STM32L433RCT3

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm32l433rct3",
  "title": "STM32L433RCT3",
  "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",
    "stm32l433rct3",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STM32L433RCT3",
    "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/8590904005998555136",
    "parts": {
      "symbol": "stm32l433rct3.kicad_sym",
      "footprint": "stm32l433rct3.kicad_mod",
      "model_3d": "stm32l433rct3-etched.glb",
      "model_3d_plain": "stm32l433rct3.glb",
      "model_3d_step": "stm32l433rct3-etched.step",
      "model_3d_step_plain": "stm32l433rct3.step",
      "lbr": "stm32l433rct3.lbr"
    },
    "distributor_links": {
      "lcsc": "C3018877",
      "digikey": "497-17967-ND",
      "mouser": "511-STM32L433RCT3"
    },
    "distributor_check": {
      "checked_at": "2026-09-29T14:30:00Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-17967-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32L433RCT3",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VBAT",
        "type": "power_in",
        "description": "Battery supply voltage input pin supporting RTC, backup registers, and VBAT mode operation from 1.55 V to 3.6 V."
      },
      {
        "number": "2",
        "name": "PC13",
        "type": "bidirectional",
        "description": "Port C pin 13, 5V-tolerant general purpose I/O with RTC tamper/timestamp/alarm and wakeup capability, subject to 3 mA sink current limitation."
      },
      {
        "number": "3",
        "name": "PC14-OSC32_IN (PC14)",
        "type": "bidirectional",
        "description": "Port C pin 14 / 32 kHz oscillator input, 5V-tolerant I/O pin that can be configured as oscillator crystal input or general purpose I/O."
      },
      {
        "number": "4",
        "name": "PC15-OSC32_OUT (PC15)",
        "type": "bidirectional",
        "description": "Port C pin 15 / 32 kHz oscillator output, 5V-tolerant I/O pin that can be configured as oscillator crystal output or general purpose I/O."
      },
      {
        "number": "5",
        "name": "PH0-OSC_IN (PH0)",
        "type": "bidirectional",
        "description": "Port H pin 0 / Main oscillator input, 5V-tolerant I/O pin for external crystal oscillator or external clock input (4 to 48 MHz)."
      },
      {
        "number": "6",
        "name": "PH1-OSC_OUT (PH1)",
        "type": "bidirectional",
        "description": "Port H pin 1 / Main oscillator output, 5V-tolerant I/O pin for external crystal oscillator feedback path."
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "input",
        "description": "System reset input pin with embedded weak pull-up resistor, reset is asserted when pin is pulled low; active low reset."
      },
      {
        "number": "8",
        "name": "PC0",
        "type": "bidirectional",
        "description": "Port C pin 0, 5V-tolerant I/O with analog function capability, can be used for ADC channel 1, LPTIM1/LPTIM2 input or LCD segment."
      },
      {
        "number": "9",
        "name": "PC1",
        "type": "bidirectional",
        "description": "Port C pin 1, 5V-tolerant I/O with analog function capability, can be used for ADC channel 2, LPTIM1 output or LCD segment."
      },
      {
        "number": "10",
        "name": "PC2",
        "type": "bidirectional",
        "description": "Port C pin 2, 5V-tolerant I/O with analog function capability, can be used for ADC channel 3, LPTIM1 input or LCD segment."
      },
      {
        "number": "11",
        "name": "PC3",
        "type": "bidirectional",
        "description": "Port C pin 3, 5V-tolerant I/O with analog functions including ADC channel 4, LPTIM1 ETR, SPI2_MOSI, SAI1_SD_A or LCD_VLCD."
      },
      {
        "number": "12",
        "name": "VSSA/VREF-",
        "type": "power_in",
        "description": "Analog ground supply and negative analog voltage reference pin; must be connected to ground with adequate bypassing."
      },
      {
        "number": "13",
        "name": "VDDA/VREF+",
        "type": "power_in",
        "description": "Analog supply voltage and positive reference pin for ADC/DAC/OPAMP/COMP from 1.62 V to 3.6 V; must be bypassed with 100 nF ceramic capacitor."
      },
      {
        "number": "14",
        "name": "PA0",
        "type": "bidirectional",
        "description": "Port A pin 0, 5V-tolerant I/O with analog functions including ADC channel 5, OPAMP1 non-inverting input, COMP1 input and RTC wakeup."
      },
      {
        "number": "15",
        "name": "PA1",
        "type": "bidirectional",
        "description": "Port A pin 1, 5V-tolerant I/O with LCD segment function, can be used for TIM2_CH2, I2C1_SMBA, SPI1_SCK or ADC channel 6."
