STM32F446ZET6

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm32f446zet6",
  "title": "STM32F446ZET6",
  "brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-144(20x20). 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",
    "stm32f446zet6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STM32F446ZET6",
    "manufacturer": "STMicroelectronics",
    "package": "LQFP-144(20x20)",
    "pin_count": 144,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588893368735191040",
    "parts": {
      "symbol": "stm32f446zet6.kicad_sym",
      "footprint": "stm32f446zet6.kicad_mod",
      "model_3d": "stm32f446zet6-hero.glb",
      "model_3d_plain": "stm32f446zet6.glb",
      "model_3d_step": "stm32f446zet6-etched.step",
      "model_3d_step_plain": "stm32f446zet6.step",
      "lbr": "stm32f446zet6.lbr"
    },
    "distributor_links": {
      "lcsc": "C1337227",
      "digikey": "497-15374-ND",
      "mouser": "511-STM32F446ZET6"
    },
    "distributor_check": {
      "checked_at": "2026-10-05T22:18:29Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-15374-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32F446ZET6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PE2",
        "type": "output",
        "description": "GPIO Port E bit 2, 5V-tolerant I/O with alternate functions TRACECLK, SPI4_SCK, SAI1_MCLK_A, QUADSPI_BK1_IO2, FMC_A23."
      },
      {
        "number": "2",
        "name": "PE3",
        "type": "output",
        "description": "GPIO Port E bit 3, 5V-tolerant I/O with alternate functions TRACED0, SAI1_SD_B, FMC_A19."
      },
      {
        "number": "3",
        "name": "PE4",
        "type": "output",
        "description": "GPIO Port E bit 4, 5V-tolerant I/O with alternate functions TRACED1, SPI4_NSS, SAI1_FS_A, FMC_A20, DCMI_D4."
      },
      {
        "number": "4",
        "name": "PE5",
        "type": "output",
        "description": "GPIO Port E bit 5, 5V-tolerant I/O with alternate functions TRACED2, TIM9_CH1, SPI4_MISO, SAI1_SCK_A, FMC_A21, DCMI_D6."
      },
      {
        "number": "5",
        "name": "PE6",
        "type": "output",
        "description": "GPIO Port E bit 6, 5V-tolerant I/O with alternate functions TRACED3, TIM9_CH2, SPI4_MOSI, SAI1_SD_A, FMC_A22, DCMI_D7."
      },
      {
        "number": "6",
        "name": "VBAT",
        "type": "power_in",
        "description": "Battery backup voltage supply pin, 1.7 to 3.6 V."
      },
      {
        "number": "7",
        "name": "PC13",
        "type": "output",
        "description": "GPIO Port C bit 13, 5V-tolerant I/O, backup domain pin with tamper and wakeup alternate functions."
      },
      {
        "number": "8",
        "name": "PC14-OSC32_IN",
        "type": "output",
        "description": "GPIO Port C bit 14, 5V-tolerant I/O, 32 kHz oscillator input (OSC32_IN)."
      },
      {
        "number": "9",
        "name": "PC15-OSC32_OUT",
        "type": "output",
        "description": "GPIO Port E bit 15, 5V-tolerant I/O, 32 kHz oscillator output (OSC32_OUT)."
      },
      {
        "number": "10",
        "name": "PF0",
        "type": "output",
        "description": "GPIO Port F bit 0, 5V-tolerant I/O with alternate functions I2C2_SDA, FMC_A0."
      },
      {
        "number": "11",
        "name": "PF1",
        "type": "output",
        "description": "GPIO Port F bit 1, 5V-tolerant I/O with alternate functions I2C2_SCL, FMC_A1."
      },
      {
        "number": "12",
        "name": "PF2",
        "type": "output",
        "description": "GPIO Port F bit 2, 5V-tolerant I/O with alternate functions I2C2_SMBA, FMC_A2."
      },
      {
        "number": "13",
        "name": "PF3",
        "type": "output",
        "description": "GPIO Port F bit 3, 5V-tolerant I/O, ADC3_IN9 input, alternate function FMC_A3."
      },
      {
        "number": "14",
        "name": "PF4",
        "type": "output",
        "description": "GPIO Port F bit 4, 5V-tolerant I/O, ADC3_IN14 input, alternate function FMC_A4."
      },
      {
        "number": "15",
        "name": "PF5",
        "type": "output",
        "description": "GPIO Port F bit 5, 5V-tolerant I/O, ADC3_IN15 input, alternate function FMC_A5."
      },
      {
        "number": "16",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground supply pin."
