STC32G12K128-35I-QFN48

{
  "schema_version": 1,
  "type": "component",
  "slug": "stc32g12k128-35i-qfn48",
  "title": "STC32G12K128-35I-QFN48",
  "brief": "STC Micro Microcontrollers (MCU/MPU/SOC), QFN-48(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stc32g12k128-35i-qfn48",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "STC32G12K128-35I-QFN48",
    "manufacturer": "STC Micro",
    "package": "QFN-48(6x6)",
    "pin_count": 49,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756362802066280448",
    "parts": {
      "symbol": "stc32g12k128-35i-qfn48.kicad_sym",
      "footprint": "stc32g12k128-35i-qfn48.kicad_mod",
      "model_3d": "stc32g12k128-35i-qfn48-hero.glb",
      "model_3d_plain": "stc32g12k128-35i-qfn48-etched.glb",
      "model_3d_step": "stc32g12k128-35i-qfn48-etched.step",
      "model_3d_step_plain": "stc32g12k128-35i-qfn48.step",
      "lbr": "stc32g12k128-35i-qfn48.lbr"
    },
    "distributor_links": {
      "lcsc": "C20613513"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T05:27:07Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "P5.3",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also serial 4 TxD4_2, CAN2_TX_2 and LIN_TX_2 outputs; port is high-impedance input after power-on until its mode is set."
      },
      {
        "number": "2",
        "name": "P0.5",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also address/data bus AD5, ADC channel 13 input, and Timer 3 clock-divided output T3CLKO; high-impedance input after power-on until mode is set."
      },
      {
        "number": "3",
        "name": "P0.6",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also address/data bus AD6, ADC channel 14 input, Timer 4 external clock input T4 and enhanced PWM fault input PWMFLT2_2."
      },
      {
        "number": "4",
        "name": "P0.7",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also address/data bus AD7 and Timer 4 clock-divided output T4CLKO; high-impedance input after power-on until mode is set."
      },
      {
        "number": "5",
        "name": "P1.0",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also ADC channel 0 input, PWM1 capture/pulse positive output PWM1P and serial 2 receive RxD2."
      },
      {
        "number": "6",
        "name": "P1.1",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also ADC channel 1 input, PWM1 pulse negative output PWM1N and serial 2 transmit TxD2."
      },
      {
        "number": "7",
        "name": "P4.7",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also serial 2 TxD2_2, CAN2_TX_3 and LIN_TX_3 outputs."
      },
      {
        "number": "8",
        "name": "P1.4",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also ADC channel 4 input, PWM3 positive output PWM3P, SPI MISO/USART1-SPI/USART2-SPI data input and I2C data line SDA."
      },
      {
        "number": "9",
        "name": "P1.5",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also ADC channel 5 input, PWM3 negative output PWM3N, SPI clock SCLK (plus USART1/USART2 SPI clocks) and I2C clock line SCL."
      },
      {
        "number": "10",
        "name": "P1.6",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also ADC channel 6 input, serial 1 receive RxD_3, PWM4 positive output PWM4P, master clock output MCLKO_2 and external crystal output XTALO."
      },
      {
        "number": "11",
        "name": "P1.7",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also ADC channel 7 input, serial 1 transmit TxD_3, PWM4 negative output PWM4N, PWM5 I/O and external crystal/clock input XTALI."
      },
      {
        "number": "12",
        "name": "P1.3",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also ADC channel 3 input, SPI MOSI (plus USART1/USART2 SPI MOSI), PWM2 negative output PWM2N and Timer 2 clock-divided output T2CLKO."
      },
      {
        "number": "13",
        "name": "UCAP",
        "type": "passive",
        "description": "USB core power regulator stabilization pin, connected to an external capacitor (figure shows 0.1 uF to 10 uF)."
