Datasheet

STM8S903F3 TSSOP20/SO20 pinout5.1
Figure 3: STM8S903F3 TSSOP20/SO20 pinout
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PD3(HS)/AIN4/TIM5_CH2/ADC_ETRTIM5_CH1[UART1_CK]BEEP/PD4(HS)
AIN5/UART1_TX/PD5(HS)
AIN6/UART1_RX/PD6(HS)
NRST
OSCIN/PA1
OSCOUT/PA2
V
SS
VCAP
V
DD
[SPI_NSS]/TIM5_CH3/PA3(HS)
PB4(T)/I2C_SCL[ADC_ETR]
PC3(HS)/TIM1_CH3[TLI][TIM1_CH1N]
PC4(HS)/TIM1_CH4/CLK_CCO/AIN2/[TIM1_CH2N]
PC5(HS)/SPI_SCK[TIM5_CH1]
PC6(HS)/SPI_MOSI[TIM1_CH1]
PC7(HS)/SPI_MISO[TIM1_CH2]
PD1(HS)/SWIM
PD2(HS)/AIN3[TIM5_CH3]
PB5(T)/[TIM1_BKIN]I2C_SDA
1. (HS) high sink capability.
2. (T) true open drain (P-buffer and protection diode to V
DD
not implemented).
3. [ ] alternate function remapping option (if the same alternate function is shown twice, it
indicates an exclusive choice not a duplication of the function).
DocID15590 Rev 820/116
STM8S903K3 STM8S903F3Pinout and pin description