STM32L433CBT7

{
  "slug": "stm32l433cbt7",
  "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",
    "stm32l433cbt7",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "stm32l433cbt7.kicad_sym",
    "stm32l433cbt7.kicad_mod",
    "stm32l433cbt7.glb",
    "stm32l433cbt7.step",
    "stm32l433cbt7.lbr",
    "docs/hero.png",
    "docs/stm32l433cbt7-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "stm32l433cbt7-hero.glb",
    "stm32l433cbt7-hero.overlay.json"
  ],
  "component": {
    "mpn": "STM32L433CBT7",
    "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/8553542743956463616",
    "parts": {
      "symbol": "stm32l433cbt7.kicad_sym",
      "footprint": "stm32l433cbt7.kicad_mod",
      "model_3d": "stm32l433cbt7-hero.glb",
      "model_3d_plain": "stm32l433cbt7.glb",
      "model_3d_step": "stm32l433cbt7-etched.step",
      "model_3d_step_plain": "stm32l433cbt7.step",
      "lbr": "stm32l433cbt7.lbr"
    },
    "distributor_links": {
      "lcsc": "C5269893",
      "digikey": "497-STM32L433CBT7TR-ND",
      "mouser": "511-STM32L433CBT7"
    },
    "distributor_check": {
      "checked_at": "2026-10-10T23:43:24Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-STM32L433CBT7TR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32L433CBT7",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup-domain supply for the RTC and backup registers, specified at 1.55 V to 3.6 V (Table 22), with RTC_TAMP3/WKUP3 as an additional function."
      },
      {
        "number": "2",
        "name": "PC13",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O supplied through the power switch, limited to 3 mA so output speed must not exceed 2 MHz at 30 pF and the pin must not source LED-type loads; additional functions are RTC_TAMP1, RTC_TS, RTC_OUT and WKUP2."
      },
      {
        "number": "3",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O supplied through the power switch with the same 3 mA limit and 2 MHz / 30 pF output restriction, and it carries the OSC32_IN (32 kHz crystal) function."
      },
      {
        "number": "4",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O supplied through the power switch with the same 3 mA limit and 2 MHz / 30 pF output restriction, and it carries the OSC32_OUT (32 kHz crystal) function."
      },
      {
        "number": "5",
        "name": "PH0-OSC_IN",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O that also serves as OSC_IN, the external high-speed oscillator input (4 to 48 MHz crystal per the features list)."
      },
      {
        "number": "6",
        "name": "PH1-OSC_OUT",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O that also serves as OSC_OUT, the external high-speed oscillator output (4 to 48 MHz crystal per the features list)."
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Bidirectional active-low reset pin with an embedded weak pull-up resistor (type RST in Table 14/15)."
      },
      {
        "number": "8",
        "name": "VSSA/VREF-",
        "type": "power_in",
        "description": "Analog ground and negative ADC reference; per the ADC note, VREF- can be internally connected to VSSA depending on the package."
      },
      {
        "number": "9",
        "name": "VDDA/VREF+",
        "type": "power_in",
        "description": "Analog supply input (VDDA 1.62 V to 3.6 V when ADC or COMP is used, 1.8 V for DAC or OPAMP, 2.4 V for VREFBUF per Table 22) that also acts as VREF+, internally connected to VDDA depending on the package."
      },
      {
        "number": "10",
        "name": "PA0",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_a) I/O with analog switch supplied by VDDA; alternate functions include TIM2_CH1, USART2_CTS, COMP1_OUT, SAI1_EXTCLK and TIM2_ETR, and additional functions include OPAMP1_VINP, ADC1_IN5 and WKUP1."
      },
      {
        "number": "11",
        "name": "PA1",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_la) I/O with LCD function supplied by VLCD and analog switch supplied by VDDA; alternate functions include TIM2_CH2, I2C1_SMBA, SPI1_SCK, USART2_RTS_DE and LCD_SEG0, and additional functions include OPAMP1_VINM, COMP1_INP and ADC1_IN6."
      },
      {
        "number": "12",
        "name": "PA2",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_la) I/O with LCD function supplied by VLCD and analog switch supplied by VDDA; alternate functions include TIM2_CH3, USART2_TX, LPUART1_TX, QUADSPI_BK1_NCS and COMP2_OUT, and additional functions include COMP2_INM, ADC1_IN7 and WKUP4/LSCO."
      },
      {
        "number": "13",
        "name": "PA3",
        "type": "bidirectional",
        "description": "3.6 V-tolerant (TT_la) I/O with LCD function supplied by VLCD and analog switch supplied by VDDA; alternate functions include TIM2_CH4, USART2_RX, LPUART1_RX, QUADSPI_CLK and SAI1_MCLK_A, and additional functions include OPAMP1_VOUT, COMP2_INP and ADC1_IN8."
      },
      {
        "number": "14",
        "name": "PA4",
        "type": "bidirectional",
        "description": "3.6 V-tolerant (TT_a) I/O with analog switch supplied by VDDA; alternate functions include SPI1_NSS, SPI3_NSS, USART2_CK, SAI1_FS_B and LPTIM2_OUT, and additional functions include COMP1_INM, COMP2_INM, ADC1_IN9 and DAC1_OUT1."
