STM32H755ZIT6

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm32h755zit6",
  "title": "STM32H755ZIT6",
  "brief": "STMicroelectronics Global Sourcing Parts, 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",
    "global sourcing parts",
    "stm32h755zit6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STM32H755ZIT6",
    "manufacturer": "STMicroelectronics",
    "package": "LQFP-144(20x20)",
    "pin_count": 144,
    "category": "Global Sourcing Parts",
    "subcategory": "Global Sourcing Parts",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588907786503114752",
    "parts": {
      "symbol": "stm32h755zit6.kicad_sym",
      "footprint": "stm32h755zit6.kicad_mod",
      "model_3d": "stm32h755zit6-hero.glb",
      "model_3d_plain": "stm32h755zit6.glb",
      "model_3d_step": "stm32h755zit6-etched.step",
      "model_3d_step_plain": "stm32h755zit6.step",
      "lbr": "stm32h755zit6.lbr"
    },
    "distributor_links": {
      "lcsc": "C730212",
      "digikey": "STM32H755ZIT6-ND",
      "mouser": "511-STM32H755ZIT6"
    },
    "distributor_check": {
      "checked_at": "2026-10-10T17:45:42Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "STM32H755ZIT6-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32H755ZIT6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PE2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed low-voltage option (FT_h); alternate functions include TRACECLK, SAI1_CK1, SPI4_SCK, QUADSPI_BK1_IO2 and FMC_A23."
      },
      {
        "number": "2",
        "name": "PE3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed low-voltage option (FT_h); alternate functions include TRACED0, TIM15_BKIN, SAI1_SD_B and FMC_A19."
      },
      {
        "number": "3",
        "name": "PE4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed low-voltage option (FT_h); alternate functions include TRACED1, SAI1_D2, DFSDM1_DATIN3, SPI4_NSS and DCMI_D4."
      },
      {
        "number": "4",
        "name": "PE5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed low-voltage option (FT_h); alternate functions include TRACED2, SAI1_CK2, SPI4_MISO, FMC_A21 and DCMI_D6."
      },
      {
        "number": "5",
        "name": "PE6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed low-voltage option (FT_h); alternate functions include TRACED3, TIM1_BKIN2, SAI1_D1, SPI4_MOSI and FMC_A22."
      },
      {
        "number": "6",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; all VSS pins must be at the same potential, with ground variations limited to 50 mV."
      },
      {
        "number": "7",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital and I/O supply pin of the 1.62 to 3.6 V application supply; VDD pin-to-pin variations within the domain are limited to 50 mV."
      },
      {
        "number": "8",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup-domain supply input, specified at 1.2 to 3.6 V VBAT supply, also supporting battery charging."
      },
      {
        "number": "9",
        "name": "PC13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with EVENTOUT function and additional RTC_TAMP1/RTC_TS/WKUP2 functions."
      },
      {
        "number": "10",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) that also serves as OSC32_IN; when configured as oscillator the function is kept during and after reset except power-on reset."
      },
      {
        "number": "11",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) that also serves as OSC32_OUT; when configured as oscillator the function is kept during and after reset except power-on reset."
      },
      {
        "number": "12",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; all VSS pins must be at the same potential, with ground variations limited to 50 mV."
      },
      {
        "number": "13",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital and I/O supply pin of the 1.62 to 3.6 V application supply; VDD pin-to-pin variations within the domain are limited to 50 mV."
      },
      {
        "number": "14",
        "name": "VSSSMPS",
        "type": "power_in",
        "description": "Ground pin dedicated to the SMPS step-down converter."
      },
      {
        "number": "15",
        "name": "VLXSMPS",
        "type": "power_out",
        "description": "Switching node of the SMPS step-down converter, which directly supplies VCORE and/or external circuitry."
      },
      {
        "number": "16",
        "name": "VDDSMPS",
        "type": "power_in",
        "description": "Supply input of the SMPS step-down converter; must be connected to the external power supply within the permitted range."
      },
      {
        "number": "17",
        "name": "VFBSMPS",
        "type": "power_in",
        "description": "Feedback pin of the SMPS step-down converter, used by the converter to regulate its output."
      },
      {
        "number": "18",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; all VSS pins must be at the same potential, with ground variations limited to 50 mV."
      },
      {
        "number": "19",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital and I/O supply pin of the 1.62 to 3.6 V application supply; VDD pin-to-pin variations within the domain are limited to 50 mV."