      },
      {
        "number": "17",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply pin, 1.7 to 3.6 V."
      },
      {
        "number": "18",
        "name": "PF6",
        "type": "output",
        "description": "GPIO Port F bit 6, 5V-tolerant I/O, ADC3_IN4 input, alternate functions TIM10_CH1, SAI1_SD_B, QUADSPI_BK1_IO3."
      },
      {
        "number": "19",
        "name": "PF7",
        "type": "output",
        "description": "GPIO Port F bit 7, 5V-tolerant I/O, ADC3_IN5 input, alternate functions TIM11_CH1, SAI1_MCLK_B, QUADSPI_BK1_IO2."
      },
      {
        "number": "20",
        "name": "PF8",
        "type": "output",
        "description": "GPIO Port F bit 8, 5V-tolerant I/O, ADC3_IN6 input, alternate functions SAI1_SCK_B, TIM13_CH1, QUADSPI_BK1_IO0."
      },
      {
        "number": "21",
        "name": "PF9",
        "type": "output",
        "description": "GPIO Port F bit 9, 5V-tolerant I/O, ADC3_IN7 input, alternate functions SAI1_FS_B, TIM14_CH1, QUADSPI_BK1_IO1."
      },
      {
        "number": "22",
        "name": "PF10",
        "type": "output",
        "description": "GPIO Port F bit 10, 5V-tolerant I/O, ADC3_IN8 input, alternate function DCMI_D11."
      },
      {
        "number": "23",
        "name": "PH0-OSC_IN",
        "type": "output",
        "description": "GPIO Port H bit 0, 5V-tolerant I/O, main oscillator input (OSC_IN)."
      },
      {
        "number": "24",
        "name": "PH1-OSC_OUT",
        "type": "output",
        "description": "GPIO Port H bit 1, 5V-tolerant I/O, main oscillator output (OSC_OUT)."
      },
      {
        "number": "25",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Active-low reset input with weak pull-up resistor, bidirectional reset pin with hysteresis."
      },
      {
        "number": "26",
        "name": "PC0",
        "type": "output",
        "description": "GPIO Port C bit 0, 5V-tolerant I/O, ADC123_IN10 input, alternate functions SAI1_MCLK_B, OTG_HS_ULPI_STP, FMC_SDNWE."
      },
      {
        "number": "27",
        "name": "PC1",
        "type": "output",
        "description": "GPIO Port C bit 1, 5V-tolerant I/O, ADC123_IN11 input, alternate functions SPI3_MOSI/I2S3_SD, SAI1_SD_A, SPI2_MOSI/I2S2_SD."
      },
      {
        "number": "28",
        "name": "PC2",
        "type": "output",
        "description": "GPIO Port C bit 2, 5V-tolerant I/O, ADC123_IN12 input, alternate functions SPI2_MISO, OTG_HS_ULPI_DIR, FMC_SDNE0."
      },
      {
        "number": "29",
        "name": "PC3",
        "type": "output",
        "description": "GPIO Port C bit 3, 5V-tolerant I/O, ADC123_IN13 input, alternate functions SPI2_MOSI/I2S2_SD, OTG_HS_ULPI_NXT, FMC_SDCKE0."
      },
      {
        "number": "30",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply pin, 1.7 to 3.6 V."
      },
      {
        "number": "31",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground supply pin."
      },
      {
        "number": "32",
        "name": "VREF+",
        "type": "power_in",
        "description": "ADC reference voltage supply pin, 1.7 to 3.6 V."
      },
      {
        "number": "33",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog power supply pin, 1.7 to 3.6 V."
      },
      {
        "number": "34",
        "name": "PA0-WKUP",
        "type": "output",
        "description": "GPIO Port A bit 0, 5V-tolerant I/O, ADC123_IN0 input, wakeup pin alternate functions TIM2_CH1, TIM5_CH1, TIM8_ETR, USART2_CTS, UART4_TX."
      },
      {
        "number": "35",
        "name": "PA1",
        "type": "output",
        "description": "GPIO Port A bit 1, 5V-tolerant I/O, ADC123_IN1 input, alternate functions TIM2_CH2, TIM5_CH2, USART2_RTS, UART4_RX, QUADSPI_BK1_IO3, SAI2_MCLK_B."
      },
      {
        "number": "36",
        "name": "PA2",
        "type": "output",
        "description": "GPIO Port A bit 2, 5V-tolerant I/O, ADC123_IN2 input, alternate functions TIM2_CH3, TIM5_CH3, TIM9_CH1, USART2_TX, SAI2_SCK_B."
