# STM32H743AII6

**STMicroelectronics** · Microcontrollers (MCU/MPU/SOC) · UFBGA-169

STM32H743AII6 from STMicroelectronics, in a UFBGA-169. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model, then checked against ST open pin data); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| A1 | PE4 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TRACED1, SAI1_D2, DFSDM1_DATIN3, TIM15_CH1N, SPI4_NSS, FMC_A20, DCMI_D4, LCD_B0, among others. |
| A2 | PE2 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TRACECLK, SAI1_CK1, SPI4_SCK, SAI1_MCLK_A, QUADSPI_BK1_IO2, FMC_A23, among others. |
| A3 | VDD | power_in | Supply pin for the I/O and digital domains; standard operating voltage 1.62 to 3.6 V (Table 24). |
| A4 | PI6 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM8_CH2, SAI2_SD_A, FMC_D28, DCMI_D6, LCD_B6, among others. |
| A5 | PB6 | bidirectional | FT_f I/O (5 V tolerant, with I2C FM+ option); alternate functions include TIM16_CH1N, TIM4_CH1, I2C1_SCL, USART1_TX, FDCAN2_TX, among others. |
| A6 | PI2 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM8_CH4, SPI2_MISO/I2S2_SDI, FMC_D26, DCMI_D9, LCD_G7, among others. |
| A7 | VDD | power_in | Supply pin for the I/O and digital domains; standard operating voltage 1.62 to 3.6 V (Table 24). |
| A8 | PG10 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include HRTIM_FLT5, SPI1_NSS/I2S1_WS, LCD_G3, SAI2_SD_B, FMC_NE3, DCMI_D2, among others. |
| A9 | PD5 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include HRTIM_EEV3, USART2_TX, FDCAN1_TXFD_MODE, FMC_NWE, among others. |
| A10 | VDD | power_in | Supply pin for the I/O and digital domains; standard operating voltage 1.62 to 3.6 V (Table 24). |
| A11 | PC12 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TRACED3, HRTIM_EEV2, SPI3_MOSI/I2S3_SDO, USART3_CK, UART5_TX, SDMMC1_CK, DCMI_D9, among others. |
| A12 | PC10 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage, analog option); alternate functions include HRTIM_EEV1, DFSDM1_CKIN5, SPI3_SCK/I2S3_CK, USART3_TX, UART4_TX, QUADSPI_BK1_IO1, DCMI_D8, among others. |
| A13 | PI0 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM5_CH4, SPI2_NSS/I2S2_WS, FDCAN1_RXFD_MODE, FMC_D24, DCMI_D13, LCD_G5, among others. |
| B1 | PC15 | bidirectional | FT I/O with OSC32_OUT additional function (LSE); the oscillator function is kept during and after reset except power-on reset, and output is frequency-limited per Table 63. |
| B2 | PE3 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TRACED0, TIM15_BKIN, SAI1_SD_B, SAI4_SD_B, FMC_A19, EVENTOUT. |
| B3 | VSS | power_in | Ground reference pin; all voltages are referenced to VSS (Section 6.1). |
| B4 | VDDLDO | power_in | Supply for the internal regulator, requiring VDDLDO at or below VDD and 1.62 to 3.6 V (Table 24). |
| B5 | PB8 | bidirectional | FT_fh I/O (5 V tolerant, I2C FM+ and high-speed low-voltage options); alternate functions include TIM16_CH1, TIM4_CH3, DFSDM1_CKIN7, I2C1_SCL, FDCAN1_RX, SDMMC1_D4, DCMI_D6, among others. |
| B6 | PB4 | bidirectional | FT I/O; alternate functions include NJTRST, TIM16_BKIN, TIM3_CH1, HRTIM_EEV6, SPI1_MISO/I2S1_SDI, SPI3_MISO/I2S3_SDI, SDMMC2_D3, UART7_TX, among others. |
| B7 | PI3 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM8_ETR, SPI2_MOSI/I2S2_SDO, FMC_D27, DCMI_D10, EVENTOUT. |
| B8 | PG11 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include LPTIM1_IN2, HRTIM_EEV4, SPI1_SCK/I2S1_CK, SPDIFRX1_IN1, SDMMC2_D2, ETH_MII_TX_EN, DCMI_D3, LCD_B3, among others. |
| B9 | PD6 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include SAI1_D1, DFSDM1_CKIN4, SPI3_MOSI/I2S3_SDO, USART2_RX, SAI4_D1, SDMMC2_CK, FMC_NWAIT, DCMI_D10, among others. |
| B10 | VSS | power_in | Ground reference pin; all voltages are referenced to VSS (Section 6.1). |