      },
      {
        "number": "20",
        "name": "PF6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed and analog options (FT_ha); ADC3_INN4 and ADC3_INP8 analog inputs; alternate functions include TIM16_CH1, SPI5_NSS, UART7_RX and QUADSPI_BK1_IO3."
      },
      {
        "number": "21",
        "name": "PF7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed and analog options (FT_ha); ADC3_INP3 analog input; alternate functions include TIM17_CH1, SPI5_SCK, UART7_TX and QUADSPI_BK1_IO2."
      },
      {
        "number": "22",
        "name": "PF8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed and analog options (FT_ha); ADC3_INN3 and ADC3_INP7 analog inputs; alternate functions include TIM16_CH1N, SPI5_MISO, TIM13_CH1 and QUADSPI_BK1_IO0."
      },
      {
        "number": "23",
        "name": "PF9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed and analog options (FT_ha); ADC3_INP2 analog input; alternate functions include TIM17_CH1N, SPI5_MOSI, TIM14_CH1 and QUADSPI_BK1_IO1."
      },
      {
        "number": "24",
        "name": "PF10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed and analog options (FT_ha); ADC3_INN2 and ADC3_INP6 analog inputs; alternate functions include TIM16_BKIN, SAI1_D3, QUADSPI_CLK, DCMI_D11 and LCD_DE."
      },
      {
        "number": "25",
        "name": "PH0-OSC_IN",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) that also serves as the OSC_IN oscillator input function."
      },
      {
        "number": "26",
        "name": "PH1-OSC_OUT",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) that also serves as the OSC_OUT oscillator output function."
      },
      {
        "number": "27",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Bidirectional reset pin with embedded weak pull-up resistor (RST structure)."
      },
      {
        "number": "28",
        "name": "PC0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with analog option (FT_a); ADC123_INP10 analog input; alternate functions include DFSDM1_CKIN0, SAI2_FS_B, OTG_HS_ULPI_STP and FMC_SDNWE."
      },
      {
        "number": "29",
        "name": "PC1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed and analog options (FT_ha); ADC123_INN10 and ADC123_INP11 analog inputs and RTC_TAMP3/WKUP5 additional functions; alternate functions include SAI1_D1, SPI2_MOSI/I2S2_SDO and ETH_MDC."
      },
      {
        "number": "30",
        "name": "PC2_C",
        "type": "passive",
        "description": "Analog pad of PC2 (TT_a structure, 3.3 V-tolerant) that is a separate pad from PC2 unless the analog switch is closed, with ADC3_INN1 and ADC3_INP0 analog inputs."
      },
      {
        "number": "31",
        "name": "PC3_C",
        "type": "passive",
        "description": "Analog pad of PC3 (TT_a structure, 3.3 V-tolerant) that is a separate pad from PC3 unless the analog switch is closed, with ADC3_INP1 analog input."
      },
      {
        "number": "32",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital and I/O supply pin of the 1.62 to 3.6 V application supply; VDD pin-to-pin variations within the domain are limited to 50 mV."
      },
      {
        "number": "33",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; all VSS pins must be at the same potential, with ground variations limited to 50 mV."
      },
      {
        "number": "34",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground pin for the analog domain (ADC, DAC, comparators, OPAMP and reference)."
      },
      {
        "number": "35",
        "name": "VREF+",
        "type": "power_in",
        "description": "Positive reference voltage pin for the ADC and DAC analog domain."
      },
      {
        "number": "36",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply pin for the ADC, DAC, OPAMP and comparators, referenced to VSSA."
      },
      {
        "number": "37",
        "name": "PA0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with analog option (FT_a); ADC1_INP16 analog input and WKUP0 wakeup function; alternate functions include TIM2_CH1/TIM2_ETR, USART2_CTS, UART4_TX and ETH_MII_CRS."
      },
      {
        "number": "38",
        "name": "PA1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed and analog options (FT_ha); ADC1_INN16 and ADC1_INP17 analog inputs; alternate functions include TIM2_CH2, USART2_RTS/USART2_DE, UART4_RX and LCD_R2."
      },
      {
        "number": "39",
        "name": "PA2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with analog option (FT_a); ADC12_INP14 analog input and WKUP1 wakeup function; alternate functions include TIM2_CH3, USART2_TX, ETH_MDIO and LCD_R1."
