Datasheet

Pin descriptions STM32L15xCC STM32L15xRC STM32L15xUC STM32L15xVC 45/132 DocID022799 Rev 6
Table 10. Alternate function input/output
Port
name
Digital alternate function number
AFIO0 AFIO1 AFIO2 AFIO3 AFIO4 AFIO5 AFIO6 AFIO7
.
.
AFIO10 AFIO11
.
.
AFIO14 AFIO15
Alternate function
SYSTEM TIM2 TIM3/4/5
TIM9/
10/11
I2C1/2 SPI1/2 SPI3 USART1/2/3 USB LCD CPRI SYSTEM
BOOT0 BOOT0 EVENT OUT
NRST NRST
PA0-
WKUP1
WKUP1/
TAMPER2
TIM2_CH1_ ETR TIM5_CH1 USART2_CTS
COMP1_INP/
TIMx_IC1_0/
G1IO1
EVENT OUT
PA1 TIM2_CH2 TIM5_CH2 USART2_RTS SEG0
COMP1_INP/
TIMx_IC2_0
G1IO2
EVENT OUT
PA2 TIM2_CH3 TIM5_CH3 TIM9_CH1 USART2_TX SEG1
COMP1_INP/
TIMx_IC3_0/
G1IO3
EVENT OUT
PA3 TIM2_CH4 TIM5_CH4 TIM9_CH2 USART2_RX SEG2
COMP1_INP/
TIMx_IC4_0/
G1IO4
EVENT OUT
PA4 SPI1_NSS
SPI3_NSS
I2S3_WS
USART2_CK
COMP1_INP/
TIMx_IC1_1
EVENT OUT
PA5 TIM2_CH1_ETR* SPI1_SCK
COMP1_INP/
TIMx_IC2_1
EVENT OUT
PA6 TIM3_CH1
TIM10_
CH1
SPI1_MISO SEG3
COMP1_INP/
TIMx_IC3_1
G2IO1
EVENT OUT
PA7 TIM3_CH2
TIM11_
CH1
SPI1_MOSI SEG4
COMP1_INP/
TIMx_IC4_1/
G2IO2
EVENT OUT
PA8 MCO USART1_CK COM0
TIMx_IC1_2/
G4IO1
EVENT OUT
PA9 USART1_TX COM1
TIMx_IC2_2/
G4IO2
EVENT OUT