Datasheet
Pinouts and pin description STM32L452xx
72/210 DocID029968 Rev 3
Port B
PB0 - TIM1_CH2N TIM3_CH3 - - SPI1_NSS
DFSDM1_
CKIN0
USART3_CK
PB1 - TIM1_CH3N TIM3_CH4 - - -
DFSDM1_
DATIN0
USART3_RTS_
DE
PB2 RTC_OUT LPTIM1_OUT - - I2C3_SMBA -
DFSDM1_
CKIN0
-
PB3
JTDO/
TRACESWO
TIM2_CH2 - - - SPI1_SCK SPI3_SCK
USART1_RTS_
DE
PB4 NJTRST - TIM3_CH1 - I2C3_SDA SPI1_MISO SPI3_MISO USART1_CTS
PB5 - LPTIM1_IN1 TIM3_CH2 CAN1_RX I2C1_SMBA SPI1_MOSI SPI3_MOSI USART1_CK
PB6 - LPTIM1_ETR - - I2C1_SCL I2C4_SCL - USART1_TX
PB7 - LPTIM1_IN2 - - I2C1_SDA I2C4_SDA - USART1_RX
PB8----I2C1_SCL---
PB9 - IR_OUT - - I2C1_SDA SPI2_NSS - -
PB10 - TIM2_CH3 - I2C4_SCL I2C2_SCL SPI2_SCK - USART3_TX
PB11 - TIM2_CH4 - I2C4_SDA I2C2_SDA - - USART3_RX
PB12 - TIM1_BKIN -
TIM1_BKIN_C
OMP2
I2C2_SMBA SPI2_NSS
DFSDM1_
DATIN1
USART3_CK
PB13 - TIM1_CH1N - - I2C2_SCL SPI2_SCK
DFSDM1_
CKIN1
USART3_CTS
PB14 - TIM1_CH2N - - I2C2_SDA SPI2_MISO
DFSDM1_
DATIN2
USART3_RTS_
DE
PB15 RTC_REFIN TIM1_CH3N - - - SPI2_MOSI
DFSDM1_
CKIN2
-
Table 17. Alternate function AF0 to AF7 (for AF8 to AF15 see Table 18) (continued)
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
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