STM32U5A9 pin
name
Signal assignment
Main function
(default)
Secondary
function
Pin number of
expansion connector or
test point reference
PB14 SDMMC2_D0 Exp. conn. SDMMC2 - Pin 2 of CN9
PB15 SDMMC2_D1 Exp. conn. SDMMC2 UCPD.CC2 Pin 4 of CN9
PC0 OCTOSPIM_P1.IO7 Octo-SPI - -
PC1 OCTOSPIM_P1.IO4 Octo-SPI - -
PC2 OCTOSPIM_P1.IO5 Octo-SPI - -
PC3 OCTOSPIM_P1.IO6 Octo-SPI - -
PC4 ADC12_IN13 Exp. conn. ADC option - Pin 29 of CN9
PC5 ADC12_IN14 Exp. conn. ADC option - Pin 23 of CN9
PC6 SDMMC1.D6 eMMC - -
PC7 SDMMC1.D7 eMMC - -
PC8 SDMMC1.D0 eMMC - -
PC9 SDMMC1.D1 eMMC - -
PC10 SDMMC1.D2 eMMC - -
PC11 SDMMC1.D3 eMMC - -
PC12 SDMMC1.CK eMMC - -
PC13 USER_Button Button Wake-up -
PC14 - OSC32_IN OSC32_IN 37.768 kHz LSE oscillator - -
PC15 -
OSC32_OUT
OSC32_OUT 37.768 kHz LSE oscillator - -
PD0 I2C6_SDA Exp. conn. I2C6 - Pin 35 of CN10
PD1 I2C6_SCL Exp. conn. I2C6 - Pin 37 of CN10
PD2 SDMMC1.CMD eMMC - -
PD3 SPI2_MISO Exp. conn. SPI2 - Pin 13 of CN10
PD4 SPI2_MOSI Exp. conn. SPI2 DSI_V3 connector Pin 19 of CN10
PD5 DSI_RESETn DSI_V3 connector - -
PD6 SDMMC2_CK Exp. conn. SDMMC2 - Pin 10 of CN9
PD7 SDMMC2_CMD Exp. conn. SDMMC2 - Pin 12 of CN9
PD8 DSI_SPI_USART_CS - DSI_V3 connector
PD9 SAI2_MCLK Exp. conn. option - Pin 11 of CN10
PD10 SAI2_SCK Exp. conn. option
DSI_V3 connector
USART3_CK
Pin 15 of CN10
PD11 SAI2_SDA Exp. conn. option
DSI_V3 connector
DSI_SPI_D/CX
Pin 13 of CN10
PD12 SAI2_FS Exp. conn. option - Pin 9 of CN10
PD13 PD13 (free) - - TP25
PD14 PD14 (free) - - TP31
PD15 TIM4_CH4 Exp. conn. TIMER - Pin 28 of CN10
PE0 LED_GREEN USER LED - -
PE1 LED_RED USER LED - -
PE2 SAI1.MCLK_A
SAI1 for Audio Codec and
Exp. conn.
SAI1_MCLK Pin 1 of CN10
PE3 SAI1.SD_B SAI1 for Audio Codec - -
UM2967
STM32U5A9NJH6Q GPIO and pin assignment
UM2967 - Rev 1
page 55/68
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