      },
      {
        "number": "40",
        "name": "PA3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed and analog options (FT_ha); ADC12_INP15 analog input; alternate functions include TIM2_CH4, USART2_RX, OTG_HS_ULPI_D0 and ETH_MII_COL."
      },
      {
        "number": "41",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; all VSS pins must be at the same potential, with ground variations limited to 50 mV."
      },
      {
        "number": "42",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital and I/O supply pin of the 1.62 to 3.6 V application supply; VDD pin-to-pin variations within the domain are limited to 50 mV."
      },
      {
        "number": "43",
        "name": "PA4",
        "type": "bidirectional",
        "description": "3.3 V-tolerant I/O with analog option (TT_a); ADC12_INP18 analog input and DAC1_OUT1 output; alternate functions include D1PWREN, SPI1_NSS/I2S1_WS, USART2_CK and DCMI_HSYNC."
      },
      {
        "number": "44",
        "name": "PA5",
        "type": "bidirectional",
        "description": "3.3 V-tolerant I/O with high-speed and analog options (TT_ha); ADC12_INN18 and ADC12_INP19 analog inputs and DAC1_OUT2 output; alternate functions include D2PWREN, TIM2_CH1/TIM2_ETR, SPI1_SCK/I2S1_CK and OTG_HS_ULPI_CK."
      },
      {
        "number": "45",
        "name": "PA6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with analog option (FT_a); ADC12_INP3 analog input; alternate functions include TIM1_BKIN, TIM3_CH1, SPI1_MISO/I2S1_SDI, TIM13_CH1 and DCMI_PIXCLK."
      },
      {
        "number": "46",
        "name": "PA7",
        "type": "bidirectional",
        "description": "3.3 V-tolerant I/O with analog option (TT_a); ADC12_INN3, ADC12_INP7 and OPAMP1_VINM analog functions; alternate functions include TIM1_CH1N, TIM3_CH2, SPI1_MOSI/I2S1_SDO and FMC_SDNWE."
      },
      {
        "number": "47",
        "name": "PC4",
        "type": "bidirectional",
        "description": "3.3 V-tolerant I/O with analog option (TT_a); ADC12_INP4, OPAMP1_VOUT and COMP1_INM analog functions; alternate functions include I2S1_MCK, SPDIFRX1_IN3, ETH_MII_RXD0 and FMC_SDNE0."
      },
      {
        "number": "48",
        "name": "PC5",
        "type": "bidirectional",
        "description": "3.3 V-tolerant I/O with analog option (TT_a); ADC12_INN4, ADC12_INP8 and OPAMP1_VINM analog functions; alternate functions include SAI1_D3, SPDIFRX1_IN4, ETH_MII_RXD1, FMC_SDCKE0 and COMP1_OUT."
      },
      {
        "number": "49",
        "name": "PB0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with analog option (FT_a); ADC12_INN5, ADC12_INP9, OPAMP1_VINP and COMP1_INP analog functions; alternate functions include TIM1_CH2N, TIM3_CH3, UART4_CTS and OTG_HS_ULPI_D1."
      },
      {
        "number": "50",
        "name": "PB1",
        "type": "bidirectional",
        "description": "3.3 V-tolerant USB-option I/O (TT_u, supplied by VDD33USB); ADC12_INP5 and COMP1_INM analog functions; alternate functions include TIM1_CH3N, TIM3_CH4, DFSDM1_DATIN1 and OTG_HS_ULPI_D2."
      },
      {
        "number": "51",
        "name": "PB2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed and analog options (FT_ha); COMP1_INP analog function; alternate functions include RTC_OUT, SAI1_D1, DFSDM1_CKIN1, SPI3_MOSI/I2S3_SDO and QUADSPI_CLK."
      },
      {
        "number": "52",
        "name": "PF11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with analog option (FT_a); ADC1_INP2 analog input; alternate functions include SPI5_MOSI, SAI2_SD_B, FMC_SDNRAS and DCMI_D12."
      },
      {
        "number": "53",
        "name": "PF14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+, high-speed and analog options (FT_fha); ADC2_INN2 and ADC2_INP6 analog inputs; alternate functions include DFSDM1_CKIN6, I2C4_SCL and FMC_A8."
      },
      {
        "number": "54",
        "name": "PF15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+ and high-speed options (FT_fh); alternate functions include I2C4_SDA and FMC_A9."
