STM32F427AIH6

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm32f427aih6",
  "title": "STM32F427AIH6",
  "brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFBGA-169. Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm32f427aih6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STM32F427AIH6",
    "manufacturer": "STMicroelectronics",
    "package": "UFBGA-169",
    "pin_count": 169,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588895693394087936",
    "parts": {
      "symbol": "stm32f427aih6.kicad_sym",
      "footprint": "stm32f427aih6.kicad_mod",
      "model_3d": "stm32f427aih6-hero.glb",
      "model_3d_plain": "stm32f427aih6.glb",
      "model_3d_step": "stm32f427aih6-etched.step",
      "model_3d_step_plain": "stm32f427aih6.step",
      "lbr": "stm32f427aih6.lbr"
    },
    "distributor_links": {
      "lcsc": "C1337376",
      "digikey": "497-15795-ND",
      "mouser": "511-STM32F427AIH6"
    },
    "distributor_check": {
      "checked_at": "2026-10-07T23:12:08Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-15795-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32F427AIH6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "A1",
        "name": "NC",
        "type": "unconnected",
        "description": "Corner ball, not bonded internally, and should be left not connected on the PCB."
      },
      {
        "number": "A2",
        "name": "PI6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM8_CH2, FMC_D28, DCMI_D6, LCD_B6, EVENTOUT."
      },
      {
        "number": "A3",
        "name": "PI5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM8_CH1, FMC_NBL3, DCMI_VSYNC, LCD_B5, EVENTOUT."
      },
      {
        "number": "A4",
        "name": "PE1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions UART8_Tx, FMC_NBL1, DCMI_D3, EVENTOUT."
      },
      {
        "number": "A5",
        "name": "BOOT0",
        "type": "input",
        "description": "Dedicated BOOT0 pin (input, also used as VPP) that selects the boot mode."
      },
      {
        "number": "A6",
        "name": "PB4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); NJTRST after reset; alternate functions TIM3_CH1, SPI1_MISO, SPI3_MISO, I2S3ext_SD, EVENTOUT."
      },
      {
        "number": "A7",
        "name": "PG12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions SPI6_MISO, USART6_RTS, LCD_B4, FMC_NE4, LCD_B1, EVENTOUT."
      },
      {
        "number": "A8",
        "name": "PD7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions USART2_CK, FMC_NE1/FMC_NCE2, EVENTOUT."
      },
      {
        "number": "A9",
        "name": "PD3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions SPI2_SCK/I2S2_CK, USART2_CTS, FMC_CLK, DCMI_D5, LCD_G7, EVENTOUT."
      },
      {
        "number": "A10",
        "name": "PC12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions SPI3_MOSI/I2S3_SD, USART3_CK, UART5_TX, SDIO_CK, DCMI_D9, EVENTOUT."
      },
      {
        "number": "A11",
        "name": "PA14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); JTCK-SWCLK after reset, with EVENTOUT."
      },
      {
        "number": "A12",
        "name": "PI3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM8_ETR, SPI2_MOSI/I2S2_SD, FMC_D27, DCMI_D10, EVENTOUT."
      },
      {
        "number": "A13",
        "name": "NC",
        "type": "unconnected",
        "description": "Corner ball, not bonded internally, and should be left not connected on the PCB."
      },
      {
        "number": "B1",
        "name": "PI7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM8_CH3, FMC_D29, DCMI_D7, LCD_B7, EVENTOUT."
      },
      {
        "number": "B2",
        "name": "PE2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TRACECLK, SPI4_SCK, SAI1_MCLK_A, ETH_MII_TXD3, FMC_A23, EVENTOUT."
      },
      {
        "number": "B3",
        "name": "PI4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM8_BKIN, FMC_NBL2, DCMI_D5, LCD_B4, EVENTOUT."
      },
      {
        "number": "B4",
        "name": "PE0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM4_ETR, UART8_RX, FMC_NBL0, DCMI_D2, EVENTOUT."
