STC32G12K128-35I-LQFP32

{
  "slug": "stc32g12k128-35i-lqfp32",
  "version": "0.1.0",
  "type": "component",
  "description": "STC Micro Microcontrollers (MCU/MPU/SOC), LQFP-32(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stc32g12k128-35i-lqfp32",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "stc32g12k128-35i-lqfp32.kicad_sym",
    "stc32g12k128-35i-lqfp32.kicad_mod",
    "stc32g12k128-35i-lqfp32.glb",
    "stc32g12k128-35i-lqfp32.step",
    "stc32g12k128-35i-lqfp32.lbr",
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    "docs/stc32g12k128-35i-lqfp32-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "stc32g12k128-35i-lqfp32-hero.glb",
    "stc32g12k128-35i-lqfp32-hero.overlay.json",
    "stc32g12k128-35i-lqfp32-etched.glb"
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  "component": {
    "mpn": "STC32G12K128-35I-LQFP32",
    "manufacturer": "STC Micro",
    "package": "LQFP-32(7x7)",
    "pin_count": 32,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756362504647913472",
    "parts": {
      "symbol": "stc32g12k128-35i-lqfp32.kicad_sym",
      "footprint": "stc32g12k128-35i-lqfp32.kicad_mod",
      "model_3d": "stc32g12k128-35i-lqfp32-hero.glb",
      "model_3d_plain": "stc32g12k128-35i-lqfp32-etched.glb",
      "model_3d_step": "stc32g12k128-35i-lqfp32-etched.step",
      "model_3d_step_plain": "stc32g12k128-35i-lqfp32.step",
      "lbr": "stc32g12k128-35i-lqfp32.lbr"
    },
    "distributor_links": {
      "lcsc": "C5210759"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T19:36:41Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "P1.0",
        "type": "bidirectional",
        "description": "Standard bidirectional I/O port pin that also serves as ADC analog input channel 0, PWM1 positive capture input/pulse output, and UART2 receive (RxD2)."
      },
      {
        "number": "2",
        "name": "P1.1",
        "type": "bidirectional",
        "description": "Standard bidirectional I/O port pin that also serves as ADC analog input channel 1, PWM1 negative pulse output, and UART2 transmit (TxD2)."
      },
      {
        "number": "3",
        "name": "P1.4",
        "type": "bidirectional",
        "description": "Standard bidirectional I/O port pin that also serves as ADC analog input channel 4, PWM3 positive capture/pulse output, SPI MISO, USART1/USART2 SPI MISO, and I2C SDA."
      },
      {
        "number": "4",
        "name": "P1.5",
        "type": "bidirectional",
        "description": "Standard bidirectional I/O port pin that also serves as ADC analog input channel 5, PWM3 negative pulse output, SPI SCLK, USART1/USART2 SPI clock, and I2C SCL."
      },
      {
        "number": "5",
        "name": "P1.6",
        "type": "bidirectional",
        "description": "Standard bidirectional I/O port pin that also serves as ADC analog input channel 6, UART1 receive (RxD_3), PWM4 positive capture/pulse output, master clock output (MCLKO_2), and external crystal output (XTALO)."
      },
      {
        "number": "6",
        "name": "P1.7",
        "type": "bidirectional",
        "description": "Standard bidirectional I/O port pin that also serves as ADC analog input channel 7, UART1 transmit (TxD_3), PWM4 negative pulse output, PWM5 capture/pulse output, and external crystal/clock input (XTALI)."
      },
      {
        "number": "7",
        "name": "P1.3",
        "type": "bidirectional",
        "description": "Standard bidirectional I/O port pin that also serves as ADC analog input channel 3, SPI MOSI, USART1/USART2 SPI MOSI, PWM2 negative pulse output, and Timer 2 clock divider output (T2CLKO)."
      },
      {
        "number": "8",
        "name": "UCap",
        "type": "passive",
        "description": "USB core power regulator stabilization pin."