      },
      {
        "number": "37",
        "name": "PA3",
        "type": "output",
        "description": "GPIO Port A bit 3, 5V-tolerant I/O, ADC123_IN3 input, alternate functions TIM2_CH4, TIM5_CH4, TIM9_CH2, SAI1_FS_A, USART2_RX, OTG_HS_ULPI_D0."
      },
      {
        "number": "38",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground supply pin."
      },
      {
        "number": "39",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply pin, 1.7 to 3.6 V."
      },
      {
        "number": "40",
        "name": "PA4",
        "type": "output",
        "description": "GPIO Port A bit 4, 3.3V-tolerant I/O, ADC12_IN4 input, DAC_OUT1 output, alternate functions SPI1_NSS/I2S1_WS, SPI3_NSS/I2S3_WS, USART2_CK, OTG_HS_SOF, DCMI_HSYNC."
      },
      {
        "number": "41",
        "name": "PA5",
        "type": "output",
        "description": "GPIO Port A bit 5, 3.3V-tolerant I/O, ADC12_IN5 input, DAC_OUT2 output, alternate functions TIM2_CH1/TIM2_ETR, TIM8_CH1N, SPI1_SCK/I2S1_CK, OTG_HS_ULPI_CK."
      },
      {
        "number": "42",
        "name": "PA6",
        "type": "output",
        "description": "GPIO Port A bit 6, 5V-tolerant I/O, ADC12_IN6 input, alternate functions TIM1_BKIN, TIM3_CH1, TIM8_BKIN, SPI1_MISO, I2S2_MCK, TIM13_CH1, DCMI_PIXCLK."
      },
      {
        "number": "43",
        "name": "PA7",
        "type": "output",
        "description": "GPIO Port A bit 7, 5V-tolerant I/O, ADC12_IN7 input, alternate functions TIM1_CH1N, TIM3_CH2, TIM8_CH1N, SPI1_MOSI/I2S1_SD, TIM14_CH1, FMC_SDNWE."
      },
      {
        "number": "44",
        "name": "PC4",
        "type": "output",
        "description": "GPIO Port C bit 4, 5V-tolerant I/O, ADC12_IN14 input, alternate functions I2S1_MCK, SPDIFRX_IN2, FMC_SDNE0."
      },
      {
        "number": "45",
        "name": "PC5",
        "type": "output",
        "description": "GPIO Port C bit 5, 5V-tolerant I/O, ADC12_IN15 input, alternate functions USART3_RX, SPDIFRX_IN3, FMC_SDCKE0."
      },
      {
        "number": "46",
        "name": "PB0",
        "type": "output",
        "description": "GPIO Port B bit 0, 5V-tolerant I/O, ADC12_IN8 input, alternate functions TIM1_CH2N, TIM3_CH3, TIM8_CH2N, SPI3_MOSI/I2S3_SD, UART4_CTS, OTG_HS_ULPI_D1, SDIO_D1."
      },
      {
        "number": "47",
        "name": "PB1",
        "type": "output",
        "description": "GPIO Port B bit 1, 5V-tolerant I/O, ADC12_IN9 input, alternate functions TIM1_CH3N, TIM3_CH4, TIM8_CH3N, OTG_HS_ULPI_D2, SDIO_D2."
      },
      {
        "number": "48",
        "name": "PB2-BOOT1",
        "type": "output",
        "description": "GPIO Port B bit 2, 5V-tolerant I/O, alternate functions TIM2_CH4, SAI1_SD_A, SPI3_MOSI/I2S3_SD, QUADSPI_CLK, OTG_HS_ULPI_D4, SDIO_CK."
      },
      {
        "number": "49",
        "name": "PF11",
        "type": "output",
        "description": "GPIO Port F bit 11, 5V-tolerant I/O, alternate functions SAI2_SD_B, FMC_SDNRAS, DCMI_D12."
      },
      {
        "number": "50",
        "name": "PF12",
        "type": "output",
        "description": "GPIO Port F bit 12, 5V-tolerant I/O, alternate function FMC_A6."
      },
      {
        "number": "51",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground supply pin."
      },
      {
        "number": "52",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply pin, 1.7 to 3.6 V."
      },
      {
        "number": "53",
        "name": "PF13",
        "type": "output",
        "description": "GPIO Port F bit 13, 5V-tolerant I/O, alternate functions FMPI2C1_SMBA, FMC_A7."
      },
      {
        "number": "54",
        "name": "PF14",
        "type": "output",
        "description": "GPIO Port F bit 14, 5V-tolerant FM+ I/O, alternate functions FMPI2C1_SCL, FMC_A8."