      },
      {
        "number": "B5",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM4_CH2, I2C1_SDA, USART1_RX, FMC_NL, DCMI_VSYNC, EVENTOUT."
      },
      {
        "number": "B6",
        "name": "PB3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); JTDO/TRACESWO after reset; alternate functions TIM2_CH2, SPI1_SCK, SPI3_SCK/I2S3_CK, EVENTOUT."
      },
      {
        "number": "B7",
        "name": "PG11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions ETH_MII_TX_EN/ETH_RMII_TX_EN, FMC_NCE4_2, DCMI_D3, LCD_B3, EVENTOUT."
      },
      {
        "number": "B8",
        "name": "PD6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions SPI3_MOSI/I2S3_SD, SAI1_SD_A, USART2_RX, FMC_NWAIT, DCMI_D10, LCD_B2, EVENTOUT."
      },
      {
        "number": "B9",
        "name": "PD2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM3_ETR, UART5_RX, SDIO_CMD, DCMI_D11, EVENTOUT."
      },
      {
        "number": "B10",
        "name": "PC11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions I2S3ext_SD, SPI3_MISO, USART3_RX, UART4_RX, SDIO_D3, DCMI_D4, EVENTOUT."
      },
      {
        "number": "B11",
        "name": "PA15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); JTDI after reset; alternate functions TIM2_CH1/TIM2_ETR, SPI1_NSS, SPI3_NSS/I2S3_WS, EVENTOUT."
      },
      {
        "number": "B12",
        "name": "PI2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM8_CH4, SPI2_MISO, I2S2ext_SD, FMC_D26, DCMI_D9, LCD_G7, EVENTOUT."
      },
      {
        "number": "B13",
        "name": "PI0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM5_CH4, SPI2_NSS/I2S2_WS, FMC_D24, DCMI_D13, LCD_G5, EVENTOUT."
      },
      {
        "number": "C1",
        "name": "PE3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TRACED0, SAI1_SD_B, FMC_A19, EVENTOUT."
      },
      {
        "number": "C2",
        "name": "PE4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TRACED1, SPI4_NSS, SAI1_FS_A, FMC_A20, DCMI_D4, LCD_B0, EVENTOUT."
      },
      {
        "number": "C3",
        "name": "PDR_ON",
        "type": "power_in",
        "description": "Power-down reset control pin (type S in the pin table), used for PDR_ON control with internal reset OFF."
      },
      {
        "number": "C4",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM4_CH4, TIM11_CH1, I2C1_SDA, SPI2_NSS/I2S2_WS, CAN1_TX, SDIO_D5, DCMI_D7, LCD_B7, EVENTOUT."
      },
      {
        "number": "C5",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM4_CH1, I2C1_SCL, USART1_TX, CAN2_TX, FMC_SDNE1, DCMI_D5, EVENTOUT."
      },
      {
        "number": "C6",
        "name": "PG15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions USART6_CTS, FMC_SDNCAS, DCMI_D13, EVENTOUT."
      },
      {
        "number": "C7",
        "name": "PG10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions LCD_G3, FMC_NCE4_1/FMC_NE3, DCMI_D2, LCD_B2, EVENTOUT."
      },
      {
        "number": "C8",
        "name": "PD5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions USART2_TX, FMC_NWE, EVENTOUT."
      },
      {
        "number": "C9",
        "name": "PD1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions CAN1_TX, FMC_D3, EVENTOUT."
      },
      {
        "number": "C10",
        "name": "PC10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions SPI3_SCK/I2S3_CK, USART3_TX, UART4_TX, SDIO_D2, DCMI_D8, LCD_R2, EVENTOUT."
      },
      {
        "number": "C11",
        "name": "PI1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions SPI2_SCK/I2S2_CK, FMC_D25, DCMI_D8, LCD_G6, EVENTOUT."
      },
      {
        "number": "C12",
        "name": "PH15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM8_CH3N, FMC_D23, DCMI_D11, LCD_G4, EVENTOUT."