      },
      {
        "number": "15",
        "name": "PA5",
        "type": "bidirectional",
        "description": "3.6 V-tolerant (TT_a) I/O with analog switch supplied by VDDA; alternate functions include TIM2_CH1, TIM2_ETR, SPI1_SCK and LPTIM2_ETR, and additional functions include COMP1_INM, COMP2_INM, ADC1_IN10 and DAC1_OUT2."
      },
      {
        "number": "16",
        "name": "PA6",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_la) I/O with LCD function supplied by VLCD and analog switch supplied by VDDA; alternate functions include TIM1_BKIN, SPI1_MISO, COMP1_OUT, USART3_CTS, LPUART1_CTS and QUADSPI_BK1_IO3, and additional function is ADC1_IN11."
      },
      {
        "number": "17",
        "name": "PA7",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_fla) I/O with Fm+ capability, LCD function supplied by VLCD and analog switch supplied by VDDA; alternate functions include TIM1_CH1N, I2C3_SCL, SPI1_MOSI, QUADSPI_BK1_IO2 and COMP2_OUT, and additional function is ADC1_IN12."
      },
      {
        "number": "18",
        "name": "PB0",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_la) I/O with LCD function supplied by VLCD and analog switch supplied by VDDA; alternate functions include TIM1_CH2N, SPI1_NSS, USART3_CK, QUADSPI_BK1_IO1 and COMP1_OUT, and additional function is ADC1_IN15."
      },
      {
        "number": "19",
        "name": "PB1",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_la) I/O with LCD function supplied by VLCD and analog switch supplied by VDDA; alternate functions include TIM1_CH3N, USART3_RTS_DE, LPUART1_RTS_DE, QUADSPI_BK1_IO0 and LPTIM2_IN1, and additional functions include COMP1_INM and ADC1_IN16."
      },
      {
        "number": "20",
        "name": "PB2",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_a) I/O with analog switch supplied by VDDA; alternate functions include RTC_OUT, LPTIM1_OUT, I2C3_SMBA and LCD_VLCD, and additional function is COMP1_INP."
      },
      {
        "number": "21",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_fl) I/O with Fm+ capability and LCD function supplied by VLCD; alternate functions include TIM2_CH3, I2C2_SCL, SPI2_SCK, USART3_TX, LPUART1_RX, TSC_SYNC, QUADSPI_CLK and SAI1_SCK_A."
      },
      {
        "number": "22",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_fl) I/O with Fm+ capability and LCD function supplied by VLCD; alternate functions include TIM2_CH4, I2C2_SDA, USART3_RX, LPUART1_TX, QUADSPI_BK1_NCS and COMP2_OUT."
      },
      {
        "number": "23",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground reference."
      },
      {
        "number": "24",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply input; standard operating voltage range is 1.71 V to 3.6 V (Table 22)."
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_l) I/O with LCD function supplied by VLCD; alternate functions include TIM1_BKIN, TIM1_BKIN_COMP2, I2C2_SMBA, SPI2_NSS, USART3_CK, LPUART1_RTS_DE, TSC_G1_IO1, SWPMI1_IO, SAI1_FS_A and TIM15_BKIN."
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_fl) I/O with Fm+ capability and LCD function supplied by VLCD; alternate functions include TIM1_CH1N, I2C2_SCL, SPI2_SCK, USART3_CTS, LPUART1_CTS, TSC_G1_IO2, SWPMI1_TX, SAI1_SCK_A and TIM15_CH1N."
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_fl) I/O with Fm+ capability and LCD function supplied by VLCD; alternate functions include TIM1_CH2N, I2C2_SDA, SPI2_MISO, USART3_RTS_DE, TSC_G1_IO3, SWPMI1_RX, SAI1_MCLK_A and TIM15_CH1."
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_l) I/O with LCD function supplied by VLCD; alternate functions include RTC_REFIN, TIM1_CH3N, SPI2_MOSI, TSC_G1_IO4, SWPMI1_SUSPEND, SAI1_SD_A and TIM15_CH2."
      },
      {
        "number": "29",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_l) I/O with LCD function supplied by VLCD; alternate functions include MCO, TIM1_CH1, USART1_CK, LCD_COM0, SWPMI1_IO, SAI1_SCK_A and LPTIM2_OUT."
      },
      {
        "number": "30",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_fl) I/O with Fm+ capability and LCD function supplied by VLCD; alternate functions include TIM1_CH2, I2C1_SCL, USART1_TX, LCD_COM1, SAI1_FS_A and TIM15_BKIN."
      },
      {
        "number": "31",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_fl) I/O with Fm+ capability and LCD function supplied by VLCD; alternate functions include TIM1_CH3, I2C1_SDA, USART1_RX, USB_CRS_SYNC, LCD_COM2 and SAI1_SD_A."
