Datasheet

Hardware and layout STM32F4DISCOVERY
22/38 Doc ID 022256 Rev 2
PA 1 1
USART1_CTS/
CAN1_RX/
TIM1_CH4/
OTG_FS_DM
70
DM
2
PA 1 2
USART1_RTS/
CAN1_TX/
TIM1_ETR/
OTG_FS_DP
71
DP
3
PA 1 3 J T M S- S WD I O 7 2
SWDIO
4 42
PA14 JTCK-SWCLK 76
SWCLK
2 39
PA 1 5
JTDI/
SPI3_NSS/
I2S3_WS/
TIM2_CH1_ETR/
SPI1_NSS
77
40
PB0
TIM3_CH3/
TIM8_CH2N/
OTG_HS_ULPI_D1/
ETH_MII_RXD2/
TIM1_CH2N/
ADC12_IN8
35
22
PB1
TIM3_CH4/
TIM8_CH3N/
OTG_HS_ULPI_D2/
ETH_MII_RXD3/
OTG_HS_INTN/
TIM1_CH3N/
ADC12_IN9
36
21
PB2 37
24
PB3
JTDO/
TRACESWO/
SPI3_SCK/
I2S3_CK/
TIM2_CH2/
SPI1_SCK
89
SWO
6 28
Table 5. MCU pin description versus board function (page 3 of 10)
MCU pin Board function
Main
function
Alternate
functions
LQFP100
CS43L22
MP45DT02
LIS302DL
Pushbutton
LED
SWD
USB
OSC
Free I/O
Power supply
CN5 CN2
P1 P2