      },
      {
        "number": "16",
        "name": "PA2",
        "type": "bidirectional",
        "description": "Port A pin 2, 5V-tolerant I/O with analog capability, supports USART2_TX, LPUART1_TX, QUADSPI_BK1_NCS, LCD_SEG1 and ADC channel 7."
      },
      {
        "number": "17",
        "name": "PA3",
        "type": "bidirectional",
        "description": "Port A pin 3, 3.3V-tolerant I/O with analog capability, can be used for ADC channel 8, OPAMP1 output, COMP2 input or SAI1_MCLK_A."
      },
      {
        "number": "18",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin providing return path for all currents; must be connected to system ground."
      },
      {
        "number": "19",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply pin (1.71 V to 3.6 V) for core logic; must be bypassed with 100 nF ceramic capacitor close to pin."
      },
      {
        "number": "20",
        "name": "PA4",
        "type": "bidirectional",
        "description": "Port A pin 4, 3.3V-tolerant I/O with analog capability, supports DAC1_OUT1, COMP1/COMP2 input, ADC channel 9 or LPTIM2_OUT."
      },
      {
        "number": "21",
        "name": "PA5",
        "type": "bidirectional",
        "description": "Port A pin 5, 3.3V-tolerant I/O with analog capability, supports DAC1_OUT2, COMP1/COMP2 input, ADC channel 10 or SPI1_SCK."
      },
      {
        "number": "22",
        "name": "PA6",
        "type": "bidirectional",
        "description": "Port A pin 6, 5V-tolerant I/O with analog function capability, can be used for ADC channel 11, COMP1 output, TIM1_BKIN or LPUART1_CTS."
      },
      {
        "number": "23",
        "name": "PA7",
        "type": "bidirectional",
        "description": "Port A pin 7, 5V-tolerant I/O with analog function capability, can be used for ADC channel 12, COMP2 output, TIM1_CH1N or SPI1_MOSI."
      },
      {
        "number": "24",
        "name": "PC4",
        "type": "bidirectional",
        "description": "Port C pin 4, 5V-tolerant I/O with analog capability, can be used for ADC channel 13, COMP1 input or LCD_SEG22."
      },
      {
        "number": "25",
        "name": "PC5",
        "type": "bidirectional",
        "description": "Port C pin 5, 5V-tolerant I/O with analog capability, can be used for ADC channel 14, COMP1 input or LCD_SEG23 with RTC wakeup."
      },
      {
        "number": "26",
        "name": "PB0",
        "type": "bidirectional",
        "description": "Port B pin 0, 5V-tolerant I/O with analog capability, supports ADC channel 15, COMP1 output, TIM1_CH2N or QUADSPI_BK1_IO1."
      },
      {
        "number": "27",
        "name": "PB1",
        "type": "bidirectional",
        "description": "Port B pin 1, 5V-tolerant I/O with analog capability, supports ADC channel 16, COMP1 input, TIM1_CH3N or QUADSPI_BK1_IO0."
      },
      {
        "number": "28",
        "name": "PB2",
        "type": "bidirectional",
        "description": "Port B pin 2, 5V-tolerant I/O with analog functions, supports RTC_OUT, LPTIM1_OUT, COMP1 input or LCD_VLCD function."
      },
      {
        "number": "29",
        "name": "PB10",
        "type": "bidirectional",
        "description": "Port B pin 10, 5V-tolerant I/O with LCD function and SAI capability, supports TIM2_CH3, I2C2_SCL, USART3_TX or COMP1 output."
      },
      {
        "number": "30",
        "name": "PB11",
        "type": "bidirectional",
        "description": "Port B pin 11, 5V-tolerant I/O with LCD function, supports TIM2_CH4, I2C2_SDA, USART3_RX or COMP2 output."
      },
      {
        "number": "31",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin providing return path for all currents; must be connected to system ground."
      },
      {
        "number": "32",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply pin (1.71 V to 3.6 V) for core logic; must be bypassed with 100 nF ceramic capacitor close to pin."
      },
      {
        "number": "33",
        "name": "PB12",
        "type": "bidirectional",
        "description": "Port B pin 12, 5V-tolerant I/O with LCD function, supports TIM1_BKIN, SPI2_NSS, USART3_CK, TSC_G1_IO1 or SAI1_FS_A."
      },
      {
        "number": "34",
        "name": "PB13",
        "type": "bidirectional",
        "description": "Port B pin 13, 5V-tolerant I/O with LCD function, supports TIM1_CH1N, I2C2_SCL, SPI2_SCK, USART3_CTS or SAI1_SCK_A."