      },
      {
        "number": "32",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_u) I/O with USB function supplied by VDDUSB; alternate functions include TIM1_CH4, TIM1_BKIN2, SPI1_MISO, COMP1_OUT, USART1_CTS, CAN1_RX and USB_DM."
      },
      {
        "number": "33",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_u) I/O with USB function supplied by VDDUSB; alternate functions include TIM1_ETR, SPI1_MOSI, USART1_RTS_DE, CAN1_TX and USB_DP."
      },
      {
        "number": "34",
        "name": "PA13 (JTMS-SWDIO)",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O that after reset is configured as the JTMS-SWDIO debug function with its internal pull-up enabled; alternate functions include IR_OUT, USB_NOE, SWPMI1_TX and SAI1_SD_B."
      },
      {
        "number": "35",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground reference."
      },
      {
        "number": "36",
        "name": "VDDUSB",
        "type": "power_in",
        "description": "USB supply input; 3.0 V to 3.6 V when USB is used, and 0 to 3.6 V when USB is not used (Table 22)."
      },
      {
        "number": "37",
        "name": "PA14 (JTCK-SWCLK)",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT) I/O that after reset is configured as the JTCK-SWCLK debug function with its internal pull-down enabled; alternate functions include LPTIM1_OUT, I2C1_SMBA, SWPMI1_RX and SAI1_FS_B."
      },
      {
        "number": "38",
        "name": "PA15 (JTDI)",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_l) I/O that after reset is configured as the JTDI debug function with its internal pull-up enabled; alternate functions include TIM2_CH1, TIM2_ETR, USART2_RX, SPI1_NSS, SPI3_NSS, USART3_RTS_DE and TSC_G3_IO1."
      },
      {
        "number": "39",
        "name": "PB3 (JTDO-TRACESWO)",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_la) I/O with LCD function supplied by VLCD and analog switch supplied by VDDA; after reset it is configured as the JTDO-TRACESWO debug function, with alternate functions TIM2_CH2, SPI1_SCK, SPI3_SCK and USART1_RTS_DE, and additional function COMP2_INM."
      },
      {
        "number": "40",
        "name": "PB4 (NJTRST)",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_fla) I/O with Fm+ capability, LCD function supplied by VLCD and analog switch supplied by VDDA; after reset it is configured as the NJTRST debug function with its internal pull-up enabled, with alternate functions I2C3_SDA, SPI1_MISO, SPI3_MISO and USART1_CTS, and additional function COMP2_INP."
      },
      {
        "number": "41",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_l) I/O with LCD function supplied by VLCD; alternate functions include LPTIM1_IN1, I2C1_SMBA, SPI1_MOSI, SPI3_MOSI, USART1_CK, COMP2_OUT, SAI1_SD_B and TIM16_BKIN."
      },
      {
        "number": "42",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_fa) I/O with Fm+ capability and analog switch supplied by VDDA; alternate functions include LPTIM1_ETR, I2C1_SCL, USART1_TX, SAI1_FS_B and TIM16_CH1N, and additional function is COMP2_INP."
      },
      {
        "number": "43",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_fla) I/O with Fm+ capability, LCD function supplied by VLCD and analog switch supplied by VDDA; alternate functions include LPTIM1_IN2, I2C1_SDA, USART1_RX and LCD_SEG21, and additional functions include COMP2_INM and PVD_IN."
      },
      {
        "number": "44",
        "name": "PH3-BOOT0",
        "type": "bidirectional",
        "description": "I/O pin carrying the BOOT0 boot-selection function; Table 15 lists no I/O structure for it and only EVENTOUT as an alternate function."
      },
      {
        "number": "45",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_fl) I/O with Fm+ capability and LCD function supplied by VLCD; alternate functions include I2C1_SCL, CAN1_RX, LCD_SEG16, SDMMC1_D4, SAI1_MCLK_A and TIM16_CH1."
      },
      {
        "number": "46",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V-tolerant (FT_fl) I/O with Fm+ capability and LCD function supplied by VLCD; alternate functions include IR_OUT, I2C1_SDA, SPI2_NSS, CAN1_TX, LCD_COM3, SDMMC1_D5 and SAI1_FS_A."
      },
      {
        "number": "47",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground reference."
      },
      {
        "number": "48",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply input; standard operating voltage range is 1.71 V to 3.6 V (Table 22)."
      }
    ],
    "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: Ordering code STM32L433CBT7 decodes to pin count C = 48 pins, flash B = 128 kB, package T = LQFP, te; Pin 44 PH3-BOOT0 is listed as I/O with no I/O structure in Table 15. The type is mapped to bidirecti; Pins 8 and 9 are shared-function entries in the LQFP48 column (VSSA/VREF- and VDDA/VREF+). The VREF+"
        ],
        "pages_sent": 86,
        "cost_usd": 0.3689,
        "at": "2026-10-10T23:43:02"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8553542743956463616",
        "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"
    },
    "models_3d": [
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        "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": "stm32l433cbt7-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": "13a1430ec9e53dea8c44ccd3a99d2942b075f85255c667c01b0c8e2600cd0b04",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}