      },
      {
        "number": "55",
        "name": "PF15",
        "type": "output",
        "description": "GPIO Port F bit 15, 5V-tolerant FM+ I/O, alternate functions FMPI2C1_SDA, FMC_A9."
      },
      {
        "number": "56",
        "name": "PG0",
        "type": "output",
        "description": "GPIO Port G bit 0, 5V-tolerant I/O, alternate function FMC_A10."
      },
      {
        "number": "57",
        "name": "PG1",
        "type": "output",
        "description": "GPIO Port G bit 1, 5V-tolerant I/O, alternate function FMC_A11."
      },
      {
        "number": "58",
        "name": "PE7",
        "type": "output",
        "description": "GPIO Port E bit 7, 5V-tolerant I/O, alternate functions TIM1_ETR, UART5_RX, QUADSPI_BK2_IO0, FMC_D4."
      },
      {
        "number": "59",
        "name": "PE8",
        "type": "output",
        "description": "GPIO Port E bit 8, 5V-tolerant I/O, alternate functions TIM1_CH1N, UART5_TX, QUADSPI_BK2_IO1, FMC_D5."
      },
      {
        "number": "60",
        "name": "PE9",
        "type": "output",
        "description": "GPIO Port E bit 9, 5V-tolerant I/O, alternate functions TIM1_CH1, QUADSPI_BK2_IO2, FMC_D6."
      },
      {
        "number": "61",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground supply pin."
      },
      {
        "number": "62",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply pin, 1.7 to 3.6 V."
      },
      {
        "number": "63",
        "name": "PE10",
        "type": "output",
        "description": "GPIO Port E bit 10, 5V-tolerant I/O, alternate functions TIM1_CH2N, QUADSPI_BK2_IO3, FMC_D7."
      },
      {
        "number": "64",
        "name": "PE11",
        "type": "output",
        "description": "GPIO Port E bit 11, 5V-tolerant I/O, alternate functions TIM1_CH2, SPI4_NSS, SAI2_SD_B, FMC_D8."
      },
      {
        "number": "65",
        "name": "PE12",
        "type": "output",
        "description": "GPIO Port E bit 12, 5V-tolerant I/O, alternate functions TIM1_CH3N, SPI4_SCK, SAI2_SCK_B, FMC_D9."
      },
      {
        "number": "66",
        "name": "PE13",
        "type": "output",
        "description": "GPIO Port E bit 13, 5V-tolerant I/O, alternate functions TIM1_CH3, SPI4_MISO, SAI2_FS_B, FMC_D10."
      },
      {
        "number": "67",
        "name": "PE14",
        "type": "output",
        "description": "GPIO Port E bit 14, 5V-tolerant I/O, alternate functions TIM1_CH4, SPI4_MOSI, SAI2_MCLK_B, FMC_D11."
      },
      {
        "number": "68",
        "name": "PE15",
        "type": "output",
        "description": "GPIO Port E bit 15, 5V-tolerant I/O, alternate functions TIM1_BKIN, FMC_D12."
      },
      {
        "number": "69",
        "name": "PB10",
        "type": "output",
        "description": "GPIO Port B bit 10, 5V-tolerant I/O, alternate functions TIM2_CH3, I2C2_SCL, SPI2_SCK/I2S2_CK, SAI1_SCK_A, USART3_TX, OTG_HS_ULPI_D3."
      },
      {
        "number": "70",
        "name": "PB11",
        "type": "output",
        "description": "GPIO Port B bit 11, 5V-tolerant I/O, alternate functions TIM2_CH4, I2C2_SDA, USART3_RX, SAI2_SD_A."
      },
      {
        "number": "71",
        "name": "VCAP_1",
        "type": "power_in",
        "description": "External capacitor supply pin for internal regulator, connect 100 nF to 1 µF capacitor to VSS."
      },
      {
        "number": "72",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply pin, 1.7 to 3.6 V."
      },
      {
        "number": "73",
        "name": "PB12",
        "type": "output",
        "description": "GPIO Port B bit 12, 5V-tolerant I/O, alternate functions TIM1_BKIN, I2C2_SMBA, SPI2_NSS/I2S2_WS, SAI1_SCK_B, USART3_CK, CAN2_RX, OTG_HS_ULPI_D5, OTG_HS_ID."
      },
      {
        "number": "74",
        "name": "PB13",
        "type": "output",
        "description": "GPIO Port B bit 13, 5V-tolerant I/O, OTG_HS_VBUS input, alternate functions TIM1_CH1N, SPI2_SCK/I2S2_CK, USART3_CTS, CAN2_TX, OTG_HS_ULPI_D6."