| B11 | PC11 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include HRTIM_FLT2, DFSDM1_DATIN5, SPI3_MISO/I2S3_SDI, USART3_RX, UART4_RX, QUADSPI_BK2_NCS, SDMMC1_D3, DCMI_D4, among others. |
| B12 | PA14 | bidirectional | FT I/O multiplexed with JTCK-SWCLK (debug function after reset); alternate function EVENTOUT. |
| B13 | PI1 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM8_BKIN2, SPI2_SCK/I2S2_CK, FMC_D25, DCMI_D8, LCD_G6, among others. |
| C1 | PC14 | bidirectional | FT I/O with OSC32_IN additional function (LSE); the oscillator function is kept during and after reset except power-on reset, and output is frequency-limited per Table 63. |
| C2 | PE6 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TRACED3, TIM1_BKIN2, SAI1_D1, TIM15_CH2, SPI4_MOSI, FMC_A22, DCMI_D7, LCD_G1, among others. |
| C3 | PE5 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TRACED2, SAI1_CK2, DFSDM1_CKIN3, TIM15_CH1, SPI4_MISO, FMC_A21, DCMI_D6, LCD_G0, among others. |
| C4 | PDR_ON | input | FT input pin listed in Table 9 with no alternate or additional functions given in the table. |
| C5 | PB9 | bidirectional | FT_fh I/O (5 V tolerant, I2C FM+ and high-speed low-voltage options); alternate functions include TIM17_CH1, TIM4_CH4, DFSDM1_DATIN7, I2C1_SDA, FDCAN1_TX, SDMMC1_D5, DCMI_D7, LCD_B7, among others. |
| C6 | PB5 | bidirectional | FT I/O; alternate functions include TIM17_BKIN, TIM3_CH2, I2C1_SMBA, SPI1_MOSI/I2S1_SDO, FDCAN2_RX, OTG_HS_ULPI_D7, FMC_SDCKE1, DCMI_D10, UART5_RX, among others. |
| C7 | PG14 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TRACED1, LPTIM1_ETR, SPI6_MOSI, USART6_TX, QUADSPI_BK2_IO3, FMC_A25, LCD_B0, among others. |
| C8 | PG9 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include SPI1_MISO/I2S1_SDI, USART6_RX, SPDIFRX1_IN4, QUADSPI_BK2_IO2, SAI2_FS_B, FMC_NE2/FMC_NCE, DCMI_VSYNC, among others. |
| C9 | PD4 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include HRTIM_FLT3, SAI3_FS_A, USART2_RTS/USART2_DE, FDCAN1_RXFD_MODE, FMC_NOE, EVENTOUT. |
| C10 | PD1 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include DFSDM1_DATIN6, SAI3_SD_A, UART4_TX, FDCAN1_TX, FMC_D3/FMC_DA3, EVENTOUT. |
| C11 | PA15 | bidirectional | FT I/O multiplexed with JTDI (debug function after reset); alternate functions include TIM2_CH1/TIM2_ETR, HRTIM_FLT1, CEC, SPI1_NSS/I2S1_WS, SPI3_NSS/I2S3_WS, UART4_RTS/UART4_DE, UART7_TX, among others. |
| C12 | VSS | power_in | Ground reference pin; all voltages are referenced to VSS (Section 6.1). |
| C13 | VDD | power_in | Supply pin for the I/O and digital domains; standard operating voltage 1.62 to 3.6 V (Table 24). |
| D1 | VDD | power_in | Supply pin for the I/O and digital domains; standard operating voltage 1.62 to 3.6 V (Table 24). |
| D2 | VSS | power_in | Ground reference pin; all voltages are referenced to VSS (Section 6.1). |
| D3 | PC13 | bidirectional | FT I/O with RTC_TAMP1/RTC_TS/WKUP2 additional functions; output is frequency-limited per Table 62 and Table 63. |
| D4 | PE1 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include LPTIM1_IN2, HRTIM_SCOUT, UART8_TX, FDCAN1_TXFD_MODE, FMC_NBL1, DCMI_D3, EVENTOUT. |
| D5 | PE0 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include LPTIM1_ETR, TIM4_ETR, HRTIM_SCIN, LPTIM2_ETR, UART8_RX, FDCAN1_RXFD_MODE, FMC_NBL0, DCMI_D2, EVENTOUT. |
| D6 | PB7 | bidirectional | FT_fa I/O (5 V tolerant, I2C FM+ and analog options) with PVD_IN additional function; alternate functions include TIM17_CH1N, TIM4_CH2, I2C1_SDA, USART1_RX, FMC_NL, DCMI_VSYNC, among others. |
| D7 | PG13 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TRACED0, LPTIM1_OUT, HRTIM_EEV10, SPI6_SCK, USART6_CTS/USART6_NSS, ETH_MII_TXD0/ETH_RMII_TXD0, FMC_A24, LCD_R0, among others. |
