STM32L433CCT3

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm32l433cct3",
  "title": "STM32L433CCT3",
  "brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). 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",
    "stm32l433cct3",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STM32L433CCT3",
    "manufacturer": "STMicroelectronics",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588894017823625216",
    "parts": {
      "symbol": "stm32l433cct3.kicad_sym",
      "footprint": "stm32l433cct3.kicad_mod",
      "model_3d": "stm32l433cct3-hero.glb",
      "model_3d_plain": "stm32l433cct3.glb",
      "model_3d_step": "stm32l433cct3-etched.step",
      "model_3d_step_plain": "stm32l433cct3.step",
      "lbr": "stm32l433cct3.lbr"
    },
    "distributor_links": {
      "lcsc": "C1849370",
      "digikey": "497-STM32L433CCT3-ND",
      "mouser": "511-STM32L433CCT3"
    },
    "distributor_check": {
      "checked_at": "2026-10-05T21:36:03Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-STM32L433CCT3-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32L433CCT3",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup domain power supply (1.55-3.6 V) for RTC and 32x32-bit backup registers"
      },
      {
        "number": "2",
        "name": "PC13",
        "type": "bidirectional",
        "description": "GPIO port C bit 13 with RTC tamper/timestamp/output and wakeup functions"
      },
      {
        "number": "3",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "GPIO port C bit 14 with 32 kHz RTC crystal oscillator input function"
      },
      {
        "number": "4",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "GPIO port C bit 15 with 32 kHz RTC crystal oscillator output function"
      },
      {
        "number": "5",
        "name": "PH0-OSC_IN",
        "type": "bidirectional",
        "description": "GPIO port H bit 0 with 4-48 MHz main oscillator input function"
      },
      {
        "number": "6",
        "name": "PH1-OSC_OUT",
        "type": "bidirectional",
        "description": "GPIO port H bit 1 with 4-48 MHz main oscillator output function"
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "bidirectional",
        "description": "System reset pin with internal weak pull-up resistor, active low"
      },
      {
        "number": "8",
        "name": "VSSA/VREF-",
        "type": "power_out",
        "description": "Analog ground and negative voltage reference (0 V)"
      },
      {
        "number": "9",
        "name": "VDDA/VREF+",
        "type": "power_in",
        "description": "Analog power supply and positive voltage reference (1.62-3.6 V)"
      },
      {
        "number": "10",
        "name": "PA0",
        "type": "bidirectional",
        "description": "GPIO port A bit 0 with ADC analog input and timer/USART/comparator alternate functions"
      },
      {
        "number": "11",
        "name": "PA1",
        "type": "bidirectional",
        "description": "GPIO port A bit 1 with ADC analog input and I2C/SPI/timer alternate functions"
      },
      {
        "number": "12",
        "name": "PA2",
        "type": "bidirectional",
        "description": "GPIO port A bit 2 with ADC analog input and USART/timer/QUADSPI alternate functions"
      },
      {
        "number": "13",
        "name": "PA3",
        "type": "bidirectional",
        "description": "GPIO port A bit 3 (3.6 V tolerant) with ADC analog input and USART/QUADSPI/SAI alternate functions"
      },
      {
        "number": "14",
        "name": "PA4",
        "type": "bidirectional",
        "description": "GPIO port A bit 4 (3.6 V tolerant) with ADC analog input and DAC1_OUT1 function"
      },
      {
        "number": "15",
        "name": "PA5",
        "type": "bidirectional",
        "description": "GPIO port A bit 5 (3.6 V tolerant) with ADC analog input and DAC1_OUT2 function"
      },
      {
        "number": "16",
        "name": "PA6",
        "type": "bidirectional",
        "description": "GPIO port A bit 6 with ADC analog input and timer/SPI/comparator/QUADSPI alternate functions"
      },
      {
        "number": "17",
        "name": "PA7",
        "type": "bidirectional",
        "description": "GPIO port A bit 7 with ADC analog input and timer/SPI/QUADSPI/comparator alternate functions"
      },
      {
        "number": "18",
        "name": "PB0",
        "type": "bidirectional",
        "description": "GPIO port B bit 0 with ADC analog input and timer/SPI/USART/QUADSPI alternate functions"
      },
      {
        "number": "19",
        "name": "PB1",
        "type": "bidirectional",
        "description": "GPIO port B bit 1 with ADC analog input and timer/USART/LPUART/QUADSPI alternate functions"
      },
      {
        "number": "20",
        "name": "PB2",
        "type": "bidirectional",
        "description": "GPIO port B bit 2 with RTC/LPTIM/I2C/LCD control voltage alternate functions"
      },
      {
        "number": "21",
        "name": "PB10",
        "type": "bidirectional",
        "description": "GPIO port B bit 10 with timer/I2C/SPI/USART/LPUART/QUADSPI/LCD segment alternate functions"
      },
      {
        "number": "22",
        "name": "PB11",
        "type": "bidirectional",
        "description": "GPIO port B bit 11 with timer/I2C/USART/LPUART/QUADSPI/LCD segment alternate functions"
      },
      {
        "number": "23",
        "name": "VSS",
        "type": "power_out",
        "description": "Ground return pin for digital power supply circuits"
      },
      {
        "number": "24",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital power supply (1.71-3.6 V)"
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "GPIO port B bit 12 with timer/I2C/SPI/USART/LPUART/SWPMI/LCD segment alternate functions"
