we cannot accept word processor files containing macros We try to answer all e mail within one or two business days Support does not include designing or writing code for you or debugging your application We ll be happy to give you some general suggestions Beyond that if you need an application developed we offer that service as well Please feel free to contact us with any unusual questions about programming HSM 550 We can probably help you approach your needs in the most efficient way That s why we re here Customers consistently give us high marks for courteous competent technical support But we re only human and sometimes we make mistakes We listen to our customers we ve gotten some of our best product ideas from them so tell us how we re doing for you 13 HSM 550 Technical Reference July 13 1999 Systronix Inc nstalling and Using the DOS A51 Assembler We recommend you use the new RAD51 Windows IDE and Assembler However if you will be using the A51 DOS assembler install it now Just copy the file A51 EXE from the diskette into the desired directory on you
19. interfere with your application program in any way This is a very important capability and one of nicest features of HSM 550 The serial loader includes other functions such as memory test reading and writing to controller ports and so forth It is not a monitor so it cannot be accessed from your application program and cannot set breakpoints single step your program and other typical monitor functions Monitors which do this should be part of your executable program Such monitors are available from a number of sources some free If we ever get a lot of time on our hands we may develop one ourselves HSM 550 Memory Map in Load and Run Mode HSM 550 uses a single 128Kx8 SRAM with nonvolatile control logic and a battery backup to make this a 128Kx8 NonVolatile RAM device The PLD in location U5 splits the into two pages Page0 is the lower 64 Kbytes and Pagel is the upper 64 Kbytes The 4 Kbyte memory mapped I O space disables the upper 4 Kbytes of each NVRAM page While executing out of the serial loader the code page of the NVRAM 15 mapped into the data space of the controller This enables the loader to write to what will be the code page in RUN mode of the NVRAM It also prevents the controller from accessing any external data memory while in LOAD mode Therefore the loader firmware is written to use only internal data memory The table HSM 550 Serial Loader Modes and NVRAM Memory Access describes the relati
20. it 15 unlikely that the HSM 550 serial port is the problem Refer to the troubleshooting section for more tips Remember use a straight through serial cable not a null modem cable and connect to HSM 550 COMI not COMO Then send the loader a carriage return M 13 decimal 0D Hex or 0x0D usually the enter key More than half of the support calls we receive are related to these simple issues usually because a new user didn t even read the quick start section of this manual Obviously you re not making that mistake give yourself two points What is the Smart Autobauding Loader Demonstrator EPROM That s a rather ungainly name but it was the best we could think of We re not an ad agency just a bunch of engineers The loader provides Intel HEX file transfer memory fill HSM Port read and write SFR access I O space peek and poke and much more I O space peek and poke is really just I O space read and write but peek and poke somehow sounds like you re doing more You can use any terminal emulator or communications program which supports standard RS232 serial I O You don t need a Wintel PC The HSM 550 serial loader demonstrator uses the HSM second serial port COM1 on HSM 550 The serial loader resides in a 27C256 EPROM or equivalent in socket U2 Jumper JP2 must be in the position to drive the HSM s EA External Access pin low We ship HSM 550 with this jumper in the EXT position so we can
21. no wait states HSM 550 uses a32 MHz crystal in order to utilize readily available 55 nsec SRAMS and to tolerate heavy loads on the address data bus 60 KBytes each of Code and Data plus 4 KByte I O space The High Speed Micros have the same 16 bit address space as 8051s for up to 64 KBytes each of code and data HSM 550 delivers with a full complement of memory 60 KBytes each of code and data both are nonvolatile and a 4 KByte memory mapped I O space Options The industry standard 8 bit SBX mezzannine bus interface is an easy way to plug on additional memory mapped I O from dozens of vendors or create your own with our SBX prototyping board The Systronix SBX1 board supports parallel interface LCDs and matrix keypads and 24 bits ofrugged bidirectional digital I O Smart Loader Demonstrator EPROM The powerful Systronix auto bauding loader does much more than program HEX files into the development board s You canread and write all controller registers internal data and external data memory set stretch cycles test interrupts and more You can peek and poke all memory mapped I O space very handy for testing peripherals you ve added ofthis can be done manually or via script files sent from an RS232 serial port of ANY computer Wintel Mac Linux SUN whatever you need is a basic communications program Includes new Systronix RAD51 IDE and 8051 Assembler HSM 550 includes the new Systronix RADS1 Inte
22. section of this manual The analog I O of the DS87C550 requires careful low noise analog design In addition to the built in I O of the DS87C550 we added a precision 12 bit DAC a precision voltage reference and low noise CMOS opamps HSM 550 s power supply is a low noise high efficiency switching regulator The frequency of the switcher is well above the input frequency range of the board s analog I O The switcher circuit is a proprietary Systronix design which has very low output impedance and very low ripple It is actually quieter than many analog regulators We isolated the analog and digital power systems with a low impedance PI filter and split internal power and ground planes a Easy to use eval development board for the Dallas DS87C550 b Full featured complete with 60 Kbytes each of code and data memory we sell no boards with empty sockets as some vendors do to advertise a low price c Analog rich ADC DAC and precision reference analog I O buffered Multiple channels of PWM Great for development of analog control loops Clock and calendar for time stamping or time based control Designed for prototyping and development generous through hole and surface mount prototype areas clearly labeled access to all controller I O port pins SBX connector for additional I O or prototyping expansion Easy to use all you need to load a program is a PC with a serial port Built in auto bauding serial loader for easy prog
23. shown in the table Header J3 provides access to all the memory mapped I O signals which are available for your custom use 24 HSM 550 Technical Reference July 13 1999 Systronix Inc 5 550 MEMORY MAPPED I O TABLE Address Range signal name Active Signal Bytes Description hexadecimal at U10 and or J3 level location F000 FFFF FXXX L LOW J3 3 4096 address decode at FXXX portions used by HSM 550 described in this table also available for your use FF00 FFFF N A N A N A 256 reserved by Systronix or decode it yourself FE00 FEFF CLK CS L LOW 1010 15 256 DS1284 chip select at FEXX U7 20 used by HSM 550 FD00 FDFF FDXX WR LOW 13 8 256 write strobe at FDXX and WR available for your use FD00 FDFF FDXX L LOW 13 7 256 read strobe at FDXX and RD available for your use FC80 FCFF MCSI L LOW 13 6 128 SBX chip select 1 P14 20 or available for your use FC00 FC7F MCS0 L LOW P14 22 128 SBX chip select 0 or available for your use FB00 FBFF FBXX L LOW 13 5 256 address decode FBXX available for your use FA00 FAFF FAXX L LOW J3 4 256 address decode FAXX available for your use external data RD_L LOW 13 1 64K read strobe READ available for your use external data WRL LOW J3 2 64K write strobe WRITE available for your use Memory or Peripheral Devices The demultiplexed low order address lines A0 A7 are brought out to header 24 ADO AD7 MCU Port 0 are on header P20 The un multiple
24. test the loader Autobauding Loader Supported Baud Rates The Loader Demonstrator syncs to any standard baud rate from 600 to 57 600 baud with a 33 MHz crystal Note that with a 33 MHz crystal 38 400 baud error is greater than 3 and may not be reliable Here s a table of supported baud rates Crystals on the HSM 550 and in your PC are not perfect especially at temperature extremes so you may find that your PC does better or worse than the table indicates For example one new NT workstation here at Systronix World HeadQuarters WHQ does fine with a 33 MHz HSM 550 at 38400 baud while another identical workstation occasionally receives garbled characters 15 HSM 550 Technical Reference July 13 1999 Systronix Inc HSM 550 Loader Demonstrator Baud Rates Crystal 600 1200 2400 4800 9600 19200 38400 57600 33 000 Y Y Y Y Y Y error Y gt 3 22 1184 300 Y Y Y Y Y Y N Bean MHz 14 7456 150 Y Y Y Y Y N MHz 11 0592 150 Y Y Y Y Y N N MHz Serial Loader 100 Non intrusive in RUN Mode The serial loader is active only in LOAD mode Our proprietary meaning we racked our brains for a while to figure out how to make it all work memory control PLD provides this function In RUN mode the serial loader is mapped out of processor memory and does not use any processor resources In RUN mode the serial loader EPROM is placed in a low power inactive state In RUN mode our serial loader is completely non intrusive and will not
25. 84111 TEL 1 801 534 1017 FAX 1019 WWW SYSTRONIX COM INFOGSYSTRONIX COM Title HSM550 DEVELOPMENT EVAL BOARD DIGITAL TO ANALOG CONVERTER Size Number Rev Systronix Inc Proprietary Data Use and or disclosure is governed by the Date Fri Apr 30 1999 Drawn by B Boyes statement on the title page of this document Filename hsm550a sch Sheet 7 ANALOG BUFF INPO N ANALOG INPUT RANGES INP1 NO JUMPER AVref to AVref JUMPER 1 2 AVref AVref to AVref JUMPER 2 3 0 to 2AVref U 1 INP2 5 INP3 ADC 1024 Vin AVref AVref AVref NIDU AUN gt ADC_INP4 HEADER8X1 PORT 5 P5 0 ADCO P5 1 ADC1 1 P5 2 ADC2 INPS P5 3 ADC3 P5 4 ADC4 P5 5 ADC5 i 5 6 0 6 ADG_INP7 P5 7 ADC7 1 5 AVREF DS87C550 DAC ANALOG BUFF REF2048 AVREF HEADER 4X1 PINS 1 amp 2 AND GNDA ETE GNDA GNDA GNDA AVref lt VDD JUMPERED GNDA lt AVref TOGETHER P11 P12 SYSTRON IX AVref REF2048 HEADER 4X1 HEADER 4X1 555 SOUTH 300 EAST AVref GNDA POWER amp RESET we ER cid pi ro 11 HI
26. BE CUT IF DESIRED AND REJUMPERED ON THE FRONT LATER TO RECONNECT IT SYSTRONIX 555 SOUTH 300 EAST SALT LAKE CITY UT USA 84111 TEL 41 801 534 1017 FAX 1019 WWW SYSTRONIX COM INFOGSYSTRONIX COM Title HSM550 DEVELOPMENT EVAL BOARD NOTES UT B A Date Fri Apr 30 1999 Drawn by B Boyes Filename hsmb550a sch Sheet 2 60 KBYTES CODE 60 KBYTES DATA 4 KBYTES I O SPACE SERIAL I O MEM amp CLOCK tO O0 NO I C4 NO NIDU AUN DIG I O FDXX WR L ATF16V8BQL 10JC 1 DIGITAL 1 0 FFXX RESERVED US amp U10 FEXX CLOCK amp CALENDAR 10nS for 33MHz FDXX USER RD amp WR L 15ns FOR 25MHz FCXX SBX RXDO 0 7 SBX MCSO P3 1 TXDO TXDO FC 8 F X SBX MCS1 127 INTO Em FBXX USER CHIP SELECT L S INT1 INT C 7 P3 4 TO b DOW DG FAXX USER CHIP SELECT L P3 5 T1 232 SHDN L P3 6 WR 31 P3 7 RD LED2 GRN PG1111C LED1 RED BR1111C 50 50
27. CONNECT PIN 6 VRAW HEADERS cont HEADER FUNCTION P18 ANALOG INPUTS 0 3 COMMENTS ANALOG IN 0 GNDA ANALOG IN 1 GNDA ANALOG IN 2 GNDA ANALOG IN 3 GNDA PAGE 6 MCU PORT 3 MCU PORT 0 MCU PORTS 6 amp 5 SEE MCU PORT TABLE MCU PORT 2 DAC OUT SPARE OP AMP I O SPARE ANALOG OUT 1 GNDA SPARE ANALOG IN 1 GNDA SPARE ANALOG OUT 0 SPARE ANALOG IN 0 GNDA DAC OUTPUT DIGITAL GROUND TEST POINTS PINS 1 4 GNDD ANALOG INPUTS 4 7 ANALOG IN 4 GNDA ANALOG IN 5 GNDA ANALOG REFERENCES REF2048 AVREF AVREF GNDA VCC TEST POINTS PINS 1 4 VCC ANALOG GROUND TEST POINTS PINS 1 4 GNDA VDD TEST POINTS PINS 1 4 VCC COM1 PROGRAM LOAD CONNECTOR DCD ON TxXD1 RxD1 DTR NO CONNECT GND DSR QN RTS NO CONNECT CTS ON RI NO CONNECT SBX CONNECTOR SBX 12 E 2 AO SBX INTERRUPT 1 WR L SBX INTERRUPT 0 07 SBX CHIP SELECT 1 AD6 SBX CHIP SELECT 0 AD5 PIN 33 PINS 6 8 10 16 24 26 28 32 34 NO CONNECT COMO MAIN APPLICATION CONNECTOR DCD ON TxDO RxDO DTR GND DSR QN RTS NO CONNECT CTS ON RI NO CONNECT DEMULTIPLEXED ADDRESSES A0 THROUGH A7 PINS 1 8 A0 A7 REAL TIME CLOCK CLK SQW GLK INTA VLITH ADDRESS DECODER