| D8 | PD7 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include DFSDM1_DATIN4, SPI1_MOSI/I2S1_SDO, DFSDM1_CKIN1, USART2_CK, SPDIFRX1_IN1, SDMMC2_CMD, FMC_NE1, EVENTOUT. |
| D9 | PD3 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include DFSDM1_CKOUT, SPI2_SCK/I2S2_CK, USART2_CTS/USART2_NSS, FMC_CLK, DCMI_D5, LCD_G7, EVENTOUT. |
| D10 | PD0 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include DFSDM1_CKIN6, SAI3_SCK_A, UART4_RX, FDCAN1_RX, FMC_D2/FMC_DA2, EVENTOUT. |
| D11 | PA13 | bidirectional | FT I/O multiplexed with JTMS/SWDIO (debug function after reset); alternate function EVENTOUT. |
| D12 | VDDLDO | power_in | Supply for the internal regulator, requiring VDDLDO at or below VDD and 1.62 to 3.6 V (Table 24). |
| D13 | VCAP | passive | External capacitor pin for the main regulator; CEXT is 2.2 µF with ESR below 100 mΩ (Table 25). |
| E1 | PI11 | bidirectional | FT I/O with WKUP4 additional function; alternate functions include LCD_G6, OTG_HS_ULPI_DIR, EVENTOUT. |
| E2 | PI7 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM8_CH3, SAI2_FS_A, FMC_D29, DCMI_D7, LCD_B7, EVENTOUT. |
| E3 | VBAT | power_in | Backup-domain supply input for RTC, LSE and backup registers, with VBAT charging capability; range 1.2 to 3.6 V (Figure 15). |
| E4 | PF1 | bidirectional | FT_f I/O (5 V tolerant, I2C FM+ option); alternate functions include I2C2_SCL, FMC_A1, EVENTOUT. |
| E5 | PF3 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage and analog options); alternate function FMC_A3, EVENTOUT; additional function ADC3_INP5. |
| E6 | BOOT0 | input | Dedicated BOOT0 input pin; input voltage range 0 to 9 V (Table 24). |
| E7 | PG15 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include USART6_CTS/USART6_NSS, FMC_SDNCAS, DCMI_D13, EVENTOUT. |
| E8 | PG12 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include LPTIM1_IN1, HRTIM_EEV5, SPI6_MISO, USART6_RTS/USART6_DE, SPDIFRX1_IN2, LCD_B4, FMC_NE4, LCD_B1, among others. |
| E9 | PD2 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TRACED2, TIM3_ETR, UART5_RX, SDMMC1_CMD, DCMI_D11, EVENTOUT. |
| E10 | PA10 | bidirectional | FT_u I/O (5 V tolerant, USB option); alternate functions include TIM1_CH3, HRTIM_CHC2, LPUART1_RX, USART1_RX, FDCAN1_TXFD_MODE, OTG_FS_ID, MDIOS_MDIO, LCD_B4, among others. |
| E11 | PA9 | bidirectional | FT_u I/O (5 V tolerant, USB option) with OTG_FS_VBUS additional function; alternate functions include TIM1_CH2, HRTIM_CHC1, LPUART1_TX, I2C3_SMBA, SPI2_SCK/I2S2_CK, USART1_TX, FDCAN1_RXFD_MODE, among others. |
| E12 | PA8 | bidirectional | FT_fha I/O (5 V tolerant, I2C FM+, high-speed low-voltage and analog options); alternate functions include MCO1, TIM1_CH1, HRTIM_CHB2, TIM8_BKIN2, I2C3_SCL, USART1_CK, OTG_FS_SOF, UART7_RX, among others. |
| E13 | PA12 | bidirectional | FT_u I/O (5 V tolerant, USB option); alternate functions include TIM1_ETR, HRTIM_CHD2, LPUART1_RTS/LPUART1_DE, SPI2_SCK/I2S2_CK, UART4_TX, USART1_RTS/USART1_DE, SAI2_FS_B, FDCAN1_TX, OTG_FS_DP, among others. |
| F1 | PI13 | bidirectional | FT I/O; alternate functions include LCD_VSYNC and EVENTOUT. |
| F2 | PI12 | bidirectional | FT I/O; alternate functions include LCD_HSYNC and EVENTOUT. |
| F3 | PF0 | bidirectional | FT_f I/O (5 V tolerant, I2C FM+ option); alternate functions include I2C2_SDA, FMC_A0, EVENTOUT. |
| F4 | PF2 | bidirectional | FT I/O; alternate functions include I2C2_SMBA, FMC_A2, EVENTOUT. |
| F5 | PF5 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage and analog options); alternate function FMC_A5, EVENTOUT; additional function ADC3_INP4. |
| F6 | PF7 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage and analog options); alternate functions include TIM17_CH1, SPI5_SCK, SAI1_MCLK_B, UART7_TX, SAI4_MCLK_B, QUADSPI_BK1_IO2, EVENTOUT; additional function ADC3_INP3. |
