STM8S903K3 STM8S903F3
Pinout and pin description
5.4
STM8S903K3 UFQFPN32/LQFP32/SDIP32 pinout
Figure 5: STM8S903K3 UFQFPN32/LQFP32 pinout
32 31 30 29 28 27 26 25
24
1
2
3
4
5
6
7
8
NRST
OSCIN/PA1
PC7 (HS)/SPI_MISO [TIM1_CH2]
23
22
21
20
19
18
17
PC6 (HS)/SPI_MOSI [TIM1_CH1]
OSCOUT/PA2
PC5 (HS)/SPI_SCK [TIM5_CH1]
V
SS
PC4 (HS)/TIM1_CH4/CLK_CCO [AIN2] [TIM1_CH2N]
PC3 (HS)/TIM1_CH3 [TLI] [TIM1_CH1N]
PC2 (HS)/TIM1_CH2 [TIM1_CH3N]
VCAP
V
DD
[UART1_TX] [SPI_NSS] TIM5_CH3/(HS) PA3
[UART1_RX] PF4
PC1 (HS)/TIM1_CH1/UART1_CK [TIM1_CH2N]
PE5/SPI_NSS [TIM1_CH1N]
9
10 11 12 13 14 15 16
1. (HS) high sink capability.
2. (T) true open drain (P-buffer and protection diode to VDD 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 8
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