Datasheet

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STM32L452xx Pinouts and pin description

DocID029968 Rev 3 71/210

Table 17. Alternate function AF0 to AF7 (for AF8 to AF15 see Table 18)

Port

AF0 AF1 AF2 AF3 AF4 AF5 AF6 AF7

SYS_AF

TIM1/TIM2

LPTIM1

I2C4/TIM1/

TIM2/TIM3

I2C4/USART2/

CAN1/TIM1

I2C1/I2C2/

I2C3/I2C4

SPI1/SPI2/I2C4

SPI3/DFSDM/

COMP1

USART1/

USART2/

USART3

Port A

PA0-TIM2_CH1-----USART2_CTS

PA1 - TIM2_CH2 - - I2C1_SMBA SPI1_SCK -

USART2_RTS_

PA2-TIM2_CH3-----USART2_TX

PA3-TIM2_CH4-----USART2_RX

PA4 - - - - - SPI1_NSS SPI3_NSS USART2_CK

PA5 - TIM2_CH1 TIM2_ETR - - SPI1_SCK

DFSDM1_

CKOUT

PA6 - TIM1_BKIN TIM3_CH1 - - SPI1_MISO COMP1_OUT USART3_CTS

PA7 - TIM1_CH1N TIM3_CH2 - I2C3_SCL SPI1_MOSI

DFSDM1_

DATIN0

PA8MCOTIM1_CH1----

DFSDM1_

CKIN1

USART1_CK

PA9 - TIM1_CH2 - - I2C1_SCL -

DFSDM1_

DATIN1

USART1_TX

PA10 - TIM1_CH3 - - I2C1_SDA - - USART1_RX

PA11 - TIM1_CH4 TIM1_BKIN2 - - SPI1_MISO COMP1_OUT USART1_CTS

PA12 - TIM1_ETR - - - SPI1_MOSI -

USART1_RTS_

PA13JTMS/SWDATIR_OUT------

PA14 JTCK/SWCLK LPTIM1_OUT - - I2C1_SMBA I2C4_SMBA - -

PA15 JTDI TIM2_CH1 TIM2_ETR USART2_RX - SPI1_NSS SPI3_NSS

USART3_RTS_

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