| F7 | PB3 | bidirectional | FT I/O multiplexed with JTDO/TRACESWO (debug function after reset); alternate functions include TIM2_CH2, HRTIM_FLT4, SPI1_SCK/I2S1_CK, SPI3_SCK/I2S3_CK, SDMMC2_D2, CRS_SYNC, UART7_RX, EVENTOUT. |
| F8 | PG4 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM1_BKIN2, TIM1_BKIN2_COMP12, FMC_A14/FMC_BA0, EVENTOUT. |
| F9 | PC6 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include HRTIM_CHA1, TIM3_CH1, TIM8_CH1, DFSDM1_CKIN3, I2S2_MCK, USART6_TX, FMC_NWAIT, SDMMC2_D6, DCMI_D0, LCD_HSYNC, among others. |
| F10 | PC7 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TRGIO, HRTIM_CHA2, TIM3_CH2, TIM8_CH2, DFSDM1_DATIN3, I2S3_MCK, USART6_RX, FMC_NE1, SDMMC2_D7, DCMI_D1, LCD_G6, among others. |
| F11 | PC9 | bidirectional | FT_fh I/O (5 V tolerant, I2C FM+ and high-speed low-voltage options); alternate functions include MCO2, TIM3_CH4, TIM8_CH4, I2C3_SDA, I2S_CKIN, UART5_CTS, QUADSPI_BK1_IO0, LCD_G3, DCMI_D3, LCD_B2, among others. |
| F12 | PC8 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TRACED1, HRTIM_CHB1, TIM3_CH3, TIM8_CH3, USART6_CK, UART5_RTS/UART5_DE, FMC_NE2/FMC_NCE, SDMMC1_D0, DCMI_D2, among others. |
| F13 | PA11 | bidirectional | FT_u I/O (5 V tolerant, USB option); alternate functions include TIM1_CH4, HRTIM_CHD1, LPUART1_CTS, SPI2_NSS/I2S2_WS, UART4_RX, USART1_CTS/USART1_NSS, FDCAN1_RX, OTG_FS_DM, LCD_R4, among others. |
| G1 | VDD | power_in | Supply pin for the I/O and digital domains; standard operating voltage 1.62 to 3.6 V (Table 24). |
| G2 | VSS | power_in | Ground reference pin; all voltages are referenced to VSS (Section 6.1). |
| G3 | PF4 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage and analog options); alternate function FMC_A4, EVENTOUT; additional functions ADC3_INN5, ADC3_INP9. |
| G4 | PF6 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage and analog options); alternate functions include TIM16_CH1, SPI5_NSS, SAI1_SD_B, UART7_RX, SAI4_SD_B, QUADSPI_BK1_IO3, EVENTOUT; additional functions ADC3_INN4, ADC3_INP8. |
| G5 | PF9 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage and analog options); alternate functions include TIM17_CH1N, SPI5_MOSI, SAI1_FS_B, UART7_CTS, SAI4_FS_B, TIM14_CH1, QUADSPI_BK1_IO1, EVENTOUT; additional function ADC3_INP2. |
| G6 | NRST | bidirectional | Bidirectional reset pin with embedded weak pull-up resistor (RST structure). |
| G7 | PF13 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage and analog options); alternate functions include DFSDM1_DATIN6, I2C4_SMBA, FMC_A7, EVENTOUT; additional function ADC2_INP2. |
| G8 | PE7 | bidirectional | TT_ha I/O (3.3 V tolerant, high-speed low-voltage and analog options); alternate functions include TIM1_ETR, DFSDM1_DATIN2, UART7_RX, QUADSPI_BK2_IO0, FMC_D4/FMC_DA4, EVENTOUT; additional functions OPAMP2_VOUT, COMP2_INM. |
| G9 | PG6 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM17_BKIN, HRTIM_CHE1, QUADSPI_BK1_NCS, FMC_NE3, DCMI_D12, LCD_R7, EVENTOUT. |
| G10 | PG7 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include HRTIM_CHE2, SAI1_MCLK_A, USART6_CK, FMC_INT, DCMI_D13, LCD_CLK, EVENTOUT. |
| G11 | PG8 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM8_ETR, SPI6_NSS, USART6_RTS/USART6_DE, SPDIFRX1_IN3, ETH_PPS_OUT, FMC_SDCLK, LCD_G7, EVENTOUT. |
| G12 | VDD50USB | power_in | USB 5 V-domain supply pin listed in Table 9 and the power scheme; no operating range for it is given in Table 24. |
| G13 | VDD33USB | power_in | USB domain supply, 3.0 to 3.6 V when USB is used (Table 24). |
| H1 | PH0-OSC_IN | bidirectional | FT I/O with OSC_IN additional function (HSE oscillator input); alternate function EVENTOUT. |