28. E indicates an inoperative controller chip most likely due to a power or crystal problem 5 Next check the RS232 level translator carefully probe pin 14 of U16 the SP312A serial input from your PC Pin 15 of U16 is the serial output from HSM 550 BE CAREFUL If you short the charge pump pins to data pins with a scope probe you could permanently damage the SP312A device and or the HSM 550 controller This is because RS232 voltage levels exceed safe CMOS or TTL levels a Ifserial input and output on the PC side of the SP312A are toggling between at least 5V and 5V with the cable connected then RS232 serial data is getting out of the HSM 550 board and the problem is in your PC s serial cable or serial port or the configuration of your PC terminal software b IfRS232 output from the PC is toggling and the TTL signal to the controller is not then the 5 12 level translator is damaged Likewise if serial data 15 toggling from the controller but not appearing on the output of the level translator it may be damaged or your PC or cable may be clashing with the RS232 signal Remember that you will not see any output from the loader unless it receives a carriage return In any case PLEASE CONTACT US before you return your board We have almost a 100 success rate in solving problems like this over the phone We do charge a minimum service fee on boards which are returned without authorization and check out to be operating fine So please save y
29. Figure 8 Header P23 ADC reference selection own reference in the prototype area and then wire it to P23 2 and P23 3 Analog I O ADC and DAC Counts External ADC reference You may notice that when using the HSM 550 external reference the analog voltage ranges are multiples of 2048 millivolts which is 2 This is because the DAC reference is 2048 millivolts When operating on a 5V supply it 15 best to keep the maximum analog input a couple of diode drops below VCC hence the maximum analog I O value of 4 096 volts This all works out rather conveniently the DAC output is 1 mV per count 4096 millivolts is 2 the ADC input is also an even number of millivolts per count This makes conversion of the ADC and DAC values to voltage very simple For example a DAC count of 1024 is 1 024 volts With an analog input range of 0 4 096 and using the ADC in 10 bit mode each ADC count is 4 millivolts Therefore an ADC value of 512 is 512 x 4mV 2 048 volts Internal ADC reference When using the internal ADC reference the ADC range becomes 0 2 5 volts The analog input buffer ranges are not affected by the internal ADC range See the notes above on the analog input ranges The range of the DAC is unaffected by the ADC reference and remains 0 to 4 095 volts 2 1 mV WM Analog Outputs 87C550 PWM Outputs The DS87C550 contains four independent 8 bit pulse width modulators For complete details see the DS87C550 data sheet PDF file and clic
30. HSM 550 Technical Reference Document Revision 0 6 Complete Reference to Using amp Programming the Dallas High Speed Micro Development System HSM 550 HSM 550 LIMITED WARRANTY The information in this manual is subject to change without notice and does not represent a commitment on the part of Systronix Inc Systronix Inc makes no warranty express or implied for the use or misuse of its products which are provided with the understanding that you the user will determine fitness for a particular application Systronix assumes no responsibility for any errors which may appear in this manual No part of this manual may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying and recording for any purpose other than the purchaser s personal use without the written permission of Systronix Inc Systronix reserves the right to revise this documentation and the software and hardware described herein or make any changes to the specifications of the product described herein at any time without obligation to notify any person of such revision or change TRADEMARKS Systronix is a registered trademark of Systronix Inc INT amp L and Intel are registered trademarks of Intel Corporation Microsoft and MS DOS are registered trademarks of Microsoft Corporation Systronix Inc 555 South 300 East 21 Salt Lake City UT 84111 TEL 801 534 1017 FAX 801 534 1019 Internet www systronix
31. HSM 550 Technical Reference July 13 1999 Systronix Inc lBl nterrupts and Timer Counter Inputs The Dallas 87C550 has 16 interrupt sources with three priority levels There are six external interrupts and ten internal ones Of the external interrupts interrupt 0 is the highest priority When the external interrupt pins are not being used in their special modes they can be used as general purpose I O pins For detailed interrupt information and all internal interrupt details please go to the DS87C550 data sheet External Interrupt Pins Interrupts used by HSM 550 peripherals INTO is used by the HSM 550 power failure warning PFW signal if JP25 is installed INT1 is used by the DS1284 clock and calendar INTA or INTB outputs if JP1 is installed INT2 and INT3 are routed through the normally connected jumpers JP15 and JP14 respectively If there is no SBX card present or it does not use interrupts INT2 and INT3 won t be driven by any part of the SBX hardware INT4 and 5 are not used by HSM 550 peripherals INTO P3 2 Active low edge or level sensitive External Power Failure Warning when the HSM 550 unregulated power input drops below approximately 6 volts Do not confuse this with the 87C550 internal PFW interrupt This should be the highest priority interrupt in your program Jumper JP25 is provided to control the PFW to INTO connection You must install a jumper to enable the external PFW interrupt INTO is also tied
32. M 550 devices will then also be driving your circuitry VCC and GND in Prototype Area We ve provided marked headers adjacent to the prototype area for easy VCC 5 volts and ground access In addition the top board layer in the prototype area is VCC All the exposed shiny diamonds on the top of the board in the prototype area are solder plated VCC attachment points The bottom board layer in the prototype area is ground All the exposed shiny diamonds on the bottom of the board in the prototype area are solder plated ground attachment points 34 550 Technical Reference July 13 1999 Systronix Inc DALLAS HIGH SPEED MICROCONTROLLERS The Dallas High Speed Microcontrollers HSMs are supersets of the venerable 8051 microcontroller Well over 100 million 8051s have been shipped and they are in use in everything from DNA replicators to blood glucose meters The HSM family is code compatible with the 8051 instruction set The HSM core architecture has been redesigned to offer faster execution while consuming less power 9 Speed Microcontroller Data Sheets A data book 15 available from Dallas Semiconductor Call them at 972 371 4000 or better yet get the data sheets today in PDF form at www dalsemi com There 1s also a HSM data sheet link from our web site at www systronix com Acrobat reader is free at www adobe com Datasheets from Systronix require Acrobat 4 0 or later to display all the Acrobat features such as highl
33. M from invalid write cycles during power up and power failure conditions Board reset occurs at 10 or 4 50 volts nominal An early Power Fail Warning interrupt occurs when the unregulated power input drops below 6 volts The NVRAM is forced into low power data retention mode when Vcc drops 5 and the controller is reset It is necessary that the system software not write to SRAM after the PFW interrupt The NVRAM data is maintained until its backup supply drops below 2 volts Lithium Battery The CR2032 lithium battery is sized to provide typically five years or more of current The lithium battery has a temperature range of 0 to 70 C Below 0 the battery will freeze and contents will be lost When the battery warms up it will again function and you can load a new program Although the battery will provide backup down to almost 2 0 volts it is a good idea to 26 HSM 550 Technical Reference July 13 1999 Systronix Inc replace the battery if its voltage at room temperature drops below 2 7 volts Any good grade of battery is acceptable Lithium CR2032 batteries are available from Systronix at most camera stores department stores and even many drugstores Test points and 4 are provided to measure the voltage across a 100 ohm resistor in series with the lithium battery With no external power source this voltage is typically less than 50 nV or a current of 500 pA to maintain the NVRAM With power on
34. Micro features Philips C552 programs may not execute as expected on the 0587 550 To run your loaded file move the HSM serial cable to COMO the default HSM 550 user serial port and press the HSM 550 RESET button The green RUN LED should light and your sample program will emit a repeating message to your terminal software screen Since the serial loader always uses HSM 550 COMI and generic 8051 code will always use HSM 550 COMO for serial I O you can leave both serial ports connected COMI to your PC to load the program to be tested and COMO to another port on your PC a different PC serial modem or other serial device which you are controlling That s it You should be up and running If you had problems check your PC serial port connection and refer to the troubleshooting portion of this technical reference 10 HSM 550 Technical Reference July 13 1999 Systronix Inc HSM 550 DETAILED DESCRIPTION Philosophy and Purpose of HSM 550 The Systronix HSM 550 is the first development system for the Dallas DS87C550 High Speed Micro with ADC and PWM Like our HSM KISS board HSM 550 is designed from the ground specifically for the Dallas High Speed Microcontroller HSM family There are some differences between generic 8051s and the HSMs Just plopping an HSM into an 8051 socket will probably not give you the best performance and will probably not even work at 22 Mhz or above These differences are detailed in a separate
35. NTO INT DOW DQ NIDU AUN gt N ANALOG INPUT RANGES NO JUMPER AVref to AVref JUMPER 1 2 AVref AVref to AVref JUMPER 2 3 0 to 2AVref ANA INPO ANA INP1 3 U12 A 1 2 TLC27M4 DIP NIDU AUN HEADER8X1 AVREF ANA INP2 OA1 ANA INP3 TLC27M4 DIP GNDA AVREF ANA INP4 18 U12 C gt 8 9 TLC27M4 DIP INP5 G NIDU AUN HEADER8X1 ANA INP6 OA5 13 TLC27M4 DIP INP7 5 7 6 TLC27M4 DIP GNDA GNDA 7 U15 C gt 8 9 TLC27M4 DIP Systronix Inc Proprietary Data Use and or disclosure is governed by the statement on the title page of this document NOTE OPAMPS USE VDD AND GNDA WHICH ARE ISOLATED FROM DIGITAL VCC AND DIGITAL GROUND VDD PIN 4 GND PIN 11 SYSTRONIX 555 SOU
36. R address This command lets you write any Special Function Register Timed Access Registers are supported and the loader performs that special access for you There are no restrictions so you can if you wish clobber the serial I O used to access the loader If this happens just reset the HSM 550 DS87C550 SFR locations and bit mappings are different from 8051 SFRs and from SFRs of other High Speed Micros Double check your SFR address from the DS87C550 data sheet RR address read the byte at the SFR address This command lets you read any Special Function Register Timed Access Registers are supported and the loader performs that special access for you WI address value write the byte to the internal data RAM address This command lets you write any internal data RAM location RI address read the byte at the internal data RAM address This command lets you read any internal data RAM location M exhaustive test of NVRAM page 0 NVRAM page 0 is xdata space in LOAD mode but becomes code space in RUN mode This command does not access I O space This command writes a series of patterns to memory and reads them back Errors are reported as they occur This tests all bits if memory with ones and zeros and will detect shorted address or data lines It doesn t help you find which lines are shorted however A address line test This command does not access I O space This command write a series of patterns to memory and reads them back a
