Datasheet

STM32F401xD STM32F401xE Pinouts and pin description
DocID025644 Rev 3 46/135
Port B
PB0 - TIM1_CH2N TIM3_CH3 - - - - - - - - - - - -
EVENT
OUT
PB1 - TIM1_CH3N TIM3_CH4 - - - - - - - - - - - -
EVENT
OUT
PB2 - - - - - - - - - - - - - - -
EVENT
OUT
PB3
JTDO-
SWO
TIM2_CH2 - - - SPI1_SCK
SPI3_SCK/
I2S3_CK
- - I2C2_SDA - - - - -
EVENT
OUT
PB4 JTRST - TIM3_CH1 - -
SPI1_
MISO
SPI3_MISO
I2S3ext_S
D
-I2C3_SDA - - - --
EVENT
OUT
PB5 - - TIM3_CH2 -
I2C1_
SMBA
SPI1
_MOSI
SPI3_MOSI/
I2S3_SD
--- -----
EVENT
OUT
PB6 - - TIM4_CH1 - I2C1_SCL - -
USART1_
TX
-- -----
EVENT
OUT
PB7 - - TIM4_CH2 - I2C1_SDA - -
USART1_
RX
-- -----
EVENT
OUT
PB8 - - TIM4_CH3 TIM10_CH1 I2C1_SCL - - - - - - -
SDIO_
D4
--
EVENT
OUT
PB9 - - TIM4_CH4 TIM11_CH1 I2C1_SDA
SPI2_NSS/I
2S2_WS
------
SDIO_
D5
--
EVENT
OUT
PB10 - TIM2_CH3 - - I2C2_SCL
SPI2_SCK/I
2S2_CK
---------
EVENT
OUT
PB12 - TIM1_BKIN - -
I2C2_
SMBA
SPI2_NSS/I
2S2_WS
---------
EVENT
OUT
PB13 - TIM1_CH1N - - -
SPI2_SCK/I
2S2_CK
---------
EVENT
OUT
PB14 - TIM1_CH2N - - - SPI2_MISO I2S2ext_SD - - - - - - - -
EVENT
OUT
PB15
RTC_
REFN
TIM1_CH3N - - -
SPI2_MOSI
/I2S2_SD
---------
EVENT
OUT
Table 9. Alternate function mapping (continued)
Port
AF00 AF01 AF02 AF03 AF04 AF05 AF06 AF07 AF08 AF09 AF10 AF11 AF12 AF13 AF14 AF15
SYS_AF TIM1/TIM2
TIM3/
TIM4/ TIM5
TIM9/
TIM10/
TIM11
I2C1/I2C2/
I2C3
SPI1/SPI2/
I2S2/SPI3/
I2S3/SPI4
SPI2/I2S2/ SPI3/ I2S3
SPI3/I2S3/
USART1/
USART2
USART6
I2C2/
I2C3
OTG1_FS SDIO
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