STM32L433CBT6

{
  "slug": "stm32l433cbt6",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm32l433cbt6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "stm32l433cbt6.kicad_sym",
    "stm32l433cbt6.kicad_mod",
    "stm32l433cbt6.glb",
    "stm32l433cbt6.step",
    "stm32l433cbt6.lbr",
    "docs/hero.png",
    "docs/stm32l433cbt6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "stm32l433cbt6-hero.glb",
    "stm32l433cbt6-hero.overlay.json"
  ],
  "component": {
    "mpn": "STM32L433CBT6",
    "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/8586182956763795456",
    "parts": {
      "symbol": "stm32l433cbt6.kicad_sym",
      "footprint": "stm32l433cbt6.kicad_mod",
      "model_3d": "stm32l433cbt6-hero.glb",
      "model_3d_plain": "stm32l433cbt6.glb",
      "model_3d_step": "stm32l433cbt6-etched.step",
      "model_3d_step_plain": "stm32l433cbt6.step",
      "lbr": "stm32l433cbt6.lbr"
    },
    "distributor_links": {
      "lcsc": "C94785",
      "digikey": "497-17961-ND",
      "mouser": "511-STM32L433CBT6"
    },
    "distributor_check": {
      "checked_at": "2026-10-10T15:57:08Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-17961-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32L433CBT6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup-domain supply, 1.55 V to 3.6 V, powering the RTC and 32x32-bit backup registers (200 nA in VBAT mode)."
      },
      {
        "number": "2",
        "name": "PC13",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT) supplied through the power switch, which sinks only 3 mA, so output speed is limited to 2 MHz at 30 pF and the pin must not source current such as driving an LED; alternate functions include EVENTOUT, with RTC_TAMP1/RTC_TS/RTC_OUT/WKUP2 as additional functions."
      },
      {
        "number": "3",
        "name": "PC14-OSC32_IN (PC14)",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT) with the same power-switch limits as PC13 (3 mA, 2 MHz at 30 pF max output), also used as OSC32_IN for the 32.768 kHz LSE crystal."
      },
      {
        "number": "4",
        "name": "PC15-OSC32_OUT (PC15)",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT) with the same power-switch limits as PC13 (3 mA, 2 MHz at 30 pF max output), also used as OSC32_OUT for the 32.768 kHz LSE crystal."
      },
      {
        "number": "5",
        "name": "PH0-OSC_IN (PH0)",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT) that serves as OSC_IN, the input of the 4 to 48 MHz crystal oscillator (HSE)."
      },
      {
        "number": "6",
        "name": "PH1-OSC_OUT (PH1)",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT) that serves as OSC_OUT, the output of the 4 to 48 MHz crystal oscillator (HSE)."
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Bidirectional reset pin (RST type) with an embedded weak pull-up resistor."
      },
      {
        "number": "8",
        "name": "VSSA/VREF-",
        "type": "power_in",
        "description": "Analog ground, which also serves as the ADC negative reference VREF- (internally connected to VSSA on this package)."
      },
      {
        "number": "9",
        "name": "VDDA/VREF+",
        "type": "power_in",
        "description": "Analog supply (1.62 V to 3.6 V when ADC or COMP is used, 1.8 V for DAC or OPAMP) that also serves as the ADC positive reference VREF+ (internally connected to VDDA on this package)."
      },
      {
        "number": "10",
        "name": "PA0",
        "type": "bidirectional",
        "description": "5 V tolerant analog-capable I/O (FT_a) with TIM2_CH1, USART2_CTS, COMP1_OUT, SAI1_EXTCLK and TIM2_ETR alternate functions, and ADC1_IN5, OPAMP1_VINP, COMP1_INM and RTC_TAMP2/WKUP1 as additional functions."
      },
      {
        "number": "11",
        "name": "PA1",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_la) with TIM2_CH2, I2C1_SMBA, SPI1_SCK, USART2_RTS_DE and LCD_SEG0 alternate functions, and ADC1_IN6, OPAMP1_VINM and COMP1_INP as additional functions; supplied for analog switch use by VDDA."
      },
      {
        "number": "12",
        "name": "PA2",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_la) with TIM2_CH3, USART2_TX, LPUART1_TX, QUADSPI_BK1_NCS and LCD_SEG1 alternate functions, and ADC1_IN7, COMP2_INM and WKUP4/LSCO as additional functions."
      },
      {
        "number": "13",
        "name": "PA3",
        "type": "bidirectional",
        "description": "3.6 V tolerant I/O (TT_la) with TIM2_CH4, USART2_RX, LPUART1_RX, QUADSPI_CLK and LCD_SEG2 alternate functions, and ADC1_IN8, OPAMP1_VOUT and COMP2_INP as additional functions."
      },
      {
        "number": "14",
        "name": "PA4",
        "type": "bidirectional",
        "description": "3.6 V tolerant analog I/O (TT_a) with SPI1_NSS, SPI3_NSS, USART2_CK and LPTIM2_OUT alternate functions, and ADC1_IN9 and DAC1_OUT1 as additional functions; injected current is limited to -5/0 mA."
