MOD-EKG Electro cardiogram sensor with MSP430
Contents
1. E WOO r FLV S Yd AUOOL I yluod 1 1689 6 0 ELV LS 0 Sd la 1 I 0 Sd l I 9 cH 9 Sd d3H3A L J3HA AYUOOL I 0970 00 zooAq A a 1nOX FF oza rz I zssaa 6 r9 40 rdSNW wx inox GE I 00 5 d 3A38A De caxan OdXin zd NISAS LOYA ZY 2 9d 99 615 815 81 02 0 94 994 FF sod JS LaLe Cd O CVO LICVO SW S 9d Y 594 4 0 0 79 FF SUOISUS X J i EE DR A 00 E J Id 09 5 99 99 eme ex exo v40L L L 9 eI epe 1 9 5 gt 29x D o 6 EXE 2 8 829 01 Soe g 8 8 8 0191 FEAR PN TE d 622 5 EI me E Zz SS 4b MS IASA NE tec Q1T X3aWllO 239A C Y Y C C C C C f f C eee SY _ I I s q qs a q q d A 2 a SPEED E CER EE SS g Sa Sa s Sa s Iw wd BNI BN Ua KU m s ra m m re Mo 90909 1 0 09 J m m m k I v9 99 u PLAY bd LN ft LALAY ik CLAY bad oe CLAY ar S i ay ay2. MOD EKG development board Users Manual Petes Sen All boards produced by Olimex are ROHS compliant Revision Initial June 2011 Copyright c 2011 OLIMEX Ltd All rights reserved Page 1 INTRODUCTION MOD EKG is digital heart rate monitor based on TI s MSP430FG439 micro controller The heartbeat rate per minute is displayed on the LCD In addition the application outputs a digital data stream via an RS232 serial port to allow EKG waveform display on a PC The only way to do this is via board s UEXT connector where RS232 signals are leaded The connection between the PC and MOD EKG can be made by using our adapter MOD USB RS232 that converts the RS signals into USB signals and vice versa An electrocardiogram ECG also called an EKG is a graphic tracing of the voltage generated by the heart muscle during a heartbeat In this application the EKG waveform is used by the MCU to measure the heartbeat rate Because heart beat calculation is the major focus the electrodes are simplified to two connections one to a right hand and the other to the left hand BOARD FEATURES e Microcontroller MSP430FG439 e EKG amplifiers realized with INA321EA e JTAG connector for direct plug in MSP430 2x7 JTAG connector to provide power for the target board e UEXT connector so it can be connected to other board as heart beat monitor sensor board e LCD custom display e Lithium coin battery holder e Extension headers for all micro
3. 0 OP 2 lt Lalala Ow le y n K M NM y lt O O O O O PORT4 O 5 1m 12111111111111 1121111 0 NNR NJ Or un mee eeepc LED1 LED2 SW2 3V LI BAT Page POWER SUPPLY CIRCUIT MOD EKG can take power from 3V Lithium battery when switch BAT UEXT is in position BAT JTAG when jumper P IN is closed and P OUT is opened UEXT connector when switch BAT UEXT is in position UEXT The programmed board power consumption is about 3 4 mA with all peripherals enabled The power supply source depends on jumpers P IN and P OUT position and BAT UEXT switch position RESET CIRCUIT MOD EKG reset circuit includes R1 100k C1 10nF JTAG pin 11 and MSP430FG439 pin 74 RST NMI CLOCK CIRCUIT Quartz crystal Q1 32 768 kHz is connected to MSP430FG439 pin 8 XIN and pin 9 XOUT JUMPER DESCRIPTION P IN P OUT When this jumper is closed the board is power supplied by the standard JTAG pin 2 This is only possible when the consumption of the board is not very high which is typically the case with MSP430 microcontrollers If this jumper is open the board should be power supplied by another external source This jumper and P OUT should always be reversely open closed i e if P IN is closed P OUT should be open and vice versa Default state is opened When this jumper is closed
