STM32L451RET6TR

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm32l451ret6tr",
  "title": "STM32L451RET6TR",
  "brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-64(10x10). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "version": "0.1.1",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm32l451ret6tr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STM32L451RET6TR",
    "manufacturer": "STMicroelectronics",
    "package": "LQFP-64(10x10)",
    "pin_count": 64,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590237007227088896",
    "parts": {
      "symbol": "stm32l451ret6tr.kicad_sym",
      "footprint": "stm32l451ret6tr.kicad_mod",
      "model_3d": "stm32l451ret6tr-etched.glb",
      "model_3d_plain": "stm32l451ret6tr.glb",
      "model_3d_step": "stm32l451ret6tr-etched.step",
      "model_3d_step_plain": "stm32l451ret6tr.step",
      "lbr": "stm32l451ret6tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C5127799",
      "digikey": "497-18835-2-ND",
      "mouser": "511-STM32L451RET6TR"
    },
    "distributor_check": {
      "checked_at": "2026-09-29T14:55:26Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-18835-2-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32L451RET6TR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup power supply for RTC and backup registers, voltage range 1.55 V to 3.6 V."
      },
      {
        "number": "2",
        "name": "PC13",
        "type": "bidirectional",
        "description": "GPIO Port C pin 13, 5 V tolerant I/O with 3 mA maximum output current limitation, powered through backup domain switch."
      },
      {
        "number": "3",
        "name": "PC14-OSC32_IN (PC14)",
        "type": "bidirectional",
        "description": ""
      },
      {
        "number": "4",
        "name": "PC15-OSC32_OUT (PC15)",
        "type": "bidirectional",
        "description": ""
      },
      {
        "number": "5",
        "name": "PH0-OSC_IN (PH0)",
        "type": "bidirectional",
        "description": ""
      },
      {
        "number": "6",
        "name": "PH1-OSC_OUT (PH1)",
        "type": "bidirectional",
        "description": ""
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "input",
        "description": "Reset pin with embedded weak pull-up resistor, accepts input or open-drain output during reset sequence."
      },
      {
        "number": "8",
        "name": "PC0",
        "type": "bidirectional",
        "description": "GPIO Port C pin 0, 5 V tolerant I/O with analog switch capability, ADC1_IN1 analog input."
      },
      {
        "number": "9",
        "name": "PC1",
        "type": "bidirectional",
        "description": "GPIO Port C pin 1, 5 V tolerant I/O with analog switch capability, ADC1_IN2 analog input."
      },
      {
        "number": "10",
        "name": "PC2",
        "type": "bidirectional",
        "description": "GPIO Port C pin 2, 5 V tolerant I/O with analog switch capability, ADC1_IN3 analog input."
      },
      {
        "number": "11",
        "name": "PC3",
        "type": "bidirectional",
        "description": "GPIO Port C pin 3, 5 V tolerant I/O with analog switch capability, ADC1_IN4 analog input."
      },
      {
        "number": "12",
        "name": "VSSA/VREF-",
        "type": "power_in",
        "description": ""
      },
      {
        "number": "13",
        "name": "VDDA/VREF+",
        "type": "power_in",
        "description": ""
      },
      {
        "number": "14",
        "name": "PA0",
        "type": "bidirectional",
        "description": "GPIO Port A pin 0, 5 V tolerant I/O with analog switch capability, ADC1_IN5 analog input."
      },
      {
        "number": "15",
        "name": "PA1",
        "type": "bidirectional",
        "description": "GPIO Port A pin 1, 5 V tolerant I/O with analog switch capability, ADC1_IN6 analog input."
      },
      {
        "number": "16",
        "name": "PA2",
        "type": "bidirectional",
        "description": "GPIO Port A pin 2, 5 V tolerant I/O with analog switch capability, ADC1_IN7 analog input."
      },
      {
        "number": "17",
        "name": "PA3",
        "type": "bidirectional",
        "description": "GPIO Port A pin 3, 3.6 V tolerant I/O with analog switch capability, ADC1_IN8 analog input."
      },
      {
        "number": "18",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground connection for digital circuits and standard I/O."
      },
      {
        "number": "19",
        "name": "VDD",
        "type": "power_in",
        "description": "Main digital supply voltage, range 1.71 V to 3.6 V with decoupling capacitor required."
      },
      {
        "number": "20",
        "name": "PA4",
        "type": "bidirectional",
        "description": "GPIO Port A pin 4, 3.6 V tolerant I/O with analog switch capability, ADC1_IN9 and DAC1_OUT1 analog functions."
      },
      {
        "number": "21",
        "name": "PA5",
        "type": "bidirectional",
        "description": "GPIO Port A pin 5, 3.6 V tolerant I/O with analog switch capability, ADC1_IN10 analog input."
      },
      {
        "number": "22",
        "name": "PA6",
        "type": "bidirectional",
        "description": "GPIO Port A pin 6, 5 V tolerant I/O with analog switch capability, ADC1_IN11 analog input."
