UM1079 User manual - STMicroelectronics
Contents
1. 1 2 3 4 x2 MC3 5 G 06Q 32768 manufacturer JFVNY e a C16 Cir 6 8pF Must be close to the Crystal A RB U8A 0 PAO 14 4 A PC15 PAT 15 gt 3 SB16 PC14 PA2 16 a 2 PC13 PAS 17 es BE 53 PC12 lt PA 20 pa 52 PC11 PA 21 pa EE 5i PC10 PA6 22 NS 40 PC9 LD3 PAZ 23 pa 39 PCS PE REJ 2211 PA8 41 DE 38 PC7 330 PAY 42 pa E 37 PC6 Grea PA10 43 pa 25 DCH PAI 44 pa Ta PC4 LD4 PA12 45 pi 11 PC3 PE ja 22 PA13 46 BE 10 PC2 60 PA14 49 PC1 Blue PA15 50 8 PCO B PBO 26 pp 2 ls PB1 27 Not Fitted PB2 28 MES 54 PBS 55 C21 l PB4 56 20p PBS 57 PB6 58 pp pe PB7 59 pp PHO CBC N JT amie PB8 61 6 PH1 GC OUT RD 220 C2 PETO 55 NRS di lt PB10 29 p PB12 33 H2 Saag 1 PHT gt PB13 34 de dem PB14 35 x RB Seg PHO gt PB15 36 MAN 510 pe A MOD B15SA2_MOS Say STM2L152RC8 D RZ V SB3 po 10K BOOTO Must be close to the Crystal VDD BOOT1 e VDD D E d e E 9 0 D S IMicroelectronics Title SIM32L DISCOVERY MCU NumberMB963 Rev C 1 P6 SCH Date 2 15 2013 Sed3 of 6 1 2 3 4 MS31851V1 6ZOLINN sonegwoyos 891119913 6 S ASH 68281001900 Figure 18 STM32L1 discovery LCD 2 3 S Microelectronics Title STV32L DISCOVERY LCD NumberMB 963 Rev C 1 P6 SCH Date 22. 5817 DY 5813 DM Y SB20 ec0000000000000050000000000H 1 Pin 1 of CN1 CN2 P1 and P2 connectors are identified by a square d DoclD018789 Rev 3 Hardware and layout SB100 NRST SB102 STM_RST SB101 SWO P1 connector SB14 IDD measurement JP1 IDD SB15 SB16 X2 crystal SB17 MCO SB18 SB20 X3 crystal MS19050V1 13 39 Hardware and layout UM1079 4 1 14 39 STM32L152RBT6 or STM32L152RCT6 microcontroller The STM32L152RBT6 ultra low power microcontroller features 128 Kbyte of Flash memory 16 Kbyte of RAM and 4 Kbyte of data EEPROM while the STM32L152RCT6 features 256 Kbyte of Flash memory 32 Kbyte of RAM and 8 Kbyte data of EEPROM Both devices embed RTC LCD timers USART I2C SPI ADC DAC and comparators Figure 5 STM32L152RBT6 or STM32L152RCT6 package STM32L152RBT6 or STM32L152RCT6 128 or 256 Kbytes of Flash memory 16 or 32 Kbytes of RAM 4 or 8 Kbytes of data EEPROM LQFP64 10 x 10 mm MS19051V2 This device provides the following benefits e Ultra low power proprietary 130 nm technology Speed and power consumption independent of MCU power supply and ultra low leakage e Ultra Low power design clock gating low power Flash with power off capability Reduced overall Run and Wait mode current consumption by turning off clocks of unused peripherals or Flash e Sub 1 pA hardware RTC and AWU system unit Ultra Low power modes for applications requesting r
3. Leer UM1079 YA life augmented User manual STM32L1 discovery kits STM32L DISCOVERY and 32L152CDISCOVERY Introduction The STM32L DISCOVERY order code STM32L DISCOVERY and the 32L152CDISCOVERY order code STM32L152C DISCO help you to discover the STM32L ultra low power features and to develop and share your applications The STM32L DISCOVERY and 32L152CDISCOVERY are based on an STM32L152RBT6 128 Kbytes of Flash memory and an STM32L152RCT6 256 Kbytes of Flash memory respectively They include an ST LINK V2 embedded debug tool interface LCD 24 segments 4 commons LEDs pushbuttons a linear touch sensor and four touchkeys In this document STM32L1 discovery refers both to the STM32L DISCOVERY and to the 32L152CDISCOVERY STM32L DISCOVERY and 32L152CDISCOVERY kits are functionally equivalent The difference is the internal Flash memory size 128 Kbytes or 256 Kbytes Figure 1 STM32L1 discovery board i www st com stm3 2115 2c discovery Leeg Ad 4 4 4 4 6 FA VDU a PCI pcia e bote J i pon P Yai las ka Ka Ge cc KC besi KN Lea kee Ka me Der oi Bumm ga ent a e Bill dai mmm T 3V Y PAIS vob Or RH Do H elvear Or Wi ir 204460 Qu Pe NE V a de M April 2013 DoclD018789 Rev 3 1 39 www st com Contents UM1079 Contents 1 Conventions 224264 ee ee EE dba 6 2 QUICK STAN ovas arado escri ur acd NN a 7 2 1 Getting Stated EE 7 2 2 System requirements 8 2 3 Develo
4. 1 18 39 UM1079 Using the ST LINK V2 to program debug the STM32L on board To program the STM32L on board simply plug in the two jumpers on CN3 as shown in Figure 9 in red but do not use the CN2 connector as that could disturb communication with the STM32L152 microcontroller of the STM32L1 discovery Figure 9 STM32L1 discovery connections image Pin 1 of CN2 SWD connector aaa som arty Mi TET calme a e F JE b i24 e e ei rn Bo nu TR Fee E ed 7 Wk Eer zi L E CR aia tah aaah Ti zu z k renmi stm cove AAA kok kk koko k P W CN3 jumpers ON MS19053V2 2 DoclD018789 Rev 3 UM1079 4 2 2 Note 2 Hardware and layout Using the ST LINK V2 to program debug an external STM32L application It is very easy to use the ST LINK V2 to program the STM32L on an external application Simply remove the 2 jumpers from CN3 as shown in Figure 10 and connect your application to the CN2 debug connector according to Table 5 SB100 must be OFF if you use CN2 pin 5 in your external application Table 5 Debug connector CN2 SWD AAA A VDD_TARGET VDD from application SWCLK SWD clock 008 CH Figure 10 ST Link connections image Pin 1 of CN2 SWD connector CN3 jumpers OFF EA Le P INTEN HATA T FE gp SEE e 4L aul E erg d IZ Ei j 20444 Has Fr one Bug G A 8 avo Y ki pase ful a Yi s pe E MS19058V2 DoclD018789 Re