4. ANIONS A Z 1 L uod zLova 2 Tm 197 r r PNE pm PN T 7 9d Sd d cd Ld 1NOX NIX SS AY OD AY e ISSAQ 2 0 0 LNOcLX NICLX Page 5 MEMORY ORGANIZATION Memory Size 60KB Main interrupt vector Flash OFFFFh OFFEOh Main code memory Flash OFFFFh 01100 Information memory Size 256 Byte Flash 010FFh 01000 Boot memory Size 1KB ROM OFFFh 0 00 HAM Size 2KB O9FFh 0200h O1FFh 0100h OFFh 010h Peripherals 16 bit 8 bit OFh 00h 8 bit SFR Page 6 SCHEMATIC ep uloo xeulio MMM diu PIT XIWITO L102 2 LH9IHAdOO Ree SR ES dl Ee 5 1 ONION I I HONS PONEN Z SHEEP DED FSA SNES I ZNOJ d Dg og ele R e ai lt I KR VN Si l _ 6ZS OINOS Z Ed u 8S L bd um m i YXZNH YN 0 S 0OWIS L d LSZ vd _ _ L8S 031S 0 d 9S rd d 6S 1 85 0 OOWIS CS pu 1349 2 99126 LIN 1S y 9S OIWOS 03190 4089 11100 4 i S Ole ZWOO Sd SLVIES 9 bd ED
5. the board is power supplied not by the JTAG but from external source Then the JTAG has to synchronize with the working voltages which is done through this line This is especially important when debugging with JTAG This jumper and P IN should always be reversely open closed i e if P OUT is closed P IN should be open and vice versa Default state is closed Page 9 When jumper J1 is shorted in position 1 2 UEXT pin 3 is connected to MSP430FG439 pin 55 P2 4 UTXD0 signal UTXD0 When jumper J1 is shorted in position 2 3 UEXT pin 3 is connected to MSP430FG439 pin 54 P2 5 URXD0 signal URXDO Default state is shorted in position 2 3 J2 When jumper J2 is shorted in position 1 2 UEXT pin 4 is connected to MSP430FG439 pin 54 P2 5 URXD9O signal URXDO When 3 2 1 jumper J2 is shorted in position 2 3 UEXT pin 4 is connected to MSP430FG439 pin 55 P2 4 UTXD0O signal UTXDO0 Default state is shorted in position 2 3 Depending on jumpers J1 and J2 configuration the board can work in host or in device mode The default state of J1 and J2 is for device mode shorted in position 2 3 INPUT OUTPUT LED1 red connected MSP430FG439 pin 67 P1 0 TAO LED2 red connected MSP430FG439 pin 65 P1 2 TA1 User button with name SW1 connected to MSP430FG439 pin 59 P2 0 TA2 User button with name SW2 connected to MSP430FG439 pin 58 P2 1 TBO Power supply switch with name BAT UEXT when in positio
6. Time Single Channel Internal DMA 12 Bit A D Converter With Internal Reference Sample and Hold and Autoscan Feature Three Configurable Operational Amplifiers Dual 12 Bit D A Converters With Synchronization 16 Bit Timer A With Three Capture Compare Registers 16 Timer B With Three Capture Compare With Shadow Registers Comparator Serial Communication Interface USART Select Asynchronous UART or Synchronous SPI by Software Brownout Detector Page 3 Supply Voltage Supervisor Monitor With Programmable Level Detection Bootstrap Loader Serial Onboard Programming No External Programming Voltage Needed Programmable Code Protection by Security Fuse Integrated LCD Driver for Up to 128 Segments 60KB 256B Flash Memory 2KB RAM Page 4 BLOCK DIAGRAM 0 OC aol J eoepelu sdwy dO PON Ids XAN r Z L appen siis e iai jeuueuj DVL dnui lul y DD mopeys ynoumolg Spo LHYVN 81 8 5 Bey 33 LaM eae cVO 8cL L 1901 101 1 0 5 gu Jada o CU 1891011 3 LVO OVO OLYVSN 091 oiseg i cg Jeu BopuoieM lnpolN I uone nui3 ypiqede Auiqede ino 566 uoo O I 8 O 8 O 8 0 8 1014191 sjouueyo z sieuueuo zi ae aes A TOW O 8 0 8 18 21 118 21 _ 9 uod S yod 7 uod Hod
7. 0FG439 microcontroller MOD EKG DemoSoft IAR for MSP v 4 21 Page 15 ORDER CODE MOD EKG assembled and tested board How to order You can order to us directly or by any of our distributors Check our web www olimex com dev for more info Revision history Board s revision Rev B April 2011 Manual s revision Rev Initial June 2011 Page 16 Disclaimer 2011 Olimex Ltd All rights reserved Olimex logo and combinations thereof are registered trademarks of Olimex Ltd Other terms and product names may be trademarks of others The information in this document is provided in connection with Olimex products No license express or implied or otherwise to any intellectual property right is granted by this document or in connection with the sale of Olimex products Neither the whole nor any patt of the information contained in or the