STM32L412CBT6

{
  "slug": "stm32l412cbt6",
  "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",
    "stm32l412cbt6",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "stm32l412cbt6.kicad_sym",
    "stm32l412cbt6.kicad_mod",
    "stm32l412cbt6.glb",
    "stm32l412cbt6.step",
    "stm32l412cbt6.lbr",
    "docs/hero.png",
    "docs/stm32l412cbt6-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "stm32l412cbt6-hero.glb",
    "stm32l412cbt6-hero.overlay.json"
  ],
  "component": {
    "mpn": "STM32L412CBT6",
    "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/8588886204322623488",
    "parts": {
      "symbol": "stm32l412cbt6.kicad_sym",
      "footprint": "stm32l412cbt6.kicad_mod",
      "model_3d": "stm32l412cbt6-hero.glb",
      "model_3d_plain": "stm32l412cbt6.glb",
      "model_3d_step": "stm32l412cbt6-etched.step",
      "model_3d_step_plain": "stm32l412cbt6.step",
      "lbr": "stm32l412cbt6.lbr"
    },
    "distributor_links": {
      "lcsc": "C529434",
      "digikey": "497-18227-ND",
      "mouser": "511-STM32L412CBT6"
    },
    "distributor_check": {
      "checked_at": "2026-10-10T22:28:50Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-18227-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32L412CBT6",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup-domain supply for the RTC and 32x32-bit backup registers, specified from 1.55 V to 3.6 V."
      },
      {
        "number": "2",
        "name": "PC13",
        "type": "bidirectional",
        "description": "5 V-tolerant FT I/O with EVENTOUT alternate function and additional functions RTC_TAMP1/RTC_TS/RTC_OUT1/WKUP2."
      },
      {
        "number": "3",
        "name": "PC14-OSC32_IN (PC14)",
        "type": "bidirectional",
        "description": "5 V-tolerant FT I/O with EVENTOUT alternate function; additional function OSC32_IN is the 32 kHz crystal oscillator (LSE) input."
      },
      {
        "number": "4",
        "name": "PC15-OSC32_OUT (PC15)",
        "type": "bidirectional",
        "description": "5 V-tolerant FT I/O with EVENTOUT alternate function; additional function OSC32_OUT is the 32 kHz crystal oscillator (LSE) output."
      },
      {
        "number": "5",
        "name": "PH0-OSC_IN (PH0)",
        "type": "bidirectional",
        "description": "5 V-tolerant FT I/O with EVENTOUT alternate function; additional function OSC_IN is the high-speed crystal oscillator input (4 to 48 MHz crystal oscillator)."
      },
      {
        "number": "6",
        "name": "PH1-OSC_OUT (PH1)",
        "type": "bidirectional",
        "description": "5 V-tolerant FT I/O with EVENTOUT alternate function; additional function OSC_OUT is the high-speed crystal oscillator output (4 to 48 MHz crystal oscillator)."
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Reset pin (RST I/O structure) with an embedded weak pull-up resistor."
      },
      {
        "number": "8",
        "name": "VSSA/VREF-",
        "type": "power_in",
        "description": "Analog ground pin that also serves as the ADC negative reference VREF-; ground pins must stay within 50 mV of each other."
      },
      {
        "number": "9",
        "name": "VDDA/VREF+",
        "type": "power_in",
        "description": "Analog supply pin that also serves as the ADC/COMP positive reference VREF+; VDDA is 1.62 V minimum when ADC or COMP is used, 1.8 V minimum when OPAMP is used, and 3.6 V maximum."
      },
      {
        "number": "10",
        "name": "PA0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_a) with analog switch supplied by VDDA; alternate functions TIM2_CH1, USART2_CTS, COMP1_OUT, TIM2_ETR and EVENTOUT; additional functions OPAMP1_VINP, COMP1_INM, ADC1_IN5 and RTC_TAMP2/WKUP1."
      },
      {
        "number": "11",
        "name": "PA1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_a) with analog switch supplied by VDDA; alternate functions TIM2_CH2, I2C1_SMBA, SPI1_SCK, USART2_RTS_DE, TIM15_CH1N and EVENTOUT; additional functions OPAMP1_VINM, COMP1_INP and ADC1_IN6."
      },
      {
        "number": "12",
        "name": "PA2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_a) with analog switch supplied by VDDA; alternate functions TIM2_CH3, USART2_TX, LPUART1_TX, QUADSPI_BK1_NCS, TIM15_CH1 and EVENTOUT; additional functions ADC12_IN7 and WKUP4/LSCO."
