STMicroelectronics 32L4R9IDISCOVERY - Page 43

UM2271 GPIO assignment and sharing
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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