      },
      {
        "number": "C13",
        "name": "PH14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM8_CH2N, FMC_D22, DCMI_D4, LCD_G3, EVENTOUT."
      },
      {
        "number": "D1",
        "name": "PE5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TRACED2, TIM9_CH1, SPI4_MISO, SAI1_SCK_A, FMC_A21, DCMI_D6, LCD_G0, EVENTOUT."
      },
      {
        "number": "D2",
        "name": "PE6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TRACED3, TIM9_CH2, SPI4_MOSI, SAI1_SD_A, FMC_A22, DCMI_D7, LCD_G1, EVENTOUT."
      },
      {
        "number": "D3",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply pin for the MCU, 1.7 V to 3.6 V application supply and I/Os."
      },
      {
        "number": "D4",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM4_CH3, TIM10_CH1, I2C1_SCL, CAN1_RX, ETH_MII_TXD3, SDIO_D4, DCMI_D6, LCD_B6, EVENTOUT."
      },
      {
        "number": "D5",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM3_CH2, I2C1_SMBA, SPI1_MOSI, SPI3_MOSI/I2S3_SD, CAN2_RX, OTG_HS_ULPI_D7, ETH_PPS_OUT, FMC_SDCKE1, DCMI_D10, EVENTOUT."
      },
      {
        "number": "D6",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply pin for the MCU, 1.7 V to 3.6 V application supply and I/Os."
      },
      {
        "number": "D7",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin of the MCU."
      },
      {
        "number": "D8",
        "name": "PD4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions USART2_RTS, FMC_NOE, EVENTOUT."
      },
      {
        "number": "D9",
        "name": "PD0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions CAN1_RX, FMC_D2, EVENTOUT."
      },
      {
        "number": "D10",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply pin for the MCU, 1.7 V to 3.6 V application supply and I/Os."
      },
      {
        "number": "D11",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin of the MCU."
      },
      {
        "number": "D12",
        "name": "VCAP_2",
        "type": "power_in",
        "description": "VCAP2 pin of the internal voltage regulator, connected to its external capacitor (see Section 6.3.2)."
      },
      {
        "number": "D13",
        "name": "PH13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM8_CH1N, CAN1_TX, FMC_D21, LCD_G2, EVENTOUT."
      },
      {
        "number": "E1",
        "name": "PC14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except oscillator mode) supplied through the power switch, limited to 2 MHz with 30 pF load and not usable as a current source; also OSC32_IN."
      },
      {
        "number": "E2",
        "name": "PI9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions CAN1_RX, FMC_D30, LCD_VSYNC, EVENTOUT."
      },
      {
        "number": "E3",
        "name": "PI10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions ETH_MII_RX_ER, FMC_D31, LCD_HSYNC, EVENTOUT."
      },
      {
        "number": "E4",
        "name": "PC13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) supplied through the power switch, limited to 2 MHz with 30 pF load and 3 mA sink; also TAMP_1."
      },
      {
        "number": "E5",
        "name": "VBAT",
        "type": "power_in",
        "description": "Power supply for the RTC, 20x32-bit backup registers and optional 4 KB backup SRAM."
      },
      {
        "number": "E6",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply pin for the MCU, 1.7 V to 3.6 V application supply and I/Os."
      },
      {
        "number": "E7",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin of the MCU."
      },
      {
        "number": "E8",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM1_CH2, I2C3_SMBA, USART1_TX, DCMI_D0, EVENTOUT; also OTG_FS_VBUS."
      },
      {
        "number": "E9",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM1_CH3, USART1_RX, OTG_FS_ID, DCMI_D1, EVENTOUT."
      },
      {
        "number": "E10",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM1_CH4, USART1_CTS, CAN1_RX, LCD_R4, OTG_FS_DM, EVENTOUT."
      },
      {
        "number": "E11",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM1_ETR, USART1_RTS, CAN1_TX, LCD_R5, OTG_FS_DP, EVENTOUT."
