Hardware and layout
STM32F4DISCOVERY
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Doc ID 022256 Rev 2
PA11
USART1_CTS/
CAN1_RX/
TIM1_CH4/
OTG_FS_DM
70
DM
2
PA12
USART1_RTS/
CAN1_TX/
TIM1_ETR/
OTG_FS_DP
71
DP
3
PA13
JTMS-SWDIO
72
SWDIO
4
42
PA14
JTCK-SWCLK
76
SW
C
LK
2
39
PA15
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
SW
O
6
28
Table 5.
MCU pin description versus board function (page 3 of 10)
MCU pin
Board function
Main
function
Alternate
functions
LQ
FP10
0
CS
43
L
22
MP
45
D
T
02
LI
S302
D
L
Pu
sh
b
u
tto
n
LE
D
SWD
USB
OS
C
Free
I/O
Po
w
er
s
u
p
p
ly
CN5
CN2
P1
P2