      },
      {
        "number": "75",
        "name": "PB14",
        "type": "output",
        "description": "GPIO Port B bit 14, 5V-tolerant I/O supplied by VDDUSB, alternate functions TIM1_CH2N, TIM8_CH2N, SPI2_MISO, USART3_RTS, TIM12_CH1, OTG_HS_DM."
      },
      {
        "number": "76",
        "name": "PB15",
        "type": "output",
        "description": "GPIO Port B bit 15, 5V-tolerant I/O supplied by VDDUSB, alternate functions RTC_REFIN, TIM1_CH3N, TIM8_CH3N, SPI2_MOSI/I2S2_SD, TIM12_CH2, OTG_HS_DP."
      },
      {
        "number": "77",
        "name": "PD8",
        "type": "output",
        "description": "GPIO Port D bit 8, 5V-tolerant I/O, alternate functions USART3_TX, SPDIFRX_IN1, FMC_D13."
      },
      {
        "number": "78",
        "name": "PD9",
        "type": "output",
        "description": "GPIO Port D bit 9, 5V-tolerant I/O, alternate functions USART3_RX, FMC_D14."
      },
      {
        "number": "79",
        "name": "PD10",
        "type": "output",
        "description": "GPIO Port D bit 10, 5V-tolerant I/O, alternate functions USART3_CK, FMC_D15."
      },
      {
        "number": "80",
        "name": "PD11",
        "type": "output",
        "description": "GPIO Port D bit 11, 5V-tolerant I/O, alternate functions FMPI2C1_SMBA, USART3_CTS, QUADSPI_BK1_IO0, SAI2_SD_A, FMC_A16."
      },
      {
        "number": "81",
        "name": "PD12",
        "type": "output",
        "description": "GPIO Port D bit 12, 5V-tolerant FM+ I/O, alternate functions TIM4_CH1, FMPI2C1_SCL, USART3_RTS, QUADSPI_BK1_IO1, SAI2_FS_A, FMC_A17."
      },
      {
        "number": "82",
        "name": "PD13",
        "type": "output",
        "description": "GPIO Port D bit 13, 5V-tolerant FM+ I/O, alternate functions TIM4_CH2, FMPI2C1_SDA, QUADSPI_BK1_IO3, SAI2_SCK_A, FMC_A18."
      },
      {
        "number": "83",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground supply pin."
      },
      {
        "number": "84",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply pin, 1.7 to 3.6 V."
      },
      {
        "number": "85",
        "name": "PD14",
        "type": "output",
        "description": "GPIO Port D bit 14, 5V-tolerant FM+ I/O, alternate functions TIM4_CH3, FMPI2C1_SCL, SAI2_SCK_A, FMC_D0."
      },
      {
        "number": "86",
        "name": "PD15",
        "type": "output",
        "description": "GPIO Port D bit 15, 5V-tolerant FM+ I/O, alternate functions TIM4_CH4, FMPI2C1_SDA, FMC_D1."
      },
      {
        "number": "87",
        "name": "PG2",
        "type": "output",
        "description": "GPIO Port G bit 2, 5V-tolerant I/O, alternate function FMC_A12."
      },
      {
        "number": "88",
        "name": "PG3",
        "type": "output",
        "description": "GPIO Port G bit 3, 5V-tolerant I/O, alternate function FMC_A13."
      },
      {
        "number": "89",
        "name": "PG4",
        "type": "output",
        "description": "GPIO Port G bit 4, 5V-tolerant I/O, alternate functions FMC_A14/FMC_BA0."
      },
      {
        "number": "90",
        "name": "PG5",
        "type": "output",
        "description": "GPIO Port G bit 5, 5V-tolerant I/O, alternate functions FMC_A15/FMC_BA1."
      },
      {
        "number": "91",
        "name": "PG6",
        "type": "output",
        "description": "GPIO Port G bit 6, 5V-tolerant I/O, alternate functions QUADSPI_BK1_NCS, DCMI_D12."
      },
      {
        "number": "92",
        "name": "PG7",
        "type": "output",
        "description": "GPIO Port G bit 7, 5V-tolerant I/O, alternate functions USART6_CK, FMC_INT, DCMI_D13."
      },
      {
        "number": "93",
        "name": "PG8",
        "type": "output",
        "description": "GPIO Port G bit 8, 5V-tolerant I/O, alternate functions SPDIFRX_IN2, USART6_RTS, FMC_SDCLK."
