STM32F446ZET7

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm32f446zet7",
  "title": "STM32F446ZET7",
  "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",
    "stm32f446zet7",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STM32F446ZET7",
    "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/8590916625695141888",
    "parts": {
      "symbol": "stm32f446zet7.kicad_sym",
      "footprint": "stm32f446zet7.kicad_mod",
      "model_3d": "stm32f446zet7-hero.glb",
      "model_3d_plain": "stm32f446zet7.glb",
      "model_3d_step": "stm32f446zet7-etched.step",
      "model_3d_step_plain": "stm32f446zet7.step",
      "lbr": "stm32f446zet7.lbr"
    },
    "distributor_links": {
      "lcsc": "C2970508",
      "digikey": "497-16778-ND",
      "mouser": "511-STM32F446ZET7"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T20:27:23Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-16778-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32F446ZET7",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PE2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TRACECLK, SPI4_SCK, SAI1_MCLK_A, QUADSPI_BK1_IO2, FMC_A23, EVENTOUT."
      },
      {
        "number": "2",
        "name": "PE3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TRACED0, SAI1_SD_B, FMC_A19, EVENTOUT."
      },
      {
        "number": "3",
        "name": "PE4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TRACED1, SPI4_NSS, SAI1_FS_A, FMC_A20, DCMI_D4, EVENTOUT."
      },
      {
        "number": "4",
        "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, EVENTOUT."
      },
      {
        "number": "5",
        "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, EVENTOUT."
      },
      {
        "number": "6",
        "name": "VBAT",
        "type": "power_in",
        "description": "Supply for the RTC, the 20x32-bit backup registers and the optional 4 KB backup SRAM (VBAT supply)."
      },
      {
        "number": "7",
        "name": "PC13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate function: EVENTOUT; additional function: TAMP_1/WKUP1."
      },
      {
        "number": "8",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate function: EVENTOUT; additional function: OSC32_IN (32 kHz oscillator input for the RTC)."
      },
      {
        "number": "9",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate function: EVENTOUT; additional function: OSC32_OUT (32 kHz oscillator output for the RTC)."
      },
      {
        "number": "10",
        "name": "PF0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: I2C2_SDA, FMC_A0, EVENTOUT."
      },
      {
        "number": "11",
        "name": "PF1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: I2C2_SCL, FMC_A1, EVENTOUT."
      },
      {
        "number": "12",
        "name": "PF2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: I2C2_SMBA, FMC_A2, EVENTOUT."
      },
      {
        "number": "13",
        "name": "PF3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: FMC_A3, EVENTOUT; additional function: ADC3_IN9."
      },
      {
        "number": "14",
        "name": "PF4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: FMC_A4, EVENTOUT; additional function: ADC3_IN14."
      },
      {
        "number": "15",
        "name": "PF5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: FMC_A5, EVENTOUT; additional function: ADC3_IN15."
      },
      {
        "number": "16",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "17",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V."
      },
      {
        "number": "18",
        "name": "PF6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM10_CH1, SAI1_SD_B, QUADSPI_BK1_IO3, EVENTOUT; additional function: ADC3_IN4."
      },
      {
        "number": "19",
        "name": "PF7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM11_CH1, SAI1_MCLK_B, QUADSPI_BK1_IO2, EVENTOUT; additional function: ADC3_IN5."
      },
      {
        "number": "20",
        "name": "PF8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: SAI1_SCK_B, TIM13_CH1, QUADSPI_BK1_IO0, EVENTOUT; additional function: ADC3_IN6."
      },
      {
        "number": "21",
        "name": "PF9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: SAI1_FS_B, TIM14_CH1, QUADSPI_BK1_IO1, EVENTOUT; additional function: ADC3_IN7."
      },
      {
        "number": "22",
        "name": "PF10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: DCMI_D11, EVENTOUT; additional function: ADC3_IN8."
      },
      {
        "number": "23",
        "name": "PH0-OSC_IN",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate function: EVENTOUT; additional function: OSC_IN (crystal oscillator input)."
      },
      {
        "number": "24",
        "name": "PH1-OSC_OUT",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate function: EVENTOUT; additional function: OSC_OUT (crystal oscillator output)."
      },
      {
        "number": "25",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Bidirectional reset pin with weak pull-up resistor (RST I/O structure)."
