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ManualsBrandsSTMICROELECTRONICS ManualsDev KitsPCB design board

Hardware and layout UM1656

20/30 DocID025091 Rev 1

PA7

TIM3_CH2/TIM11_CH1/

SPI1_MOSI/LCD_SEG4/

ADC_IN7/COMP1_INP

/OPAMP2_VINM

23

24

PA8

USART1_CK/MCO/

LCD_COM0

41

25

PA9 USART1_TX/LCD_COM1 42 24

PA10 USART1_RX/LCD_COM2 43

23

PA11

USART1_CTS/USB_DM/

SPI1_MISO

44 22

PA12

USART1_RTS/USB_DP/

SPI1_MOSI

45

21

PA13 JTMS-SWDAT 46

SWDIO

420

PA14 JTCK-SWCLK 49

SWCLK

217

PA15

TIM2_CH1_ETR/SPI1_NSS

/SPI3_NSS/I2S3_WS/

LCD_SEG17

50

16

PB0

TIM3_CH3/LCD_SEG5/

ADC_IN8/COMP1_INP/

VREF_OUT/

OPAMP2_VOUT

26

27

PB1

TIM3_CH4/LCD_SEG6/

ADC_IN9/COMP1_INP/

VREF_OUT

27

28

PB2/BO

OT1

COMP1_INP 28 29

PB3

TIM2_CH2/SPI1_SCK/

SPI3_SCK/I2S3_CK/

LCD_SEG7/COMP2_INM

55

SWO

611

Table 5. MCU pin description versus board function (continued)

MCU pin Board function

Main

function

Alternate

functions

LQFP64

Push button

LED

SWD

OSC

Free I/O

Power supply

CN3

P1

P2