      },
      {
        "number": "23",
        "name": "PA7",
        "type": "bidirectional",
        "description": "GPIO Port A pin 7, 5 V tolerant I/O with analog switch capability, ADC1_IN12 analog input."
      },
      {
        "number": "24",
        "name": "PC4",
        "type": "bidirectional",
        "description": "GPIO Port C pin 4, 5 V tolerant I/O with analog switch capability, ADC1_IN13 analog input."
      },
      {
        "number": "25",
        "name": "PC5",
        "type": "bidirectional",
        "description": "GPIO Port C pin 5, 5 V tolerant I/O with analog switch capability, ADC1_IN14 and WKUP5 wake-up source."
      },
      {
        "number": "26",
        "name": "PB0",
        "type": "bidirectional",
        "description": "GPIO Port B pin 0, 5 V tolerant I/O with analog switch capability, ADC1_IN15 analog input."
      },
      {
        "number": "27",
        "name": "PB1",
        "type": "bidirectional",
        "description": "GPIO Port B pin 1, 5 V tolerant I/O with analog switch capability, ADC1_IN16 analog input."
      },
      {
        "number": "28",
        "name": "PB2",
        "type": "bidirectional",
        "description": "GPIO Port B pin 2, 5 V tolerant I/O with analog switch capability, COMP1_INP comparator input."
      },
      {
        "number": "29",
        "name": "PB10",
        "type": "bidirectional",
        "description": "GPIO Port B pin 10, 5 V tolerant I/O with Fm+ capability for I2C4, I2C2, and SPI2 interfaces."
      },
      {
        "number": "30",
        "name": "PB11",
        "type": "bidirectional",
        "description": "GPIO Port B pin 11, 5 V tolerant I/O with Fm+ capability for I2C4 and I2C2 communication interfaces."
      },
      {
        "number": "31",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground connection for digital circuits and standard I/O."
      },
      {
        "number": "32",
        "name": "VDD",
        "type": "power_in",
        "description": "Main digital supply voltage, range 1.71 V to 3.6 V with decoupling capacitor required."
      },
      {
        "number": "33",
        "name": "PB12",
        "type": "bidirectional",
        "description": "GPIO Port B pin 12, 5 V tolerant I/O for TIM1_BKIN, I2C2_SMBA, SPI2_NSS alternate functions."
      },
      {
        "number": "34",
        "name": "PB13",
        "type": "bidirectional",
        "description": "GPIO Port B pin 13, 5 V tolerant I/O with Fm+ capability for I2C2_SCL and CAN1_TX."
      },
      {
        "number": "35",
        "name": "PB14",
        "type": "bidirectional",
        "description": "GPIO Port B pin 14, 5 V tolerant I/O with Fm+ capability for I2C2_SDA and SPI2_MISO."
      },
      {
        "number": "36",
        "name": "PB15",
        "type": "bidirectional",
        "description": "GPIO Port B pin 15, 5 V tolerant I/O for TIM1_CH3N, SPI2_MOSI alternate functions."
      },
      {
        "number": "37",
        "name": "PC6",
        "type": "bidirectional",
        "description": "GPIO Port C pin 6, 5 V tolerant I/O for TIM3_CH1, SDMMC1_D6 alternate functions."
      },
      {
        "number": "38",
        "name": "PC7",
        "type": "bidirectional",
        "description": "GPIO Port C pin 7, 5 V tolerant I/O for TIM3_CH2, SDMMC1_D7 alternate functions."
      },
      {
        "number": "39",
        "name": "PC8",
        "type": "bidirectional",
        "description": "GPIO Port C pin 8, 5 V tolerant I/O for TIM3_CH3, SDMMC1_D0 alternate functions."
      },
      {
        "number": "40",
        "name": "PC9",
        "type": "bidirectional",
        "description": "GPIO Port C pin 9, 5 V tolerant I/O for TIM3_CH4, TSC_G4_IO4, SDMMC1_D1 alternate functions."
      },
      {
        "number": "41",
        "name": "PA8",
        "type": "bidirectional",
        "description": "GPIO Port A pin 8, 5 V tolerant I/O, can be configured as MCO (microcontroller clock output) pin."
      },
      {
        "number": "42",
        "name": "PA9",
        "type": "bidirectional",
        "description": "GPIO Port A pin 9, 5 V tolerant I/O with Fm+ capability for I2C1_SCL and USART1_TX."
      },
      {
        "number": "43",
        "name": "PA10",
        "type": "bidirectional",
        "description": "GPIO Port A pin 10, 5 V tolerant I/O with Fm+ capability for I2C1_SDA and USART1_RX."
      },
      {
        "number": "44",
        "name": "PA11",
        "type": "bidirectional",
        "description": "GPIO Port A pin 11, 5 V tolerant I/O for CAN1_RX and USART1_CTS alternate functions."