      },
      {
        "number": "26",
        "name": "PC0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: SAI1_MCLK_B, OTG_HS_ULPI_STP, FMC_SDNWE, EVENTOUT; additional function: ADC123_IN10."
      },
      {
        "number": "27",
        "name": "PC1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: SPI3_MOSI/I2S3_SD, SAI1_SD_A, SPI2_MOSI/I2S2_SD, EVENTOUT; additional function: ADC123_IN11."
      },
      {
        "number": "28",
        "name": "PC2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: SPI2_MISO, OTG_HS_ULPI_DIR, FMC_SDNE0, EVENTOUT; additional function: ADC123_IN12."
      },
      {
        "number": "29",
        "name": "PC3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: SPI2_MOSI/I2S2_SD, OTG_HS_ULPI_NXT, FMC_SDCKE0, EVENTOUT; additional function: ADC123_IN13."
      },
      {
        "number": "30",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V."
      },
      {
        "number": "31",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground pin."
      },
      {
        "number": "32",
        "name": "VREF+",
        "type": "power_in",
        "description": "Input voltage reference VREF+ for the ADC and DAC."
      },
      {
        "number": "33",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply pin; no voltage range for this pin is given in the datasheet text provided."
      },
      {
        "number": "34",
        "name": "PA0-WKUP",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM2_CH1/TIM2_ETR, TIM5_CH1, TIM8_ETR, USART2_CTS, UART4_TX, EVENTOUT; additional functions: ADC123_IN0, WKUP0/TAMP_2."
      },
      {
        "number": "35",
        "name": "PA1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM2_CH2, TIM5_CH2, USART2_RTS, UART4_RX, QUADSPI_BK1_IO3, SAI2_MCLK_B, EVENTOUT; additional function: ADC123_IN1."
      },
      {
        "number": "36",
        "name": "PA2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM2_CH3, TIM5_CH3, TIM9_CH1, USART2_TX, SAI2_SCK_B, EVENTOUT; additional function: ADC123_IN2."
      },
      {
        "number": "37",
        "name": "PA3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM2_CH4, TIM5_CH4, TIM9_CH2, SAI1_FS_A, USART2_RX, OTG_HS_ULPI_D0, EVENTOUT; additional function: ADC123_IN3."
      },
      {
        "number": "38",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "39",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V."
      },
      {
        "number": "40",
        "name": "PA4",
        "type": "bidirectional",
        "description": "3.3 V-tolerant I/O (TTa) directly connected to the ADC; alternate functions: SPI1_NSS/I2S1_WS, SPI3_NSS/I2S3_WS, USART2_CK, OTG_HS_SOF, DCMI_HSYNC, EVENTOUT; additional functions: ADC12_IN4, DAC_OUT1."
      },
      {
        "number": "41",
        "name": "PA5",
        "type": "bidirectional",
        "description": "3.3 V-tolerant I/O (TTa) directly connected to the ADC; alternate functions: TIM2_CH1/TIM2_ETR, TIM8_CH1N, SPI1_SCK/I2S1_CK, OTG_HS_ULPI_CK, EVENTOUT; additional functions: ADC12_IN5, DAC_OUT2."
      },
      {
        "number": "42",
        "name": "PA6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM1_BKIN, TIM3_CH1, TIM8_BKIN, SPI1_MISO, I2S2_MCK, TIM13_CH1, DCMI_PIXCLK, EVENTOUT; additional function: ADC12_IN6."
      },
      {
        "number": "43",
        "name": "PA7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM1_CH1N, TIM3_CH2, TIM8_CH1N, SPI1_MOSI/I2S1_SD, TIM14_CH1, FMC_SDNWE, EVENTOUT; additional function: ADC12_IN7."
      },
      {
        "number": "44",
        "name": "PC4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: I2S1_MCK, SPDIFRX_IN2, FMC_SDNE0, EVENTOUT; additional function: ADC12_IN14."
      },
      {
        "number": "45",
        "name": "PC5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: USART3_RX, SPDIFRX_IN3, FMC_SDCKE0, EVENTOUT; additional function: ADC12_IN15."
      },
      {
        "number": "46",
        "name": "PB0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM1_CH2N, TIM3_CH3, TIM8_CH2N, SPI3_MOSI/I2S3_SD, UART4_CTS, OTG_HS_ULPI_D1, SDIO_D1, EVENTOUT; additional function: ADC12_IN8."