      },
      {
        "number": "E12",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); JTMS-SWDIO after reset, with EVENTOUT."
      },
      {
        "number": "E13",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions MCO1, TIM1_CH1, I2C3_SCL, USART1_CK, OTG_FS_SOF, LCD_R6, EVENTOUT."
      },
      {
        "number": "F1",
        "name": "PC15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except oscillator mode) supplied through the power switch, limited to 2 MHz with 30 pF load; also OSC32_OUT."
      },
      {
        "number": "F2",
        "name": "PF0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions I2C2_SDA, FMC_A0, EVENTOUT."
      },
      {
        "number": "F3",
        "name": "PF1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions I2C2_SCL, FMC_A1, EVENTOUT."
      },
      {
        "number": "F4",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply pin for the MCU, 1.7 V to 3.6 V application supply and I/Os."
      },
      {
        "number": "F5",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin of the MCU."
      },
      {
        "number": "F6",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin of the MCU."
      },
      {
        "number": "F7",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply pin for the MCU, 1.7 V to 3.6 V application supply and I/Os."
      },
      {
        "number": "F8",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply pin for the MCU, 1.7 V to 3.6 V application supply and I/Os."
      },
      {
        "number": "F9",
        "name": "PC6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM3_CH1, TIM8_CH1, I2S2_MCK, USART6_TX, SDIO_D6, DCMI_D0, LCD_HSYNC, EVENTOUT."
      },
      {
        "number": "F10",
        "name": "PC7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM3_CH2, TIM8_CH2, I2S3_MCK, USART6_RX, SDIO_D7, DCMI_D1, LCD_G6, EVENTOUT."
      },
      {
        "number": "F11",
        "name": "PC8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM3_CH3, TIM8_CH3, USART6_CK, SDIO_D0, DCMI_D2, EVENTOUT."
      },
      {
        "number": "F12",
        "name": "PC9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions MCO2, TIM3_CH4, TIM8_CH4, I2C3_SDA, I2S_CKIN, SDIO_D1, DCMI_D3, EVENTOUT."
      },
      {
        "number": "F13",
        "name": "PG8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions SPI6_NSS, USART6_RTS, ETH_PPS_OUT, FMC_SDCLK, EVENTOUT."
      },
      {
        "number": "G1",
        "name": "PH1",
        "type": "bidirectional",
        "description": "Oscillator-mode pin (OSC_OUT) with EVENTOUT; 5 V tolerance does not apply in oscillator mode."
      },
      {
        "number": "G2",
        "name": "PH0",
        "type": "bidirectional",
        "description": "Oscillator-mode pin (OSC_IN) with EVENTOUT; 5 V tolerance does not apply in oscillator mode."
      },
      {
        "number": "G3",
        "name": "PF4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except analog mode); alternate functions FMC_A4, EVENTOUT; ADC3_IN14."
      },
      {
        "number": "G4",
        "name": "PF3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except analog mode); alternate functions FMC_A3, EVENTOUT; ADC3_IN9."
      },
      {
        "number": "G5",
        "name": "PF2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions I2C2_SMBA, FMC_A2, EVENTOUT."
      },
      {
        "number": "G6",
        "name": "PC0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except analog mode); alternate functions OTG_HS_ULPI_STP, FMC_SDNWE, EVENTOUT; ADC123_IN10."
      },
      {
        "number": "G7",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin of the MCU."
      },
      {
        "number": "G8",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply pin for the MCU, 1.7 V to 3.6 V application supply and I/Os."
      },
      {
        "number": "G9",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin of the MCU."
      },
      {
        "number": "G10",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply pin for the MCU, 1.7 V to 3.6 V application supply and I/Os."
      },
      {
        "number": "G11",
        "name": "PG6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions FMC_INT2, DCMI_D12, LCD_R7, EVENTOUT."