product described in this document may be adapted or reproduced in any material from except with the prior written permission of the copyright holder The product described in this document is subject to continuous development and improvements All particulars of the product and its use contained in this document are given by OLIMEX in good faith However all warranties implied or expressed including but not limited to implied warranties of merchantability or fitness for purpose are excluded This document is intended only to assist the reader in the use of the product OLIMEX Ltd sha
8. a qnem Ey ay Ea I anajun Soso L 05 X6 ILES 1 x BEBE I pons 111 1 AEE EE ERI I co I lddfS H3MOd 4 mcr ee RE E 7 zs PECORE CP Lope ovg UE UT QR B 1 i I S0LHS I sJoydue no Js ea OL LXaN aG I J ONTO imc Lo OOWIS 8 14 I I ONOS S I cd F Eee T i vL vid E ISH i zi Yo 6 OL oan sr e esoojeqsn I I I 0 1 SNI 5 9 Pah LX3nN I I MING zug I aL Y L l LINZ Z 401 I odi Z z L zu Ovir 1nO d 994 994 x Qua I uedo zxiNH 1 514 3 l 9d gt aom E V3IZEVNI zn 5 90 ODA LXAM AEE ODA OVI O NY 61H v9d 4000713 99 NI d M sil e M a SE ea A BOARD LAYOUT E P OUT amp e 2 Ke a ok ile NEST CHO N Nes Wo C QS LCD BAT UEXT HR1 IN J1 N F A 19 1 4 gt 90 3_ NX 1 I o
9. controller ports no connectors mounted on the board e Right and left hands contact electrodes HR1 and HR2 e Two status leds e Two user buttons e Switch between Battery and UEXT power supply e Based on Texas Instruments application note SLAA280a e FR 4 1 5 mm soldermask component print e Dimensions 76 20 x 71 12 mm 3 00 x 2 80 Page 2 ELECTROSTATIC WARNING The MOD EKG board 15 shipped in protective anti static packaging The board must not be subject to high electrostatic potentials General practice for working with static sensitive devices should be applied when working with this board BOARD USE REQUIREMENTS Cables The cable you will need depends on the programmer debugger you use If you use MSP430 JTAG TINY MSP430 JTAG TINY V2 or MSP430 JTAG ISO you will need USB A B cable If you use MSP430 JTAG you will need LPT cable Hardware Programmer Debugger MSP430 JTAG MSP430 JTAG TINY MSP430 JTAG TINY V2 MSP430 JTAG ISO or other compatible programming debugging tool PROCESSOR FEATURES MOD EKG board uses ultralow power microcontroller MSP430FG439 from Texas Instruments with these features Low Supply Voltage Range 1 8 V to 3 6 V Ultralow Power Consumption Active Mode 300 pA at 1 MHz 2 2 V Standby Mode 1 1 pA Off Mode RAM Retention 0 1 pA Five Power Saving Modes Wake Up From Standby Mode in Less Than 6 ps 16 Bit RISC Architecture 125 ns Instruction Cycle
10. ll not be liable for any loss or damage arising from the use of any information in this document or any error or omission in such information or any incorrect use of the product Page 17
11. n BAT the board is power supplied via 3V lithium battery when is in position UEXT the board is connected to other board with UEXT and is power supplied by the other board via UEXT connector LCD custom display Page 10 EXTERNAL CONNECTORS DESCRIPTION UEXT 2 4 6 8 10 12 44 Pin Signal Name Pin Signal Name Page 11 Not Connected GND 10 PORTI Signal Name Signal Name ON oO O ln Ojo PORT2 Signal Name Signal Name Or Ojo O Ojo ojoj e PORTS Signal Name Signal Name vO O 3 SOMIO 4 UCLKO um alo 0 us o oj Page 12 PORTS PORTS PORT REF Signal Name Signal Name VEREF VREF Page 13 MECHANICAL DIMENSIONS E a amp 8 eig E NI 1 LO NJ LW g Q NI 109 00 lt I o x co LO OI 76 20 mm 9 68 58 mm e 60 96 mm N 29 898 s 48 26 mm N 43 18 09000000000000000 39 26 mm N a 27 94 mm d AON X xX l 62 mm x B B 6 99 mm sete di dij E E E ET ON SI Sig Y N lt 92 00 0 co o LO ol vol IN Page 14 AVAILABLE DEMO SOFTWARE Demonstrates heart rate measuring using MSP43
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