      },
      {
        "number": "47",
        "name": "PB1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM1_CH3N, TIM3_CH4, TIM8_CH3N, OTG_HS_ULPI_D2, SDIO_D2, EVENTOUT; additional function: ADC12_IN9."
      },
      {
        "number": "48",
        "name": "PB2-BOOT1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM2_CH4, SAI1_SD_A, SPI3_MOSI/I2S3_SD, QUADSPI_CLK, OTG_HS_ULPI_D4, SDIO_CK, EVENTOUT; BOOT1 is the function of this pin after reset-option configuration as printed in the table."
      },
      {
        "number": "49",
        "name": "PF11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: SAI2_SD_B, FMC_SDNRAS, DCMI_D12, EVENTOUT."
      },
      {
        "number": "50",
        "name": "PF12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: FMC_A6, EVENTOUT."
      },
      {
        "number": "51",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "52",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V."
      },
      {
        "number": "53",
        "name": "PF13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: FMPI2C1_SMBA, FMC_A7, EVENTOUT."
      },
      {
        "number": "54",
        "name": "PF14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+ option (FTf); alternate functions: FMPI2C1_SCL, FMC_A8, EVENTOUT."
      },
      {
        "number": "55",
        "name": "PF15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+ option (FTf); alternate functions: FMPI2C1_SDA, FMC_A9, EVENTOUT."
      },
      {
        "number": "56",
        "name": "PG0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: FMC_A10, EVENTOUT."
      },
      {
        "number": "57",
        "name": "PG1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: FMC_A11, EVENTOUT."
      },
      {
        "number": "58",
        "name": "PE7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM1_ETR, UART5_RX, QUADSPI_BK2_IO0, FMC_D4, EVENTOUT."
      },
      {
        "number": "59",
        "name": "PE8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM1_CH1N, UART5_TX, QUADSPI_BK2_IO1, FMC_D5, EVENTOUT."
      },
      {
        "number": "60",
        "name": "PE9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM1_CH1, QUADSPI_BK2_IO2, FMC_D6, EVENTOUT."
      },
      {
        "number": "61",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "62",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V."
      },
      {
        "number": "63",
        "name": "PE10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM1_CH2N, QUADSPI_BK2_IO3, FMC_D7, EVENTOUT."
      },
      {
        "number": "64",
        "name": "PE11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM1_CH2, SPI4_NSS, SAI2_SD_B, FMC_D8, EVENTOUT."
      },
      {
        "number": "65",
        "name": "PE12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM1_CH3N, SPI4_SCK, SAI2_SCK_B, FMC_D9, EVENTOUT."
      },
      {
        "number": "66",
        "name": "PE13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM1_CH3, SPI4_MISO, SAI2_FS_B, FMC_D10, EVENTOUT."
      },
      {
        "number": "67",
        "name": "PE14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM1_CH4, SPI4_MOSI, SAI2_MCLK_B, FMC_D11, EVENTOUT."
      },
      {
        "number": "68",
        "name": "PE15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM1_BKIN, FMC_D12, EVENTOUT."
      },
      {
        "number": "69",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM2_CH3, I2C2_SCL, SPI2_SCK/I2S2_CK, SAI1_SCK_A, USART3_TX, OTG_HS_ULPI_D3, EVENTOUT."
      },
      {
        "number": "70",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM2_CH4, I2C2_SDA, USART3_RX, SAI2_SD_A, EVENTOUT."
      },
      {
        "number": "71",
        "name": "VCAP_1",
        "type": "power_in",
        "description": "Voltage regulator external capacitor connection (VCAP_1), see the VCAP_1/VCAP_2 external capacitor conditions."
      },
      {
        "number": "72",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V."
      },
      {
        "number": "73",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM1_BKIN, I2C2_SMBA, SPI2_NSS/I2S2_WS, SAI1_SCK_B, USART3_CK, CAN2_RX, OTG_HS_ULPI_D5, OTG_HS_ID, EVENTOUT."
      },
      {
        "number": "74",
        "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, EVENTOUT; additional function: OTG_HS_VBUS."
      },
      {
        "number": "75",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) supplied by VDDUSB; alternate functions: TIM1_CH2N, TIM8_CH2N, SPI2_MISO, USART3_RTS, TIM12_CH1, OTG_HS_DM, EVENTOUT."