      },
      {
        "number": "94",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground supply pin."
      },
      {
        "number": "95",
        "name": "VDDUSB",
        "type": "power_in",
        "description": "USB supply pin for OTG PHYs, 3.3 V ±5%, separate from main VDD to enable independent power management."
      },
      {
        "number": "96",
        "name": "PC6",
        "type": "output",
        "description": "GPIO Port C bit 6, 5V-tolerant FM+ I/O, alternate functions TIM3_CH1, TIM8_CH1, FMPI2C1_SCL, I2S2_MCK, USART6_TX, SDIO_D6, DCMI_D0."
      },
      {
        "number": "97",
        "name": "PC7",
        "type": "output",
        "description": "GPIO Port C bit 7, 5V-tolerant FM+ I/O, alternate functions TIM3_CH2, TIM8_CH2, FMPI2C1_SDA, SPI2_SCK/I2S2_CK, I2S3_MCK, SPDIFRX_IN1, USART6_RX, SDIO_D7, DCMI_D1."
      },
      {
        "number": "98",
        "name": "PC8",
        "type": "output",
        "description": "GPIO Port C bit 8, 5V-tolerant I/O, alternate functions TRACED0, TIM3_CH3, TIM8_CH3, UART5_RTS, USART6_CK, SDIO_D0, DCMI_D2."
      },
      {
        "number": "99",
        "name": "PC9",
        "type": "output",
        "description": "GPIO Port C bit 9, 5V-tolerant I/O, alternate functions MCO2, TIM3_CH4, TIM8_CH4, I2C3_SDA, I2S_CKIN, UART5_CTS, QUADSPI_BK1_IO0, SDIO_D1, DCMI_D3."
      },
      {
        "number": "100",
        "name": "PA8",
        "type": "output",
        "description": "GPIO Port A bit 8, 5V-tolerant I/O, alternate functions MCO1, TIM1_CH1, I2C3_SCL, USART1_CK, OTG_FS_SOF."
      },
      {
        "number": "101",
        "name": "PA9",
        "type": "output",
        "description": "GPIO Port A bit 9, 5V-tolerant I/O, OTG_FS_VBUS input, alternate functions TIM1_CH2, I2C3_SMBA, SPI2_SCK/I2S2_CK, SAI1_SD_B, USART1_TX, DCMI_D0."
      },
      {
        "number": "102",
        "name": "PA10",
        "type": "output",
        "description": "GPIO Port A bit 10, 5V-tolerant I/O, alternate functions TIM1_CH3, USART1_RX, OTG_FS_ID, DCMI_D1."
      },
      {
        "number": "103",
        "name": "PA11",
        "type": "output",
        "description": "GPIO Port A bit 11, 5V-tolerant I/O supplied by VDDUSB, alternate functions TIM1_CH4, USART1_CTS, CAN1_RX, OTG_FS_DM."
      },
      {
        "number": "104",
        "name": "PA12",
        "type": "output",
        "description": "GPIO Port A bit 12, 5V-tolerant I/O supplied by VDDUSB, alternate functions TIM1_ETR, USART1_RTS, SAI2_FS_B, CAN1_TX, OTG_FS_DP."
      },
      {
        "number": "105",
        "name": "PA13",
        "type": "output",
        "description": "GPIO Port A bit 13, 5V-tolerant I/O, JTAG/SWD interface pin (JTMS-SWDIO)."
      },
      {
        "number": "106",
        "name": "VCAP_2",
        "type": "power_in",
        "description": "External capacitor supply pin for internal regulator, connect 100 nF to 1 µF capacitor to VSS."
      },
      {
        "number": "107",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground supply pin."
      },
      {
        "number": "108",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply pin, 1.7 to 3.6 V."
      },
      {
        "number": "109",
        "name": "PA14",
        "type": "output",
        "description": "GPIO Port A bit 14, 5V-tolerant I/O, JTAG/SWD interface pin (JTCK-SWCLK)."
      },
      {
        "number": "110",
        "name": "PA15",
        "type": "output",
        "description": "GPIO Port A bit 15, 5V-tolerant I/O, JTAG interface pin (JTDI), alternate functions TIM2_CH1/TIM2_ETR, HDMI_CEC, SPI1_NSS/I2S1_WS, SPI3_NSS/I2S3_WS, UART4_RTS."
      },
      {
        "number": "111",
        "name": "PC10",
        "type": "output",
        "description": "GPIO Port C bit 10, 5V-tolerant I/O, alternate functions SPI3_SCK/I2S3_CK, USART3_TX, UART4_TX, QUADSPI_BK1_IO1, SDIO_D2, DCMI_D8."