      },
      {
        "number": "G12",
        "name": "PG7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions USART6_CK, FMC_INT3, DCMI_D13, LCD_CLK, EVENTOUT."
      },
      {
        "number": "G13",
        "name": "PG5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions FMC_A15/FMC_BA1, EVENTOUT."
      },
      {
        "number": "H1",
        "name": "PF10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except analog mode); alternate functions FMC_INTR, DCMI_D11, LCD_DE, EVENTOUT; ADC3_IN8."
      },
      {
        "number": "H2",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Bidirectional reset pin with weak pull-up resistor."
      },
      {
        "number": "H3",
        "name": "PF5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except analog mode); alternate functions FMC_A5, EVENTOUT; ADC3_IN15."
      },
      {
        "number": "H4",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply pin for the MCU, 1.7 V to 3.6 V application supply and I/Os."
      },
      {
        "number": "H5",
        "name": "PC1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except analog mode); alternate functions ETH_MDC, EVENTOUT; ADC123_IN11."
      },
      {
        "number": "H6",
        "name": "PC2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except analog mode); alternate functions SPI2_MISO, I2S2ext_SD, OTG_HS_ULPI_DIR, ETH_MII_TXD2, FMC_SDNE0, EVENTOUT; ADC123_IN12."
      },
      {
        "number": "H7",
        "name": "PC3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except analog mode); alternate functions SPI2_MOSI/I2S2_SD, OTG_HS_ULPI_NXT, ETH_MII_TX_CLK, FMC_SDCKE0, EVENTOUT; ADC123_IN13."
      },
      {
        "number": "H8",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply pin for the MCU, 1.7 V to 3.6 V application supply and I/Os."
      },
      {
        "number": "H9",
        "name": "PE13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM1_CH3, SPI4_MISO, FMC_D10, LCD_DE, EVENTOUT."
      },
      {
        "number": "H10",
        "name": "PD11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions USART3_CTS, FMC_A16, EVENTOUT."
      },
      {
        "number": "H11",
        "name": "PD14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM4_CH3, FMC_D0, EVENTOUT."
      },
      {
        "number": "H12",
        "name": "PG4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions FMC_A14/FMC_BA0, EVENTOUT."
      },
      {
        "number": "H13",
        "name": "PG2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions FMC_A12, EVENTOUT."
      },
      {
        "number": "J1",
        "name": "VSSA",
        "type": "power_in",
        "description": "Ground for the analog section (ADC, DAC, reference)."
      },
      {
        "number": "J2",
        "name": "VREF-",
        "type": "power_in",
        "description": "Negative reference voltage for the ADC (VREF-)."
      },
      {
        "number": "J3",
        "name": "VREF+",
        "type": "power_in",
        "description": "Positive reference voltage for the ADC (VREF+)."
      },
      {
        "number": "J4",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply voltage for the ADC, DAC and reset blocks."
      },
      {
        "number": "J5",
        "name": "PA0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except analog mode); alternate functions TIM2_CH1/TIM2_ETR, TIM5_CH1, TIM8_ETR, USART2_CTS, UART4_TX, ETH_MII_CRS, EVENTOUT; ADC123_IN0/WKUP; used as internal reset when BYPASS_REG is tied to VDD."
      },
      {
        "number": "J6",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin of the MCU."
      },
      {
        "number": "J7",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin of the MCU."
      },
      {
        "number": "J8",
        "name": "PE8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM1_CH1N, UART7_Tx, FMC_D5, EVENTOUT."
      },
      {
        "number": "J9",
        "name": "PE14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM1_CH4, SPI4_MOSI, FMC_D11, LCD_CLK, EVENTOUT."
      },
      {
        "number": "J10",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin of the MCU."
      },
      {
        "number": "J11",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply pin for the MCU, 1.7 V to 3.6 V application supply and I/Os."
      },
      {
        "number": "J12",
        "name": "PD15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM4_CH4, FMC_D1, EVENTOUT."