| H2 | PH1-OSC_OUT | bidirectional | FT I/O with OSC_OUT additional function (HSE oscillator output); alternate function EVENTOUT. |
| H3 | PF10 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage and analog options); alternate functions include TIM16_BKIN, SAI1_D3, QUADSPI_CLK, SAI4_D3, DCMI_D11, LCD_DE, EVENTOUT; additional functions ADC3_INN2, ADC3_INP6. |
| H4 | PF8 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage and analog options); alternate functions include TIM16_CH1N, SPI5_MISO, SAI1_SCK_B, UART7_RTS/UART7_DE, TIM13_CH1, QUADSPI_BK1_IO0, EVENTOUT; additional functions ADC3_INN3, ADC3_INP7. |
| H5 | PJ1 | bidirectional | FT I/O; alternate functions include LCD_R2 and EVENTOUT. |
| H6 | PA4 | bidirectional | TT_a I/O (3.3 V tolerant, analog option supplied by VDDA); alternate functions include D1PWREN, TIM5_ETR, SPI1_NSS/I2S1_WS, SPI3_NSS/I2S3_WS, USART2_CK, SPI6_NSS, OTG_HS_SOF, DCMI_HSYNC, LCD_VSYNC, EVENTOUT; additional functions ADC12_INP18, DAC1_OUT1. |
| H7 | PF14 | bidirectional | FT_fha I/O (5 V tolerant, I2C FM+, high-speed low-voltage and analog options); alternate functions include DFSDM1_CKIN6, I2C4_SCL, FMC_A8, EVENTOUT; additional functions ADC2_INN2, ADC2_INP6. |
| H8 | PE8 | bidirectional | TT_ha I/O (3.3 V tolerant, high-speed low-voltage and analog options); alternate functions include TIM1_CH1N, DFSDM1_CKIN2, UART7_TX, QUADSPI_BK2_IO1, FMC_D5/FMC_DA5, COMP2_OUT, EVENTOUT; additional function OPAMP2_VINM. |
| H9 | PG2 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM8_BKIN, TIM8_BKIN_COMP12, FMC_A12, EVENTOUT. |
| H10 | PG3 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM8_BKIN2, TIM8_BKIN2_COMP12, FMC_A13, EVENTOUT. |
| H11 | PG5 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM1_ETR, FMC_A15/FMC_BA1, EVENTOUT. |
| H12 | VSS | power_in | Ground reference pin; all voltages are referenced to VSS (Section 6.1). |
| H13 | VDD | power_in | Supply pin for the I/O and digital domains; standard operating voltage 1.62 to 3.6 V (Table 24). |
| J1 | PC0 | bidirectional | FT_a I/O (5 V tolerant, analog option supplied by VDDA); alternate functions include DFSDM1_CKIN0, DFSDM1_DATIN4, SAI2_FS_B, OTG_HS_ULPI_STP, FMC_SDNWE, LCD_R5, among others; additional function ADC123_INP10. |
| J2 | PC1 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage and analog options); alternate functions include TRACED0, SAI1_D1, DFSDM1_DATIN0, SPI2_MOSI/I2S2_SDO, SDMMC2_CK, ETH_MDC, MDIOS_MDC, among others; additional functions ADC123_INN10, ADC123_INP11, RTC_TAMP3/WKUP5. |
| J3 | VSSA | power_in | Analog ground pin for the analog domain (ADC, DAC, OPAMP, COMP and VREFBUF). |
| J4 | PJ0 | bidirectional | FT I/O; alternate functions include LCD_R7, LCD_R1 and EVENTOUT. |
| J5 | PA0 | bidirectional | FT_a I/O (5 V tolerant, analog option supplied by VDDA); alternate functions include TIM2_CH1/TIM2_ETR, TIM5_CH1, TIM8_ETR, TIM15_BKIN, USART2_CTS/USART2_NSS, UART4_TX, SDMMC2_CMD, SAI2_SD_B, ETH_MII_CRS, EVENTOUT; additional functions ADC1_INP16, WKUP0. |
| J6 | PA7 | bidirectional | TT_a I/O (3.3 V tolerant, analog option supplied by VDDA); alternate functions include TIM1_CH1N, TIM3_CH2, TIM8_CH1N, SPI1_MOSI/I2S1_SDO, SPI6_MOSI, TIM14_CH1, ETH_MII_RX_DV/ETH_RMII_CRS_DV, FMC_SDNWE, EVENTOUT; additional functions ADC12_INN3, ADC12_INP7, OPAMP1_VINM. |
| J7 | PF15 | bidirectional | FT_fh I/O (5 V tolerant, I2C FM+ and high-speed low-voltage options); alternate functions include I2C4_SDA, FMC_A9, EVENTOUT. |
| J8 | PE9 | bidirectional | TT_ha I/O (3.3 V tolerant, high-speed low-voltage and analog options); alternate functions include TIM1_CH1, DFSDM1_CKOUT, UART7_RTS/UART7_DE, QUADSPI_BK2_IO2, FMC_D6/FMC_DA6, EVENTOUT; additional functions OPAMP2_VINP, COMP2_INP. |