      },
      {
        "number": "55",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; all VSS pins must be at the same potential, with ground variations limited to 50 mV."
      },
      {
        "number": "56",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital and I/O supply pin of the 1.62 to 3.6 V application supply; VDD pin-to-pin variations within the domain are limited to 50 mV."
      },
      {
        "number": "57",
        "name": "PE7",
        "type": "bidirectional",
        "description": "3.3 V-tolerant I/O with high-speed and analog options (TT_ha); OPAMP2_VOUT and COMP2_INM analog functions; alternate functions include TIM1_ETR, DFSDM1_DATIN2, UART7_RX, QUADSPI_BK2_IO0 and FMC_D4."
      },
      {
        "number": "58",
        "name": "PE8",
        "type": "bidirectional",
        "description": "3.3 V-tolerant I/O with high-speed and analog options (TT_ha); OPAMP2_VINM and COMP2_OUT analog functions; alternate functions include TIM1_CH1N, DFSDM1_CKIN2, UART7_TX, QUADSPI_BK2_IO1 and FMC_D5."
      },
      {
        "number": "59",
        "name": "PE9",
        "type": "bidirectional",
        "description": "3.3 V-tolerant I/O with high-speed and analog options (TT_ha); OPAMP2_VINP and COMP2_INP analog functions; alternate functions include TIM1_CH1, DFSDM1_CKOUT, UART7_RTS/UART7_DE, QUADSPI_BK2_IO2 and FMC_D6."
      },
      {
        "number": "60",
        "name": "PE10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed and analog options (FT_ha); COMP2_INM analog function; alternate functions include TIM1_CH2N, DFSDM1_DATIN4, UART7_CTS, QUADSPI_BK2_IO3 and FMC_D7."
      },
      {
        "number": "61",
        "name": "PE11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed and analog options (FT_ha); COMP2_INP analog function; alternate functions include TIM1_CH2, SPI4_NSS, SAI2_SD_B, FMC_D8 and LCD_G3."
      },
      {
        "number": "62",
        "name": "PE12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include TIM1_CH3N, SPI4_SCK, SAI2_SCK_B, FMC_D9, COMP1_OUT and LCD_B4."
      },
      {
        "number": "63",
        "name": "PE13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include TIM1_CH3, SPI4_MISO, SAI2_FS_B, FMC_D10, COMP2_OUT and LCD_DE."
      },
      {
        "number": "64",
        "name": "PE14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include TIM1_CH4, SPI4_MOSI, SAI2_MCLK_B, FMC_D11 and LCD_CLK."
      },
      {
        "number": "65",
        "name": "PE15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include TIM1_BKIN, FMC_D12, TIM1_BKIN_COMP12 and LCD_R7."
      },
      {
        "number": "66",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+ option (FT_f); alternate functions include TIM2_CH3, HRTIM_SCOUT, I2C2_SCL, SPI2_SCK/I2S2_CK, USART3_TX, QUADSPI_BK1_NCS and OTG_HS_ULPI_D3."
      },
      {
        "number": "67",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+ option (FT_f); alternate functions include TIM2_CH4, HRTIM_SCIN, I2C2_SDA, USART3_RX, OTG_HS_ULPI_D4 and ETH_MII_TX_EN."
      },
      {
        "number": "68",
        "name": "VCAP",
        "type": "power_out",
        "description": "Main regulator stabilization pin; an external capacitor CEXT of 2.2 µF with ESR below 100 mΩ must be connected to it."
      },
      {
        "number": "69",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; all VSS pins must be at the same potential, with ground variations limited to 50 mV."
      },
      {
        "number": "70",
        "name": "VDDLDO",
        "type": "power_in",
        "description": "Supply input of the embedded LDO regulator that supplies the digital circuitry."
      },
      {
        "number": "71",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital and I/O supply pin of the 1.62 to 3.6 V application supply; VDD pin-to-pin variations within the domain are limited to 50 mV."
      },
      {
        "number": "72",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V-tolerant USB-option I/O (FT_u, supplied by VDD33USB); alternate functions include TIM1_BKIN, I2C2_SMBA, SPI2_NSS/I2S2_WS, USART3_CK, FDCAN2_RX, OTG_HS_ULPI_D5 and OTG_HS_ID."