37. SM 550 is the loader serial port To download a program to HSM 550 and communicate with the HSM 550 serial loader you need 550 Technical Reference July 13 1999 Systronix Inc any serial communications program such as Windows Hyperterminal You can use any computer not just a PC compatible as long as it supports RS232 communication To assemble a program for use on HSM 550 you need an 8051 assembler such as Systronix 51 assembler included with HSM 550 Or you can use any 8051 family development tool running on any computer platform of your choice as long as it generates a standard Intel HEX file Binary file loading is not supported by HSM 550 To understand the High Speed Microcontroller family you need the Dallas High Speed Microcontroller data sheets and application notes available from www systronix com www dalsemi com or by calling Dallas Semiconductor at 972 371 4000 We ve included the DS87C550 data sheet in PDF format on your HSM 550 disk HSM 550 Technical Reference July 13 1999 Systronix Inc HSM 550 Technical Reference July 13 1999 Systronix Inc Quick Start Step by Step What you need If you ve lost any of the accessories provided with HSM 550 replacements are available for a modest charge Call us at 801 534 1017 or email to HSM550_sales systronix com 1 2 3 4 5 6 7 5 550 board with the power cube included with all orders Serial c
38. TH 300 EAST SALT LAKE CITY UT USA 84111 TEL 1 801 534 1017 FAX 1019 WWW SYSTRONIX COM INFOGSYSTRONIX COM Title HSM550 DEVELOPMENT EVAL BOARD ANALOG INPUT BUFFERS Size Number Rev B A Date Fri Apr 30 1999 Drawn byB Boyes Filename hsm550a sch Sheet 6 DIGITAL m LTC1451CS8 0 4 096 VOLTS 5 U14 B 7 6 TLC27M4 DIP eo e T 1 mV PER COUNT RESOLUTION GNDA REF OUT IS 2 048 VOLTS 4 NUTA R21 1 5 x 100 LL TLC27M4 DIP STE R22 10k GNDA pes R23 8 5 lu 100 TLC27M4 DIP 6 1 zl N VR1 BOURNS 3362 10 K CCW CW CLOCKWISE INCREASES ONE TURN Rf SPARE 1 SPARE ANA INP1 SPARE ANA OUTO U14 D R27 1 R28 2 14 100 13 1k S LL Rin TLC27M4 DIP 1 SPARE ANA INPO ND DAC OUT HEADER8X1 VR2 BOURNS 3362 10 K CCW CW CLOCKWISE INCREASES ONE TURN Rf SIGNAL GAIN Rin Rf Rin MAX OUTPUT ABOUT 4V DEPENDS ON LOAD CLOCKWISE INCREASES GAIN AS SHOWN 1 TO 11 DAC OUT SPARE OPAMP I O NOTE OPAMPS USE VDD AND GNDA WHICH ARE ISOLATED FROM DIGITAL VCC AND DIGITAL GROUND VDD PIN 4 GND PIN 11 SYSTRONIX 555 SOUTH 300 EAST SALT LAKE CITY UT USA
39. a current of typically 300 nA flows into the lithium battery from the board s power supply This is normal and does not harm the battery Note that the battery must be installed in order to access the DS1284 clock and calendar Voltage Monitors The DS87C550 specifies 4 00 4 13 4 25 V minimum operating Vcc The HSM and DS5000 family power fail warning occurs at 4 25 4 38 4 50 min typ max Typical 5V components such as SRAMs are specified with 10 Vcc tolerance or 4 50 to 5 50 volts operating voltage In order for HSM 550 to function reliably all of its components must be operating properly not just the controller Therefore system operation must stop when Vcc is less than 4 5 volts HSM 550 uses a 5 supervisor chip whose reset threshold 15 4 50 volts minimum A 5 supervisor resets the entire HSM 550 system at 4 50 4 65 4 75 volts min typ max A 10 Vcc reset supervisor would allow more time to operate as power is failing but marginally violates the specification of the SRAM and other chips HSM 550 write protects the and resets the controller when Vcc drops to the reset threshhold of the supervisor chip To prevent a reset during a NVRAM write cycle the controller must stop writing to NVRAM before Vcc decreases to the reset threshhold Note that read cycles while power is failing are actually OK and will not corrupt NVRAM contents PFW Interrupt and System Shutdown Time To provide time for system shutdown we would like an
40. able to your PC you provide this or order our serial adapter kit and terminal software such as Windows95 HyperTerminal you provide this Systronix A51 assembler provided on HSM 550 disk or available at www systronix com Text editor which can save ASCII text Windows Notepad or Wordpad are OK Clip leads to connect the LED test point to a processor port pin Clip leads with a 025 square receptacle or a micro hook on each end are ideal We d like to include these with HSM 550 if we can find a good source at a reasonable price Jumpers to connect HSM 550 interrupts to the pushbuttons provided with HSM 550 DS87C550 data sheet provided on H8M 550 disk or available at www systronix com or www dalsemi com Step by Step Procedure 1 2 3 HSM 550 example files are in the self extracting archive HSM5_XMP EXE Copy this file to a working directory on your hard disk such as HSM and expand it by typing C HSM HSM5_XMP The files should expand without error messages If you get a corrupted file error message then the disk has probably been exposed to a strong magnetic field in shipment Try reading it on another computer The unzip in Norton File Manager or WinZip will also open this file If all of this fails your disk is toast The quickest way to get new files is to load a new copy from the HSM files area of our web site at www sysronix com or FTP it from ftp systronix com Connect the power cube to the HSM 550 P17 power jack Af
41. and displays the time since reset The complete DS1284 data sheet is included as a PDF file so we won t attempt to go into detail on using it here We ve added a detailed index so you can quickly locate specific areas of interest I SBX Mezzanine Connector The SBX connector is a well established simple mezzanine bus connector It s address space is limited but the interface is simple and low cost A variety of SBX boards are available from numerous vendors if you are looking for some start with a Web search Systronix SBX1 LCD and Keypad Board This SBX card is an easy way to add the most common digital I O to your system SBXI includes a 4x4 or 4x5 matric keypad decoder debouncer a parallel interface LCD connector LCD backlight control a buzzer 24 bits of bidirectional I O and a standard Opto 22 style 25x2 I O header Systronix SBX P Prototyping Board Coming soon this prototyping board is still in the concept stage E mail your suggestions to sbxp systronix com Using Other SBX Boards You should be able to simply plug them onto HSM 550 write the necessary firmware and go The I O space read and write commands RX and WX in the HSM 550 loader are very helpful in debugging your SBX interface Test out your idea manually or by sending a text file to the loader then write the same algorithm into a program and TP2 are included to tie 12V to the SBX connector if your card requires it You will need to provide
42. aud _ rate 16 Delay seconds This delay is most easily generated by incorporating a short software loop near the beginning of the serial port interrupt service routine For example Start of serial port interrupt service routine after software has determined that the interrupt was generated by the TI flag mov r0 Zdelay count sp delay djnz r0 sp delay Osc Frequen Where delay count i z baud rate 192 In general this delay will be very short having a minimal impact on software performance For a microcontroller operating at 11 0592 MHz with its serial port configured for 19200 baud the delay HSM 550 Technical Reference July 13 1999 Systronix Inc would be 3 25 ms resulting in a delay count of 03h 9 SCONO and SCONI cannot be modified while their respective transmitter circuitry is active This is most likely to be an issue when attempting to clear the RI flag during full duplex serial port activity This erratum applies to both serial ports Work Around This erratum can be overcome with two simple modifications First software should check the state of the RI after attempting to clear it If no transmit activity was in progress the bit will have been cleared and software can proceed If the bit was not cleared then the software should repeat the attempt until successful The following code fragment illustrates the procedure ri loop clr RI jb RI ri loop The
43. ble of contents generation 5 0 5 Added DS87C550 and 5 550 errata Made Quick Start a level 2 heading Added short section on 051284 clock and calendar 6 0 6 1999 06 25 replacing any WP fonts with generic ones WP fonts can neither be embedded in a PDF file nor loaded onto a Mac Table of Contents HSM 550 READ THISFIRS ES oc S eei poh oe heh ol ei aS ai es 1 Errata amp Anomalies in cin era hed ERA bi ERO RS UR Ue t UR cb rnit OUR E ox 1 HSM 550 PCB Rev 2i 3 paid SG atu aS qudd ql Roe odd aida Malone 1 SBX Card Covers Load Reset Switches 1 Write only I O Space Can t Verify 1 051284 shuts down if Lithium Battery gt 3 7 1 DS87C550 Controller Die Rev 2 Terminology in This 1 al 4 What You Need to Use HSM 550 4 Quick Start Step by Step mannaa eere D tef ei prede eoi me ele dup t ei wd 7 bimus MD nE a a E p A E AE RE EREE AT AR AEA E EA 7 Step by Step Procedure o eite aere Une ee end S 7 HSM 550 DETAILED DESCRIPTION 24279339322 D ed S y AERO dde 11 Philosophy and Purpose of HSM 550 11 HSM 550 Versions ssid dei de se RESET de P EA 11 50 EGat re3
44. com email info systronix com Copyright 1999 by Systronix Inc rights reserved printed June 25 1999 CREDITS and a BIT of RAMBLING FROM the AUTHOR This manual was created using Corel WordPerfect 8 0 on an NT4 workstation with 256 Mbytes DRAM I remember our first real Systronix computer an IBM PC AT with a 6 MHz 286 and 128 Kbytes of DRAM wow 3000 plus 700 for a 30 Mbyte hard disk It had a high resolution 720x400 Hercules graphic card with an amber AMDEK monitor Schematics and the HSM 550 circuit board were created with Accel EDA and Scott Kendall Prototype build and production managed by Jared Wyckoff Network Services by Christopher Robin Postscript output was obtained from an Apple LaserWriter IINT PDF output using Acrobat 4 0 Bruce Boyes Systronix Inc HSM 550 Technical Reference Systronix Inc Complete Solutions for Rapid Development of Embedded Control Systems Document Revisions 1 0 1 First version for HSM 550 rev A prototype boards Open or unfinished issues are identified by 2222 preceding a description of the issue 2 0 2 Extensive additions should be pretty much complete Need to have an overall view of the board with location of all jumpers called out so customers don t need to spend hours reading that tiny text looking for them 3 0 3 Corrections from Scott proofreading previous revision Changes to example description 4 0 4 Corrections to and cleanup of head styles and ta
45. d headers 120 KBytes NVRAM zero wait states Dual UARTs dual RS232 ports Pushbuttons high amp low levels and LEDs Powerful serial loader amp utility EPROM 6 18 VDC power input with low noise high efficiency switching regulator Generous prototyping area for SMT SOIC wide and narrow and through hole DIP SIP amp ZIP Optional keypads and LCDs Standard 100mm by 160mm size Real technical support included Latest info www systronix com or email to sales systronix com What are Dallas High Speed Microcontrollers Dallas High Speed Microcontrollers HSMs are high performance low power CMOS 8051 code compatibles with a radical new processor core HSMs complete an instruction cycle in only 4 clock periods instead of 12 Combine that 3X performance boost with clock speeds up to 33 MHz and you ve got an 8 3 MIP CMOS controller The DS87C550 includes five external interrupts an on board watchdog timer power fail interrupt dual UARTs dual data pointers built in ADC and power conservation options For data contact Dallas Semiconductor at 972 371 4000 or www dalsemi com or follow the links from www systronix com True 32 MHz Zero Wait State Performance The High Speed Micros require faster memory and I O circuitry and have much faster strobe slew rates HSM 550 is rigorously designed to meet all manufacturer s timing requirements over worst case temperature and power variations with