      },
      {
        "number": "14",
        "name": "P5.4",
        "type": "bidirectional",
        "description": "Standard I/O port pin that can be configured as the active-low reset input nRST (factory default is I/O; reset function requires ISP setting and power cycle), also MCLKO, ADC channel 2, PWM2P, PWM6_2, Timer 2 input T2 and SPI slave select lines."
      },
      {
        "number": "15",
        "name": "Vcc",
        "type": "power_in",
        "description": "MCU supply pin (Vcc/AVcc); operating voltage 1.9 V to 5.5 V per the datasheet feature list."
      },
      {
        "number": "16",
        "name": "ADC_VRef+",
        "type": "input",
        "description": "ADC external reference voltage pin, which must be connected to an external reference between 2.4 V and MCU-VCC, since floating it causes leakage current."
      },
      {
        "number": "17",
        "name": "Gnd",
        "type": "power_in",
        "description": "Ground pin (Gnd/AGnd), common ground for the digital core and ADC."
      },
      {
        "number": "18",
        "name": "P4.0",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also SPI MOSI_3 and USART1/USART2 SPI MOSI_3 outputs (S1MOSI_3, S2MOSI_3)."
      },
      {
        "number": "19",
        "name": "P3.0",
        "type": "bidirectional",
        "description": "Standard I/O port pin with weak pull-up/quasi-bidirectional mode after power-on, also serial 1 receive RxD, USB data line D- and external interrupt INT4; used for USB/serial ISP download."
      },
      {
        "number": "20",
        "name": "P3.1",
        "type": "bidirectional",
        "description": "Standard I/O port pin with weak pull-up/quasi-bidirectional mode after power-on, also serial 1 transmit TxD and USB data line D+; used for USB/serial ISP download and simulation."
      },
      {
        "number": "21",
        "name": "P3.2",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also external interrupt INT0, SPI/I2C pins SCLK_4/SCL_4 and PWM external trigger inputs PWMETI/PWMETI2; held high at power-on and used as the USB-download select pin when low."
      },
      {
        "number": "22",
        "name": "P3.3",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also external interrupt INT1, SPI MISO_4, I2C data SDA_4, PWM4 negative output PWM4N_4 and PWM7 I/O PWM7_2."
      },
      {
        "number": "23",
        "name": "P3.4",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also Timer 0 external clock input T0, Timer 1 clock-divided output T1CLKO, SPI MOSI_4, PWM4 positive output PWM4P_4, PWM8_2 and comparator output CMPO."
      },
      {
        "number": "24",
        "name": "P5.0",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also serial 3 receive RxD3_2, comparator positive input CMP+_2 and CAN receive CAN_RX_2."
      },
      {
        "number": "25",
        "name": "P5.1",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also serial 3 transmit TxD3_2, comparator positive input CMP+_3 and CAN transmit CAN_TX_2."
      },
      {
        "number": "26",
        "name": "P3.5",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also Timer 1 external clock input T1, Timer 0 clock-divided output T0CLKO, SPI slave select SS_4 and enhanced PWM fault input PWMFLT."
      },
      {
        "number": "27",
        "name": "P3.6",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also external interrupt INT2, serial 1 receive RxD_2 and comparator negative input CMP-."
      },
      {
        "number": "28",
        "name": "P3.7",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also external interrupt INT3, serial 1 transmit TxD_2 and comparator positive input CMP+."
      },
      {
        "number": "29",
        "name": "P4.1",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also SPI MISO_3 (plus USART1/USART2 SPI MISO_3 data), comparator output CMPO_2 and PWM external trigger input PWMETI_2."
      },
      {
        "number": "30",
        "name": "P4.2",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also external bus write strobe WR and CAN receive CAN_RX_3."
      },
      {
        "number": "31",
        "name": "P4.3",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also serial 4 receive RxD_4 and SPI clock SCLK_3 (plus USART1/USART2 SPI clocks S1SCLK_3, S2SCLK_3)."
      },
      {
        "number": "32",
        "name": "P4.4",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also external bus read strobe RD and serial 4 transmit TxD_4."
