ST STM32F4DISCOVERY - Page 26

Hardware and layout UM1472
26/42 DocID022256 Rev 4
PB11
I2C2_SDA/
USART3_RX/
OTG_HS_ULPI_D4/
ETH_RMII_TX_EN/
ETH_MII_TX_EN/
OTG_HS_SDA/
TIM2_CH4
48 - - - - - - - -
- - - - 35 -
PB12
SPI2_NSS/
I2S2_WS/
I2C2_SMBA/
USART3_CK/
TIM1_BKIN/
CAN2_RX/
OTG_HS_ULPI_D5/
ETH_RMII_TXD0/
ETH_MII_TXD0/
OTG_HS_ID
51 - - - - - - - -
- - - - 36 -
PB13
SPI2_SCK/
I2S2_CK/
USART3_CTS/
TIM1_CH1N/
CAN2_TX/
OTG_HS_ULPI_D6/
ETH_RMII_TXD1/
ETH_MII_TXD1/
OTG_HS_VBUS
52 - - - - - - - -
- - - - 37 -
PB14
SPI2_MISO/
TIM1_CH2N/
TIM12_CH1/
OTG_HS_DMUSART3
_RTS/
TIM8_CH2N/
I2S2ext_SD
53 - - - - - - - -
- - - - 38 -
Table 5. MCU pin description versus board function (continued)
MCU pin Board function
Main
function
Alternate
functions
LQFP100
CS43L22
MP45DT02
LIS302DL or LIS3DSH
Pushbutton
LED
SWD
USB
OSC
Free I/O
Power supply
CN5 CN2
P1 P2