      },
      {
        "number": "35",
        "name": "PB14",
        "type": "bidirectional",
        "description": "Port B pin 14, 5V-tolerant I/O with LCD function, supports TIM1_CH2N, I2C2_SDA, SPI2_MISO, USART3_RTS_DE or SAI1_MCLK_A."
      },
      {
        "number": "36",
        "name": "PB15",
        "type": "bidirectional",
        "description": "Port B pin 15, 5V-tolerant I/O with LCD function, supports RTC_REFIN, TIM1_CH3N, SPI2_MOSI or SAI1_SD_A."
      },
      {
        "number": "37",
        "name": "PC6",
        "type": "bidirectional",
        "description": "Port C pin 6, 5V-tolerant I/O with LCD function, supports TSC_G4_IO1, LCD_SEG24 or SDMMC1_D6."
      },
      {
        "number": "38",
        "name": "PC7",
        "type": "bidirectional",
        "description": "Port C pin 7, 5V-tolerant I/O with LCD function, supports TSC_G4_IO2, LCD_SEG25 or SDMMC1_D7."
      },
      {
        "number": "39",
        "name": "PC8",
        "type": "bidirectional",
        "description": "Port C pin 8, 5V-tolerant I/O with LCD function, supports TSC_G4_IO3, LCD_SEG26 or SDMMC1_D0."
      },
      {
        "number": "40",
        "name": "PC9",
        "type": "bidirectional",
        "description": "Port C pin 9, 5V-tolerant I/O with LCD function, supports TSC_G4_IO4, USB_NOE, LCD_SEG27 or SDMMC1_D1."
      },
      {
        "number": "41",
        "name": "PA8",
        "type": "bidirectional",
        "description": "Port A pin 8, 5V-tolerant I/O with LCD function, supports MCO, TIM1_CH1, USART1_CK, LCD_COM0 or SAI1_SCK_A."
      },
      {
        "number": "42",
        "name": "PA9",
        "type": "bidirectional",
        "description": "Port A pin 9, 5V-tolerant I/O with LCD and SAI functions, supports TIM1_CH2, I2C1_SCL, USART1_TX or LCD_COM1."
      },
      {
        "number": "43",
        "name": "PA10",
        "type": "bidirectional",
        "description": "Port A pin 10, 5V-tolerant I/O with LCD and SAI functions, supports TIM1_CH3, I2C1_SDA, USART1_RX or LCD_COM2."
      },
      {
        "number": "44",
        "name": "PA11",
        "type": "bidirectional",
        "description": "Port A pin 11, 5V-tolerant I/O with USB function, supports TIM1_CH4, SPI1_MISO, COMP1 output, USART1_CTS, CAN1_RX or USB_DM."
      },
      {
        "number": "45",
        "name": "PA12",
        "type": "bidirectional",
        "description": "Port A pin 12, 5V-tolerant I/O with USB function, supports TIM1_ETR, SPI1_MOSI, USART1_RTS_DE, CAN1_TX or USB_DP."
      },
      {
        "number": "46",
        "name": "PA13 (JTMS-SWDIO)",
        "type": "bidirectional",
        "description": "Port A pin 13 / JTAG TMS / SWD I/O, 5V-tolerant debug pin with internal pull-up; supports JTMS-SWDIO, IR_OUT, USB_NOE or SWPMI1_TX."
      },
      {
        "number": "47",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin providing return path for all currents; must be connected to system ground."
      },
      {
        "number": "48",
        "name": "VDDUSB",
        "type": "power_in",
        "description": ""
      },
      {
        "number": "49",
        "name": "PA14 (JTCK-SWCLK)",
        "type": "bidirectional",
        "description": "Port A pin 14 / JTAG TCK / SWD CLK, 5V-tolerant debug pin with internal pull-down; supports JTCK-SWCLK, LPTIM1_OUT, I2C1_SMBA or SWPMI1_RX."
      },
      {
        "number": "50",
        "name": "PA15 (JTDI)",
        "type": "bidirectional",
        "description": "Port A pin 15 / JTAG TDI, 5V-tolerant I/O with LCD function and debug capability; supports JTDI, TIM2_CH1, USART2_RX, SPI1_NSS or TSC_G3_IO1."
      },
      {
        "number": "51",
        "name": "PC10",
        "type": "bidirectional",
        "description": "Port C pin 10, 5V-tolerant I/O with LCD function, supports SPI3_SCK, USART3_TX, TSC_G3_IO2 or SDMMC1_D2."