5. SRPMSeOS SS oa 6 Functions executed when clicking B1 button 7 Device SUMMA a ki rra EE EE E E ben A 9 ls hor e EE E ITI T a E TR TI TL 17 Debug connector CN2 SWD e Rr n nn nn 19 Solder DAGES zaan aaa EET TET T PETRI ETT 24 LGD CONMCCHONS 0 60606 arse xu PESE Ee Eq NUELEGRRK E RE SCR EE CE ME da dd 27 MCU pin description versus board function eeseeseeeseuno 28 Document revision history 38 DoclD018789 Rev 3 er UM1079 List of figures List of figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 STM32L1 discovery board 2422202622504 errar seus adds da 1 Hardware block diagram 11 dEr se eed ane Ch Neo Bi sene dien Be wid de hbe SER waer 12 BOOM OYO AAA IEA A Lt A ei Dl eee 13 STM32L152RBT6 or STM32L152RCT6 package eeer ee 14 SIM32L152RBT6 block diagram 15 STM32L152RCT6 block diagram 16 Typical congulelOEi s on at dicem pac c oot e t6 he ord Rude ai 6 6 aate d one Ow Sa A A 17 STM32L1 discovery connections image ee eee ee 18 ST Link connections image 19 STM32L1 discovery Ipp measurement circuit es 22 STM32L1 discovery low Ipp range measurement timing diagram 23 LCD segment mapping ee m rrr 26 Uum WGISCOVEIY za nb one a ese Barat ob teken ae ehh
6. This configuration allows COM2 and COMS to be used as I O ports In this case the 2 LCD pins must not be plugged into the LCD socket To proceed with this configuration remove the LCD carefully slightly open the COM2 and COM3 pins pin 13 and pin 14 of the LCD then replug it in the socket Characteristics overview e 24segments and 4 commons e Drive method multiplexed 1 4 duty 1 3 bias e Operating voltage 3 V e Operating temperature 0 to 50 C e Connector 28 pin DIL 2 54 mm pitch Note When the LCD is plugged all I O ports listed in Table 7 are unavailable To use one of these as I O you must remove the LCD Figure 13 LCD segment mapping 1 2 3 9 DORAN OM NM A bi i Jo UA XN AN ine M iN w A F dd n B 7 ce es gt COLON 4 x 26 39 DoclD018789 Rev 3 Ly UM1079 2 Hardware and layout Table 7 LCD connections STM32L152 LC Name Pin coms om COM como Name IN ONE sam so a es een le scorn wm ees me s w s s rs en Ta v s s seen reef coms eme me nl ew toom ee ml f em e ee tow me ru amp ess ee nein so s ce ss DoclD018789 Rev 3 27 39 Extension connectors UM1079 5 Extension connectors The male headers P1 and P2 can connect the STM32L1 discovery to a standard prototyping wrapping board STM32L152 GPI Os are available on these connectors P1 and P2 can also be probed by an oscilloscope logical analyzer or
7. an ammeter between jumper pin 1 and pin 2 of JP1 For Ipp measurement to be performed by the MCU itself the circuit below is implemented on the STM32L1 discovery Solder bridges SB1 SB2 and SB14 must be closed and JP1 must be ON The low Ipp range procedure see Section 4 7 2 is recommended when the MCU is in low power mode and the Ipp current does not exceed 60 yA When the MCU operates in Run mode and can sink up to 30 mA use the high Ipp range procedure see Section 4 7 1 DoclD018789 Rev 3 21 39 Hardware and layout UM1079 Figure 11 STM32L1 discovery Ipp measurement circuit IDD Measure VDD MCU U5 a MAX9938FEUK U6 IDD Measurement gt vo Sec C GND VCC 74H1G66STR IDD_CNT_EN TA SB14 PC13 1 2 3 4 5 6 7 8 C15 R24 M74HC4060TTR 1nF 30K STS4DPF20L Oscillator freqiency 30KHz MS19054V 1 4 7 1 High lpp range mode In high Ipp range mode the Ipp current is measured using the operational amplifier MAX9938FEUK U5 connected to the 2 2 shunt resistor R21 In this case IDD_CNT_EN remains high during measurement so R22 remains in short circuit during the measurement because FET transistor 1 of U20 remains ON permanently 4 7 2 Low Ipp range mode In low Ipp range mode the operational amplifier MAX9938FEUK U5 is connected to the 1 KQ shunt resistor R22 controlled by FET transistor 1 of U20 In this case the counter 74HC4060 U3 enabled by IDD CNT EN manages the measurement timing according t
8. ds ese ee eee ee 31 SEI N T EENEG 32 ST LINK V2 SWD ONIY ww v wi ai eee aon enne a ee EIN ER REI koh be eee Peek EROS m we 33 32L152 6 DISCOVERY MGU 5 w d am ode tnum ube seem bee era duc 34 STM32L1 discovery CD 35 STM32L1 discovery lpp measurement 36 STM32L1 discovery linear touch sensor teuchkeys enen 37 DoclD018789 Rev 3 5 39 Conventions UM1079 1 Conventions Table 1 provides the definition of some conventions used in the present document Table 1 ON OFF conventions Jumper JP1 ON Jumper placed between pin 2 and 3 Jumper JP1 OFF Jumper placed between pin 1 and 2 Solder bridge SBx ON SBx connections closed by solder Solder bridge SBx OFF SBx connections left open 6 39 DoclD018789 Rev 3 Ly UM1079 Quick start 2 Quick start The STM32L1 discovery is a low cost and easy to use development kit to quickly evaluate and start a development with an STM32L ultra low power microcontroller Before installing and using the product please accept the Evaluation Product License Agreement from www st com stm32l1 discovery For more information on the STM32L1 discovery and for demonstration software visit www st com stm32l1 discovery 2 1 Getting started Follow the sequence below to configure the STM32L1 discovery board and launch the Discovery application 1 Check jumper positions on the board JP1 and CN3 must be ON Discovery selected see Figure 3 on page 12 2 Connect the STM32L1 discovery board to a PC w