46. e 20 Other new features c a deberes o SER OR EATEN OR e 21 HSM 550 HARDWARE BK RA ebd RR C RARE ROC AR ER RE EO AR i 23 Controller or ICE Pod Installation 0 0 0 ccc e 23 Power Supply xs ssa e d A dte e ED ah ota ER dee Bead heals SUA gees 23 I O JMADDITI9 ee tea eot e noe OD afe de gh ib ee te fed ge e Rd 24 External Memory or Peripheral Devices 25 Recommended Peripheral 25 Protecting Processor Pins from Static or Under voltage 26 Testing HSM 550 After Adding Peripherals 26 HSM 550 Voltage Monitor Reset and Control 26 Battery ose Eee et epe e debeat ep EA e Ee ei age ac 26 Voltage Monitors cad prece ee vada d eA nde a 27 PFW Interrupt and System Shutdown Time 27 PFW Interrupt Routine Tips 2 0 0 0 0 e as 27 Interrupts and Timer Counter Inputs Ih 28 External Interrupt Pins une pd eso eR SERE RUSO Mee QE URS LEUR e 28 Interrupts used by HSM 550 peripherals 28 MINEO Si eg de Rd Resin ua NE EU RR SE Ru AQ RENE d e dca RAL RES s 28 ENVUT BS 3 o oerte ete eu T
47. e started using a power strip to turn both the board and the ICE on and off simultaneously Mi Power Supply The power input jack is 5 5 x 2 5 mm with center terminal positive and the sleeve negative The voltage regulator will accept supplies up to an absolute maximum of 24 VDC Power supply input voltages above 6 VDC are acceptable and up to a point about 9V DC will make the regulator more efficient The regulator will simply shut down if it is short circuited or overheats The regulator will start to drop out at about 5 5 volts typical Reset circuitry puts the board in a safe reset state if VCC drops to 4 5 volts If you provide your own power supply be sure it is a DC voltage of at least 6 volts Some wall cube power supplies are actually AC transformers and may damage the board HSM 550 ships with a 12 VDC 1000 mA power cube With an input voltage of 7 VDC HSM 550 draws 180 mA typical and with 6 VDC input 210 mA Current use is lower at higher input voltages because of the power conversion of the switching regulator Power Voltage X Current If you will be driving the board from a 12 VDC vehicle electrical system the input voltage will typically be 13 8 VDC HSM 550 includes reverse polarity and overvoltage protection The overvoltage typically clamps at 24 VDC HSM 550 is designed to be operated from a 6 volt or greater battery All the on board circuitry is relatively efficient The DS87C550 has numerous power conservation mode
48. e HSM controller you will need to buffer them or at least protect them against static or under voltage conditions before they leave HSM 550 Do not wire controller pins directly to a cable which drives a printer or other device Page 60 of the 1993 Dallas Soft Microcontroller Data Book shows a combination of schottky diodes and 1K ohm resistors to protect processor port pins from negative voltages Other application notes on pin protection are available from Dallas Semiconductor and Systronix Alternatively ICs are available with active clamping and current limiting One such device is the Texas Instruments TL7726 hex clamp As the name implies it has six inputs which provide protection for six I O lines It 1s intended to be used with an external current limiting resistor on each input Data sheets and application notes are available at the Texas Instruments web site www ti com Systronix stocks TL7726 in both DIP8 and SOIC8 packages Testing HSM 550 After Adding Peripherals The loader M and commands provide memory and address line tests respectively It s a good idea to run these after you add peripherals to your HSM 550 to verify that you haven t shorted address or data lines to power ground or each other Of course if the shorts are really bad the test won t run at all So check your work as you go and run the test as you add each component 15 550 Voltage Monitor Reset and NVRAM Control On board circuitry protects the NVRA
49. e Lithium battery should be good for five years at room temperature High moisture or conductive atmosphere such as salt spray will increase battery leakage Replace with a CR2032 3V battery when the voltage is less than 2 5 volts Don t overload the Lithium battery output in the prototype area Use ONERR to print the error value to the serial port or blink an LED with a pattern so that you know when a runtime error occurred Warranty HSM 550 is warranteed against defects in manufacturing for a period of one year This does not include damage due to static driving controller I O pins beyond their design limits see the DS87C550 data sheet for pin specifications or other damage caused by improper use Systronix is not liable for latent bugs if any in micro controllers In the case of a defective controller or processor such as the infamous Intel floating point bug we will honor all manufacturer s warranties and make every reasonable effort to keep your system up and running PLEASE CONTACT US before you return your board We do charge a minimum service fee on boards which are returned without authorization and check out to be operating fine So please save us both some possible aggravation and contact us first We ll do our best to get you up and running right away If you need to return your board you need an RMA return merchandise authorization If you 40 HSM 550 Technical Reference July 13 1999 Systronix Inc
50. early power failure interrupt Ideally we should monitor the voltage prior to the on board regulator The power failure warning interrupt built into the 87C550 may never be triggered since its threshold 4 25 4 38 4 50 min typ max is below a 5 Vcc reset threshold and identical to a 10 threshold Therefore HSM 550 s reset circuitry will be triggered before the 87C550 s internal reset circuitry The 87C550 s built in PFW interrupt has another limitation it can only monitor Vcc since it is internally connected to the controller s power pin The supervisor used in HSM 550 monitors the unregulated DC input and emits a PFW interrupt when the unregulated power input falls below about 6 volts depending on load This provides plenty of time for shutdown since at this early state regulated Vcc is still at its nominal 5 volt value PFW Interrupt Routine Tips The exact amount of time available between the PFW interrupt and a controller reset depends on several factors component tolerances temperature power supply capacitance both pre and post regulator and the total current consumption of your system To be absolutely safe your PFW interrupt code should not perform any critical writes to the NVRAM Finally verify that your routine completes well before the worst case Vcc reset threshold You can use an oscilloscope to monitor the time at which your PFW routine drives an I O device and the time at which the controller reset signal occurs 27
51. ede dee teen ete ee ceder deg eta Ane 39 za qusdam Ru iesu Gon a eo ded es uina e 40 HSNUSSU SCHEMATIC Spices eg RR AC a o DOR ce EI RA e ROG RA C e ce I CR AQ A ER CAD Ri 43 iii HSM S30 1999 June 02 Early Production Release SYSTRONIX Dallas 87 550 High Speed Microcontroller Rapid Development amp Prototyping System The new HSM 550 is a ready to use DS87C550 development system Powerful Dallas High Speed Microcontroller core with 10 bit ADC and 8 or 16 bit PWM Plus 12 bit DAC analog buffers clock amp calendar and more Notice the blue SBX expansion connector and generous prototype area Develop with the new 87C550 High Speed Microcontroller 8 MIPs 120 KBytes NVRAM ADC PWM RS232 MicroLan SBX Prototype area Only 249 Rev up your development with a warp speed 8051 core on board ADC DAC PWM and more HSM 550 features eight channels of 10 bit ADC one 12 bit DAC four channels of PWM and analog signal conditioning True zero wait state performance Easy program loading from a PC serial port Dallas MicroLan iButton port for low cost remote sensing amp control Includes the new Systronix RADS1 8051 assembler and development environment Device drivers and example programs with source code are included 74 4 EET mmm All processor ports brought out to clearly labelle
52. ere are load errors the loader will tell you as they occur It s tempting to jump into a complex application right off the bat but please run one of the supplied sample programs first This will verify that your PC cable hardware and installed software are all working together If you are using assembly code we ve included example files HELLO33 HEX DS1820 HEX and others along with the ASM source code Check our web site www systronix com for other samples For a quick test of your system load the HELLO33 HEX file This program continuously prints hello from COMX to both UARTS assuming a 33 MHz crystal HELLO22 HELLO14 are versions for 22 1184 and 14 7456 MHz respectively There are many differences between DS87C550 and other 8051s In particular common Special Function Registers SFRs and the interrupt vector table are different Why you ask and rightly so Dallas had to do this to be upwardly compatible with the Philips C552 Why did Philips do this in the first place We don t know for certain but we suspect temporary insanity The bottom line is that typical 8051 programs will not run correctly on the DS87C550 so don t try loading generic 8051 programs even simple hello world programs the interrupt vectors are 9 8 9 HSM 550 Technical Reference July 13 1999 Systronix Inc different until you ve modified them to work on the 87C550 Also because of the added High Speed
53. f the load is error free the loader will issue an response The loader always uses x on x off flow control when echoing the file 1 e you can pace the output from the loader Give the loader the L command then send a HEX file as standard ASCII text do not use protocols such as zmodem In HyperTerminal this means using the Transfer gt Send Text File menus D start end dump intel HEX file Send the contents of NVRAM page 0 the RUN mode code page to the serial port in HEX file format beginning at address start and proceeding through address end If no addresses are provided dumps all of page 0 V verify Intel HEX file Tells the loader to await reception of an Intel HEX file to be compared to those addresses in NVRAM page 0 After you enter the V command send a HEX file just as if you were using the load command T toggle Intel HEX file echo Causes the loader to echo all incoming HEX files back out the serial port so that you can see it as it s being received The echo persists until you enter the T command again or reset the loader 18 HSM 550 Technical Reference July 13 1999 Systronix Inc toggle interrupt test This is not just a loader command it is also interrupt vector code contained within the loader If you trigger an external interrupt while the loader is active and interrupt test 1s enabled the loader will emit a message to HSM 550 COMI This is useful for veri
54. fying that your interrupt hardware is working correctly or for testing the pushbuttons on HSM 550 interrupts are assigned the same priority level This feature is only available in LOAD mode and does not in any way affect your program s interrupts in RUN mode An interesting test is to jumper enable multiple interrupts When you press the button all jumpered interrupts will be asserted at the exact same time This 15 a good test case for interrupt handling code Serial loader interrupt code handles each interrupt in order of its priority No interrupts are lost Try it Then change the interrupt priority with an appropriate WR command and try it again C start end calculate CRC 16 Calculate a 16 bit Cyclic Redundancy Code over the range of NVRAM page 0 addresses If no addresses are provided calculates over all of the page E erase NVRAM page 0 Erase all of NVRAM page 0 to the value FF except for I O space NVRAM page 0 is xdata space in LOAD mode but becomes code space in RUN mode value start end fill NVRAM page 0 Fill NVRAM page 0 with the value provided except for I O space If no addresses are provided fills all of the page NVRAM page 0 15 xdata space in LOAD mode but becomes code space in RUN mode You must provide a fill value or the loader will emit an error message without performing any filling G get microcontroller port values and display them Left to right the loader will display Port 0 Port 1
