Datasheet

Pinouts and pin description STM32F051x 34/105 Doc ID 022265 Rev 3
Table 15. Alternate functions selected through GPIOA_AFR registers for port B
Pin name AF0 AF1 AF2 AF3
PB0 EVENTOUT TIM3_CH3 TIM1_CH2N TSC_G3_IO2
PB1 TIM14_CH1 TIM3_CH4 TIM1_CH3N TSC_G3_IO3
PB2 TSC_G3_IO4
PB3 SPI1_SCK / I2S1_CK EVENTOUT TIM2_CH2 TSC_G5_IO1
PB4 SPI1_MISO / I2S1_MCK TIM3_CH1 EVENTOUT TSC_G5_IO2
PB5 SPI1_MOSI / I2S1_SD TIM3_CH2 TIM16_BKIN I2C1_SMBA
PB6 USART1_TX I2C1_SCL TIM16_CH1N TSC_G5_IO3
PB7 USART1_RX I2C1_SDA TIM17_CH1N TSC_G5_IO4
PB8 CEC I2C1_SCL TIM16_CH1 TSC_SYNC
PB9 IR_OUT I2C1_SDA TIM17_CH1 EVENTOUT
PB10 CEC I2C2_SCL TIM2_CH3 TSC_SYNC
PB11 EVENTOUT I2C2_SDA TIM2_CH4 TSC_G6_IO1
PB12 SPI2_NSS EVENTOUT TIM1_BKIN TSC_G6_IO2
PB13 SPI2_SCK TIM1_CH1N TSC_G6_IO3
PB14 SPI2_MISO TIM15_CH1 TIM1_CH2N TSC_G6_IO4
PB15 SPI2_MOSI TIM15_CH2 TIM1_CH3N TIM15_CH1N