| J9 | PE14 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM1_CH4, SPI4_MOSI, SAI2_MCLK_B, FMC_D11/FMC_DA11, LCD_CLK, EVENTOUT. |
| J10 | PD11 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include LPTIM2_IN2, I2C4_SMBA, USART3_CTS/USART3_NSS, QUADSPI_BK1_IO0, SAI2_SD_A, FMC_A16, EVENTOUT. |
| J11 | PD13 | bidirectional | FT_fh I/O (5 V tolerant, I2C FM+ and high-speed low-voltage options); alternate functions include LPTIM1_OUT, TIM4_CH2, I2C4_SDA, QUADSPI_BK1_IO3, SAI2_SCK_A, FMC_A18, EVENTOUT. |
| J12 | PD15 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM4_CH4, SAI3_MCLK_A, UART8_RTS/UART8_DE, FMC_D1/FMC_DA1, EVENTOUT. |
| J13 | PD14 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM4_CH3, SAI3_MCLK_B, UART8_CTS, FMC_D0/FMC_DA0, EVENTOUT. |
| K1 | PC3_C | passive | TT_a analog-capable pad (ANA) that is a separate pad from PC3, connected through an analog switch configured in SYSCFG; additional function ADC3_INP1. |
| K2 | PC2_C | passive | TT_a analog-capable pad (ANA) that is a separate pad from PC2, connected through an analog switch configured in SYSCFG; additional functions ADC3_INN1, ADC3_INP0. |
| K3 | PH4 | bidirectional | FT_fa I/O (5 V tolerant, I2C FM+ and analog options); alternate functions include I2C2_SCL, LCD_G5, OTG_HS_ULPI_NXT, LCD_G4, EVENTOUT; additional functions ADC3_INN14, ADC3_INP15. |
| K4 | PA1 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage and analog options); alternate functions include TIM2_CH2, TIM5_CH2, LPTIM3_OUT, TIM15_CH1N, USART2_RTS/USART2_DE, UART4_RX, QUADSPI_BK1_IO3, SAI2_MCLK_B, ETH_MII_RX_CLK/ETH_RMII_REF_CLK, LCD_R2, EVENTOUT; additional functions ADC1_INN16, ADC1_INP17. |
| K5 | PA6 | bidirectional | FT_a I/O (5 V tolerant, analog option supplied by VDDA); alternate functions include TIM1_BKIN, TIM3_CH1, TIM8_BKIN, SPI1_MISO/I2S1_SDI, SPI6_MISO, TIM13_CH1, MDIOS_MDC, DCMI_PIXCLK, LCD_G2, EVENTOUT; additional function ADC12_INP3. |
| K6 | PC4 | bidirectional | TT_a I/O (3.3 V tolerant, analog option supplied by VDDA); alternate functions include DFSDM1_CKIN2, I2S1_MCK, SPDIFRX1_IN3, ETH_MII_RXD0/ETH_RMII_RXD0, FMC_SDNE0, EVENTOUT; additional functions ADC12_INP4, OPAMP1_VOUT, COMP1_INM. |
| K7 | PG0 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include FMC_A10 and EVENTOUT. |
| K8 | PE13 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM1_CH3, DFSDM1_CKIN5, SPI4_MISO, SAI2_FS_B, FMC_D10/FMC_DA10, COMP2_OUT, LCD_DE, EVENTOUT. |
| K9 | PH10 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM5_CH1, I2C4_SMBA, FMC_D18, DCMI_D1, LCD_R4, EVENTOUT. |
| K10 | PH12 | bidirectional | FT_fh I/O (5 V tolerant, I2C FM+ and high-speed low-voltage options); alternate functions include TIM5_CH3, I2C4_SDA, FMC_D20, DCMI_D3, LCD_R6, EVENTOUT. |
| K11 | PD9 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include DFSDM1_DATIN3, SAI3_SD_B, USART3_RX, FDCAN2_RXFD_MODE, FMC_D14/FMC_DA14, EVENTOUT. |
| K12 | PD10 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include DFSDM1_CKOUT, SAI3_FS_B, USART3_CK, FDCAN2_TXFD_MODE, FMC_D15/FMC_DA15, LCD_B3, EVENTOUT. |
| K13 | PD12 | bidirectional | FT_fh I/O (5 V tolerant, I2C FM+ and high-speed low-voltage options); alternate functions include LPTIM1_IN1, TIM4_CH1, LPTIM2_IN1, I2C4_SCL, USART3_RTS/USART3_DE, QUADSPI_BK1_IO1, SAI2_FS_A, FMC_A17, EVENTOUT. |
| L1 | VDDA | power_in | Analog supply, 1.62 to 3.6 V when the ADC or COMP is used (Table 24). |
| L2 | VREF+ | power_in | Positive voltage reference pin (VREF+) for the analog peripherals, listed for this package in Table 9. |
| L3 | PH5 | bidirectional | FT_fa I/O (5 V tolerant, I2C FM+ and analog options); alternate functions include I2C2_SDA, SPI5_NSS, FMC_SDNWE, EVENTOUT; additional functions ADC3_INN15, ADC3_INP16. |