9. features An STM32L152RBT6 128 Kbyte Flash memory 16 Kbyte RAM 4 Kbyte data EEPROM or STM32L152RCT6 256 Kbyte Flash memory 32 Kbyte RAM 8 Kbyte data EEPROM microcontroller in a 64 pin LQFP package On board ST LINK V2 with selection mode switch to use the kit as a standalone ST LINK V2 with SWD connector for programming and debugging Board power supply through USB bus or from an external 3 3 or 5 V supply voltage External application power supply 3 V and 5 V Ipp current measurement LCD DIP28 package 24segments 4 commons Four LEDs LD1 red green indicating USB communication LD2 red indicating that 3 3 V power supply is ON Two user LEDs LD3 green and LD4 blue Two pushbuttons user and reset One linear touch sensor and four touchkeys Extension header for LQFP64 l Os for quick connection to prototyping board and easy probing DoclD018789 Rev 3 Ly UM1079 Hardware and layout 4 Hardware and layout The STM32L DISCOVERY and 32L152CDISCOVERY are designed around an STM32L152RBT6 and STM32L152RCT6 respectively Both microcontrollers are packaged in an LQFP64 Figure 2 illustrates the connections between the STM32L152 microcontroller and its peripherals ST LINK V2 pushbutton LED LCD linear touch sensor touchkeys and connectors Figure 3 on page 12 and Figure 4 on page 13 help you to locate these features on the STM32L1 discovery kits Figure 2 Hardware block diagram Emb
10. 1 are connected to P1 X3 C21 C22 R30 must not be fitted SB18 20 X3 crystal X3 C21 C22 and R30 provide a clock as shown in Section 7 OFF Electrical schematics PHO PH1 are disconnected from P1 SB7 9 11 13 DEFAULT ES Reserved do not modify SB6 8 10 12 RESERVED E Reserved do not modify PAO PA4 PC13 are used by the Ipp measurement SB1 2 14 JP1 ON ai k PAO PA4 PC13 are available and IDD module cannot be OFF used JP1 OFF X2 C16 C17 and R28 deliver a 32 KHz clock SB15 16 PC14 PC15 are not connected to P1 X2 crystal PC14 PC15 are only connected to P1 Do not remove X2 C16 C17 R28 B2 Pushbutton is connected to the NRST pin of the SB5 STM32L152 MCU B2 RESET ofr B2 Pushbutton is not connected the NRST pin of the STM32L152 MCU SB4 ON B1 Pushbutton is connected to PAO B1 USER B1 Pushbutton is not connected to PAO SB21 ON Vpp is powered from 3 V SB22 must be OFF VDD powered from 3 V OFF Vpp is not powered from 3 V SB22 must be ON SB22 La Vpp is not powered by the CR2032 battery SB21 must be Battery enable ON Vppis powered by the CR2032 battery SB21 must be OFF is powered by the Vpp is powered by the CR2032 battery SB21 must be OFF battery SB21 must be OFF The NRST signal of the CN2 connector is connected to the NRST pin of the STM32L 152 MCU SB100 NRST The NRST signal of the CN2 connector is not connected to the NRST pin of the STM32L 15
11. 12 2013 Shed 4 of 6 4 MS31852V1 sonewoyos 2914199 3 6ZOLINN ASH 68281001900 6 9 Figure 19 STM32L1 discovery Ipp measurement 1 2 3 4 A IDD Measue VDD_MQ off on N 0 Q0 x EE us 5 MA X9938FEUK U6 IDD Measurenent 3 4 2 RB R9 A gt q VO on SB2 ED e 10K 013 0 J GND VCC 2 JvoD up B 2 199 1K 1 a 74H1G66STR Ge SA U7 74LXI GO4CTR VDD VDD li m U3 CH VDD az vec 8 Er CL EE RB 2 EN EE 10K IDD CN EN IDD WA KEUP EH o lt A Ge 6 11 814 PC13 gt em Q7 a U20 SB1 7 14 m M E NOOB sey EP RA Um 3 S i 6 M74HC4060TR a 4 5 30K G2 D2 STSADPF20 Oscillator frequency 30KHz 2 D S Microelectronics Title STM32L DISCOVERY IDD Measurement NumberMB963 Rev C 1 P6 SCH Date 2 12 2013 Shed5 of 1 2 3 4 MS31853V1 6ZOLINN sonegwoyos 891119913 6 ASH 68281001900 Figure 20 STM32L1 discovery linear touch sensor touchkeys 2 4 VDD S1 EDEN Side 3 pos A E E en GRP2 7GRPS GRP3 PAZ ei E E USER amp WAKE UP Button PC5 E a PB1 Sg B CZ C28 EE ech SLDER 3 P ositions um 8 100nF p e c ch A RES ET Button D S Microelectronics Title i STM32L DISCOVERY Linear
12. 2 MCU The SWO signal of the CN2 connector is connected to PB3 DE taom OFF The SWO signal is not connected No incidence on STM32F103C8T6 NRST signal 58102 STM ner L OFF Noineidenceon STM32F103CSTS NAST signal ON STM32F103C8T6 NRST signal is connected to GND 24 39 DoclD018789 Rev 3 Ly UM1079 Hardware and layout Table 6 Solder bridges continued The BOOTO signal of the STM32L152 MCU is held low through a 510 O pull down resistor SB3 BOOTO The BOOTO signal of the STM32L 152 MCU is held high through a 10 KO pull up resistor The BOOT1 signal of the STM32L 152 MCU is held high through a 10 KO pull up resistor SB19 BOOT1 The BOOT1 signal of the STM32L152 MCU is held low through a 510 O pull down resistor OFF STM32F103C8T6 MCO clock signal is not used 03C8T6 MCO clock STMS2F103C8T6 MCO clock signal is not used is not used SB17 MCO EG MCO clock signal is connected to OSC IN of the STM32L152 MCU Default SBx state is shown in bold 2 SB17 and SB20 are OFF to allow the user to choose between MCO and X3 crystal for clock source DoclD018789 Rev 3 25 39 d Hardware and layout UM1079 4 9 LCD 24 segments 4 commons This LCD allows the STM32L152 to display any information on six 14 segment digits and 4 bars using all COMs See the LCD segment mapping in Figure 18 and pin connections in Table 7 Note This LCD also supports six 8 segment digits by only using COMO and COM f