      },
      {
        "number": "112",
        "name": "PC11",
        "type": "output",
        "description": "GPIO Port C bit 11, 5V-tolerant I/O, alternate functions SPI3_MISO, USART3_RX, UART4_RX, QUADSPI_BK2_NCS, SDIO_D3, DCMI_D4."
      },
      {
        "number": "113",
        "name": "PC12",
        "type": "output",
        "description": "GPIO Port C bit 12, 5V-tolerant I/O, alternate functions I2C2_SDA, SPI3_MOSI/I2S3_SD, USART3_CK, UART5_TX, SDIO_CK, DCMI_D9."
      },
      {
        "number": "114",
        "name": "PD0",
        "type": "output",
        "description": "GPIO Port D bit 0, 5V-tolerant I/O, alternate functions SPI4_MISO, SPI3_MOSI/I2S3_SD, CAN1_RX, FMC_D2."
      },
      {
        "number": "115",
        "name": "PD1",
        "type": "output",
        "description": "GPIO Port D bit 1, 5V-tolerant I/O, alternate functions SPI2_NSS/I2S2_WS, CAN1_TX, FMC_D3."
      },
      {
        "number": "116",
        "name": "PD2",
        "type": "output",
        "description": "GPIO Port D bit 2, 5V-tolerant I/O, alternate functions TIM3_ETR, UART5_RX, SDIO_CMD, DCMI_D11."
      },
      {
        "number": "117",
        "name": "PD3",
        "type": "output",
        "description": "GPIO Port D bit 3, 5V-tolerant I/O, alternate functions TRACED1, SPI2_SCK/I2S2_CK, USART2_CTS, QUADSPI_CLK, FMC_CLK, DCMI_D5."
      },
      {
        "number": "118",
        "name": "PD4",
        "type": "output",
        "description": "GPIO Port D bit 4, 5V-tolerant I/O, alternate functions USART2_RTS, FMC_NOE."
      },
      {
        "number": "119",
        "name": "PD5",
        "type": "output",
        "description": "GPIO Port D bit 5, 5V-tolerant I/O, alternate functions USART2_TX, FMC_NWE."
      },
      {
        "number": "120",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground supply pin."
      },
      {
        "number": "121",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply pin, 1.7 to 3.6 V."
      },
      {
        "number": "122",
        "name": "PD6",
        "type": "output",
        "description": "GPIO Port D bit 6, 5V-tolerant I/O, alternate functions SPI3_MOSI/I2S3_SD, SAI1_SD_A, USART2_RX, FMC_NWAIT, DCMI_D10."
      },
      {
        "number": "123",
        "name": "PD7",
        "type": "output",
        "description": "GPIO Port D bit 7, 5V-tolerant I/O, alternate functions USART2_CK, SPDIFRX_IN0, FMC_NE1."
      },
      {
        "number": "124",
        "name": "PG9",
        "type": "output",
        "description": "GPIO Port G bit 9, 5V-tolerant I/O, alternate functions SPDIFRX_IN3, USART6_RX, QUADSPI_BK2_IO2, SAI2_FS_B, FMC_NE2/FMC_NCE3, DCMI_VSYNC."
      },
      {
        "number": "125",
        "name": "PG10",
        "type": "output",
        "description": "GPIO Port G bit 10, 5V-tolerant I/O, alternate functions SAI2_SD_B, FMC_NE3, DCMI_D2."
      },
      {
        "number": "126",
        "name": "PG11",
        "type": "output",
        "description": "GPIO Port G bit 11, 5V-tolerant I/O, alternate functions SPI4_SCK, SPDIFRX_IN0, DCMI_D3."
      },
      {
        "number": "127",
        "name": "PG12",
        "type": "output",
        "description": "GPIO Port G bit 12, 5V-tolerant I/O, alternate functions SPI4_MISO, SPDIFRX_IN1, USART6_RTS, FMC_NE4."
      },
      {
        "number": "128",
        "name": "PG13",
        "type": "output",
        "description": "GPIO Port G bit 13, 5V-tolerant I/O, alternate functions TRACED2, SPI4_MOSI, USART6_CTS, FMC_A24."
      },
      {
        "number": "129",
        "name": "PG14",
        "type": "output",
        "description": "GPIO Port G bit 14, 5V-tolerant I/O, alternate functions TRACED3, SPI4_NSS, USART6_TX, QUADSPI_BK2_IO3, FMC_A25."
      },
      {
        "number": "130",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground supply pin."