55. grated Development Environment IDE and 805 1 family assembler Requires Windows 95 98 NT How do order Please refer to our Product Matrix amp Price List and Order Form available on our web site for detailed option and ordering information Our web site will always have the newest information on released products Or call us SBX1 LCD and Keypad Option This feature packed SBX board includes a 16 pin latching header for an LCD 4x5 keypad decoder 24 bits of bidirectional I O capable of sinking 150 mA anda piezo buzzer The digital I O header is a standard Opto 22 type 25x2 for easy industrial I O buffering Price preliminary subject to change HSM 550 249 single 239 2 price on higher quantities SBX 1 LCD keypad and I O board SBX Proto board with decoder strobe PLD SYSTRONIX 555 South 300 East 21 Salt Lake City Utah USA 84111 Tel 1 801 534 1017 Fax 1 801 534 1019 www systronix com TECHNICAL DETAILS Microcontroller Socketed PLCC68 Dallas DS87C550 33 MHz with a32 MHz crystal All ports are presented on labelled headers Memory 60 KBytes of code and 60 KBytes of data in NVRAM 4 KByte I O space Replacable lithium battery Power Unregulated 6 18 VDC input from a 5 5x2 5 mm jack Efficient switching regulator is reverse polarity short circuit and over temperature protected 5V 500 mA available for user Four layer board with isolated analog power plane and pi filtered a
56. h S3 By placing jumpers on P2 you can connect one or more of the interrupt inputs to the pushbutton The ability to drive more than one interrupt input simultaneously helps debug interrupt conflicts If you aren t using the SBX interrupts many SBX cards don t there s no conflict with this pushbutton 28 HSM 550 Technical Reference July 13 1999 Systronix Inc Inputs The DS87C550 has eight analog inputs a single 10 bit analog to digital converter and internal or external reference options The HSM 550 board supplements this with eight op amp analog buffers and a precision 2 048 volt reference Analog Input Buffers amp Input Range Jumpers The analog buffers are implemented 8 in three quad Texas Instruments TLC27MA opamps The opamps are standard pinout DIP14 parts so you can easily change to another opamp 1 4 E i 2 29 4322 REF to VREF VREF for ADC is either 2 5 internal reference or 2 048 volts using HSM 550 external reference The analog buffers have jumper selected input ranges of 2 048 to Figure 7 Analog Input Range Jumpers The upper outline 2 048 0 to 2 048 or 0 to 4 096 selects Vref to Vref The lower outline selects 0 to 2xVref volts external ADC reference The jumper present selects a range of 0 to volts output of the analog buffers is designed to be always positive since the input range of the ADC is limited to pos
57. have a major credit card we can ship a replacement board at once without first receiving your old board back for evaluation 4l HSM 550 Technical Reference July 13 1999 Systronix Inc 42 __ _ _ G i G HSM 550 DEVELOPMENT EVAL BOARD REVISIONS REV OR ECO DATE DESCRIPTION 99 JAN 05 START OF SCH CAPTURE BASED ON ALC SCH AND HSM KISS 99 JAN 20 ADDING 1284 CLOCK AND CALENDAR ONE RS232 CHIP NO CS REGISTER LITHIUM BATTERY 99 JAN 24 DELETING DIGITAL I O OTHER CHANGES AFTER REVIEW ON 22 JAN TRY ADDING 2ND SBX 99 FEB 02 REFORMATED MADE READY FOR FIRST LAYOUT 99 FEB 19 SHEET 3 Added C51 C54 SHEET 4 Added C52 C53 SHEET 5 Renamed nets LEDO amp LED1 to LED3 L amp LEDA SHEET 7 Changed orientation of VR1 VR2 SHEET 8 Added note at P23 SHEET 10 Changed note at JP15 connected SBX connector ground pins to GND net SHEET 11 Added TP3 TP4 R25 99 APR 06 SHEET 3 Swapped signals connected to pins 1 amp 11 of U10 This returns the signals to their original assignments 99 APR 09 SHEET 4 Added P24 99 APR 15 SHEET 7 Added C55 SHEET 8 Added C56 99 APR 19 SHEET 11 Connected LOADPB L signal to the LOAD pushbutton ALL SHEETS Added legal notice 99 APR 21 SHEET 3 Corrected C5 value corrected R6 value added TP5 2 6 analog power supply note SHEET 7 Added analog power M y note SHEET 9 Added RP13 A amp RP13D unused 99 APR 21 Released to Manufac
58. he DS1284 tells if it should enter backup mode If Vbat is greater than 3 7 volts the DS1284 concludes that Vbat gt Vcc and it should enter battery backup mode Therefore if you replace the Lithium battery with source higher than 3 7 volts or the battery HSM 550 Technical Reference July 13 1999 Systronix Inc itself becomes overcharged you will not be able to access the DS1284 We encountered this in initial prototypes of HSM 550 in which the power control circuitry charged the Lithium battery with 100 uA This causes no harm but after about 200 power on hours Vbat reached 3 9 volts and the DS1284 could not be accessed Attempts to read a location such as FEXXH returned the value XX which is indicative of reading a floating data bus DS87C550 Controller Die Rev A3 Revision may be identified by date revision brand yywwA3 where yy and ww are the year and workweek of manufacture respectively This errata sheet is valid only when used in conjunction with the most current version of the data sheet available from Dallas Semiconductor via the Internet Changes from A2 to A3 were limited to manufacturability enhancements and no changes to device functionality or errata were made 1 The Stop mode current may be as high as 1 mA on some devices Work Around None This erratum will be fixed in future revisions of the device 2 Extended stretch MOVX instructions do not operate correctly when the MD2 MD1 and MDO b
59. ial version of either the loader or any of the PLDs We can design and produce hardware built to your specifications and have done so for a variety of small and large companies If you wish to use the loader or PLD in your own products we can provide programmed parts or a license to create your own at a very reasonable price We have in fact done so for several customers The serial loader and memory control PLD and their associated circuitry are copyrighted by Systronix Inc with all rights reserved Purchasing HSM 550 does not give you the right to duplicate either device la Systronix Web Site amp Forum Our web site www systronix com is the main repository for new HSM 550 example code and documentation There are links from the web site to an ftp file area You can also join a forum of Systronix users Our web site has information about the forum Getting Technical Support Our technical support is included with your purchase of HSM 550 We believe good support begins with good written documentation starting with what you re reading right now If you can t find the answer in our documentation then try the FAQ on the web at www systronix com send e mail to support systronix com call us at 801 534 1017 or Fax us at 801 534 1019 When you contact us please tell us about any errors or weaknesses in the documentation so that we can improve it in the next revision If you can please contact us by e mail first You can attach a
60. ighting I What s Different About the HSM Family Port 0 No Port 0 pullups are required or advised with the High Speed Microcontroller Family Port0 has special drivers which can tolerate up to 100 pF and meet the required high speed timing when Port 0 is used as the multiplexed address data bus AD 7 0 In the case of address to ALE setup this means charging or discharging this much capacitance in 11 nsec at 22 1184 Mhz Adding Port 0 pullups significantly degrades signal integrity on Port 0 causing more overshoot and undershoot and more noise during ALE transitions Memory Timing There is more to memory timing than this manual has space to discuss Overall memory system timing 15 a combination of memory device both SRAM and processor speed bus loading address latch and decode circuit timing These calculations can be quite complex and can trade off component speed versus cost and availability Memory timing application notes are available at the Dallas Semiconductor web site at www dalsemi com and there are also links to these from www systronix com Suffice it to say that at frequencies above 16 Mhz a faster Port 0 demultiplexing latch is required HSM 550 uses an AC573 This device can produce large switching currents into capacitive loads Low value series termination resistors are advisable on its outputs to avoid excessive overshoot For noise immunity this latch should use CMOS input thresholds never TTL
61. ilable The current revision of the circuit board is in the lower right top corner of the board HSM 550 is specifically designed to support the special I O features of the DS87C550 In particular H8M 550 has a low noise power supply with an additional PI filter for the analog circuitry HSM 550 is a four layer circuit board with split analog and digital planes We ve added low noise analog buffer circuits to the DS87C550 inputs and the Linear Technology 12 bit DAC output amp Anomalies HSM 550 PCB Rev A SBX Card Covers Load Reset Switches Load Reset switches unreachable if an SBX card is installed Oops Will be fixed in Rev B boards they will be moved to the right edge of the board below the battery Write only Space Can t Verify This is not exactly errata it s more of an unavoidable quirk The loader W command writes to memory or space using movx instruction It also attempts to verify what was written by reading at the same address This will find memory problems or some memory mapped 1 register problems However some memory mapped devices are write only or for other reasons don t allow you to read the same data you wrote In that case you ll see a loader warning about a verify failure That s the quirk any I O space verify failures may not be real depending on your specific I O device DS1284 shuts down if Lithium Battery gt 3 7 Volts This is not really an errata it s just the way t
62. ile 18 V verify Intel HEX file uisa uctus hu a bcn d VR Alan e Ge ced cal 18 toggle Intel HEX file echo 18 I toggleinterrupttest seri irai eee ERA E a a 19 start end calculate CRC 16 2 0 cece eens 19 erase NVRAM page e ER Ene Dc dice a aaa oa dg 19 value start end 1 0 19 get microcontroller port values and display them 19 P valO val2 val3 put valueX to microcontroller portX 19 WX address value write the byte to the address in xdata space 19 RX address read the byte from the address in xdata space 19 WR address value write the byte to the SFR address 20 WI address value write the byte to the internal data RAM address 20 RI address read the byte at the internal data RAM address 20 M exhaustive test of NVRAM page Q 20 address line test crsa dun bused Ron esc d cs o ON e cut es ta 20 X value change movx stretch cycle value 20 WD write value to DAC HSM 550 20 S SIBDAtufe cu acreedores te de fer reet
63. itive inputs with respect to ground When using the DS87C550 internal reference the input range of the ADC changes but the range of the input buffers does not This is because the internal reference from the DS87C550 is not brought outside the controller However you could supply an AVREF of 2 5 volts by dividing analog VCC by two This would give buffer input ranges of 2 5 to 2 5 0 to 2 5 or 0 to 5 We don t recommend doing this because using a reference of VCC 2 is much less accurate and stable than a precision reference such as the 2 048 reference supplied on HSM 550 How much VCC 2 creates about a 5 bit reference which degrades the ADC to that same level The analog input buffer input ranges can be individually set for each input channel with jumpers JP6 JP13 29 HSM 550 Technical Reference July 13 1999 Systronix Inc ADC Reference Selection amp Reference Jumpers The 10 bit ADC built into the DS87C550 can use either a reference internal to the DS87C550 or an external reference This is controlled by the ADRS bit in SFR PWMADR at address D6H The internal HEADER 4X1 E reference 15 2 5 volts and 15 the GNDA B RO UPS default after a reset AVreft lt VDD JUMPERED GNDA AVref TOGETHER el AVref REF2048 external reference In addition the AVref lt GNDA external reference jumpers must be set on header P23 Or take the Setting ADRS to a 1 selects the jumpers off P23 and create your