13. ARE NOT DESIGNED FOR SUCH USE THE PURCHASER SHALL USE PRODUCTS AT PURCHASER S SOLE RISK EVEN IF ST HAS BEEN INFORMED IN WRITING OF SUCH USAGE UNLESS A PRODUCT IS EXPRESSLY DESIGNATED BY ST AS BEING INTENDED FOR AUTOMOTIVE AUTOMOTIVE SAFETY OR MEDICAL INDUSTRY DOMAINS ACCORDING TO ST PRODUCT DESIGN SPECIFICATIONS PRODUCTS FORMALLY ESCC QML OR JAN QUALIFIED ARE DEEMED SUITABLE FOR USE IN AEROSPACE BY THE CORRESPONDING GOVERNMENTAL AGENCY Resale of ST products with provisions different from the statements and or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever any liability of ST ST and the ST logo are trademarks or registered trademarks of ST in various countries Information in this document supersedes and replaces all information previously supplied The ST logo is a registered trademark of STMicroelectronics All other names are the property of their respective owners 2013 STMicroelectronics All rights reserved STMicroelectronics group of companies Australia Belgium Brazil Canada China Czech Republic Finland France Germany Hong Kong India Israel Italy Japan Malaysia Malta Morocco Philippines Singapore Spain Sweden Switzerland United Kingdom United States of America www st com Ly DoclD018789 Rev 3 39 39
14. CK TRACEDO TRACED1 TRACED2 TRACED4 NY VDD 3 JTAG amp SW Trace Controller ETM V DDC ORE POWER in rtex Vss JTDI Cortex M3 CPU EEPROM 64 bit JTCK S WC LK EX J TMS S WDAT f max 32 MHz 256KB PROGRAM 1 E JTDO 8KB DATA Supply monitoring 7 SRAM 32K 4 NVIC GP DMA 7 channels KZ VDD 33 Bus Matrix 5M 5S OSC IN 9 VDDA XTAL OSC OSC OUT GP DMA2 5 channels 1 24 MHz AH BPCLK PLE APBPCLK HCLK FCLK a WD G 32K LA Supply Standby VDDA monitoring interface BOR Bgap VSSA IXTAL 32kHz OSC32 IN a XTAL 32kHz OSC32 OUT RTC OUT 8 q Backup interface i 9 VDD 33 PA 15 0 GPIO PORTA AA l M gt 4 PB 15 0 KIT GPIO PORT B c y TIMER2 TIT 4 Channels essai aran KA S gt wee K 4 channel 050 crane JC ee eor PE 15 0 CE cpio porte gt K Fars F RER ento EN crio porrn gt RX TX CTS RTS C em ran PF 15 0 KN sro porte gt SmartCard as AF RX TX CTS RTS P6115 0 LAZY crio ports CL Sy NO smartcard as AF EXT IT x 115AF Be wu et aa amen MOS I MIS O db SCK NSS as AF GEN sen A 4 di A spiajos KEEP MOSIMISO SCK NSS ws Ck MCK SD as AF RX TX CTS RTS ZN MOSI MISO S CK NSS WS CK S martCard as AF USAR T1 lt gt usa sram 5128 L gt S P 13 125 SEP MCK SD as AF USB SRA M 512B Kr gt i VDDA 40 AF x i 1201 VDDREF ADC es 12bit ADC Ir gt WinWATCH DOG KC gt aan as AF VssREF ADC i Temp sensor TIMER 6 i A TD UsB 2 0F
15. DC SMBAI TIM3 CH2 PB5 SPI1 MOSI COMP2 INP SEG5 LCD_SEG9 l2C1 SCL TIM4 CH1 DC SDA TIM4 CH2 TIM4_CH3 l2C1_SCL TIM4_CH4 l2C1_SDA I2C2 SCL USART3 TX PB11 IZC2 SDA USART3 RX TIM2 CH4 LCD SEG11 SPI2 NSS I2C2 SMBA USART3 CK LCD SEG 2 ADC IN18 COMP1 INP TIM10 CH1 JTDO JNTRST U U dad PB12 SPI2_SCK USART3_CTS LCD_SEG13 ADC_IN19 COMP1_INP TIM9_CH1 SPI2 MISO USART3 RT S LCD SEG14 ADC IN20 SEG10 26 COMP1_INP TIM9_CH2 PB13 PB14 SPI2_MOSI TIM1_CH3N PB15 LCD SEG1S ADC IN21 COMP1_INP TIM11_CH1 RTC_50_60Hz ADC IN10 LCD SEG18 COMP1_INP ADC_IN11 LCD_SEG19 COMP1_INP ADC_IN12 LCD_SEG20 DoclD018789 Rev 3 29 39 mea eer Extension connectors UM1079 Table 8 MCU pin description versus board function continued Alternate functions LQFP Linear 64 pin Touch LED swp osc Free Power UO supply num Sensor ADC_IN13 LCD_SEG21 COMP1_INP ADC_IN14 LCD_SEG22 COMP1_INP ADC_IN15 LCD_SEG23 COMP1_INP ESCH TIMS_CH1 LCD_SEG24 ra SEG18 PY en ra CH2 LCD SEG25 ss sects Io CIT XE enan TIM3 CHA LCD SEG27 lt Spoo USART3_TX LCD_SEG28 USART3_RX LCD_SEG2 PC11 9 LCD_SEG41 SEG23 LCD COM5 USART3 CK LCD SEGS PC12 0 LCD_SEG42 LCD_COM6 PC13 RTC_AF1 WKUP2 Ka OSC32 TIM3_ETR LCD_SEG31 LCD_SEG43 LCD_COM7 OSC_IN OSC_OUT 2 30 39 DoclD018789 Rev 3 UM1079 Mechanical drawing 6 Mechanical drawing Figure 14 STM32L1 discove
16. Remove both jumpers from CNS see Figure 10 4 Select the battery as power supply Two solutions are possible a Solder bridge Configure SB21 OFF and SB22 ON No header is required on JP2 b Jumper Configure SB21 and SB22 OFF Solder a header on JP2 identical to JP1 on the top side and set a jumper between VDD and VBAT to power the STM32L152 MCU In this configuration it is possible to power the STM32L from the board 3 V supply voltage by setting a jumper between VDD and 3V 5 Plug the CR2032 battery into CR1 holder You can now run the demonstration Warning Wrong solder bridge configuration can damage board components LEDs e LD1 COM LD1 default status is red LD1 turns to green to indicate that communications are in progress between the PC and the ST LINK V2 e LD2 PWR red LED indicates that the board is powered e User LD3 green LED is a user LED connected to the I O PB7 of the STM32L152 MCU e User LD4 blue LED is a user LED connected to the I O PB6 of the STM32L152 MCU DoclD018789 Rev 3 Ly UM1079 4 5 4 6 4 7 Note Hardware and layout Pushbuttons e B1USER User pushbutton connected to the I O PAO of the STM32L152 MCU e B2 RESET Pushbutton is used to RESET the STM32L152 MCU Linear touch sensor touchkeys To demonstrate touch sensing capabilities the STM32L1 discovery includes a linear touch sensor which can be used either as a 3 position linear touch sensor or as 4 touchkeys Both functionalit
