UM
227
1
G
PIO a
s
si
g
n
ment
a
nd
sh
aring
DocID030
906 Re
v 2
43
/78
A6
PB3
JTDO/TRACESWO
-
-
-
A5
PB4
-
-
-
ARD_D6 (TIM3_CH1)
B5
PB5
SAI1_SD_B
-
-
-
C5
PB6
I2C1_SCL
-
-
-
D5
PB7
PSRAM_NL (ADV)
-
-
-
C4
PB8
DCMI_D6
(NU)
-
-
-
D4
PB9
SAI1_FS_A
-
-
-
N9
PB10
DSI_USART3_TX
(NU)
STMod+_USART3_TX
PMOD_USART3_TX
-
H7
PB11
-
STMod+_USART3_RX
PMOD_USART3_RX
-
N12
PB12
DFSDM_1_DATIN1
STMod+_GPIO
(NU)
-
-
N13
PB13
DSI_SPI2_SCK
(NU)
STMod+_SPI2_SCK
PMOD_SPI2_SCK
ARD_D13 (SPI2_SCK)
M12
PB14
DSI_SPI_D/CX
(NU)
STMod+_SPI2_MISOp
(NU)
PMOD_SPI2_MISO
(NU)
ARD_D12 (SPI2_MISO)
L10
PB15
DSI_SPI2_MOSI
(NU)
STMod+_SPI2_MOSIp
(NU)
PMOD_SPI2_MOSI
(NU)
ARD_D11 (SPI2_MOSI_TIM3_CH2)
J2
PC0
-
-
-
ARD_D0 (LPUART1_RX)
J3
PC1
-
-
-
ARD_D1 (LPUART1_TX)
J4
PC2
DFSDM_1_CKOUT
STMod+_GPIO
(NU)
-
-
K1
PC3
-
-
-
ARD_A2 (ADC1_IN4)
K4
PC4
-
-
-
ARD_A1 (ADC1_IN13)
F11
PC6
DCMI_D0
STMod+_INT
PMOD_INT -
G11
PC7
DCMI_D1
STMod+_GPIO -
-
F9
PC8
SDMMC_1_D0
-
-
-
G13
PC9
SDMMC_1_D1
-
-
-
D9
PC10
SDMMC_1_D2
-
-
-
E9
PC11
SDMMC_1_D3
-
-
-
F8
PC12
SDMMC_1_CK
-
-
-
Table 28. 32L4R9IDISCOVERY GPIO assignment and sharing (continued)
Pin
GPIO port
GPIO primary interface
STMod+ interface
PMOD interface
ARDUINO interface