      },
      {
        "number": "73",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V-tolerant USB-option I/O (FT_u); additional OTG_HS_VBUS function; alternate functions include TIM1_CH1N, LPTIM2_OUT, USART3_CTS, FDCAN2_TX, OTG_HS_ULPI_D6 and UART5_TX."
      },
      {
        "number": "74",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V-tolerant USB-option I/O (FT_u); alternate functions include TIM1_CH2N, TIM12_CH1, USART1_TX, SPI2_MISO/I2S2_SDI, SDMMC2_D0 and OTG_HS_DM."
      },
      {
        "number": "75",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V-tolerant USB-option I/O (FT_u); alternate functions include RTC_REFIN, TIM1_CH3N, TIM12_CH2, USART1_RX, SPI2_MOSI/I2S2_SDO, SDMMC2_D1 and OTG_HS_DP."
      },
      {
        "number": "76",
        "name": "PD8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include DFSDM1_CKIN3, SAI3_SCK_B, USART3_TX, SPDIFRX1_IN2 and FMC_D13."
      },
      {
        "number": "77",
        "name": "PD9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include DFSDM1_DATIN3, SAI3_SD_B, USART3_RX, FDCAN2_RXFD_MODE and FMC_D14."
      },
      {
        "number": "78",
        "name": "PD10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include DFSDM1_CKOUT, SAI3_FS_B, USART3_CK, FDCAN2_TXFD_MODE, FMC_D15 and LCD_B3."
      },
      {
        "number": "79",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital and I/O supply pin of the 1.62 to 3.6 V application supply; VDD pin-to-pin variations within the domain are limited to 50 mV."
      },
      {
        "number": "80",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; all VSS pins must be at the same potential, with ground variations limited to 50 mV."
      },
      {
        "number": "81",
        "name": "PD11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include LPTIM2_IN2, I2C4_SMBA, USART3_CTS, QUADSPI_BK1_IO0, SAI2_SD_A and FMC_A16."
      },
      {
        "number": "82",
        "name": "PD12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+ and high-speed options (FT_fh); alternate functions include LPTIM1_IN1, TIM4_CH1, I2C4_SCL, USART3_RTS, QUADSPI_BK1_IO1 and FMC_A17."
      },
      {
        "number": "83",
        "name": "PD13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+ and high-speed options (FT_fh); alternate functions include LPTIM1_OUT, TIM4_CH2, I2C4_SDA, QUADSPI_BK1_IO3 and FMC_A18."
      },
      {
        "number": "84",
        "name": "PD14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include TIM4_CH3, SAI3_MCLK_B, UART8_CTS and FMC_D0."
      },
      {
        "number": "85",
        "name": "PD15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include TIM4_CH4, SAI3_MCLK_A, UART8_RTS/UART8_DE and FMC_D1."
      },
      {
        "number": "86",
        "name": "PG6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include TIM17_BKIN, HRTIM_CHE1, QUADSPI_BK1_NCS, FMC_NE3, DCMI_D12 and LCD_R7."
      },
      {
        "number": "87",
        "name": "PG7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include HRTIM_CHE2, SAI1_MCLK_A, USART6_CK, FMC_INT, DCMI_D13 and LCD_CLK."
      },
      {
        "number": "88",
        "name": "PG8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include TIM8_ETR, SPI6_NSS, USART6_RTS/USART6_DE, SPDIFRX1_IN3, ETH_PPS_OUT, FMC_SDCLK and LCD_G7."
      },
      {
        "number": "89",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; all VSS pins must be at the same potential, with ground variations limited to 50 mV."
      },
      {
        "number": "90",
        "name": "VDD50USB",
        "type": "power_in",
        "description": "5 V supply input of the USB power block, whose embedded 3.3 V regulator supplies the internal USB PHYs."
      },
      {
        "number": "91",
        "name": "VDD33USB",
        "type": "power_in",
        "description": "USB supply pin specified at 3.0 to 3.6 V, supplying the USB option I/Os and internal USB PHYs."
      },
      {
        "number": "92",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital and I/O supply pin of the 1.62 to 3.6 V application supply; VDD pin-to-pin variations within the domain are limited to 50 mV."
      },
      {
        "number": "93",
        "name": "PC6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include HRTIM_CHA1, TIM3_CH1, TIM8_CH1, I2S2_MCK, USART6_TX, FMC_NWAIT and DCMI_D0; additional SWPMI_IO function."