      },
      {
        "number": "13",
        "name": "PA3",
        "type": "bidirectional",
        "description": "3.6 V-tolerant I/O (TT_a) with analog switch supplied by VDDA; alternate functions TIM2_CH4, USART2_RX, LPUART1_RX, QUADSPI_CLK, TIM15_CH2 and EVENTOUT; additional functions OPAMP1_VOUT and ADC12_IN8."
      },
      {
        "number": "14",
        "name": "PA4",
        "type": "bidirectional",
        "description": "3.6 V-tolerant I/O (TT_a) with analog switch supplied by VDDA; alternate functions SPI1_NSS, USART2_CK, LPTIM2_OUT and EVENTOUT; additional functions COMP1_INM and ADC12_IN9."
      },
      {
        "number": "15",
        "name": "PA5",
        "type": "bidirectional",
        "description": "3.6 V-tolerant I/O (TT_a) with analog switch supplied by VDDA; alternate functions TIM2_CH1, TIM2_ETR, SPI1_SCK, LPTIM2_ETR and EVENTOUT; additional functions COMP1_INM and ADC12_IN10."
      },
      {
        "number": "16",
        "name": "PA6",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_a) with analog switch supplied by VDDA; alternate functions TIM1_BKIN, SPI1_MISO, COMP1_OUT, USART3_CTS, LPUART1_CTS, QUADSPI_BK1_IO3, TIM16_CH1 and EVENTOUT; additional function ADC12_IN11."
      },
      {
        "number": "17",
        "name": "PA7",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_fa) with analog switch supplied by VDDA; alternate functions TIM1_CH1N, I2C3_SCL, SPI1_MOSI, QUADSPI_BK1_IO2 and EVENTOUT; additional function ADC12_IN12."
      },
      {
        "number": "18",
        "name": "PB0",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_a) with analog switch supplied by VDDA; alternate functions TRACED0, TIM1_CH2N, SPI1_NSS, USART3_CK, QUADSPI_BK1_IO1, COMP1_OUT and EVENTOUT; additional function ADC12_IN15."
      },
      {
        "number": "19",
        "name": "PB1",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_a) with analog switch supplied by VDDA; alternate functions TRACED1, TIM1_CH3N, USART3_RTS_DE, LPUART1_RTS_DE, QUADSPI_BK1_IO0, LPTIM2_IN1 and EVENTOUT; additional functions COMP1_INM and ADC12_IN16."
      },
      {
        "number": "20",
        "name": "PB2",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_a) with analog switch supplied by VDDA; alternate functions LPTIM1_OUT, I2C3_SMBA and EVENTOUT; additional functions COMP1_INP and RTC_OUT2."
      },
      {
        "number": "21",
        "name": "PB10",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_f); alternate functions TIM2_CH3, I2C2_SCL, SPI2_SCK, USART3_TX, LPUART1_RX, TSC_SYNC, QUADSPI_CLK, COMP1_OUT and EVENTOUT."
      },
      {
        "number": "22",
        "name": "PB11",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_f); alternate functions TIM2_CH4, I2C2_SDA, USART3_RX, LPUART1_TX, QUADSPI_BK1_NCS and EVENTOUT."
      },
      {
        "number": "23",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; all VSS pins must be connected to the external ground within the 50 mV variation limit."
      },
      {
        "number": "24",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply pin; standard operating voltage is 1.71 V to 3.6 V."
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TIM1_BKIN, I2C2_SMBA, SPI2_NSS, USART3_CK, LPUART1_RTS_DE, TSC_G1_IO1, TIM15_BKIN and EVENTOUT."
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_f); alternate functions TIM1_CH1N, I2C2_SCL, SPI2_SCK, USART3_CTS, LPUART1_CTS, TSC_G1_IO2, TIM15_CH1N and EVENTOUT."
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_f); alternate functions TIM1_CH2N, I2C2_SDA, SPI2_MISO, USART3_RTS_DE, TSC_G1_IO3, TIM15_CH1 and EVENTOUT."
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions RTC_REFIN, TIM1_CH3N, SPI2_MOSI, TSC_G1_IO4, TIM15_CH2 and EVENTOUT."
      },
      {
        "number": "29",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions MCO, TIM1_CH1, USART1_CK, LPTIM2_OUT and EVENTOUT."
      },
      {
        "number": "30",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_f); alternate functions TIM1_CH2, I2C1_SCL, USART1_TX, TIM15_BKIN and EVENTOUT."