      },
      {
        "number": "J13",
        "name": "PD12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM4_CH1, USART3_RTS, FMC_A17, EVENTOUT."
      },
      {
        "number": "K1",
        "name": "PA1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except analog mode); alternate functions TIM2_CH2, TIM5_CH2, USART2_RTS, UART4_RX, ETH_MII_RX_CLK/ETH_RMII_REF_CLK, EVENTOUT; ADC123_IN1."
      },
      {
        "number": "K2",
        "name": "PA2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except analog mode); alternate functions TIM2_CH3, TIM5_CH3, TIM9_CH1, USART2_TX, ETH_MDIO, EVENTOUT; ADC123_IN2."
      },
      {
        "number": "K3",
        "name": "PA3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except analog mode); alternate functions TIM2_CH4, TIM5_CH4, TIM9_CH2, USART2_RX, OTG_HS_ULPI_D0, ETH_MII_COL, LCD_B5, EVENTOUT; ADC123_IN3."
      },
      {
        "number": "K4",
        "name": "PA7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except analog mode); alternate functions TIM1_CH1N, TIM3_CH2, TIM8_CH1N, SPI1_MOSI, TIM14_CH1, ETH_MII_RX_DV/ETH_RMII_CRS_DV, EVENTOUT; ADC12_IN7."
      },
      {
        "number": "K5",
        "name": "PB1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except analog mode); alternate functions TIM1_CH3N, TIM3_CH4, TIM8_CH3N, LCD_R6, OTG_HS_ULPI_D2, ETH_MII_RXD3, EVENTOUT; ADC12_IN9."
      },
      {
        "number": "K6",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply pin for the MCU, 1.7 V to 3.6 V application supply and I/Os."
      },
      {
        "number": "K7",
        "name": "PF14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions FMC_A8, EVENTOUT."
      },
      {
        "number": "K8",
        "name": "PE9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM1_CH1, FMC_D6, EVENTOUT."
      },
      {
        "number": "K9",
        "name": "PE15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM1_BKIN, FMC_D12, LCD_R7, EVENTOUT."
      },
      {
        "number": "K10",
        "name": "PH9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions I2C3_SMBA, TIM12_CH2, FMC_D17, DCMI_D0, LCD_R3, EVENTOUT."
      },
      {
        "number": "K11",
        "name": "PD10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions USART3_CK, FMC_D15, LCD_B3, EVENTOUT."
      },
      {
        "number": "K12",
        "name": "PD13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM4_CH2, FMC_A18, EVENTOUT."
      },
      {
        "number": "K13",
        "name": "PD9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions USART3_RX, FMC_D14, EVENTOUT."
      },
      {
        "number": "L1",
        "name": "PH3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions ETH_MII_COL, FMC_SDNE0, LCD_R1, EVENTOUT."
      },
      {
        "number": "L2",
        "name": "PH2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions ETH_MII_CRS, FMC_SDCKE0, LCD_R0, EVENTOUT."
      },
      {
        "number": "L3",
        "name": "PH5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions I2C2_SDA, SPI5_NSS, FMC_SDNWE, EVENTOUT."
      },
      {
        "number": "L4",
        "name": "PC4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except analog mode); alternate functions ETH_MII_RXD0/ETH_RMII_RXD0, EVENTOUT; ADC12_IN14."
      },
      {
        "number": "L5",
        "name": "PB2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); BOOT1 function on this pin with EVENTOUT."
      },
      {
        "number": "L6",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply pin for the MCU, 1.7 V to 3.6 V application supply and I/Os."
      },
      {
        "number": "L7",
        "name": "PF15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions FMC_A9, EVENTOUT."
      },
      {
        "number": "L8",
        "name": "PE10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM1_CH2N, FMC_D7, EVENTOUT."
      },
      {
        "number": "L9",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM2_CH3, I2C2_SCL, SPI2_SCK/I2S2_CK, USART3_TX, OTG_HS_ULPI_D3, ETH_MII_RX_ER, LCD_G4, EVENTOUT."