      },
      {
        "number": "131",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply pin, 1.7 to 3.6 V."
      },
      {
        "number": "132",
        "name": "PG15",
        "type": "output",
        "description": "GPIO Port G bit 15, 5V-tolerant I/O, alternate functions USART6_CTS, FMC_SDNCAS, DCMI_D13."
      },
      {
        "number": "133",
        "name": "PB3",
        "type": "output",
        "description": "GPIO Port B bit 3, 5V-tolerant I/O, JTAG interface pin (JTDO/TRACESWO), alternate functions TIM2_CH2, I2C2_SDA, SPI1_SCK/I2S1_CK, SPI3_SCK/I2S3_CK."
      },
      {
        "number": "134",
        "name": "PB4",
        "type": "output",
        "description": "GPIO Port B bit 4, 5V-tolerant I/O, JTAG interface pin (NJTRST), alternate functions TIM3_CH1, I2C3_SDA, SPI1_MISO, SPI3_MISO, SPI2_NSS/I2S2_WS."
      },
      {
        "number": "135",
        "name": "PB5",
        "type": "output",
        "description": "GPIO Port B bit 5, 5V-tolerant I/O, alternate functions TIM3_CH2, I2C1_SMBA, SPI1_MOSI/I2S1_SD, SPI3_MOSI/I2S3_SD, CAN2_RX, OTG_HS_ULPI_D7, FMC_SDCKE1, DCMI_D10."
      },
      {
        "number": "136",
        "name": "PB6",
        "type": "output",
        "description": "GPIO Port B bit 6, 5V-tolerant I/O, alternate functions TIM4_CH1, HDMI_CEC, I2C1_SCL, USART1_TX, CAN2_TX, QUADSPI_BK1_NCS, FMC_SDNE1, DCMI_D5."
      },
      {
        "number": "137",
        "name": "PB7",
        "type": "output",
        "description": "GPIO Port B bit 7, 5V-tolerant I/O, alternate functions TIM4_CH2, I2C1_SDA, USART1_RX, SPDIFRX_IN0, FMC_NL, DCMI_VSYNC."
      },
      {
        "number": "138",
        "name": "BOOT0",
        "type": "input",
        "description": "Boot select input pin, pull-down for boot from internal Flash, pull-up for boot from system memory, alternate function VPP for flash programming."
      },
      {
        "number": "139",
        "name": "PB8",
        "type": "output",
        "description": "GPIO Port B bit 8, 5V-tolerant I/O, alternate functions TIM2_CH1/TIM2_ETR, TIM4_CH3, TIM10_CH1, I2C1_SCL, CAN1_RX, SDIO_D4, DCMI_D6."
      },
      {
        "number": "140",
        "name": "PB9",
        "type": "output",
        "description": "GPIO Port B bit 9, 5V-tolerant I/O, alternate functions TIM2_CH2, TIM4_CH4, TIM11_CH1, I2C1_SDA, SPI2_NSS/I2S2_WS, SAI1_FS_B, CAN1_TX, SDIO_D5, DCMI_D7."
      },
      {
        "number": "141",
        "name": "PE0",
        "type": "output",
        "description": "GPIO Port E bit 0, 5V-tolerant I/O, alternate functions TIM4_ETR, SAI2_MCLK_A, FMC_NBL0, DCMI_D2."
      },
      {
        "number": "142",
        "name": "PE1",
        "type": "output",
        "description": "GPIO Port E bit 1, 5V-tolerant I/O, alternate functions FMC_NBL1, DCMI_D3."
      },
      {
        "number": "143",
        "name": "PDR_ON",
        "type": "power_in",
        "description": "Power-down reset control pin, supply voltage for power-down reset function."
      },
      {
        "number": "144",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply pin, 1.7 to 3.6 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin type classification for GPIO outputs: GPIO pins are typically classified as bidirectional in KiC"
        ],
        "pages_sent": 64,
        "cost_usd": 0.6224,
        "at": "2026-10-05T22:17:49"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588893368735191040",
        "pages": 198,
        "sha256": "3902cf9f939a0ef6",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 144,
        "described": 144,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "LQFP-144(20x20)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "144"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "stm32f446zet6"
  ],
  "discovery_pitch": "STM32F446ZET6 (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",
    "stm32f446zet6.kicad_sym",
    "stm32f446zet6.kicad_mod",
    "stm32f446zet6.glb",
    "stm32f446zet6.step",
    "stm32f446zet6.lbr",
    "docs/hero.png",
    "docs/stm32f446zet6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "stm32f446zet6-hero.glb",
    "stm32f446zet6-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}