      },
      {
        "number": "9",
        "name": "P5.4",
        "type": "bidirectional",
        "description": "Standard I/O port pin; factory default is I/O, and it can be set as the active-low reset input nRST (reset level low) through ISP programming, which takes effect after a power cycle; it also serves as MCLKO, SPI/USART SS, Timer 2 input (T2), ADC analog input channel 2, and PWM2/PWM6 output."
      },
      {
        "number": "10",
        "name": "Vcc/AVcc",
        "type": "power_in",
        "description": "Main supply pin (Vcc) and ADC supply pin (AVcc); operating voltage is 1.9 V to 5.5 V, and must not be below 3.0 V when operating below -40 °C."
      },
      {
        "number": "11",
        "name": "ADC_VRef+",
        "type": "input",
        "description": "ADC external reference voltage pin, which must be connected to an external reference supply of 2.4 V to MCU-VCC, since floating it causes leakage current."
      },
      {
        "number": "12",
        "name": "Gnd/AGnd",
        "type": "power_in",
        "description": "Ground pin for the digital circuit (Gnd) and ADC ground (AGnd)."
      },
      {
        "number": "13",
        "name": "P3.0",
        "type": "bidirectional",
        "description": "Standard I/O port pin that is quasi-bidirectional (weak pull-up) after power-up and also serves as USB D- data, UART1 receive (RxD), and external interrupt INT4; it is used for ISP download/emulation, so it should not be loaded with other circuits."
      },
      {
        "number": "14",
        "name": "P3.1",
        "type": "bidirectional",
        "description": "Standard I/O port pin that is quasi-bidirectional (weak pull-up) after power-up and also serves as USB D+ data and UART1 transmit (TxD); it is used for ISP download/emulation, so it should not be loaded with other circuits."
      },
      {
        "number": "15",
        "name": "P3.2",
        "type": "bidirectional",
        "description": "Standard I/O port pin that also serves as external interrupt INT0, SPI SCLK/I2C SCL on alternate pins, and PWM external trigger inputs (PWMETI/PWMETI2); it is driven high at power-up and is sampled as the USB download select when pulled low."
      },
      {
        "number": "16",
        "name": "P3.3",
        "type": "bidirectional",
        "description": "Standard I/O port pin that also serves as external interrupt INT1, SPI MISO_4, I2C SDA_4, PWM4 negative pulse output (PWM4N_4), and PWM7 capture/pulse output (PWM7_2)."
      },
      {
        "number": "17",
        "name": "P3.4",
        "type": "bidirectional",
        "description": "Standard I/O port pin that also serves as Timer 0 external clock input (T0), Timer 1 clock divider output (T1CLKO), SPI MOSI_4, PWM4/PWM8 outputs, and comparator output (CMPO)."
      },
      {
        "number": "18",
        "name": "P3.5",
        "type": "bidirectional",
        "description": "Standard I/O port pin that also serves as Timer 1 external clock input (T1), Timer 0 clock divider output (T0CLKO), SPI SS_4, and enhanced PWM external fault detection input (PWMFLT/PWMFLT2)."
      },
      {
        "number": "19",
        "name": "P3.6",
        "type": "bidirectional",
        "description": "Standard I/O port pin that also serves as external interrupt INT2, UART1 receive (RxD_2), and comparator negative input (CMP-)."
      },
      {
        "number": "20",
        "name": "P3.7",
        "type": "bidirectional",
        "description": "Standard I/O port pin that also serves as external interrupt INT3, UART2/UART TxD_2 transmit, and comparator positive input (CMP+)."
      },
      {
        "number": "21",
        "name": "P2.0",
        "type": "bidirectional",
        "description": "Standard I/O port pin that also serves as address bus output A8 (external bus), PWM1 positive capture/pulse output (PWM1P_2), and PWM5 output."
      },
      {
        "number": "22",
        "name": "P2.1",
        "type": "bidirectional",
        "description": "Standard I/O port pin that also serves as address bus output A9 (external bus), PWM1 negative pulse output (PWM1N_2), and PWM6 output."