      },
      {
        "number": "15",
        "name": "PA5",
        "type": "bidirectional",
        "description": "3.6 V tolerant analog I/O (TT_a) with TIM2_CH1, TIM2_ETR, SPI1_SCK and LPTIM2_ETR alternate functions, and ADC1_IN10 and DAC1_OUT2 as additional functions; injected current is limited to -5/0 mA."
      },
      {
        "number": "16",
        "name": "PA6",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_la) with TIM1_BKIN, SPI1_MISO, USART3_CTS, LPUART1_CTS, QUADSPI_BK1_IO3 and LCD_SEG3 alternate functions, and ADC1_IN11 as an additional function."
      },
      {
        "number": "17",
        "name": "PA7",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_fla) with TIM1_CH1N, I2C3_SCL, SPI1_MOSI, QUADSPI_BK1_IO2 and LCD_SEG4 alternate functions, and ADC1_IN12 as an additional function."
      },
      {
        "number": "18",
        "name": "PB0",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_la) with TIM1_CH2N, SPI1_NSS, USART3_CK, QUADSPI_BK1_IO1 and LCD_SEG5 alternate functions, and ADC1_IN15 as an additional function."
      },
      {
        "number": "19",
        "name": "PB1",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_la) with TIM1_CH3N, USART3_RTS_DE, LPUART1_RTS_DE, QUADSPI_BK1_IO0, LCD_SEG6 and LPTIM2_IN1 alternate functions, and ADC1_IN16 and COMP1_INM as additional functions."
      },
      {
        "number": "20",
        "name": "PB2",
        "type": "bidirectional",
        "description": "5 V tolerant analog-capable I/O (FT_a) with RTC_OUT, LPTIM1_OUT, I2C3_SMBA, LCD_VLCD and EVENTOUT alternate functions, and COMP1_INP as an additional function."
      },
      {
        "number": "21",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_fl) with TIM2_CH3, I2C2_SCL, SPI2_SCK, USART3_TX, LPUART1_RX, TSC_SYNC, QUADSPI_CLK, LCD_SEG10, COMP1_OUT and SAI1_SCK_A alternate functions."
      },
      {
        "number": "22",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_fl) with TIM2_CH4, I2C2_SDA, USART3_RX, LPUART1_TX, QUADSPI_BK1_NCS, LCD_SEG11 and COMP2_OUT alternate functions."
      },
      {
        "number": "23",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin for the digital supply domain."
      },
      {
        "number": "24",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply, 1.71 V to 3.6 V standard operating voltage."
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_l) with TIM1_BKIN, TIM1_BKIN_COMP2, I2C2_SMBA, SPI2_NSS, USART3_CK, LPUART1_RTS_DE, TSC_G1_IO1, LCD_SEG12, SWPMI1_IO, SAI1_FS_A and TIM15_BKIN alternate functions."
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_fl) with TIM1_CH1N, I2C2_SCL, SPI2_SCK, USART3_CTS, LPUART1_CTS, TSC_G1_IO2, LCD_SEG13, SWPMI1_TX, SAI1_SCK_A and TIM15_CH1N alternate functions."
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_fl) with TIM1_CH2N, I2C2_SDA, SPI2_MISO, USART3_RTS_DE, TSC_G1_IO3, LCD_SEG14, SWPMI1_RX, SAI1_MCLK_A and TIM15_CH1 alternate functions."
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_l) with RTC_REFIN, TIM1_CH3N, SPI2_MOSI, TSC_G1_IO4, LCD_SEG15, SWPMI1_SUSPEND, SAI1_SD_A and TIM15_CH2 alternate functions."
      },
      {
        "number": "29",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_l) with MCO, TIM1_CH1, USART1_CK, LCD_COM0, SWPMI1_IO, SAI1_SCK_A, LPTIM2_OUT and EVENTOUT alternate functions."
      },
      {
        "number": "30",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_fl) with TIM1_CH2, I2C1_SCL, USART1_TX, LCD_COM1, SAI1_FS_A and TIM15_BKIN alternate functions."
      },
      {
        "number": "31",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_fl) with TIM1_CH3, I2C1_SDA, USART1_RX, USB_CRS_SYNC, LCD_COM2 and SAI1_SD_A alternate functions."
      },
      {
        "number": "32",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V tolerant USB-capable I/O (FT_u, USB function supplied by VDDUSB) with TIM1_CH4, TIM1_BKIN2, SPI1_MISO, USART1_CTS, CAN1_RX, USB_DM and TIM1_BKIN2_COMP1 alternate functions, and COMP1_OUT as an additional function."
      },
      {
        "number": "33",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V tolerant USB-capable I/O (FT_u, USB function supplied by VDDUSB) with TIM1_ETR, SPI1_MOSI, USART1_RTS_DE, CAN1_TX and USB_DP alternate functions."