17. S device TD Gee TIMER7 L gt USB_DM Cap sensing Z gt Px 12C 2 32 MHz General purpose timers SEGx LCD 8x40 2 Channels lt T gt TIMER9 demm NY E VDDA 1 channe LA Teno KO eum 12bit DAC 1 gt DAC OUT1 as AF 1 channel SDL MERL KIS EST gt 12bit DAC 2 1 gt DAC OUT2 as AF APB2 f A MS19482V4 UM1079 4 2 d Hardware and layout Embedded ST LINK V2 The ST LINK V2 programming and debugging tool is integrated on the STM32L1 discovery The embedded ST LINK V2 can be used in 2 different ways according to the jumper states see Table 4 on page 17 e Program debug the MCU on board e Program debug an MCU in an external application board using a cable connected to SWD connector CN2 The embedded ST LINK V2 supports only SWD for STM32 devices For information about debugging and programming features refer to user manual UM1075 which describes in detail all the ST LINK V2 features Figure 8 Typical configuration Hardware requirements USB cable type A to mini B computer with Windows 2000 XP Vista or 7 Development toolchain Altium TASKING VX Toolset Atollic TrueSTUDIO IAR EWARM Keil MDK ARM Table 4 Jumper states Both CN3 jumpers ON eu functions enabled for on board programming ST LINK V2 functions enabled for external application through BONN DA YON CN2 connector SWD supported DoclD018789 Rev 3 17 39 Hardware and layout 4 2
18. Sensor and Push Button NumberMB963 Rev C 1 P6 SCH Date 2 12 2013 Shed6 of 6 2 4 MS31854V 1 sonewoyos 2914199 3 GZOLNN Revision history UM1079 8 Revision history Table 9 Document revision history BELL GNE QNNM 10 May 2011 Initial release 54 June 2011 5 CERN Chapter 6 Mechanical drawing Modified Chapter 4 3 Power supply and power selection Added 32L152CDISCOVERY related features Updated STM32L DISCOVERY url Modified Section 2 2 System requirements Section 2 5 Order codes Section 4 1 STM32L152RBT6 or STM32L152RCT6 microcontroller Section 4 2 1 Using the ST LINK V2 to 19 Apr 2013 3 program debug the STM32L on board and Section 4 2 2 Using the ST LINK V2 to program debug an external STMS2L application Updated Figure 1 STM32L1 discovery board Figure 2 Hardware block diagram Figure 3 Top layout Figure 6 STM32L152RBT6 block diagram Figure 13 LCD segment mapping and all schematics in Section 7 Ly 38 39 DoclD018789 Rev 3 UM1079 Please Read Carefully Information in this document is provided solely in connection with ST products STMicroelectronics NV and its subsidiaries ST reserve the right to make changes corrections modifications or improvements to this document and the products and services described herein at any time without notice All ST products are sold pursuant to ST s terms and conditions of sale Purchasers are solely responsible for the choice selection and
19. edded ST LINK V2 STM32L152RBT6 STM32L152RCT6 Green LED B2 LD3 RST Blue LED B1 LD4 USER IDD Measurement Linear touch sensor touchkeys LCD 24 segments 4 commons MS19048V2 Ly DoclD018789 Rev 3 11 39 1 Hardware and layout LD1 COM CN2 SWD connector ST LINK V2 3V power supply input output LCD 24 segments SB1 2 IDD measurement JP1 IDD measurement STM32L152RBT6 or STM32L152RCT6 SB4 B1 USER B1 user button LD3 green LED Linear touch sensor touchkeys Figure 3 Top layout T c Mur T iag SC seo Sale 23 Si en Mu ZEN r i eg AUDIT 8 kW SE Lstm321152e discovery 0600000000 SSES CS mm AAA pra H MERA Y Az y on idd Measure JPL Aa SR D R26 R27 MB963 C 5 czo ERR ECG we Wer MONT Mn SIZE ees Nec ma pan jwe R33 R34 R35 Pin 1 of CN1 CN2 P1 and P2 connectors are identified by a square 12 39 DoclD018789 Rev 3 UM1079 LD2 PWR CN3 ST LINK DISCOVERY selector 5V power supply input output IDD module SB3 BOOTO JP2 3V VBAT selector optional not mounted SB5 B2 RESET B2 reset button LD4 blue LED MS19049V2 2 UM1079 SB6 SB8 SB10 SB12 reserved SB7 SB9 SB11 SB13 default P2 connector SB19 BOOT1 SB21 VDD powered from 3V SB22 Battery enable CR2032 battery holder optional Figure 4 Bottom layout B SB102 SB14 Wi 5B15 We 5816 DA
20. egular wake up e Up to 6 low power modes Suitable for many applications from complete switch off to continuous monitoring at ultra low frequency e Advanced and flexible clock system multiple internal and external clock sources Switch and adjust frequency and clock sources on the fly depending on application needs e Direct memory access on board up to 12 DMA channels Autonomy for peripherals independent from core can switch off Flash memory and CPU large current consumption contributors while keeping peripherals active e Ultra Low power and ultrasafe features POR PDR BOR PVD allowing integrated application safety and security e Unique identifier to enhance user data confidentiality reliability e Ultrafast wakeup from lowest consumption low power mode allowing fast switching from static and dynamic power modes e Analog functional down to 1 8 V and programming down to 1 65 V e Full functionality over the complete Vpp range For more information refer to the STM32L152RBT6 and STM32L152RCT6 datasheets available on ST website DoclD018789 Rev 3 Ly UM1079 Hardware and layout Figure 6 STM32L152RBT6 block diagram TRACECK TRACEDO TRACED1 TRACED2 TRACED3 JTAG amp SW Trace controller ETM NJT RST Cortex M3 CPU JT DI JT CK SWCLK JTMS SWDAT Y F max JTDO as AF 32 MHz Interface 16 KB GP DMA 7 channels AHBP CLK 4 AP BP CLK 4 HC LK 4 FC LK Supply monitoring NRST Power rese