      },
      {
        "number": "94",
        "name": "PC7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include TRGIO, HRTIM_CHA2, TIM3_CH2, I2S3_MCK, USART6_RX, FMC_NE1, SWPMI_TX and DCMI_D1."
      },
      {
        "number": "95",
        "name": "PC8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include TRACED1, HRTIM_CHB1, TIM3_CH3, TIM8_CH3, USART6_CK, UART5_RTS/UART5_DE, FMC_NE2/FMC_NCE and SWPMI_RX."
      },
      {
        "number": "96",
        "name": "PC9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+ and high-speed options (FT_fh); alternate functions include MCO2, TIM3_CH4, TIM8_CH4, I2C3_SDA, UART5_CTS, QUADSPI_BK1_IO0 and SWPMI_SUSPEND."
      },
      {
        "number": "97",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+, high-speed and analog options (FT_fha); alternate functions include MCO1, TIM1_CH1, HRTIM_CHB2, I2C3_SCL, USART1_CK, OTG_FS_SOF and UART7_RX."
      },
      {
        "number": "98",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V-tolerant USB-option I/O (FT_u); additional OTG_FS_VBUS function; alternate functions include TIM1_CH2, HRTIM_CHC1, LPUART1_TX, I2C3_SMBA, USART1_TX, FDCAN1_RXFD_MODE and DCMI_D0."
      },
      {
        "number": "99",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V-tolerant USB-option I/O (FT_u); alternate functions include TIM1_CH3, HRTIM_CHC2, LPUART1_RX, USART1_RX, FDCAN1_TXFD_MODE, OTG_FS_ID, MDIOS_MDIO and DCMI_D1."
      },
      {
        "number": "100",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V-tolerant USB-option I/O (FT_u); alternate functions include TIM1_CH4, HRTIM_CHD1, LPUART1_CTS, SPI2_NSS/I2S2_WS, UART4_RX, USART1_CTS, FDCAN1_RX and OTG_FS_DM."
      },
      {
        "number": "101",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V-tolerant USB-option I/O (FT_u); alternate functions include TIM1_ETR, HRTIM_CHD2, LPUART1_RTS/LPUART1_DE, SPI2_SCK/I2S2_CK, UART4_TX, USART1_RTS/USART1_DE, FDCAN1_TX and OTG_FS_DP."
      },
      {
        "number": "102",
        "name": "PA13 (JTMS/SWDIO)",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) carrying the JTMS-SWDIO debug function, with EVENTOUT as alternate function."
      },
      {
        "number": "103",
        "name": "VCAP",
        "type": "power_out",
        "description": "Main regulator stabilization pin; an external capacitor CEXT of 2.2 µF with ESR below 100 mΩ must be connected to it."
      },
      {
        "number": "104",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; all VSS pins must be at the same potential, with ground variations limited to 50 mV."
      },
      {
        "number": "105",
        "name": "VDDLDO",
        "type": "power_in",
        "description": "Supply input of the embedded LDO regulator that supplies the digital circuitry."
      },
      {
        "number": "106",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital and I/O supply pin of the 1.62 to 3.6 V application supply; VDD pin-to-pin variations within the domain are limited to 50 mV."
      },
      {
        "number": "107",
        "name": "PA14 (JTCK/SWCLK)",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) carrying the JTCK-SWCLK debug function, with EVENTOUT as alternate function."
      },
      {
        "number": "108",
        "name": "PA15(JTDI)",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) carrying the JTDI debug function; alternate functions include TIM2_CH1/TIM2_ETR, HRTIM_FLT1, CEC, SPI1_NSS/I2S1_WS, SPI3_NSS/I2S3_WS and UART4_RTS/UART4_DE."
      },
      {
        "number": "109",
        "name": "PC10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed and analog options (FT_ha); alternate functions include HRTIM_EEV1, DFSDM1_CKIN5, SPI3_SCK/I2S3_CK, USART3_TX, UART4_TX, QUADSPI_BK1_IO1, SDMMC1_D2 and DCMI_D8."
      },
      {
        "number": "110",
        "name": "PC11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include HRTIM_FLT2, DFSDM1_DATIN5, SPI3_MISO/I2S3_SDI, USART3_RX, UART4_RX, QUADSPI_BK2_NCS, SDMMC1_D3 and DCMI_D4."
      },
      {
        "number": "111",
        "name": "PC12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include TRACED3, HRTIM_EEV2, SPI3_MOSI/I2S3_SDO, USART3_CK, UART5_TX, SDMMC1_CK and DCMI_D9."