      },
      {
        "number": "76",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) supplied by VDDUSB; alternate functions: RTC_REFIN, TIM1_CH3N, TIM8_CH3N, SPI2_MOSI/I2S2_SD, TIM12_CH2, OTG_HS_DP, EVENTOUT."
      },
      {
        "number": "77",
        "name": "PD8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: USART3_TX, SPDIFRX_IN1, FMC_D13, EVENTOUT."
      },
      {
        "number": "78",
        "name": "PD9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: USART3_RX, FMC_D14, EVENTOUT."
      },
      {
        "number": "79",
        "name": "PD10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: USART3_CK, FMC_D15, EVENTOUT."
      },
      {
        "number": "80",
        "name": "PD11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: FMPI2C1_SMBA, USART3_CTS, QUADSPI_BK1_IO0, SAI2_SD_A, FMC_A16, EVENTOUT."
      },
      {
        "number": "81",
        "name": "PD12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+ option (FTf); alternate functions: TIM4_CH1, FMPI2C1_SCL, USART3_RTS, QUADSPI_BK1_IO1, SAI2_FS_A, FMC_A17, EVENTOUT."
      },
      {
        "number": "82",
        "name": "PD13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+ option (FTf); alternate functions: TIM4_CH2, FMPI2C1_SDA, QUADSPI_BK1_IO3, SAI2_SCK_A, FMC_A18, EVENTOUT."
      },
      {
        "number": "83",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "84",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V."
      },
      {
        "number": "85",
        "name": "PD14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+ option (FTf); alternate functions: TIM4_CH3, FMPI2C1_SCL, SAI2_SCK_A, FMC_D0, EVENTOUT."
      },
      {
        "number": "86",
        "name": "PD15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+ option (FTf); alternate functions: TIM4_CH4, FMPI2C1_SDA, FMC_D1, EVENTOUT."
      },
      {
        "number": "87",
        "name": "PG2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: FMC_A12, EVENTOUT."
      },
      {
        "number": "88",
        "name": "PG3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: FMC_A13, EVENTOUT."
      },
      {
        "number": "89",
        "name": "PG4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: FMC_A14/FMC_BA0, EVENTOUT."
      },
      {
        "number": "90",
        "name": "PG5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: FMC_A15/FMC_BA1, EVENTOUT."
      },
      {
        "number": "91",
        "name": "PG6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: QUADSPI_BK1_NCS, DCMI_D12, EVENTOUT."
      },
      {
        "number": "92",
        "name": "PG7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: USART6_CK, FMC_INT, DCMI_D13, EVENTOUT."
      },
      {
        "number": "93",
        "name": "PG8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: SPDIFRX_IN2, USART6_RTS, FMC_SDCLK, EVENTOUT."
      },
      {
        "number": "94",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "95",
        "name": "VDDUSB",
        "type": "power_in",
        "description": "Dedicated USB power rail enabling the on-chip USB PHYs to operate across the entire MCU supply range; also supplies PA11, PA12, PB14 and PB15."
      },
      {
        "number": "96",
        "name": "PC6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+ option (FTf); alternate functions: TIM3_CH1, TIM8_CH1, FMPI2C1_SCL, I2S2_MCK, USART6_TX, SDIO_D6, DCMI_D0, EVENTOUT."
      },
      {
        "number": "97",
        "name": "PC7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+ option (FTf); alternate functions: TIM3_CH2, TIM8_CH2, FMPI2C1_SDA, SPI2_SCK/I2S2_CK, I2S3_MCK, SPDIFRX_IN1, USART6_RX, SDIO_D7, DCMI_D1, EVENTOUT."
      },
      {
        "number": "98",
        "name": "PC8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TRACED0, TIM3_CH3, TIM8_CH3, UART5_RTS, USART6_CK, SDIO_D0, DCMI_D2, EVENTOUT."
      },
      {
        "number": "99",
        "name": "PC9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: MCO2, TIM3_CH4, TIM8_CH4, I2C3_SDA, I2S_CKIN, UART5_CTS, QUADSPI_BK1_IO0, SDIO_D1, DCMI_D3, EVENTOUT."
      },
      {
        "number": "100",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: MCO1, TIM1_CH1, I2C3_SCL, USART1_CK, OTG_FS_SOF, EVENTOUT."