21. electronics Title STM3L DISCOVERY NumberMB 963 Rev C 1 P6 SCH Date 2 15 2013 Shedi of 6 1 2 3 4 MS31849V1 GZO LINN sonegwoyos eou109 3 6E EE ASH 68281001900 Figure 16 ST LINK V2 SWD only TCK SWGL SWD T SWO D Board Ment PC13 9 l N l ED 3 5 S i Not Fitted a a Ps U2 SB7 SB6 GE H STM3F1 8C8B SIM JIK BRE SRR AEX SB9 T F520 Aa Aa li C9 C8 T Z S Ze SB11 SB10 vu NES VBAT S vop 2 sw sms SWDIO 3V 1 REN Header 6 22 iu q Dan PC14 JTMESW DIO R10 53 T SWO D5 D3 E bm RT c PC15 PA12 ki OSCH PA11 pnus OSCOUT PA10 TN udi ZAN den nox NRT PAQ VSA PAS ET VDDA PB15 NS PB14 ee SV SB102 SE Jumpers ON gt DI SCOVERY Stected 100 Jumpers OFF ST LINKSdected T SWDIO IN LD1 3V VDD li VBAT LD2 a EE e en CR20 2 Hober Not Fitted LD_B COLOR_CMS PWR D2 LD385M33R BAT OJFLM 5 CNI U5V U5V 5V 1 R8 1K5 BAT60JFLM a w ROTO USBDM IN BR RO M 10 USBDP S ie R7 00K SHEL 3V 5075BMR 05 SM i RE GE E OnE USB S IMicroelectronics S p Title STM32L DISOVERYST LINKV2 SWD only NumberMB963 Rev C 1 P6 SCH Date 2 12 2013 Sed2 of 6 1 2 3 4 MS31850V1 sonewoyos 2914199 3 6ZOLINN ASH 68281001900 GE VE Figure 17 32L152CDISCOVERY MCU
22. ies are illustrated in the demonstration software see Table 2 Functions executed when clicking B1 button on page 7 3 pairs of I O ports are assigned to the linear touch sensor touchkeys Each pair must belong to the same analog switch group e PA6 PA7 group 2 e PC4 PC5 group 9 e PBO PB1 group 3 To minimize the noise these pairs are dedicated to the linear touch sensor and the touchkeys and are not connected to external headers To design a touch sensing application refer to the following documentation and firmware e For details concerning I O ports refer to the STM32L152RBT6 or STM32L152RCT6 datasheet e For information on software development see DISCOVER application software on http www st com stm32l1 discovery e For more detail concerning touch sensing application design and layout refer to AN2869 Guidelines for designing touch sensing applications e STM32 touch sensing library available from http www st com stm3211 discovery Built in IDD measurement circuit The STM32L1 discovery built in Ipp measurement circuit allows the consumption of the STM32L152 to be measured and displayed on the LCD Glass while the MCU is in Run or low power modes e JP1 ON the STM32L152 is powered through the Ipp measurement circuit default e JP1 OFF the STM32L152 is directly powered Ipp measurement circuit is bypassed When jumper JP1 is removed the current consumption of the STM32L152 can be measured by connecting
23. ith a USB cable to power the board Red LED LD2 PWR and LD1 COM are then lit up 3 Function 1 is executed Each click on user button B1 changes the executed function as described in Table 2 on page 7 A 4 LED bar shows the function being performed 1 to 4 bars can be switched ON Depending on the function selected the voltage value the linear touch sensor position the touchkey status or the STM32L current consumption is displayed on the LCD Table 2 Functions executed when clicking B1 button LED LD34 Par Value displayed on LCD status ka and Voltage LD4 blink feo Measured STM32L Vpp voltage EN MEME Linear touch sensor position from 0 to 100 Touch sensing Status of the 4 touchkeys Ly DoclD018789 Rev 3 7 39 Quick start UM1079 Table 2 Functions executed when clicking B1 button continued LED Lp3 4 Par Value displayed on LCD status STM32L consumption measured in Run mode 4 MHz STM32L consumption measured in Sleep mode 4 MHz STM32L consumption measured in Run mode 32 KHz STM32L consumption measured in low power sleep mode 32 KHz STM32L current LD3 and consumption LD4 OFF STM32L consumption measured in Stop mode RTC ON measurement STM32L consumption measured in Stop mode RTC OFF STM32L consumption measured in Standby mode To study or modify the Discovery project related to this demonstration visit www st com stm32l1 discovery and follow the tutorial Discover the STM32L features down
24. load and execute programs proposed in the list of projects This site also contains examples from which you can develop your own applications 2 2 System requirements e Windows PC XP Vista 7 e USB type A to Mini B USB cable 2 3 Development toolchain supporting the STM32L1 discovery e Altium TASKING VX Toolset Atollic TrueSTUDIO e AR EWARM e KeilTM MDK ARM 2 4 Demonstration software The demonstration software is preloaded in the board Flash memory It uses the built in Ipp measurement feature of the STM32L1 discovery to automatically measure and display on the LCD the MCU consumption in Run and low power modes it also allows to demonstrate touch sensing functionalities such as linear touch sensor or touchkeys The latest versions of this demonstration source code and associated documentation can be downloaded from www st com stm32l1 discovery 8 39 DoclD018789 Rev 3 Ly UM1079 Quick start 2 5 Order codes To order the STM32L ultra low power discovery board refer to Table 3 Table 3 Device summary Board Part number Order code Description number marked on silkscreen STM32L DISCOVERY STM32L DISCOVERY Discovery kit based on STM32L152RBT6 MB963 B 32L152CDISCOVERY STM32L152C DISCO Discovery kit based on STM32L152RCT6 MB963 C 1 STM32L DISCOVERY is replaced by STM32L152C DISCO d DoclD018789 Rev 3 9 39 Features 3 10 39 UM1079 Features The STM32L1 discovery offers the following