      },
      {
        "number": "34",
        "name": "PA13 (JTMS-SWDIO)",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT) that after reset is the JTMS-SWDIO debug function with an internal pull-up enabled, also with IR_OUT, USB_NOE, SWPMI1_TX, SAI1_SD_B and EVENTOUT alternate functions."
      },
      {
        "number": "35",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin for the digital supply domain."
      },
      {
        "number": "36",
        "name": "VDDUSB",
        "type": "power_in",
        "description": "USB supply, 3.0 V to 3.6 V when USB is used (0 to 3.6 V when USB is not used)."
      },
      {
        "number": "37",
        "name": "PA14 (JTCK-SWCLK)",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT) that after reset is the JTCK-SWCLK debug function with an internal pull-down enabled, also with LPTIM1_OUT, I2C1_SMBA, SWPMI1_RX, SAI1_FS_B and EVENTOUT alternate functions."
      },
      {
        "number": "38",
        "name": "PA15 (JTDI)",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_l) that after reset is the JTDI debug function with an internal pull-up enabled, also with TIM2_CH1, TIM2_ETR, USART2_RX, SPI1_NSS, SPI3_NSS, USART3_RTS_DE, TSC_G3_IO1, LCD_SEG17 and SWPMI1_SUSPEND alternate functions."
      },
      {
        "number": "39",
        "name": "PB3 (JTDO-TRACESWO)",
        "type": "bidirectional",
        "description": "5 V tolerant analog-capable I/O (FT_la) that after reset is the JTDO-TRACESWO debug function, also with TIM2_CH2, SPI1_SCK, SPI3_SCK, USART1_RTS_DE, LCD_SEG7, SAI1_SCK_B and EVENTOUT alternate functions, and COMP2_INM as an additional function."
      },
      {
        "number": "40",
        "name": "PB4 (NJTRST)",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_fla) that after reset is the NJTRST debug function with an internal pull-up enabled, also with I2C3_SDA, SPI1_MISO, SPI3_MISO, USART1_CTS, TSC_G2_IO1, LCD_SEG8, SAI1_MCLK_B and EVENTOUT alternate functions, and COMP2_INP as an additional function."
      },
      {
        "number": "41",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_l) with LPTIM1_IN1, I2C1_SMBA, SPI1_MOSI, SPI3_MOSI, USART1_CK, TSC_G2_IO2, LCD_SEG9, COMP2_OUT, SAI1_SD_B and TIM16_BKIN alternate functions."
      },
      {
        "number": "42",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V tolerant analog-capable I/O (FT_fa) with LPTIM1_ETR, I2C1_SCL, USART1_TX, TSC_G2_IO3, SAI1_FS_B and TIM16_CH1N alternate functions, and COMP2_INP as an additional function."
      },
      {
        "number": "43",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V tolerant analog-capable I/O (FT_fla) with LPTIM1_IN2, I2C1_SDA, USART1_RX, TSC_G2_IO4 and LCD_SEG21 alternate functions, and COMP2_INM and PVD_IN as additional functions."
      },
      {
        "number": "44",
        "name": "PH3/BOOT0",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT) that is also the BOOT0 boot-mode pin, with EVENTOUT as its alternate function."
      },
      {
        "number": "45",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_fl) with I2C1_SCL, CAN1_RX, LCD_SEG16, SDMMC1_D4, SAI1_MCLK_A and TIM16_CH1 alternate functions."
      },
      {
        "number": "46",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V tolerant I/O (FT_fl) with IR_OUT, I2C1_SDA, SPI2_NSS, CAN1_TX, LCD_COM3, SDMMC1_D5 and SAI1_FS_A alternate functions."
      },
      {
        "number": "47",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin for the digital supply domain."
      },
      {
        "number": "48",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply, 1.71 V to 3.6 V standard operating voltage."
      }
    ],
    "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 STM32L433CBT6 decodes as C = 48 pins, B = 128 KB Flash, T = LQFP package, so the LQFP48 (7x7) va; Pin 36 is printed as 'VDD' with 'USB' on the following line in Table 14; it is named VDDUSB here, as; Pins 8 and 9 are shared with the analog reference pins: pin 8 is VSSA/VREF- and pin 9 is VDDA/VREF+."
        ],
        "pages_sent": 81,
        "cost_usd": 0.3579,
        "at": "2026-10-10T15:56:44"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586182956763795456",
        "pages": 205,
        "sha256": "b352990bb6ff2486",
        "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"
    },
    "models_3d": [
      {
        "file": "stm32l433cbt6.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.0,
          9.0,
          1.5
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "9dea352d93177c2904afd7d7b68ea8855ce1ab691f69f8b3e13655600514b6bf",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm32l433cbt6-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.0,
          9.0,
          1.5
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "8198911957966c4089ea7191a240156c7c1d9f389fba24a9b8a7d887ca0a697a",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}