      },
      {
        "number": "L10",
        "name": "PH8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions I2C3_SDA, FMC_D16, DCMI_HSYNC, LCD_R2, EVENTOUT."
      },
      {
        "number": "L11",
        "name": "PH12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM5_CH3, FMC_D20, DCMI_D3, LCD_R6, EVENTOUT."
      },
      {
        "number": "L12",
        "name": "PD8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions USART3_TX, FMC_D13, EVENTOUT."
      },
      {
        "number": "L13",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions RTC_REFIN, TIM1_CH3N, TIM8_CH3N, SPI2_MOSI/I2S2_SD, TIM12_CH2, OTG_HS_DP, EVENTOUT."
      },
      {
        "number": "M1",
        "name": "BYPASS_REG",
        "type": "input",
        "description": "Regulator bypass control input (5 V-tolerant); tying it to VDD selects Regulator OFF/internal reset ON mode."
      },
      {
        "number": "M2",
        "name": "PH4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions I2C2_SCL, OTG_HS_ULPI_NXT, EVENTOUT."
      },
      {
        "number": "M3",
        "name": "PA5",
        "type": "bidirectional",
        "description": "3.3 V-tolerant I/O (TTa) connected directly to ADC; alternate functions TIM2_CH1/TIM2_ETR, TIM8_CH1N, SPI1_SCK, OTG_HS_ULPI_CK, EVENTOUT; ADC12_IN5/DAC_OUT2."
      },
      {
        "number": "M4",
        "name": "PC5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except analog mode); alternate functions ETH_MII_RXD1/ETH_RMII_RXD1, EVENTOUT; ADC12_IN15."
      },
      {
        "number": "M5",
        "name": "PF11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions SPI5_MOSI, FMC_SDNRAS, DCMI_D12, EVENTOUT."
      },
      {
        "number": "M6",
        "name": "PF13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions FMC_A7, EVENTOUT."
      },
      {
        "number": "M7",
        "name": "PG1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions FMC_A11, EVENTOUT."
      },
      {
        "number": "M8",
        "name": "PE11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM1_CH2, SPI4_NSS, FMC_D8, LCD_G3, EVENTOUT."
      },
      {
        "number": "M9",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM2_CH4, I2C2_SDA, USART3_RX, OTG_HS_ULPI_D4, ETH_MII_TX_EN/ETH_RMII_TX_EN, LCD_G5, EVENTOUT."
      },
      {
        "number": "M10",
        "name": "PH7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions I2C3_SCL, SPI5_MISO, ETH_MII_RXD3, FMC_SDCKE1, DCMI_D9, EVENTOUT."
      },
      {
        "number": "M11",
        "name": "PH11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM5_CH2, FMC_D19, DCMI_D2, LCD_R5, EVENTOUT."
      },
      {
        "number": "M12",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM1_CH1N, SPI2_SCK/I2S2_CK, USART3_CTS, CAN2_TX, OTG_HS_ULPI_D6, ETH_MII_TXD1/ETH_RMII_TXD1, EVENTOUT; OTG_HS_VBUS."
      },
      {
        "number": "M13",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM1_CH2N, TIM8_CH2N, SPI2_MISO, I2S2ext_SD, USART3_RTS, TIM12_CH1, OTG_HS_DM, EVENTOUT."
      },
      {
        "number": "N1",
        "name": "NC",
        "type": "unconnected",
        "description": "Corner ball, not bonded internally, and should be left not connected on the PCB."
      },
      {
        "number": "N2",
        "name": "PA4",
        "type": "bidirectional",
        "description": "3.3 V-tolerant I/O (TTa) connected directly to ADC; alternate functions SPI1_NSS, SPI3_NSS/I2S3_WS, USART2_CK, OTG_HS_SOF, DCMI_HSYNC, LCD_VSYNC, EVENTOUT; ADC12_IN4/DAC_OUT1."