| L4 | PA5 | bidirectional | TT_ha I/O (3.3 V tolerant, high-speed low-voltage and analog options); alternate functions include D2PWREN, TIM2_CH1/TIM2_ETR, TIM8_CH1N, SPI1_SCK/I2S1_CK, SPI6_SCK, OTG_HS_ULPI_CK, LCD_R4, EVENTOUT; additional functions ADC12_INN18, ADC12_INP19, DAC1_OUT2. |
| L5 | PB1 | bidirectional | TT_u I/O (3.3 V tolerant, USB option); alternate functions include TIM1_CH3N, TIM3_CH4, TIM8_CH3N, DFSDM1_DATIN1, LCD_R6, OTG_HS_ULPI_D2, ETH_MII_RXD3, LCD_G0, EVENTOUT; additional functions ADC12_INP5, COMP1_INM. |
| L6 | PB2 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage and analog options); alternate functions include RTC_OUT, SAI1_D1, DFSDM1_CKIN1, SAI1_SD_A, SPI3_MOSI/I2S3_SDO, SAI4_SD_A, QUADSPI_CLK, SAI4_D1, EVENTOUT; additional function COMP1_INP. |
| L7 | PG1 | bidirectional | TT_h I/O (3.3 V tolerant, high-speed low-voltage); alternate function FMC_A11 and EVENTOUT; additional function OPAMP2_VINM. |
| L8 | PE12 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM1_CH3N, DFSDM1_DATIN5, SPI4_SCK, SAI2_SCK_B, FMC_D9/FMC_DA9, COMP1_OUT, LCD_B4, EVENTOUT. |
| L9 | PB10 | bidirectional | FT_f I/O (5 V tolerant, I2C FM+ option); alternate functions include TIM2_CH3, HRTIM_SCOUT, LPTIM2_IN1, I2C2_SCL, SPI2_SCK/I2S2_CK, DFSDM1_DATIN7, USART3_TX, QUADSPI_BK1_NCS, OTG_HS_ULPI_D3, ETH_MII_RX_ER, LCD_G4, EVENTOUT. |
| L10 | PH11 | bidirectional | FT_fh I/O (5 V tolerant, I2C FM+ and high-speed low-voltage options); alternate functions include TIM5_CH2, I2C4_SCL, FMC_D19, DCMI_D2, LCD_R5, EVENTOUT. |
| L11 | PB13 | bidirectional | FT_u I/O (5 V tolerant, USB option) with OTG_HS_VBUS additional function; alternate functions include TIM1_CH1N, LPTIM2_OUT, SPI2_SCK/I2S2_CK, DFSDM1_CKIN1, USART3_CTS/USART3_NSS, FDCAN2_TX, OTG_HS_ULPI_D6, UART5_TX, EVENTOUT. |
| L12 | VSS | power_in | Ground reference pin; all voltages are referenced to VSS (Section 6.1). |
| L13 | VDD | power_in | Supply pin for the I/O and digital domains; standard operating voltage 1.62 to 3.6 V (Table 24). |
| M1 | VDD | power_in | Supply pin for the I/O and digital domains; standard operating voltage 1.62 to 3.6 V (Table 24). |
| M2 | VSS | power_in | Ground reference pin; all voltages are referenced to VSS (Section 6.1). |
| M3 | PH3 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage and analog options); alternate functions include QUADSPI_BK2_IO1, SAI2_MCLK_B, ETH_MII_COL, FMC_SDNE0, LCD_R1, EVENTOUT; additional functions ADC3_INN13, ADC3_INP14. |
| M4 | VSS | power_in | Ground reference pin; all voltages are referenced to VSS (Section 6.1). |
| M5 | PB0 | bidirectional | FT_a I/O (5 V tolerant, analog option supplied by VDDA); alternate functions include TIM1_CH2N, TIM3_CH3, TIM8_CH2N, DFSDM1_CKOUT, UART4_CTS, LCD_R3, OTG_HS_ULPI_D1, ETH_MII_RXD2, LCD_G1, EVENTOUT; additional functions ADC12_INN5, ADC12_INP9, OPAMP1_VINP, COMP1_INP. |
| M6 | PF11 | bidirectional | FT_a I/O (5 V tolerant, analog option supplied by VDDA); alternate functions include SPI5_MOSI, SAI2_SD_B, FMC_SDNRAS, DCMI_D12, EVENTOUT; additional function ADC1_INP2. |
| M7 | VSS | power_in | Ground reference pin; all voltages are referenced to VSS (Section 6.1). |
| M8 | PE10 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage and analog options); alternate functions include TIM1_CH2N, DFSDM1_DATIN4, UART7_CTS, QUADSPI_BK2_IO3, FMC_D7/FMC_DA7, EVENTOUT; additional function COMP2_INM. |
| M9 | PB11 | bidirectional | FT_f I/O (5 V tolerant, I2C FM+ option); alternate functions include TIM2_CH4, HRTIM_SCIN, LPTIM2_ETR, I2C2_SDA, DFSDM1_CKIN7, USART3_RX, OTG_HS_ULPI_D4, ETH_MII_TX_EN/ETH_RMII_TX_EN, LCD_G5, EVENTOUT. |
| M10 | VDDLDO | power_in | Supply for the internal regulator, requiring VDDLDO at or below VDD and 1.62 to 3.6 V (Table 24). |