      },
      {
        "number": "45",
        "name": "PA12",
        "type": "bidirectional",
        "description": "GPIO Port A pin 12, 5 V tolerant I/O with Fm+ capability for CAN1_TX and USART1_RTS alternate functions."
      },
      {
        "number": "46",
        "name": "PA13 (JTMS/SWDIO)",
        "type": "bidirectional",
        "description": ""
      },
      {
        "number": "47",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground connection for digital circuits and standard I/O."
      },
      {
        "number": "48",
        "name": "VDD",
        "type": "power_in",
        "description": "Main digital supply voltage, range 1.71 V to 3.6 V with decoupling capacitor required."
      },
      {
        "number": "49",
        "name": "PA14 (JTCK/SWCLK)",
        "type": "bidirectional",
        "description": ""
      },
      {
        "number": "50",
        "name": "PA15 (JTDI)",
        "type": "bidirectional",
        "description": ""
      },
      {
        "number": "51",
        "name": "PC10",
        "type": "bidirectional",
        "description": "GPIO Port C pin 10, 5 V tolerant I/O for TRACED1, SPI3_SCK, USART3_TX, SDMMC1_D2."
      },
      {
        "number": "52",
        "name": "PC11",
        "type": "bidirectional",
        "description": "GPIO Port C pin 11, 5 V tolerant I/O for SPI3_MISO, USART3_RX, UART4_RX, SDMMC1_D3."
      },
      {
        "number": "53",
        "name": "PC12",
        "type": "bidirectional",
        "description": "GPIO Port C pin 12, 5 V tolerant I/O for TRACED3, SPI3_MOSI, USART3_CK, SDMMC1_CK."
      },
      {
        "number": "54",
        "name": "PD2",
        "type": "bidirectional",
        "description": "GPIO Port D pin 2, 5 V tolerant I/O for TRACED2, TIM3_ETR, USART3_RTS_DE, SDMMC1_CMD."
      },
      {
        "number": "55",
        "name": "PB3 (JTDO/TRACESWO)",
        "type": "bidirectional",
        "description": ""
      },
      {
        "number": "56",
        "name": "PB4 (NJTRST)",
        "type": "bidirectional",
        "description": ""
      },
      {
        "number": "57",
        "name": "PB5",
        "type": "bidirectional",
        "description": "GPIO Port B pin 5, 5 V tolerant I/O for LPTIM1_IN1, CAN1_RX, I2C1_SMBA, COMP2_OUT."
      },
      {
        "number": "58",
        "name": "PB6",
        "type": "bidirectional",
        "description": "GPIO Port B pin 6, 5 V tolerant I/O with Fm+ capability for I2C1_SCL, I2C4_SCL, CAN1_TX."
      },
      {
        "number": "59",
        "name": "PB7",
        "type": "bidirectional",
        "description": "GPIO Port B pin 7, 5 V tolerant I/O with Fm+ capability for I2C1_SDA, UART4_CTS, COMP2_INM."
      },
      {
        "number": "60",
        "name": "PH3-BOOT0 (BOOT0)",
        "type": "bidirectional",
        "description": ""
      },
      {
        "number": "61",
        "name": "PB8",
        "type": "bidirectional",
        "description": "GPIO Port B pin 8, 5 V tolerant I/O with Fm+ capability for I2C1_SCL, CAN1_RX, SDMMC1_D4."
      },
      {
        "number": "62",
        "name": "PB9",
        "type": "bidirectional",
        "description": "GPIO Port B pin 9, 5 V tolerant I/O with Fm+ capability for I2C1_SDA, CAN1_TX, SDMMC1_D5."
      },
      {
        "number": "63",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground connection for digital circuits and standard I/O."
      },
      {
        "number": "64",
        "name": "VDD",
        "type": "power_in",
        "description": "Main digital supply voltage, range 1.71 V to 3.6 V with decoupling capacitor required."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590237007227088896",
        "pages": 207,
        "sha256": "aa4890e697f5f52e",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 64,
        "described": 64,
        "cites_pages": true,
        "refuses_to_fabricate": true,
        "checked_against": "STM32_open_pin_data STM32L451R(C-E)Tx.xml"
      },
      "correction": {
        "at": "2026-09-30",
        "what": "56 of 64 pins corrected",
        "how": "pinout rebuilt from STMicroelectronics STM32_open_pin_data (STM32L451R(C-E)Tx.xml, LQFP64); the previous pinout came from a single-model extraction",
        "symbol": "regenerated from the corrected pinout"
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "LQFP-64(10x10)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "64"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "stm32l451ret6tr"
  ],
  "discovery_pitch": "STM32L451RET6TR (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",
    "stm32l451ret6tr.kicad_sym",
    "stm32l451ret6tr.kicad_mod",
    "stm32l451ret6tr.glb",
    "stm32l451ret6tr.step",
    "stm32l451ret6tr.lbr",
    "docs/hero.png",
    "docs/stm32l451ret6tr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  }
}