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Table 5.
Alternate function input/output
AFIO0
AFIO1
AFIO2
Port
name
SYSTEM
TIM2
BOOT0
BOOT0
NRST
NRST
TIM2_CH1_
PA0-WKUP1 WKUP1
ETR
PA1
TIM2_CH2
PA2
TIM2_CH3
PA3
TIM2_CH4
PA4
TIM2_CH1_
PA5
ETR
PA6
TIM3_CH1 TIM10_CH1
PA7
TIM3_CH2 TIM11_CH1
PA8
MCO
PA9
PA10
PA11
PA12
PA13
JTMS-SWDAT
PA14
JTCK-SWCLK
Digital alternate function number
AFIO3
AFIO4
AFIO5 AFOI6 AFIO7 AFIO8 AFIO9 AFIO10 AFIO11 AFIO12 AFIO13 AFIO14 AFIO15
TIM3/4
TIM9/10/11
I2C1/2
SPI1/2
TIM9_CH1
TIM9_CH2
SPI1_NSS
SPI1_SCK
SPI1_MISO
SPI1_MOSI
SPI1_MISO
SPI1_MOSI
Alternate function
USART
N/A
N/A
N/A
USBFS
1/2/3
USART2_
CTS
USART2_
RTS
USART2_
TX
USART2_
RX
USART2_
CK
USART1_
CK
USART1_
TX
USART1_
RX
USART1_
DM
CTS
USART1_
DP
RTS
LCD
N/A
N/A
RI
TIMx_IC1 EVENTOUT
[SEG0]
TIMx_IC2 EVENTOUT
[SEG1]
TIMx_IC3 EVENTOUT
[SEG2]
TIMx_IC4 EVENTOUT
TIMx_IC1 EVENTOUT
TIMx_IC2 EVENTOUT
[SEG3]
TIMx_IC3 EVENTOUT
[SEG4]
TIMx_IC4 EVENTOUT
[COM0]
TIMx_IC1 EVENTOUT
[COM1]
TIMx_IC2 EVENTOUT
[COM2]
TIMx_IC3 EVENTOUT
TIMx_IC4 EVENTOUT
TIMx_IC1 EVENTOUT
TIMx_IC2 EVENTOUT
TIMx_IC3 EVENTOUT
SYSTEM
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