25. measure the Ipp current corresponding to the low power mode stored in C13 Figure 12 STM32L1 discovery low Ipp range measurement timing diagram Clear U3 counter enabled U3 counter IDD Low power mode Wakeup measurement Run mode IDD_CNT_EN Q13 LOW_POWER_EN U20 pin 2 Q14 IDD_WAKEUP Q14 U7 pin 4 4 7 3 d MS19055V1 Islas Current measurement procedure In Low Ipp range mode the bias current of the operational amplifier input U5 pin 4 is not negligible compared to Ipp current typical Igjas is 240 nA To obtain a reliable STM32L152 lpp measurement it is mandatory to subtract the bias current from the low lpp current value since this current is not sunk by the MCU Igias is measured during production test and stored in the MCU data EEPROM The DISCOVER demonstration software uses this value to display the correct Ipp The procedure for Ipjas measurement implemented in the demonstration software is Power off the board disconnect the USB cable Set JP1 OFF Push down B1 USER button power on the board from the USB Wait at least 1 second before releasing B1 the LCD displays the Ipjas measurement Power off the board disconnect the USB cable Set JP1 ON The Ig as value is stored in data EEPROM The bias current is then subtracted from the Ipp measured in Ipp range mode oO a x DoclD018789 Rev 3 23 39 Hardware and layout UM1079 4 8 Solder bridges Table 6 Solder bridges PHO PH
26. o Figure 12 on page 23 Low Ipp range measurement principle The principle used to measure the consumption current when the STM32L152 is in low Ipp range mode is as follows 1 Configure ADC to measure voltage on the IDD Measurement pin Configure PAO to serve as wakeup pin Enter low Ipp range mode after setting IDD_CNT_EN PC13 signal low IDD_WAKEUP rising edge wakes up the MCU after around 300 ms Start ADC conversion as soon as possible after wakeup in order to measure the voltage corresponding to Low power mode on capacitor C13 6 Reset the counter by programming IDD_CNT_EN high in less than 150 ms after the wakeup to avoid the R22 1 KQ resistor being connected later in Run mode Sp A la I The measurement timing is given in Figure 12 In low lpp range mode the 1 KO resistor is connected when FET transistor 1 of U20 goes OFF after entering low Ipp range mode The 22 39 DoclD018789 Rev 3 Ly UM1079 Hardware and layout Q13 output of the counter allows connecting the 1 KQ resistor when the current Ipp becomes very low Figure 12 shows how the counter and FET transistor 1 of U20 ensure that 150 ms after IDD_CNT_EN falling edge the shunt resistor R22 is connected between VDD_MCU and the power supply to reduce the measurement range to 60 pA for the full scale Then after another 150 ms required for current stabilization R22 is shorted the Ipp measurement is stored in C13 and the MCU is woken up After wakeup the MCU can
27. pment toolchain supporting the STM32L1 discovery 8 2 4 Demonstration software 8 25 OMe CodeS A 9 3 WIER 10 4 Hardware and layout tl el L kk kk n n es 11 4 1 STM32L152RBT6 or STM32L152RCT6 microcontroller 14 4 2 Embedded GT UNK 17 4 2 1 Using the ST LINK V2 to program debug the STM32L on board 18 4 2 2 Using the ST LINK V2 to program debug an external SIMS2L application s s waren annen nne een 19 4 3 Power supply and power selection 0 0000 eee eee eee 20 4 4 LEDS case w ai dout tisi RE RI RERO UR ERN GRE HE sore RU REINO ER RR ee 20 4 5 PUSNOUNONG cas ou nennen RU eae ane ata Td 21 4 6 Linear touch sensor touchkeys llle 21 4 7 Built in IDD measurement circuit llle 21 4 7 1 High Ipp range mode 22 4 7 2 Low lpp range mode 1 1 es 22 4 7 3 Ibias Current measurement procedure 23 48 Solder bridges 24 4 9 LCD 24 segments 4 commons ne 26 5 Extension connectors airada arras dau seen 28 6 Mechanical drawing n n n nn n non non n non non n nan 31 7 Electrical schematics ne ne na na nn na nannan ann 32 2 39 DoclD018789 Rev 3 Ly UM1079 Contents 8 Revision history currar ano eee aes cea ars ewe ew be 38 Ly DoclD018789 Rev 3 3 39 List of tables UM1079 List of tables Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 4 39 ON OFF CONVENUONS sers 2e 6 455654558544 06 pesados bI
28. ry 5 72mm 45 72mm E N D Mm N vi vi CO 00 N N N N off ame N ow N E MB963 C E 00 00 LO LO 00 N N 00 00 y y 45 72mm Dmm Dmm 5 72mm MS31848V1 Ly DoclD018789 Rev 3 31 39 Electrical schematics Figure 15 STM32L1 discovery ASH 68281001900 G6E GE 1 2 3 4 ST INKSCHDOC IDD meauremeri SdhDoc U ST INK U Rwer IDD_CNT_EN TCK SWCK Vico g1 A IDD_WAKEIP TMS SVDIO PC13 WKUP2 o2 A IDD_Measurenent PC14 OSC32 IN 3 PC15 OSC32 OUT 04 e PHO OSC IN ds gt PH1 OSC OUT De NRST 7 PCO da PC1 LQFP64 U STM2L U LCD GH08172 PC2 STM L Sh Doc LCD GHO0812 S amp Doc PC3 VSSA VDDA PAO WKUP1 PAS COMO PAI Fae i P1 bessa EXT_Y P2 2 T EXT VY la A Iv al 2 2 PC13 PB9 3 5 PC14 PB8 l4 EE PCS T 5 7 PHO PB12 SEG12 BOOTO 6 g PH1 PB7 7 9 li PB6 8 oe PBS 9 Sol PCO PB4 10 o Pos E PD2 12 PC12 43 POT 12 PC10 45 C DATS 16 S PC7 SEG25 PA14 17 PATS n PA12 49 PA 11 20 PC11 SEG29 PA10 21 m aa PA8 23 PC9 E 24 PC8 25 PC7 2 PCG 128 li E U SIDER PB d 2 SU DER PB 8Doc Header 28 PA6 Rev C 1 Siksaeen upd e fa tte w ste www st cam stm321152c disoovery MCU repacemert by STM32152RCG6 D i a D S Micro