      },
      {
        "number": "N3",
        "name": "PA6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except analog mode); alternate functions TIM1_BKIN, TIM3_CH1, TIM8_BKIN, SPI1_MISO, TIM13_CH1, DCMI_PIXCLK, LCD_G2, EVENTOUT; ADC12_IN6."
      },
      {
        "number": "N4",
        "name": "PB0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT, except analog mode); alternate functions TIM1_CH2N, TIM3_CH3, TIM8_CH2N, LCD_R3, OTG_HS_ULPI_D1, ETH_MII_RXD2, EVENTOUT; ADC12_IN8."
      },
      {
        "number": "N5",
        "name": "PF12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions FMC_A6, EVENTOUT."
      },
      {
        "number": "N6",
        "name": "PG0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions FMC_A10, EVENTOUT."
      },
      {
        "number": "N7",
        "name": "PE7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM1_ETR, UART7_Rx, FMC_D4, EVENTOUT."
      },
      {
        "number": "N8",
        "name": "PE12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM1_CH3N, SPI4_SCK, FMC_D9, LCD_B4, EVENTOUT."
      },
      {
        "number": "N9",
        "name": "VCAP_1",
        "type": "power_in",
        "description": "VCAP1 pin of the internal voltage regulator, connected to its external capacitor (see Section 6.3.2)."
      },
      {
        "number": "N10",
        "name": "PH6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions I2C2_SMBA, SPI5_SCK, TIM12_CH1, ETH_MII_RXD2, FMC_SDNE1, DCMI_D8, EVENTOUT."
      },
      {
        "number": "N11",
        "name": "PH10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM5_CH1, FMC_D18, DCMI_D1, LCD_R4, EVENTOUT."
      },
      {
        "number": "N12",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM1_BKIN, I2C2_SMBA, SPI2_NSS/I2S2_WS, USART3_CK, CAN2_RX, OTG_HS_ULPI_D5, ETH_MII_TXD0/ETH_RMII_TXD0, OTG_HS_ID, EVENTOUT."
      },
      {
        "number": "N13",
        "name": "NC",
        "type": "unconnected",
        "description": "Corner ball, not bonded internally, and should be left not connected on the PCB."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Ball-to-pin mapping taken from the UFBGA169 column of Table 10 (page 53-70). The text of Figure 16 (; Pins with NC in the UFBGA169 column of Table 10 have no ball on this package and are omitted: PI8, P; Corner balls A1, A13, N1 and N13 are not in Table 10 for this package; they are included as unconnec",
          "4/169 pins cited to the wrong page (name found elsewhere): ['A1:NC@p50', 'A13:NC@p50', 'N1:NC@p50', 'N13:NC@p50']"
        ],
        "pages_sent": 91,
        "cost_usd": 0.5562,
        "at": "2026-10-07T23:11:34"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588895693394087936",
        "pages": 240,
        "sha256": "2aa9c826cc4304f2",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 169,
        "described": 169,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "stm32f427aih6.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7,
          7,
          0.756
        ],
        "zmin_mm": -0.006,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "a0c5401996f4c93f939f166e68f53259ab3812993dedd97af91e41a86e22ab6a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm32f427aih6-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7,
          7,
          0.756
        ],
        "zmin_mm": -0.006,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "71b2f84d6ab193c43824aeeffac38ef68d9db2b0b8c7ab9b4315bb4547859900",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "UFBGA-169",
      "Category": "Embedded Processors & Controllers",
      "Pins": "169"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "stm32f427aih6"
  ],
  "discovery_pitch": "STM32F427AIH6 (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "stm32f427aih6.kicad_sym",
    "stm32f427aih6.kicad_mod",
    "stm32f427aih6.glb",
    "stm32f427aih6.step",
    "stm32f427aih6.lbr",
    "docs/hero.png",
    "docs/stm32f427aih6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "stm32f427aih6-hero.glb",
    "stm32f427aih6-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}