      },
      {
        "number": "101",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM1_CH2, I2C3_SMBA, SPI2_SCK/I2S2_CK, SAI1_SD_B, USART1_TX, DCMI_D0, EVENTOUT; additional function: OTG_FS_VBUS."
      },
      {
        "number": "102",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM1_CH3, USART1_RX, OTG_FS_ID, DCMI_D1, EVENTOUT."
      },
      {
        "number": "103",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) supplied by VDDUSB; alternate functions: TIM1_CH4, USART1_CTS, CAN1_RX, OTG_FS_DM, EVENTOUT."
      },
      {
        "number": "104",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) supplied by VDDUSB; alternate functions: TIM1_ETR, USART1_RTS, SAI2_FS_B, CAN1_TX, OTG_FS_DP, EVENTOUT."
      },
      {
        "number": "105",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate function: JTMS-SWDIO (SWD data I/O, shared with JTAG TMS), EVENTOUT."
      },
      {
        "number": "106",
        "name": "VCAP_2",
        "type": "power_in",
        "description": "Voltage regulator external capacitor connection (VCAP_2), see the VCAP_1/VCAP_2 external capacitor conditions."
      },
      {
        "number": "107",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "108",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V."
      },
      {
        "number": "109",
        "name": "PA14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate function: JTCK-SWCLK (SWD clock, shared with JTAG TCK), EVENTOUT."
      },
      {
        "number": "110",
        "name": "PA15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: JTDI, TIM2_CH1/TIM2_ETR, HDMI_CEC, SPI1_NSS/I2S1_WS, SPI3_NSS/I2S3_WS, UART4_RTS, EVENTOUT."
      },
      {
        "number": "111",
        "name": "PC10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: SPI3_SCK/I2S3_CK, USART3_TX, UART4_TX, QUADSPI_BK1_IO1, SDIO_D2, DCMI_D8, EVENTOUT."
      },
      {
        "number": "112",
        "name": "PC11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: SPI3_MISO, USART3_RX, UART4_RX, QUADSPI_BK2_NCS, SDIO_D3, DCMI_D4, EVENTOUT."
      },
      {
        "number": "113",
        "name": "PC12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: I2C2_SDA, SPI3_MOSI/I2S3_SD, USART3_CK, UART5_TX, SDIO_CK, DCMI_D9, EVENTOUT."
      },
      {
        "number": "114",
        "name": "PD0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: SPI4_MISO, SPI3_MOSI/I2S3_SD, CAN1_RX, FMC_D2, EVENTOUT."
      },
      {
        "number": "115",
        "name": "PD1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: SPI2_NSS/I2S2_WS, CAN1_TX, FMC_D3, EVENTOUT."
      },
      {
        "number": "116",
        "name": "PD2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM3_ETR, UART5_RX, SDIO_CMD, DCMI_D11, EVENTOUT."
      },
      {
        "number": "117",
        "name": "PD3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TRACED1, SPI2_SCK/I2S2_CK, USART2_CTS, QUADSPI_CLK, FMC_CLK, DCMI_D5, EVENTOUT."
      },
      {
        "number": "118",
        "name": "PD4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: USART2_RTS, FMC_NOE, EVENTOUT."
      },
      {
        "number": "119",
        "name": "PD5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: USART2_TX, FMC_NWE, EVENTOUT."
      },
      {
        "number": "120",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "121",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V."
      },
      {
        "number": "122",
        "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, EVENTOUT."
      },
      {
        "number": "123",
        "name": "PD7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: USART2_CK, SPDIFRX_IN0, FMC_NE1, EVENTOUT."
      },
      {
        "number": "124",
        "name": "PG9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: SPDIFRX_IN3, USART6_RX, QUADSPI_BK2_IO2, SAI2_FS_B, FMC_NE2/FMC_NCE3, DCMI_VSYNC (silicon revision 3 only), EVENTOUT."
      },
      {
        "number": "125",
        "name": "PG10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: SAI2_SD_B, FMC_NE3, DCMI_D2, EVENTOUT."
      },
      {
        "number": "126",
        "name": "PG11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: SPI4_SCK, SPDIFRX_IN0, DCMI_D3, EVENTOUT."
      },
      {
        "number": "127",
        "name": "PG12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: SPI4_MISO, SPDIFRX_IN1, USART6_RTS, FMC_NE4, EVENTOUT."