      },
      {
        "number": "31",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_f); alternate functions TIM1_CH3, I2C1_SDA, USART1_RX, USB_CRS_SYNC and EVENTOUT."
      },
      {
        "number": "32",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with USB function supplied by VDDUSB (FT_u); alternate functions TIM1_CH4, TIM1_BKIN2, SPI1_MISO, COMP1_OUT, USART1_CTS, USB_DM, TIM1_BKIN2_COMP1 and EVENTOUT."
      },
      {
        "number": "33",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O with USB function supplied by VDDUSB (FT_u); alternate functions TIM1_ETR, SPI1_MOSI, USART1_RTS_DE, USB_DP and EVENTOUT."
      },
      {
        "number": "34",
        "name": "PA13 (JTMS/SWDIO)",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with JTMS/SWDIO as its function after reset; alternate functions IR_OUT, USB_NOE and EVENTOUT."
      },
      {
        "number": "35",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; all VSS pins must be connected to the external ground within the 50 mV variation limit."
      },
      {
        "number": "36",
        "name": "VDDUSB",
        "type": "power_in",
        "description": "USB supply pin; 3.0 V to 3.6 V when USB is used, and 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) with JTCK/SWCLK as its function after reset; alternate functions LPTIM1_OUT, I2C1_SMBA and EVENTOUT."
      },
      {
        "number": "38",
        "name": "PA15 (JTDI)",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with JTDI as its function after reset; alternate functions TIM2_CH1, TIM2_ETR, USART2_RX, SPI1_NSS, USART3_RTS_DE, TSC_G3_IO1 and EVENTOUT."
      },
      {
        "number": "39",
        "name": "PB3 (JTDO/TRACESWO)",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT_a) with analog switch supplied by VDDA; JTDO/TRACESWO as its function after reset; alternate functions TIM2_CH2, SPI1_SCK, USART1_RTS_DE and EVENTOUT."
      },
      {
        "number": "40",
        "name": "PB4 (NJTRST)",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_fa) with analog switch supplied by VDDA; NJTRST as its function after reset; alternate functions I2C3_SDA, SPI1_MISO, USART1_CTS, TSC_G2_IO1 and EVENTOUT."
      },
      {
        "number": "41",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT); alternate functions TRACED2, LPTIM1_IN1, I2C1_SMBA, SPI1_MOSI, USART1_CK, TSC_G2_IO2, TIM16_BKIN and EVENTOUT."
      },
      {
        "number": "42",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_fa) with analog switch supplied by VDDA; alternate functions TRACED3, LPTIM1_ETR, I2C1_SCL, USART1_TX, TSC_G2_IO3, TIM16_CH1N and EVENTOUT."
      },
      {
        "number": "43",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_fa) with analog switch supplied by VDDA; alternate functions TRACECK, LPTIM1_IN2, I2C1_SDA, USART1_RX, TSC_G2_IO4 and EVENTOUT; additional function PVD_IN."
      },
      {
        "number": "44",
        "name": "PH3-BOOT0 (BOOT0)",
        "type": "bidirectional",
        "description": "5 V-tolerant I/O (FT) with EVENTOUT alternate function; after reset it is the BOOT0 boot-mode configuration pin."
      },
      {
        "number": "45",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_f); alternate functions I2C1_SCL, TIM16_CH1 and EVENTOUT."
      },
      {
        "number": "46",
        "name": "PB9",
        "type": "bidirectional",
        "description": "5 V-tolerant Fm+-capable I/O (FT_f); alternate functions IR_OUT, I2C1_SDA, SPI2_NSS and EVENTOUT."
      },
      {
        "number": "47",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; all VSS pins must be connected to the external ground within the 50 mV variation limit."
      },
      {
        "number": "48",
        "name": "VDD",
        "type": "power_in",
        "description": "Main supply pin; standard operating voltage is 1.71 V to 3.6 V."
      }
    ],
    "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: The datasheet text extraction is jumbled. The LQFP48 pin numbers were taken from the LQFP48 column o; Some Table 14 rows (e.g. PA9, PA10, PB8) carry a stray leading '-' from the Notes column in the extr; NRST is typed as bidirectional because the datasheet classes it as I/O with RST structure. Some KiCa"
        ],
        "pages_sent": 74,
        "cost_usd": 0.3115,
        "at": "2026-10-10T22:28:29"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588886204322623488",
        "pages": 193,
        "sha256": "5104ae3be2936485",
        "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": "stm32l412cbt6.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": "stm32l412cbt6-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": "8ee1bb365ed455259fce2d225bb4dfa169a045354f6e009ac8f0bbb2144ba539",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}