| M11 | VSS | power_in | Ground reference pin; all voltages are referenced to VSS (Section 6.1). |
| M12 | PD8 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include DFSDM1_CKIN3, SAI3_SCK_B, USART3_TX, SPDIFRX1_IN2, FMC_D13/FMC_DA13, EVENTOUT. |
| M13 | PB15 | bidirectional | FT_u I/O (5 V tolerant, USB option); alternate functions include RTC_REFIN, TIM1_CH3N, TIM12_CH2, TIM8_CH3N, USART1_RX, SPI2_MOSI/I2S2_SDO, DFSDM1_CKIN2, UART4_CTS, SDMMC2_D1, OTG_HS_DP, EVENTOUT. |
| N1 | PA2 | bidirectional | FT_a I/O (5 V tolerant, analog option supplied by VDDA); alternate functions include TIM2_CH3, TIM5_CH3, LPTIM4_OUT, TIM15_CH1, USART2_TX, SAI2_SCK_B, ETH_MDIO, MDIOS_MDIO, LCD_R1, EVENTOUT; additional functions ADC12_INP14, WKUP1. |
| N2 | PH2 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage and analog options); alternate functions include LPTIM1_IN2, QUADSPI_BK2_IO0, SAI2_SCK_B, ETH_MII_CRS, FMC_SDCKE0, LCD_R0, EVENTOUT; additional function ADC3_INP13. |
| N3 | PA3 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage and analog options); alternate functions include TIM2_CH4, TIM5_CH4, LPTIM5_OUT, TIM15_CH2, USART2_RX, LCD_B2, OTG_HS_ULPI_D0, ETH_MII_COL, LCD_B5, EVENTOUT; additional function ADC12_INP15. |
| N4 | VDD | power_in | Supply pin for the I/O and digital domains; standard operating voltage 1.62 to 3.6 V (Table 24). |
| N5 | PC5 | bidirectional | TT_a I/O (3.3 V tolerant, analog option supplied by VDDA); alternate functions include SAI1_D3, DFSDM1_DATIN2, SPDIFRX1_IN4, SAI4_D3, ETH_MII_RXD1/ETH_RMII_RXD1, FMC_SDCKE0, COMP1_OUT, EVENTOUT; additional functions ADC12_INN4, ADC12_INP8, OPAMP1_VINM. |
| N6 | PF12 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage and analog options); alternate function FMC_A6, EVENTOUT; additional functions ADC1_INN2, ADC1_INP6. |
| N7 | VDD | power_in | Supply pin for the I/O and digital domains; standard operating voltage 1.62 to 3.6 V (Table 24). |
| N8 | PE11 | bidirectional | FT_ha I/O (5 V tolerant, high-speed low-voltage and analog options); alternate functions include TIM1_CH2, DFSDM1_CKIN4, SPI4_NSS, SAI2_SD_B, FMC_D8/FMC_DA8, LCD_G3, EVENTOUT; additional function COMP2_INP. |
| N9 | PE15 | bidirectional | FT_h I/O (5 V tolerant, high-speed low-voltage); alternate functions include TIM1_BKIN, FMC_D12/FMC_DA12, TIM1_BKIN_COMP12/COMP_TIM1_BKIN, LCD_R7, EVENTOUT. |
| N10 | VCAP | passive | External capacitor pin for the main regulator; CEXT is 2.2 µF with ESR below 100 mΩ (Table 25). |
| N11 | VDD | power_in | Supply pin for the I/O and digital domains; standard operating voltage 1.62 to 3.6 V (Table 24). |
| N12 | PB12 | bidirectional | FT_u I/O (5 V tolerant, USB option); alternate functions include TIM1_BKIN, I2C2_SMBA, SPI2_NSS/I2S2_WS, DFSDM1_DATIN1, USART3_CK, FDCAN2_RX, OTG_HS_ULPI_D5, ETH_MII_TXD0/ETH_RMII_TXD0, OTG_HS_ID, UART5_RX, EVENTOUT. |
| N13 | PB14 | bidirectional | FT_u I/O (5 V tolerant, USB option); alternate functions include TIM1_CH2N, TIM12_CH1, TIM8_CH2N, USART1_TX, SPI2_MISO/I2S2_SDI, DFSDM1_DATIN2, USART3_RTS/USART3_DE, UART4_RTS/UART4_DE, SDMMC2_D0, OTG_HS_DM, EVENTOUT. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | UFBGA-169 |
| Category | Embedded Processors & Controllers |
| Pins | 169 |

## CAD (KiCad official)

- Symbol: `STM32H743AII6`
- Footprint: `Package_BGA:UFBGA-169_7x7mm_Layout13x13_P0.5mm`
- 3D model: UFBGA-169 (KiCad packages3D, STEP)
- 3D model files: `stm32h743aii6-etched.step` / `stm32h743aii6-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stm32h743aii6.step` / `stm32h743aii6.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589834977392566272) (357 pp, sha256 `9c74d2015445f7c3`, retrieved 2026-10-10, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/stm32h743aii6-datasheet.pdf)