      },
      {
        "number": "128",
        "name": "PG13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TRACED2, SPI4_MOSI, USART6_CTS, FMC_A24, EVENTOUT."
      },
      {
        "number": "129",
        "name": "PG14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TRACED3, SPI4_NSS, USART6_TX, QUADSPI_BK2_IO3, FMC_A25, EVENTOUT."
      },
      {
        "number": "130",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "131",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply pin; the application supply and I/Os range is 1.7 V to 3.6 V."
      },
      {
        "number": "132",
        "name": "PG15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: USART6_CTS, FMC_SDNCAS, DCMI_D13, EVENTOUT."
      },
      {
        "number": "133",
        "name": "PB3-JTDO/TRACESWO",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate function: JTDO/TRACESWO (JTAG output / trace SWO), TIM2_CH2, I2C2_SDA, SPI1_SCK/I2S1_CK, SPI3_SCK/I2S3_CK, EVENTOUT."
      },
      {
        "number": "134",
        "name": "PB4(NJTRST)",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: NJTRST (JTAG reset, active low), TIM3_CH1, I2C3_SDA, SPI1_MISO, SPI3_MISO, SPI2_NSS/I2S2_WS, EVENTOUT."
      },
      {
        "number": "135",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM3_CH2, I2C1_SMBA, SPI1_MOSI/I2S1_SD, SPI3_MOSI/I2S3_SD, CAN2_RX, OTG_HS_ULPI_D7, FMC_SDCKE1, DCMI_D10, EVENTOUT."
      },
      {
        "number": "136",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM4_CH1, HDMI_CEC, I2C1_SCL, USART1_TX, CAN2_TX, QUADSPI_BK1_NCS, FMC_SDNE1, DCMI_D5, EVENTOUT."
      },
      {
        "number": "137",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM4_CH2, I2C1_SDA, USART1_RX, SPDIFRX_IN0, FMC_NL, DCMI_VSYNC, EVENTOUT."
      },
      {
        "number": "138",
        "name": "BOOT0",
        "type": "input",
        "description": "Dedicated BOOT0 input-only pin (B structure) with VPP as its listed function."
      },
      {
        "number": "139",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM2_CH1/TIM2_ETR, TIM4_CH3, TIM10_CH1, I2C1_SCL, CAN1_RX, SDIO_D4, DCMI_D6, EVENTOUT."
      },
      {
        "number": "140",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM2_CH2, TIM4_CH4, TIM11_CH1, I2C1_SDA, SPI2_NSS/I2S2_WS, SAI1_FS_B, CAN1_TX, SDIO_D5, DCMI_D7, EVENTOUT."
      },
      {
        "number": "141",
        "name": "PE0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: TIM4_ETR, SAI2_MCLK_A, FMC_NBL0, DCMI_D2, EVENTOUT."
      },
      {
        "number": "142",
        "name": "PE1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions: FMC_NBL1, DCMI_D3, EVENTOUT."
      },
      {
        "number": "143",
        "name": "PDR_ON",
        "type": "power_in",
        "description": "Supply-type pin (S) listed in Table 10; its power-down reset function is described in the power supply supervisor section, which is not in this excerpt."
      },
      {
        "number": "144",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply pin; the application supply and I/Os range is 1.7 V 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-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: MPN suffix 'T7' (ordering/temperature/packing code) is not explained in the provided text; the order; Figure 12 is titled 'STM32F446xC LQFP144 pinout'; the pin list was built from Table 10, which covers; VCAP_1 (pin 71) and VCAP_2 (pin 106) are labelled type S in Table 10 and were kept as power_in per t"
        ],
        "pages_sent": 64,
        "cost_usd": 0.4325,
        "at": "2026-10-08T20:26:12"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590916625695141888",
        "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
      }
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      "footprint": "viewers/footprint.html"
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        "file": "stm32f446zet7.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          22,
          22,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b4d698da8bb7697b754adb5655c932342462d9b9341cdaa081b3604dbdf7559b",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm32f446zet7-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "43270bc7d537253e348caa267ba3d9b334fe4a24433225e7494b1229bca55b70",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "LQFP-144(20x20)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "144"
    }
  },
  "variants": [],
  "sections": [
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    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "stm32f446zet7"
  ],
  "discovery_pitch": "STM32F446ZET7 (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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