      },
      {
        "number": "112",
        "name": "PD0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include DFSDM1_CKIN6, SAI3_SCK_A, UART4_RX, FDCAN1_RX and FMC_D2."
      },
      {
        "number": "113",
        "name": "PD1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include DFSDM1_DATIN6, SAI3_SD_A, UART4_TX, FDCAN1_TX and FMC_D3."
      },
      {
        "number": "114",
        "name": "PD2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include TRACED2, TIM3_ETR, UART5_RX, SDMMC1_CMD and DCMI_D11."
      },
      {
        "number": "115",
        "name": "PD3",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include DFSDM1_CKOUT, SPI2_SCK/I2S2_CK, USART2_CTS, FMC_CLK, DCMI_D5 and LCD_G7."
      },
      {
        "number": "116",
        "name": "PD4",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include HRTIM_FLT3, SAI3_FS_A, USART2_RTS/USART2_DE, FDCAN1_RXFD_MODE and FMC_NOE."
      },
      {
        "number": "117",
        "name": "PD5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include HRTIM_EEV3, USART2_TX, FDCAN1_TXFD_MODE and FMC_NWE."
      },
      {
        "number": "118",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; all VSS pins must be at the same potential, with ground variations limited to 50 mV."
      },
      {
        "number": "119",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital and I/O supply pin of the 1.62 to 3.6 V application supply; VDD pin-to-pin variations within the domain are limited to 50 mV."
      },
      {
        "number": "120",
        "name": "PD6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include SAI1_D1, DFSDM1_CKIN4, SPI3_MOSI/I2S3_SDO, USART2_RX, SDMMC2_CK, FMC_NWAIT, DCMI_D10 and LCD_B2."
      },
      {
        "number": "121",
        "name": "PD7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include DFSDM1_DATIN4, SPI1_MOSI/I2S1_SDO, DFSDM1_CKIN1, USART2_CK, SPDIFRX1_IN1, SDMMC2_CMD and FMC_NE1."
      },
      {
        "number": "122",
        "name": "PG9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include SPI1_MISO/I2S1_SDI, USART6_RX, SPDIFRX1_IN4, QUADSPI_BK2_IO2, SAI2_FS_B, FMC_NE2/FMC_NCE and DCMI_VSYNC."
      },
      {
        "number": "123",
        "name": "PG10",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include HRTIM_FLT5, SPI1_NSS/I2S1_WS, LCD_G3, SAI2_SD_B, FMC_NE3, DCMI_D2 and LCD_B2."
      },
      {
        "number": "124",
        "name": "PG11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include LPTIM1_IN2, HRTIM_EEV4, SPI1_SCK/I2S1_CK, SPDIFRX1_IN1, SDMMC2_D2, ETH_MII_TX_EN and DCMI_D3."
      },
      {
        "number": "125",
        "name": "PG12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include LPTIM1_IN1, HRTIM_EEV5, SPI6_MISO, USART6_RTS/USART6_DE, SPDIFRX1_IN2, ETH_MII_TXD1, FMC_NE4 and LCD_B1."
      },
      {
        "number": "126",
        "name": "PG13",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include TRACED0, LPTIM1_OUT, HRTIM_EEV10, SPI6_SCK, USART6_CTS, ETH_MII_TXD0, FMC_A24 and LCD_R0."
      },
      {
        "number": "127",
        "name": "PG14",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include TRACED1, LPTIM1_ETR, SPI6_MOSI, USART6_TX, QUADSPI_BK2_IO3, ETH_MII_TXD1, FMC_A25 and LCD_B0."
      },
      {
        "number": "128",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; all VSS pins must be at the same potential, with ground variations limited to 50 mV."
      },
      {
        "number": "129",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital and I/O supply pin of the 1.62 to 3.6 V application supply; VDD pin-to-pin variations within the domain are limited to 50 mV."
      },
      {
        "number": "130",
        "name": "PB3 (JTDO/TRACESWO)",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) carrying the JTDO/TRACESWO debug function; alternate functions include TIM2_CH2, HRTIM_FLT4, SPI1_SCK/I2S1_CK, SPI3_SCK/I2S3_CK, SDMMC2_D2 and UART7_RX."
