DocID022256 Rev 4 23/42
UM1472 Hardware and layout
41
PA8
MCO1/
USART1_CK/
TIM1_CH1/
I2C3_SCL/
OTG_FS_SOF
67 - - - - - - - - - - -- - 43
PA9
USART1_TX/
TIM1_CH2/
I2C3_SMBA/
DCMI_D0/
OTG_FS_VBUS
68 - - - -
GREEN
-
VBUS
- - - 1 - - 44
PA10
USART1_RX/
TIM1_CH3/
OTG_FS_ID/
DCMI_D1
69 - - - - - -
ID
- - - 4 - - 41
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 - - - - -
SWCLK
- - - - - 2 - 39
PA15
JTDI/
SPI3_NSS/
I2S3_WS/
TIM2_CH1_ETR/
SPI1_NSS
77 - - - - - - - - - - - - - 40
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
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