      },
      {
        "number": "52",
        "name": "PC11",
        "type": "bidirectional",
        "description": "Port C pin 11, 5V-tolerant I/O with LCD function, supports SPI3_MISO, USART3_RX, TSC_G3_IO3 or SDMMC1_D3."
      },
      {
        "number": "53",
        "name": "PC12",
        "type": "bidirectional",
        "description": "Port C pin 12, 5V-tolerant I/O with LCD function, supports SPI3_MOSI, USART3_CK, TSC_G3_IO4 or SDMMC1_CK."
      },
      {
        "number": "54",
        "name": "PD2",
        "type": "bidirectional",
        "description": "Port D pin 2, 5V-tolerant I/O with LCD function, supports USART3_RTS_DE, TSC_SYNC, LCD_COM7/LCD_SEG31/LCD_SEG43 or SDMMC1_CMD."
      },
      {
        "number": "55",
        "name": "PB3 (JTDO-TRACESWO)",
        "type": "bidirectional",
        "description": "Port B pin 3 / JTAG TDO / TRACE SWO, 5V-tolerant I/O with analog and LCD functions; supports JTDO-TRACESWO, TIM2_CH2, SPI1_SCK, USART1_RTS_DE or SAI1_SCK_B."
      },
      {
        "number": "56",
        "name": "PB4 (NJTRST)",
        "type": "bidirectional",
        "description": "Port B pin 4 / JTAG NTRST, 5V-tolerant I/O with analog and LCD functions; supports NJTRST, I2C3_SDA, SPI1_MISO, USART1_CTS or TSC_G2_IO1."
      },
      {
        "number": "57",
        "name": "PB5",
        "type": "bidirectional",
        "description": "Port B pin 5, 5V-tolerant I/O with LCD function, supports LPTIM1_IN1, I2C1_SMBA, SPI1_MOSI, USART1_CK or TSC_G2_IO2."
      },
      {
        "number": "58",
        "name": "PB6",
        "type": "bidirectional",
        "description": "Port B pin 6, 5V-tolerant I/O with analog function, supports LPTIM1_ETR, I2C1_SCL, USART1_TX, TSC_G2_IO3 or SAI1_FS_B."
      },
      {
        "number": "59",
        "name": "PB7",
        "type": "bidirectional",
        "description": "Port B pin 7, 5V-tolerant I/O with analog function, supports LPTIM1_IN2, I2C1_SDA, USART1_RX or TSC_G2_IO4 with PVD_IN analog input."
      },
      {
        "number": "60",
        "name": "PH3-BOOT0",
        "type": "bidirectional",
        "description": "Port H pin 3 / Boot configuration pin, general purpose I/O for selecting boot mode (from flash, RAM or system memory) during power-up."
      },
      {
        "number": "61",
        "name": "PB8",
        "type": "bidirectional",
        "description": "Port B pin 8, 5V-tolerant I/O with LCD and SAI functions, supports I2C1_SCL, CAN1_RX, LCD_SEG16, SDMMC1_D4 or SAI1_MCLK_A."
      },
      {
        "number": "62",
        "name": "PB9",
        "type": "bidirectional",
        "description": "Port B pin 9, 5V-tolerant I/O with LCD and SAI functions, supports IR_OUT, I2C1_SDA, SPI2_NSS, CAN1_TX, LCD_COM3 or SDMMC1_D5."
      },
      {
        "number": "63",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin providing return path for all currents; must be connected to system ground."
      },
      {
        "number": "64",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply pin (1.71 V to 3.6 V) for core logic; must be bypassed with 100 nF ceramic capacitor close to pin."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590904005998555136",
        "pages": 227,
        "sha256": "471e1cceea40b1fa",
        "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": "STMicroelectronics STM32_open_pin_data (STM32L433R(B-C)Tx.xml, LQFP64)"
      },
      "correction": {
        "at": "2026-10-01",
        "what": "1 of 64 pins corrected",
        "how": "pinout replaced from STMicroelectronics STM32_open_pin_data (STM32L433R(B-C)Tx.xml, LQFP64); the previous pinout came from an earlier 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": [
    "stm32l433rct3"
  ],
  "discovery_pitch": "STM32L433RCT3 (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",
    "stm32l433rct3.kicad_sym",
    "stm32l433rct3.kicad_mod",
    "stm32l433rct3.glb",
    "stm32l433rct3.step",
    "stm32l433rct3.lbr",
    "docs/hero.png",
    "docs/stm32l433rct3-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  }
}