      },
      {
        "number": "131",
        "name": "PB4 (NJTRST)",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) carrying the NJTRST debug function; alternate functions include TIM16_BKIN, TIM3_CH1, HRTIM_EEV6, SPI1_MISO/I2S1_SDI, SPI3_MISO/I2S3_SDI, SDMMC2_D3 and UART7_TX."
      },
      {
        "number": "132",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions include TIM17_BKIN, TIM3_CH2, HRTIM_EEV7, I2C1_SMBA, SPI1_MOSI/I2S1_SDO, FDCAN2_RX, OTG_HS_ULPI_D7, FMC_SDCKE1, DCMI_D10 and UART5_RX."
      },
      {
        "number": "133",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+ option (FT_f); alternate functions include TIM16_CH1N, TIM4_CH1, HRTIM_EEV8, I2C1_SCL, CEC, I2C4_SCL, USART1_TX, FDCAN2_TX, QUADSPI_BK1_NCS and FMC_SDNE1."
      },
      {
        "number": "134",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+ and analog options (FT_fa); additional PVD_IN function; alternate functions include TIM17_CH1N, TIM4_CH2, HRTIM_EEV9, I2C1_SDA, I2C4_SDA, USART1_RX, FDCAN2_TXFD_MODE and FMC_NL."
      },
      {
        "number": "135",
        "name": "BOOT0",
        "type": "input",
        "description": "Dedicated BOOT0 input pin, with a maximum input voltage of 9.0 V (VPP)."
      },
      {
        "number": "136",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+ and high-speed options (FT_fh); alternate functions include TIM16_CH1, TIM4_CH3, DFSDM1_CKIN7, I2C1_SCL, I2C4_SCL, SDMMC1_CKIN, UART4_RX, FDCAN1_RX and DCMI_D6."
      },
      {
        "number": "137",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with I2C FM+ and high-speed options (FT_fh); alternate functions include TIM17_CH1, TIM4_CH4, DFSDM1_DATIN7, I2C1_SDA, SPI2_NSS/I2S2_WS, I2C4_SDA, UART4_TX, FDCAN1_TX and DCMI_D7."
      },
      {
        "number": "138",
        "name": "PE0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include LPTIM1_ETR, TIM4_ETR, HRTIM_SCIN, LPTIM2_ETR, UART8_RX, SAI2_MCLK_A, FMC_NBL0 and DCMI_D2."
      },
      {
        "number": "139",
        "name": "PE1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with high-speed option (FT_h); alternate functions include LPTIM1_IN2, HRTIM_SCOUT, UART8_TX, FDCAN1_TXFD_MODE, FMC_NBL1 and DCMI_D3."
      },
      {
        "number": "140",
        "name": "VCAP",
        "type": "power_out",
        "description": "Main regulator stabilization pin; an external capacitor CEXT of 2.2 µF with ESR below 100 mΩ must be connected to it."
      },
      {
        "number": "141",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; all VSS pins must be at the same potential, with ground variations limited to 50 mV."
      },
      {
        "number": "142",
        "name": "PDR_ON",
        "type": "input",
        "description": "5 V-tolerant (FT) input pin for the power-down reset control, PDR_ON."
      },
      {
        "number": "143",
        "name": "VDDLDO",
        "type": "power_in",
        "description": "Supply input of the embedded LDO regulator that supplies the digital circuitry."
      },
      {
        "number": "144",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital and I/O supply pin of the 1.62 to 3.6 V application supply; VDD pin-to-pin variations within the domain are limited to 50 mV."
      }
    ],
    "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: Package mapping: MPN STM32H755ZIT6 is LQFP144 (ordering code Z = 144 pins, T = LQFP). Pinout taken f; Pin descriptions are condensed from Table 7 (I/O structure, notes, alternate and additional function; Type assignments that are judgement calls under KiCad classes: VCAP and VLXSMPS typed power_out (dat"
        ],
        "pages_sent": 94,
        "cost_usd": 0.5725,
        "at": "2026-10-10T17:45:00"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588907786503114752",
        "pages": 252,
        "sha256": "95fcf29e96c85204",
        "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"
    },
    "models_3d": [
      {
        "file": "stm32h755zit6.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": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm32h755zit6-etched.step",
        "role": "eda",
        "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": "e1fde3b56b204d6aab1318d2aa92609302ccc5aeed825cf66841ec364e3ac9e7",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "LQFP-144(20x20)",
      "Category": "Global Sourcing Parts",
      "Pins": "144"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
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