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "GPIO port B bit 13 with timer/I2C/SPI/USART/LPUART/SWPMI/LCD segment alternate functions"
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "GPIO port B bit 14 with timer/I2C/SPI/USART/SWPMI/LCD segment alternate functions"
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "GPIO port B bit 15 with RTC/timer/SPI/SWPMI/LCD segment alternate functions"
      },
      {
        "number": "29",
        "name": "PA8",
        "type": "bidirectional",
        "description": "GPIO port A bit 8 with MCO/timer/USART/LCD common/SWPMI/SAI alternate functions"
      },
      {
        "number": "30",
        "name": "PA9",
        "type": "bidirectional",
        "description": "GPIO port A bit 9 with timer/I2C/USART/LCD common/SAI alternate functions"
      },
      {
        "number": "31",
        "name": "PA10",
        "type": "bidirectional",
        "description": "GPIO port A bit 10 with timer/I2C/USART/USB/LCD common/SAI alternate functions"
      },
      {
        "number": "32",
        "name": "PA11",
        "type": "bidirectional",
        "description": "GPIO port A bit 11 (USB supplied) with USB DM and timer/SPI/CAN/comparator alternate functions"
      },
      {
        "number": "33",
        "name": "PA12",
        "type": "bidirectional",
        "description": "GPIO port A bit 12 (USB supplied) with USB DP and timer/SPI/CAN alternate functions"
      },
      {
        "number": "34",
        "name": "PA13 (JTMS-SWDIO)",
        "type": "bidirectional",
        "description": "JTAG/SWD serial wire debug transmit/receive or GPIO port A bit 13 with internal pull-up after reset"
      },
      {
        "number": "35",
        "name": "VSS",
        "type": "power_out",
        "description": "Ground return pin for digital power supply circuits"
      },
      {
        "number": "36",
        "name": "VDDUSB",
        "type": "power_in",
        "description": "USB 2.0 full-speed power supply (3.0-3.6 V when USB used, optional when USB unused)"
      },
      {
        "number": "37",
        "name": "PA14 (JTCK-SWCLK)",
        "type": "bidirectional",
        "description": "JTAG/SWD serial wire debug clock or GPIO port A bit 14 with LPTIM/I2C alternate functions and internal pull-down"
      },
      {
        "number": "38",
        "name": "PA15 (JTDI)",
        "type": "bidirectional",
        "description": "JTAG debug input or GPIO port A bit 15 with timer/USART/SPI/LCD segment alternate functions"
      },
      {
        "number": "39",
        "name": "PB3 (JTDO-TRACESWO)",
        "type": "bidirectional",
        "description": "JTAG debug output/trace SWO or GPIO port B bit 3 with timer/SPI/USART/LCD segment/SAI alternate functions"
      },
      {
        "number": "40",
        "name": "PB4 (NJTRST)",
        "type": "bidirectional",
        "description": "JTAG test reset or GPIO port B bit 4 with I2C/SPI/USART/LCD segment/SAI alternate functions"
      },
      {
        "number": "41",
        "name": "PB5",
        "type": "bidirectional",
        "description": "GPIO port B bit 5 with LPTIM/I2C/SPI/USART/LCD segment/timer alternate functions"
      },
      {
        "number": "42",
        "name": "PB6",
        "type": "bidirectional",
        "description": "GPIO port B bit 6 with LPTIM/I2C/USART/SAI/timer alternate functions"
      },
      {
        "number": "43",
        "name": "PB7",
        "type": "bidirectional",
        "description": "GPIO port B bit 7 with LPTIM/I2C/USART/LCD segment/timer/comparator alternate functions"
      },
      {
        "number": "44",
        "name": "PH3-BOOT0",
        "type": "input",
        "description": "Boot mode selection pin, selects between flash memory boot and system bootloader execution at reset"
      },
      {
        "number": "45",
        "name": "PB8",
        "type": "bidirectional",
        "description": "GPIO port B bit 8 with I2C/CAN/LCD segment/SDMMC/timer/SAI alternate functions"
      },
      {
        "number": "46",
        "name": "PB9",
        "type": "bidirectional",
        "description": "GPIO port B bit 9 with I2C/SPI/CAN/LCD common/SDMMC/SAI alternate functions"
      },
      {
        "number": "47",
        "name": "VSS",
        "type": "power_out",
        "description": "Ground return pin for digital power supply circuits"
      },
      {
        "number": "48",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital power supply (1.71-3.6 V)"
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: PC13, PC14, and PC15 are supplied through the power switch with 3 mA max current sink; speed max 2 M; PA13, PA14, PB4 have internal pull-up/pull-down after reset for JTAG/SWD debug functions. See Table ; FT_a and FT_fa pins (PA0, PA4, PA5, PA6, PA7, PB0, PB1, PB2, PB4) are 5V tolerant only when analog s"
        ],
        "pages_sent": 86,
        "cost_usd": 0.5592,
        "at": "2026-10-05T21:35:41"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588894017823625216",
        "pages": 227,
        "sha256": "471e1cceea40b1fa",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 48,
        "described": 48,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "LQFP-48(7x7)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "48"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "stm32l433cct3"
  ],
  "discovery_pitch": "STM32L433CCT3 (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",
    "stm32l433cct3.kicad_sym",
    "stm32l433cct3.kicad_mod",
    "stm32l433cct3.glb",
    "stm32l433cct3.step",
    "stm32l433cct3.lbr",
    "docs/hero.png",
    "docs/stm32l433cct3-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "stm32l433cct3-hero.glb",
    "stm32l433cct3-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}