      },
      {
        "number": "23",
        "name": "P2.2",
        "type": "bidirectional",
        "description": "Standard I/O port pin that also serves as address bus output A10 (external bus), PWM2 positive capture/pulse output (PWM2P_2), PWM7 output, and SPI SS (SS_2, S1SS_2, S2SS_2)."
      },
      {
        "number": "24",
        "name": "P2.3",
        "type": "bidirectional",
        "description": "Standard I/O port pin that also serves as address bus output A11 (external bus), PWM2 negative pulse output (PWM2N_2), PWM8 output, and SPI MOSI (MOSI_2, S1MOSI_2, S2MOSI_2)."
      },
      {
        "number": "25",
        "name": "P2.4",
        "type": "bidirectional",
        "description": "Standard I/O port pin that also serves as address bus output A12 (external bus), PWM3 positive capture/pulse output (PWM3P_2), I2C SDA_2, and SPI MISO (MISO_2, S1MISO_2, S2MISO_2)."
      },
      {
        "number": "26",
        "name": "P2.5",
        "type": "bidirectional",
        "description": "Standard I/O port pin that also serves as address bus output A13 (external bus), PWM3 negative pulse output (PWM3N_2), I2C SCL_2, and SPI SCLK (SCLK_2, S1SCLK_2, S2SCLK_2)."
      },
      {
        "number": "27",
        "name": "P2.6",
        "type": "bidirectional",
        "description": "Standard I/O port pin that also serves as address bus output A14 (external bus) and PWM4 positive capture/pulse output (PWM4P_2)."
      },
      {
        "number": "28",
        "name": "P2.7",
        "type": "bidirectional",
        "description": "Standard I/O port pin that also serves as address bus output A15 (external bus) and PWM4 negative pulse output (PWM4N_2)."
      },
      {
        "number": "29",
        "name": "P0.0",
        "type": "bidirectional",
        "description": "Standard I/O port pin that also serves as address/data bus AD0, ADC analog input channel 8, UART3 receive (RxD3), PWM5 capture/pulse output, Timer 3 external clock input (T3_2), and CAN receive (CAN_RX)."
      },
      {
        "number": "30",
        "name": "P0.1",
        "type": "bidirectional",
        "description": "Standard I/O port pin that also serves as address/data bus AD1, ADC analog input channel 9, UART3 transmit (TxD3), PWM6 capture/pulse output, Timer 3 clock divider output (T3CLKO_2), and CAN transmit (CAN_TX)."
      },
      {
        "number": "31",
        "name": "P0.2",
        "type": "bidirectional",
        "description": "Standard I/O port pin that also serves as address/data bus AD2, ADC analog input channel 10, UART4 receive (RxD4), PWM7 capture/pulse output, Timer 4 external clock input (T4_2), CAN2 receive, and LIN receive (LIN_RX)."
      },
      {
        "number": "32",
        "name": "P0.3",
        "type": "bidirectional",
        "description": "Standard I/O port pin that also serves as address/data bus AD3, ADC analog input channel 11, UART4 transmit (TxD4), PWM8 capture/pulse output, Timer 4 clock divider output (T4CLKO_2), CAN2 transmit, and LIN transmit (LIN_TX)."
      }
    ],
    "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: Package size mismatch: the MPN hint says LQFP-32(7x7), but the datasheet lists LQFP32 as 9mm x 9mm (; Pins 20-32 descriptions are derived from the pin-function names printed on the LQFP32 pin diagram (P; Pin types are KiCad classes chosen from the datasheet: all general-purpose port pins are bidirection",
          "1/32 pins cited to the wrong page (name found elsewhere): ['11:ADC_VRef+@p278']"
        ],
        "pages_sent": 108,
        "cost_usd": 1.0923,
        "at": "2026-10-18T19:34:45"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756362504647913472",
        "pages": 1887,
        "sha256": "59bba1d366cc8d33",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 32,
        "described": 32,
        "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": "be0e412f1c66fee70039b0e109e0cc7c823161dda97593718afa97569bc61ce3",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stc32g12k128-35i-lqfp32-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "70e34fc9ba789a5bbc74acc2cd8cbbe03d3ea017bb501487fdbac4d8f798551d",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}