Datasheet

Pinouts and pin description STM32F031x4 STM32F031x6
32/106 DocID025743 Rev 6
Table 13. Alternate functions selected through GPIOB_AFR registers for port B
Pin name AF0 AF1 AF2 AF3
PB0 EVENTOUT TIM3_CH3 TIM1_CH2N - PB1 TIM14_CH1 TIM3_CH4 TIM1_CH3N - PB2---- PB3 SPI1_SCK, I2S1_CK EVENTOUT TIM2_CH2 - PB4 SPI1_MISO, I2S1_MCK TIM3_CH1 EVENTOUT - PB5 SPI1_MOSI, I2S1_SD TIM3_CH2 TIM16_BKIN I2C1_SMBA PB6 USART1_TX I2C1_SCL TIM16_CH1N - PB7 USART1_RX I2C1_SDA TIM17_CH1N - PB8 - I2C1_SCL TIM16_CH1 - PB9 IR_OUT I2C1_SDA TIM17_CH1 EVENTOUT
PB10 - I2C1_SCL TIM2_CH3 -
PB11 EVENTOUT I2C1_SDA TIM2_CH4 -
PB12 SPI1_NSS EVENTOUT TIM1_BKIN - PB13 SPI1_SCK - TIM1_CH1N - PB14 SPI1_MISO - TIM1_CH2N - PB15 SPI1_MOSI - TIM1_CH3N -
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