64. its are configured for 10 or more machine cycles Lesser values will operate as described Work Around None This erratum will be fixed in future revisions of the device 3 External interrupts INT2 INT3 INT4 and INTS will not cause the device to exit Idle mode Work Around Use external interrupts 0 and 1 to exit Idle mode 4 The capture compare functions of Timer 2 will not operate in Idle mode Work Around None This erratum will be fixed in the next revision of the device 5 The processor may experience erratic operation if Stop mode is initiated when the device is operating in or 2 clock per machine cycle mode Work Around Switch to 4 clock per machine cycle mode CD1 CDO 10b before entering Stop mode 6 The analog to digital converter has an offset of approximately 5 LSb Work Around None This erratum will be fixed in the next revision of the device 7 Serial port status bits RB8 SCONO 2 and SCONI 2 and FE SCONO 7 and SCONI 7 can not be modified for at least 1 serial port clock period after being set by internal hardware The documentation implies that these bits can be modified at any time This erratum applies to both serial ports Work Around The incorporation of a software delay can ensure a successful modification of the above mentioned bits These bits are modified by internal hardware at the same time the RI bit is set prior to entering the serial port interrupt service routine After entering the interru
65. k on the Digital I O bookmark for Port 6 30 HSM 550 Technical Reference July 13 1999 Systronix Inc U3 D PWM CLKO IS FOR PWM OUTO amp 1 PORT 6 PWM_CLK1 IS FOR PWM OUT2 amp 3 P6 P6 4 PWMO P6 1 PWMOI P6 2 PWMO2 P6 3 PWMOJ P6 4 PWMCO P6 5 PWMCI P amp 7 STADC POKT 6 P0 J Ov Cn HEADER8X1 DS87C550 Figure 9 Header P6 PWM signals from MCU Port 6 The PWM outputs and the PWM clock signals are presented on header P6 If you don t need PWM functions you can use these Port 6 pins as generic 8051 I O pins Note that the ADC START input 15 also a Port 6 I O although it has nothing to do with PWM signals HSM 550 12 bit DAC HSM 550 includes a high quality Linear Technology LTC1451 12 bit SPARE ANA OUTI DAC The output of the DAC is buffered and presented on P8 SPARE ANA INP1 Header P8 also provides access to the spare opamp inputs and outputs SPARE ANA OUTO SPARE ANA INPO DAC OUT Designer opamp preferences are about as personal as political choices There s no real best We chose the TLC27MA because it has good single supply operation is low power has low input current and low temperature drift It drives very well to within a few millivolts of ground and up to 4 volts or so Heavily loaded it will drive to 3 5 volts so be aware of this limitation the rail to rai
66. l opamps we ve investigated have other shortcomings which we felt made them a less desirable choice in this application But if you disagree feel free to install your favorite opamp in the sockets we provided HEADERS8X1 Figure 10 Header P8 DAC output and available analog opamp input amp output 31 550 Technical Reference July 13 1999 Systronix Inc lAvailable OpAmp Gain Stages HSM 550 includes two available opamps wired as non inverting amplifers VR1 and VR2 set the gain from 1 to 11 VRI sets the gain for SPARE ANA OUTO and VR2 for SPARE ANA OUTI Clockwise rotation of the pot increases the gain Header P8 also provides access to these opamp inputs and outputs Dallas MicroLan iButton HSM 550 includes a simple interface to the Dallas One Wire network DOW net also called MicroLan This is similar to the iButton protocol with the difference that DOW devices are addressable and designed to allow multiple devices to share the same network wire HSM 550 includes a Dallas DS1820 temperature sensor An indexed PDF file data sheet is available from Systronix DS1820 Temperature Sensor The DOW net connector is an RJ11 type You can use standard telephone type RJ connectors and cable available from a variety of distributors Caution The DOW_DQ pin is tied directly to the DS87C550 P3 4 Exposure to static discharges could permanently destroy that pin on the processor You may want to add your own sta
67. nalog power Serial I O Two RS232 serial I O one for each UART Analog I O Eight channels of 10 bit ADC with op amp buffers Precision 2 048V reference Input range of each channel is jumper selectable 0 2 048 2 048 to 2 048 or 0 to 4 096 One channel of 12 bit analog output op amp buffered with a range of 0 4 096 volts resolution of 1 mV per count Two free opamps with adjustable gain of 1 to 11 Opamps are standard quad type in DIP sockets PWM and Capture Compare Four channels of 8 bit PWM can be cascaded to form dual 16 bit PWM Timer2 has multiple capture compare modes Digital I O The C550 s ports 4 5 and 6 are presented on labelled headers SBX cards provide additional I O options LEDs and Switches Two pushbuttons low and high levels and two LEDs are provided for experimentation The pushbuttons can drive one or more of the C550 s interrupts Clock amp Calendar DS 1284 with lithium battery also provides NVRAM backup Calendar or interval interrupts can be jumpered to the controller Expansion 8 bit SBX connector with up to 16 decoded addresses and two interrupts Dallas MicroLan iButton port for low costremote sensing amp control Memory mapped I O space is decoded at FAX XH and FBXX as are read and write strobes at FDXXH Easy Program Loading Serial program loading of HEX files initiated by on card pushbutton The auto bauding serial loader is only active in LOAD mode In RUN mode it is inactive giving y
68. nk capability on the driving source so can be driven by any port pin Microcontroller supervisor and reset circuitry with early Power Fail Warning interrupt to INTO can be isolated if you don t want PFW driving INTO Generous prototyping area for DIPs and also an SMT proto area Proto area has a power plane on the front side of the board and a ground plane on the back Multiple solder pads for power on the front and ground on the back make connecting your own chips quick and easy processor signals brought out to headers labeled on both sides of the board for easy wiring and probing Serial loader accepts Intel Hex files from any terminal communication program The serial loader 15 active only in LOAD mode In RUN mode it is mapped out of processor memory and does not use any processor resources Our serial loader is completely non intrusive Dallas MicroLan connector with on board DS1820 temperature sensor On board DS1284 clock and calendar with battery backup The DS1284 can generate periodic or calendar based interrupts Standard Euroboard 160x100 mm size conforms to ANSI IEEE Std 1101 1987 IEC 297 3 1984 and other international standards HSM 550 fits Systronix enclosures and many others 12 HSM 550 Technical Reference July 13 1999 Systronix Inc oader and PLD Options and Updates We are planning to add additional features in future releases and we welcome your input Please contact us if you would like a spec
69. ogic probe connect it to RXD1 Port1 6 This is labeled on the header P4 6 This signal is the serial input to the controller it is CMOS level and is not the RS232 voltage level At 19 2 kbaud bits are 52 usec wide so set the oscilloscope time base to 50 to 100 usec per division Now in load mode when you press your PC s Enter key you should see periodic characters on RXD1 This is your PC sending carriage returns to HSM 550 HSM should respond with a burst of characters on Port1 7 header P4 7 the controller TXD1 output These characters are the loader printing the opening prompt to HSM 550 COMI This verifies that the loader is receiving and sending serial information from to the RS232 level translator a You must push the load pushbutton and hold it for more than 500 msec to trigger load mode Each time you push the button in this manner and send the loader a carriage return character the loader should emit a brief burst of serial characters the opening prompt If you hold down the enter key the loader will continue to emit loader prompts If TXD1 stays high then for some reason the loader is not starting up 37 HSM 550 Technical Reference July 13 1999 Systronix Inc i Check board power at a VCC and GND test point Is it getting 5 volts 5 4 75 to 5 25 volts DC ii Is the ALE strobe oscillating This indicates the processor is operating If not is the crystal seated in its socket Absence of AL
70. omething like this the exact appearance will depend on your loader version 550 Loader Commands L load intel HEX file D start end dump HEX file V verify HEX file w memory T toggle HEX file echo I toggle all external interrupt enables C start end calc CRC 16 E erase xdata to F value start end fill xdata with value G get port values P 10 vall val2 val3 put valx to portx P except TXD1 RXD1 RD WR of Pl WX adr val write val to adr in xdata or I O space WI adr val write val to adr in internal data space WR adr val write val to adr in SFR space RX adr read at adr in xdata or I O space RI adr read at adr in internal data space RR adr read at adr in SFR space M Memory test with exhaustive patterns A Address line test X value show change movx stretch value 0 7 Press any key to continue WD val write val to system DAC 550 only Memory code 0000 EFFFH xdata 0000 EFFFH I O F000 FFFFH All values ar ntered and displayed in hexadecimal format memory errors display as address should be actual Loader has detected DS87C550 processor 550 7 Try sending one of the HEX files we ve included to HSM 550 To send a HEX file to HSM 550 type an for LOAD and send the HEX file from your terminal software If the loader receives the file with correct checksums you will get an response If th
71. ons If you are using 151 Pro please please take advantage of the 151 ONERR instruction to provide run time error handling Print the error code to the serial port so that you at least know what error occurred Quick Diagnosis Table HSM 550 QUICK DIAGNOSIS TABLE SYMPTOM EXPLANATION SOLUTION RUN and LOAD LEDs are both no power to HSM 550 check power cube center is positive off short in prototype area could be causing regulator shutdown No prompt from loader on PC no serial press and hold LOAD button RED LOAD LED communications from should be lit to confirm LOAD mode HSM 550 to your PC serial cable must be straight through is PC serial comm software properly configured You must send a carriage return to the loader to establish communications Start with 19200 baud added parts to prototype area Overloaded or shorted Ifloader won teven run beep out address and now operation of the loader is address data lines data lines look for shorts to each other orto erratic power or ground in the circuitry you ve added putin a faster crystal nowthe 33 MHz is the fastest Don tdothis HSM 550 will not run faster than 33 board doesn t work reliably crystal MHz putin a slower crystal now the Crystal may be The 8051 requires a parallel resonant board doesn t work reliably wrong cut or load fundamental mode crystal with about 18 capacitance for pF load capacitance Not all crystals
72. onship between load and run modes and NVRAM page access 16 HSM 550 Technical Reference July 13 1999 Systronix Inc HSM 550 Serial Loader Modes and Memory Access Reset Type Code Space Data Space LED Controller Hardware Power On pagel green hardreset hard reset ORES eE user program user data Reset Run NVRAM page0 NVRAM green hardreset hard reset Push button ____ user program user data Load Serial loader in page0 red hardreset hard reset Push button ROM temporarily mapped into data space for program load amp verify Reset Run Mode Power on reset resets the controller and causes execution to begin in the code page of the NVRAM The RESET push button also resets the controller and causes execution to begin in the code page of the NVRAM Load Program Mode Pressing and holding the LOAD push button resets the controller as the reset button does But if you continue to hold the load button down for a half second or so execution starts in the serial loader Using the Serial Loader amp Demonstrator Serial Loader Syntax Command Entry and Special Characters loader values must be provided in hexadecimal format without any special characters For example Off ff FF and OFF are valid values Oxff and OFFH are not and will be considered errors by the loader loader input is case insensitive Data ranges are not tested so you can enter