29. t BOR V REFINT EE En VR EF OUTPU T ad VSS A Em Power down De KS DS PC 15 0 LX De PE 1 SID eo Kaes COMP2 _IN AN PA 15 0 lt 77 gt PB 15 0 gt PD 15 0 AHB APB2 AHB APB1 MOSI MIS O SC K NS S as AF RX TX CTS RTS SmartCard as AF Guo 24AF A an alo V DDREF F max 32 MHz VSS REF ADC US B RAM 512 B K gt AP B2 General purpose timers BA SI C TIMERS 2 Channe Is Game Om kep 1 Channel Cool mm KA 1 Channel DoclD018789 Rev 3 tp E ke ms KD ow ke gt gt PO WER VOLT REG Vpp 71 65 V to 3 6 V Vss 128 KB Flash 4 KB data EEPROM OSC IN XTAL OSC FR 1 24 MHz IWDG Standby Standby interface XTAL32 kHz RTC AW U Backup register lt gt Backup interface S d LCD step up lt E converter VER TIM2 a 4 Ch an nels 5 TIM3 fa 4 Ch annels CE TIM4 KT gt 4 Channels RX TX CTS RTS Ia S martCa rd as AF alo dan RX TX CTS RTS SES S martC ard as AF 4 k MOSI MISO SCK NSS SP 12 lt gt ez 12C 1 deb OS C32 IN OS C32 OUT RTC AFIN gt RTC OUT RTC_TS RTC_TAMP SC L S DA as AF gt SCL SD A SMB us PMBus as AF lt a US B DP US B DM SEG LCD 8x4 0 4x44 Ki X Geseent DD A lt gt 12 bit DACH Steg DAC OUT1 as AF 12 bit DACH meg le DAC_OUT2 as AF Ai15687h 15 39 Hardware and layout UM1079 Figure 7 STM32L152RCT6 block diagram TRACE
30. use of the ST products and services described herein and ST assumes no liability whatsoever relating to the choice selection or use of the ST products and services described herein No license express or implied by estoppel or otherwise to any intellectual property rights is granted under this document If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein UNLESS OTHERWISE SET FORTH IN ST S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION OR INFRINGEMENT OF ANY PATENT COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT ST PRODUCTS ARE NOT AUTHORIZED FOR USE IN WEAPONS NOR ARE ST PRODUCTS DESIGNED OR AUTHORIZED FOR USE IN A SAFETY CRITICAL APPLICATIONS SUCH AS LIFE SUPPORTING ACTIVE IMPLANTED DEVICES OR SYSTEMS WITH PRODUCT FUNCTIONAL SAFETY REQUIREMENTS B AERONAUTIC APPLICATIONS C AUTOMOTIVE APPLICATIONS OR ENVIRONMENTS AND OR D AEROSPACE APPLICATIONS OR ENVIRONMENTS WHERE ST PRODUCTS
31. v 3 19 39 Hardware and layout UM1079 4 3 Note 4 4 20 39 Power supply and power selection The power supply is provided either by the host PC through the USB cable or by an external 5 V or 3 3 V power supply The D1 and D2 protection diodes allow the EXT_5V and EXT_3V pins to be used independently as input or output power supplies see Figure 3 on page 12 e EXT 5V and EXT 3V can be used as output power supplies when the application board is connected to pins P1 and P2 In this case the EXT_5V and EXT_3V pins deliver a 5 V or 3 V power supply and power consumption must be lower than 100 mA e EXT 5V and EXT 3V can also be used as input power supplies e g when the USB connector is not connected to the PC In this case the STM32L1 discovery board must be powered by a power supply unit or by auxiliary equipment complying with standard EN 60950 1 2006 A11 2009 and must be Safety Extra Low Voltage SELV with limited power capability Battery powered optional In addition the STM32L1 discovery board has been designed to run from a CR2032 standalone battery no connection with USB or other power supply is required By default no battery holder is mounted on the board and SB21 and SB22 are configured in their default state see Table 6 Solder bridges on page 24 Follow the procedure below to power the STM32L1 discovery from the battery 1 Solder a B7410AP2L battery holder from LOTES on CH1 2 Configure SB100 OFF 3
32. voltmeter Table 8 MCU pin description versus board function MCU pin Board function LQFP Linear Alternate functions 64pin me Touch LED SWD OSC A Weier num 9 Sensor pply EXT _ 1 3V EXT _ 5V BOOTO d DEC EC sa me WKUP1 USART2_CTS WAKE PAO ADC_INO TIM2_CH1_ETR PAO UP COMP1 INP USART2_RTS ADC_IN1 PA1 TIM2 CH2 LCD SEGO 1 SEGO COMP1_INP USART2_TX ADC_IN2 PA2 TIM2_CH3 TIM9_CH1 SEG1 LCD_SEG1 COMP1_INP USART2_RX ADC_IN3 PA3 TIM2_CH4 TIM9_CH2 LCD SEG2 COMP1 INP 2 ment SPI1_NSS USART2_CK PA4 ADC_IN4 DAC_OUT1 COMP1_INP SPI1_SCK ADC_IN5 DAC_OUT2 TIM2_CH1_ETR COMP1_ INP PAS NO CH de 00 N O C1 SPI1 MISO ADC IN6 TIM3 CH1 TIM1 BKIN LCD SEGS TIM10 CH1 COMP1 INP SPI1 MOSI ADC IN7 TIM3 CH2 TIM1 CHIN PAZ LCD SEG4 TIM11_CH1 PAT COMP1 INP USART1 CK MCO on usw ecco cow E con ii mem USART1_CTS USBDM USART1_RTS USBDP JTMS SWD 28 39 DoclD018789 Rev 3 PA6 n2 NO no Co NO CH N O al A 2 UM1079 Extension connectors Table 8 MCU pin description versus board function continued MCU pin Board function LQFP Linear Alternate functions 64 pin ae Touch LED SWD OSC KS eier num 9 Sensor PPly JTCK SW TIM2_CH1_ETR PA15 ADC_IN8 TIM3_CH3 LCD SEG5 COMP1 INP VREF OUT ADC IN9 TIM3 CHA LCD SEG6 COMP1 INP VREF OUT cit WO SPI1 SCK COMP2 SEG3 NM LCD SEG7 TIM3 CH1 PB4 SPI1 MIS O COMP2 INP LCD SEG 56 SEG4 10 8
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