73. our program complete control ofall controller resources Size Standard 100x160 mm single Eurocard size hundreds of enclosures available some stocked by Systronix including RF shielded NEMA rated etc Environmental Commercial temperature 0 to 70 deg C Support amp Warranty Friendly technical support One year warranty against defects and fast turn around on repairs All systems include Printed user manual amp technical reference Wall cube power supply Systronix RADS51 assembler amp IDE for Windows 95 98 NT Sample programs in assembly code and Keil C HSM 550 Technical Reference July 13 1999 Systronix Inc HSM 550 READ THIS FIRST If you really hate reading manuals then go ahead and hook up the board HSM 550 COMI is used for program loading it s marked on the board silkscreen Use a straight thru serial cable not a null modem cable Run a simple terminal communications program such as Hyperterminal set for 19200 8 N 1 XON XOFF Send HSM 550 a carriage return usually by pressing the Enter key HSM 550 should respond with a logon screen If you get stuck come back here and or check the troubleshooting section or the FAQ at www systronix com Thank you for purchasing the High Speed Microcontroller HSM Dallas D 87C550 Development System HSM 550 was developed in conjunction with Dallas Semiconductor and customers like you to be the best DS87C550 development board ava
74. ourself and us time and aggravation and call us first We ll do our best to get you up and running right away If you need to return your board you need an RMA return merchandise authorization If you have a major credit card we can ship a replacement board at once without first receiving your old board back for evaluation Internet FAQ There is a FAQ Frequently Asked Questions on our web site It is updated on a regular basis Start Simple Start with a simple program get it working and then add complexity in modules Try to add new functions as subroutines which you can call or not call to easily isolate suspected problems Learning Assembly Code and Embedded Programming If you find a simple way to learn assembly code or embedded programming let us know We get asked how do I learn quite frequently Maybe in a few years there will really be such a science as Computer Science but at the moment starting a discussion about good design is a good way to start an argument This manual is not intended to teach you assembly code or good programming principles Here are a few good books Some of these may be hard to find good luck we don t stock them for that reason If your local big chain bookstore won t order them try a college bookstore or a smaller independently owned bookstore or search for the title on the Internet The Art of Embedded System Programming by Jack Ganssle published by Academic Press This one should
75. output OK you say maybe that s cool but where s the tricky part Here it is you can prepare an ASCII text file with these commands one per line Then send the file to HSM 550 In Hyperterminal it s Transfer gt Send Text File You will need to set the File gt Properties gt Settings gt ASCII Setup gt Line Delay to 500 or 1000 msec to give the loader time to process the command If your communications software supports macros or scripts so much the better We ve included some sample files we use with Hyperterminal More are on the web site This is a simple and powerful way to test register settings before you take the time to create a program It s much easier to debug a DS87C550 configuration problem at the loader command line than within a program We use this approach a lot in our own test and debug work here That s why we took the trouble to add these features to the loader we thought you d find them useful too Serial Loader Command Description loader on line help This command causes the loader to emit several lines of command help L Load Intel HEX file This command tells the loader to await reception of an Intel HEX file and upon it s reception to load it into NVRAM page 0 In RUN mode NVRAM page 0 then becomes the code page and will cause your HEX file to execute Errors are reported as they occur The incoming file is not echoed to the serial port unless the T command has been given prior to the L command I
76. pt service routine incorporate the following delay based on the serial port baud rate before modifying the bit s 2 550 Technical Reference July 13 1999 Systronix Inc 1 baud rate 16 Delay seconds This delay 15 most easily generated by incorporating a short software loop near the beginning of the serial port interrupt service routine For example Start of serial port interrupt service routine after software has determined that the interrupt was generated by the RI flag mov r0 count sp delay djnz r0 sp delay Osc Frequenc Where delay count q y baud rate 192 In general this delay will be very short having a minimal impact on software performance For a microcontroller operating at 11 0592 MHz with its serial port configured for 19200 baud the delay would be 3 25 ms resulting in a delay count of 03h 8 SBUFO and SBUFI cannot be modified for at least 1 serial port clock period after their respective TI bits are set by internal hardware The documentation implies that these bits can be modified at any time This erratum applies to both serial ports Work Around The incorporation of a software delay at the start of the interrupt service routine ensures a successful loading of the above mentioned registers After entering the interrupt service routine incorporate the following delay based on the serial port baud rate before modifying the TI bit 1 b
77. r hard disk Invoke A51 With a Batch File Instead of typing a long command line to invoke A51 use our batch file ASM BAT Just invoke the batch file followed by the ASM file which you wish to assemble C HSM A51 HELLO Here s the contents of ASM BAT 1 is the filename you pass to batch file on the command line Echo off Echo assembling 1 asm with A51 abl 1 asm o 1 hex 1 51 Detailed documentation for the DOS assembler A51 is available in a PDF file on your HSM 550 disk ll nstalling and Using the Windows RAD51 IDE amp Assembler RADS1 requires 32 bit Windows such as Windows 95 98 or NT 4 0 or later It is not compatible with Windows 3 X and also may not work correctly with NT 3 X RADSI installs with it s own setup exe install program Online documentation for the assembler is included 14 HSM 550 Technical Reference July 13 1999 Systronix Inc HSM 550 LOADER DEMONSTRATOR It s tempting to jump into a complex application right off the bat but please run one of the supplied sample programs first This will verify that your PC cable hardware and installed software are all working together and that you understand the complete download process Most of the problems people have getting started are serial cable or PC serial communications related So be sure your PC serial port is properly connected and configured We test every HSM 550 and it s serial port is quite rugged so
78. ram loading and testing High Speed designed for use at up to 33 MHz with no data stretch cycles In order to run at full speed the Dallas HSMs have special needs compared to generic 16 MHz 8051s HSM 550 has been designed specifically for the HSM family Accept no substitutes 20 4 rh 5 5 550 Versions HSM 550 is available only in a 33 MHz version You can change to a slower crystal if you wish sure to use a parallel resonant crystal designed for 18 20 pF load capacitors Systronix stocks such crystals in 33 0000 22 1184 14 7456 and 11 0592 MHz versions Check our web site for special offers or special bundled versions of HSM 550 We also offer 11 HSM 550 Technical Reference July 13 1999 Systronix Inc aggressive quantity and educational discounts MHSM 550 Features 5 PLCC68 socket for DS87C550 High Speed Microcontroller or In Circuit Emulator 10 bit ADC 8 channels with opamp buffers and selectable input range 0 2 048 2 048 or 0 4 096 volts 12 bit DAC 1 channel range 0 4 095 volts 1 mV per count Two available non inverting opamps with gain continuously adjustable from 1 11 Precision 2 048 volt reference used by ADC and DAC Low noise and low temperature coefficient LinCMOS opamps on all ADC inputs and the DAC output Opamps are standard DIP14 quad packages in sockets Feel free to try opamps of other manufacturers or opamps which meet yo
79. re 28 Y v cid diy aH at AU sue esa te cde 28 oi M ETHER 29 Analog Input Buffers Input Range Jumpers 29 ADC Reference Selection amp Reference Jumpers 30 Analog I O ADC and DAC Counts 0 cee ence teens 30 Extemal ADC reference 3 i052 nc tattle edge Cede eb pd eee 30 Internal ADC reference ee 30 Analog Outputs oit ve etie ARP IE eU ES 30 87 C550 PWM Outputs loses eade d e ES eec ean 30 ESM OO 12bit DAC lata ire aig ek teda eod oO dd are UR ta a Eq dia quia ames 31 Available OpAmp Gain Stages 8 8 32 Dallas MicroLb n AAB tton ade ghd tanta gid bonded aus Beg ine Seren 32 DS1820 Temperature Sensor 1 0 cee er 32 DS1284 Clock and Calendar 1 0 gt a 32 SBX Mezzanine he re 33 Systronix SBX1 LCD and Keypad Board 33 Systronix SBX P Prototyping Board 0 ccc cen ene n enn 33 Using Other SBX Boards emie nerna ien ere ie e e a e e a 33 Using and Modifying HSM 550 I O and the Prototype Area 33 ED ae oes ou uen Se Ios Be eased
80. s We may offer a special low power version with zero power PLDs let us know if you re interested in this 23 HSM 550 Technical Reference July 13 1999 Systronix Inc Mapping HSM 550 uses memory mapped I O to support on board memory mapped peripherals the SBX connector and your own prototype area devices PLD U10 is the memory mapped 1 decoder HSM 550 reserves 4 Kbytes of external data space for memory mapped I O at address FXXXH FFFFH The PLD uses address lines A6 A11 plus a decode of FXXX A12 A15 from PLD U5 The result of all this 1s that I O space is decoded into some 256 byte blocks such as FEXX and some 128 byte blocks such as FC8X FCFX Some peripherals such as the DS1284 clock and calendar need a 256 byte I O space while others such as the SBX connector require less The serial loader RX and WX commands will read and write this I O space As far as the controller is concerned there is no difference between external data memory and external data I O Hence the term memory mapped I O On the other hand serial loader program space commands such as erase and fill commands and memory and address tests will not write into this reserved I O space The HSM 550 PLD US provides a decode of FXX XH asserted low You can use this FXXXH signal as an input into an additional PLD which will decode the I O space further HSM 550 PLD U10 used this decode plus A6 A11 ALE and RD and WR to provide the I O decodes
81. second condition avoids the possibility of a receiver overrun while waiting to write to SCON This is easily remedied by adding a character pacing requirement to the incoming data stream Specifically the following time delay should be inserted between characters in the incoming data stream to avoid a receiver overrun during the preceding code example Delay seconds baud rate The same effect can be achieved by configuring the transmitter to send 2 stop bits per character Ia Terminology in This Manual We use a fixed pitch font to represent what you see or type on your PC C NHSM550NASM BLINK We use the pointing hand to call attention to something worthy of special note such as a common pitfall or interesting feature of HSM 550 What You Need to Use HSM 550 To power up the HSM 550 board you need a 6 12 VDC unregulated source such as the Systronix 5003 6VDC 800mA power cube or heavy duty 5007 12VDC 1000 mA power cube If you use your own cube be sure the center terminal of the 5 5 x 2 5 mm jack is positive 6 to 12 volts DC The sleeve is negative An AC power cube could damage 550 To connect HSM 550 to your PC serial port you need a straight through cable from your PC to a DB9 female to mate with the DB9 male on HSM 550 Systronix 9210 serial adapter kit contains a 6 2 meter DB9 extension cable a DB9 to DB25 adapter and DB25 and DB9 gender changers DO NOT USE A NULL MODEM CABLE COMI of H
82. t locations calculated by walking a 1 across the value of the memory address Errors are reported as they occur This test is good for detecting shorted address lines For example 1f you get errors at locations 1000 and 4000 then A12 and A14 are shorted together X value change movx stretch cycle value This command changes the value of the controller s movx stretch cycle register The movx stretch cycle is similar to wait states in a microprocessor memory cycle After a reset the value defaults to 1 It can be anything from 0 no stretch cycles to 7 for the slowest write cycle Any change to the value persists until the next board reset It applies to all movx cycles including memory test and I O access HSM 550 is designed to support a stretch cycle value of 0 in all write accesses to on board data memory If you add peripherals to the prototype area you may need to use a slower write cycle when you access them Connect an oscilloscope to the WR strobe P3 6 on the Port3 header just below the processor Run the A address line test or M memory test Adjust the scope for a convenient display of pulse width Now enter the command X 0 to change the stretch cycles to zero Run the memory test again watch the oscilloscope and you can immediately observe the difference in write pulse width WD write value to DAC HSM 550 only This command is only available on systems which have a DAC the HSM 550 Meaningful values are 0 FFF
83. ter application of power the green RUN LED will be lit Press the LOAD switch and hold it for more than 300 msec The red LOAD LED should be on If neither LED is lit the board is not receiving power Check for proper power polarity the center of the P17 power jack is positive Connect a DB9 female straight not null modem cable from your PC serial port to HSM 550 COMI near the prototype area HSM 550 expects TXD on pin 2 and RXD on pin 3 of the serial port cable This sets up the PC as Data Teminal Equipment and H8M 550 as Data Communications Equipment in RS232 parlance A kit of adapters and a DB9 extension 550 Technical Reference July 13 1999 Systronix Inc cable is available from Systronix at 801 534 1017 2T Or www systronix com Settings 5 550 COMI is the added UART of the Dallas 87C550 and is used by the serial loader for Bits per second program loading HSM 550 COMO is the normal UART available in most every 8051 and is not passis xi used at all by the serial loader HSM 550 must use E 0 md COMI for loading but you can use any available PC COM port 4 Start a terminal program such as Hyperterminal set Elow control xon X the communication parameters for the baud rate you desire typically 19 2 kbaud Set other Bestare Defaults communication parameters to direct connection not
84. through a modem 8 data bits no parity 1 stop bit Xon Xoff flow control A Hyperterminal dialog box is shown to the right Be sure to set the terminal software COM port to the correct port on your PC Save these settings Now open a connection in the terminal software usually with a connect command or button 5 Wait a second to give the terminal program time to establish the connection to HSM 550 Now press and hold the LOAD button for more than half a second When you release the button the red LED should remain lit If instead the green LED lights you need to hold the LOAD button longer before releasing it Now press your PC s ENTER key to give the loader a carriage return to use as its auto baud rate character Note that your board may have a factory test program left in it so don t be alarmed if it emits serial output in RUN mode even before you load any program of your own If your PC serial port is connected through a straight cable and RXD are not swapped and you press the LOAD button on HSM 550 and then press the ENTER key on your PC you should see the loader prompt It will look something like this The exact appearance may vary with your specific loader version Unified HSM HEX LOADER Rev D 04 4 08 99 C 1996 1999 SYSTRONIX INC Type for command help 550 Technical Reference July 13 1999 Systronix Inc 6 If you enter a question mark for help you should see s
85. tic protection to the DOW net We have included a simple 051820 test program in 2 Ned HEX form no source L code It supports reading V LOCAL TEMPERATURE the DS1820 It does not AND SERIAL NUMBER support reading multiple devices on a network vcd P5 A full featured DOW 2 network driver with source veq 1 bd DOW NET CONNECTOR code and technical support eS 5 will be available soon E from Systronix as a SZ ial product M REN DM Figure 11 Header P5 and U11 DOW net 051284 Clock and Calendar The DS1284 is a clock and calendar chip which operates on its own crystal independently of the DS87C550 controller The DS1284 15 backed up by the same lithium battery which preserves HSM 550 code and data memory The DS1284 is memory mapped at address FEXX The DS1284 can generate periodic or calendar based interrupts which can be jumpered to the DS87C550 interrupt input INT1 The 051284 also can generate an accurate 1 KHz square wave available on J2 The DS1284 includes some which is independent of all other HSM 550 32 HSM 550 Technical Reference July 13 1999 Systronix Inc memory This is a handy place to store constants or parameters which you do not want to be changed by frequent new program loads The HSM 550 is never cleared or filled by the loader We ve included a sample program 550 ECC ASM which reads
86. to jumper block P3 By default it is not connected to the Low Level pushbutton switch S4 By placing jumpers on P3 you can connect INTO and or INTI to the pushbutton The ability to drive more than one interrupt input simultaneously helps debug interrupt conflicts INT1 P3 3 Active low edge or level sensitive Interrupt output from DS1284 clock and calendar Jumper JP1 is provided to control which if any interrupt from DS1284 is connected to the 0587 550 The silkscreen on the board identifies one end as INTA and the other as INTB The center terminal of the 3 contact jumper goes to the DS87C550 INT1 input If no jumper is present no interrupt from the DS1284 is connected INT1 is also tied to jumper block P3 By default it is not connected to the Low Level pushbutton switch S4 By placing jumpers on P3 you can connect INTO and or INTI to the pushbutton The ability to drive more than one interrupt input simultaneously helps debug interrupt conflicts INT2 3 4 5 Edge sensitive rising falling or both INT2 and INT3 are tied through JP15 SBX Interrupt 0 DS87C550 INT2 and JP14 SBX Interrupt 1 DS87C550 INT3 These jumpers are normally closed by a trace on the bottom side of the board To disable this cut the trace You can then install a jumper block and a jumper if you later decide to re enable them INT2 3 4 5 are tied to jumper block P2 By default none of these inputs are connected to the High Level pushbutton switc
87. turing 99 MAY 03 SHEET 10 Corrected source reference for RST 99 JUN 21 Sheet 11 added 2N4403 to load circuit to reduce battery charging from MAX703 MR Systronix Inc Proprietary Information This document contains financial business scientific technical economic or engineering information subject to USC 8 1831 1839 Protection of Trade Secrets Disclosure to others use or copying without the express written authorization of Systronix Inc is strictly prohibited TAB LE F TE NTENTS Violation may result in criminal prosecution under 18 USC 1831 1839 or 18 USC 1905 SHEET TITLE Add silk screen to the back of PCB for ADC range jumpers Copyright 1999 Systronix Inc Unpublished Work All rights reserved REVISIONS NOTES SYSTRONIX MICROCONTROLLER REAL TIME CLOCK 555 SOUTH 300 EAST ANALOG INPUT BUFFERS SALT LAKE CITY UT USA 84111 DIGITAL TO ANALOG CONVERTER TEL 1 801 534 1017 FAX 1019 ANALOG TO DIGITAL CONVERTER WWW SYSTRONIX COM INFOGSYSTRONIX COM SERIAL SBX INTERFACE z POWER AND RESET Title HSM550 DEVELOPMENT EVAL BOARD REVISIONS 00 Size Number Rev B A 01 Date Mon Jun 21 1999 Drawn by B Boyes Filename hsm550a02 sch Sheet 1 pee uc Tl HEADERS HEADER FUNCTION MCU PORT 4 COMMENTS SEE MCU PORT TABLE SEE JUMPER TABLE MCU PORT 1 SEE MCU PORT TABLE DOW NET CONNECTOR PIN 3 DOW DQ PIN 4 GNDD PIN 5 NO
88. ur specific design requirements 128Kx8 NVRAM with 3V CR2032 Lithium battery backup divided into a 60 Kbyte code page and a 60 Kbyte data page Due to the memory mapped I O space and the way in which the loader accesses code memory the upper 4 Kbytes of the NVRAM are not available as either code or data Backup retains code and data for at least five years typical at room temperature without system power On board circuitry protects the NVRAM from invalid write cycles during power up and power failure conditions 4 Kbytes of memory mapped I O space that s why each page of the has 60 Kbytes usable out of of it s 64 Kbytes total On board auto bauding serial loader accepts a HEX file from UARTI Leaves UARTO untouched Use any terminal program to transfer the file Does not use DTR to trigger load mode Serial I O RS232 on UARTO and UARTI Early power fail interrupt provides time for orderly system shutdown On board high efficiency low noise switching regulator 6 12 VDC input 5 5x2 5 mm power jack The regulator can provide up to 500 mA at 5 volts for your use provided that you use a suitable input power source for the board Push button high drives one or more of INT2 INT3 INT4 OR INTS jumpers select Push button low drives one or more of INTO or INT1 jumpers select LEDs to indicate load red or run green status Two amber LED test points LED lights when point is driven low Requires less than 1 mA of low si
89. xed high order address lines A8 A15 MCU Port 2 are on header P21 These signals are all used to access memory on HSM 550 You can easily add external memory or peripheral devices to the prototype area address them with A0 A15 and strobe them with WR RD and PSEN Recommended Peripheral Addressing Many peripheral devices use 8 address data lines plus chip select and read and write strobes If all eight address lines are used inside the peripheral it will have a 256 byte address space Therefore 25 HSM 550 Technical Reference July 13 1999 Systronix Inc it s convenient to only decode the upper byte of the HSM s address into 256 byte I O blocks at FOXX FIXX F2XX FFXX You will want to decode your device chip select into this HSM 550 address space at F000H FFFFH to avoid conflicts with the HSM 550 We ve provided the address decodes in the table above If you wish you can further decode all 16 address bits down to a single byte address Be aware that adding more decoding slows down the timing of your chip select and will probably require stretch cycles when accessing that device The decodes we ve provided are done in high speed PLDs and do not require additional stretch cycles Create your own decoder PLD or ask about stock devices available from us Protecting Processor Pins from Static or Under voltage If you will be accessing machinery or equipment attached by cables to the address and data busses of th
90. your own 12V supply there 15 none on 550 Using and Modifying HSM 550 I O and the Prototype Area HSM 550 is notable chiefly for its analog I O We ve also provided some basic I O such as dual RS232 ports but you can easily modify these or add more to suit your needs LED Test Points T2 and T3 if driven low will cause LEDs D5 and D6 respectively to light Only 1 mA of sink capability is needed so these test points can be driven by a controller port pin 33 HSM 550 Technical Reference July 13 1999 Systronix Inc Adding other Serial I O There wasn t room on HSM 550 to provide the means to change the serial I O easily If you need additional serial I O or another type such as RS485 we recommend adding a UART such as the Philips 2691 available from Systronix to the prototype area Or plug on one of the available SBX cards with additional serial I O Or use an available converter from companies such as Black Box at www blackbox com on the existing HSM 550 serial ouput S3 and S4 Pushbuttons All interrupts are disconnected from the pushbuttons unless the P2 or P3 jumpers have shorting blocks installed If you aren t using the switches S3 and 54 for interrupts or even if you are you can connect them to devices in the prototype area Refer to the interrupt section for details Some interrupts may be driven by HSM 550 devices if you do wire them also into the switches and other prototype circuitry the HS

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