      },
      {
        "number": "33",
        "name": "P2.0",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also address bus A8, PWM1 positive output PWM1P_2 and PWM5 I/O."
      },
      {
        "number": "34",
        "name": "P2.1",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also address bus A9, PWM1 negative output PWM1N_2 and PWM6 I/O."
      },
      {
        "number": "35",
        "name": "P2.2",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also address bus A10, PWM2 positive output PWM2P_2, PWM7 I/O and SPI slave select SS_2."
      },
      {
        "number": "36",
        "name": "P2.3",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also address bus A11, PWM2 negative output PWM2N_2, PWM8 I/O and SPI MOSI_2."
      },
      {
        "number": "37",
        "name": "P2.4",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also address bus A12, PWM3 positive output PWM3P_2, I2C data SDA_2 and SPI MISO_2."
      },
      {
        "number": "38",
        "name": "P2.5",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also address bus A13, PWM3 negative output PWM3N_2, I2C clock SCL_2 and SPI clock SCLK_2."
      },
      {
        "number": "39",
        "name": "P2.6",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also address bus A14 and PWM4 positive output PWM4P_2."
      },
      {
        "number": "40",
        "name": "P2.7",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also address bus A15 and PWM4 negative output PWM4N_2."
      },
      {
        "number": "41",
        "name": "P4.5",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also ALE address latch enable output and CAN transmit CAN_TX_3."
      },
      {
        "number": "42",
        "name": "P4.6",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also LIN receive LIN_RX_3, CAN2 receive CAN2_RX_3 and serial 2 receive RxD2_2."
      },
      {
        "number": "43",
        "name": "P0.0",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also address/data bus AD0, ADC channel 8 input, serial 3 receive RxD3, PWM5 I/O PWM5_3, Timer 3 external clock T3_2 and CAN receive CAN_RX."
      },
      {
        "number": "44",
        "name": "P0.1",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also address/data bus AD1, ADC channel 9 input, serial 3 transmit TxD3, PWM6 I/O PWM6_3, Timer 3 clock output T3CLKO_2 and CAN transmit CAN_TX."
      },
      {
        "number": "45",
        "name": "P0.2",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also address/data bus AD2, ADC channel 10 input, serial 4 receive RxD4, PWM7 I/O PWM7_3, Timer 4 external clock T4_2, CAN2 receive CAN2_RX and LIN receive LIN_RX."
      },
      {
        "number": "46",
        "name": "P0.3",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also address/data bus AD3, ADC channel 11 input, serial 4 transmit TxD4, PWM8 I/O PWM8_3, Timer 4 clock output T4CLKO_2, CAN2 transmit CAN2_TX and LIN transmit LIN_TX."
      },
      {
        "number": "47",
        "name": "P0.4",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also address/data bus AD4, ADC channel 12 input and Timer 3 external clock input T3."
      },
      {
        "number": "48",
        "name": "P5.2",
        "type": "bidirectional",
        "description": "Standard I/O port pin, also serial 4 receive RxD4_2, CAN2 receive CAN2_RX_2 and LIN receive LIN_RX_2."
      },
      {
        "number": "49",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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: Pinout taken from the QFN48 column of the LQFP48/QFN48 pin map (section 4.1.4, page 261) of the STC3; Pin 13 is labelled UCAP in the pin map and the pin table lists its type as 'I'. I classified it as p; Pin 16 ADC_VRef+ is typed as input per the pin table, but the datasheet notes it must be driven by a",
          "exposed pad 49 added from the footprint"
        ],
        "pages_sent": 108,
        "cost_usd": 1.0918,
        "at": "2026-10-19T05:26:18"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756362802066280448",
        "pages": 1887,
        "sha256": "59bba1d366cc8d33",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 49,
        "described": 49,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "stc32g12k128-35i-qfn48.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.02,
          6.02,
          0.9
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "7668dcc1fe3ff02ee57cebacf637e8c84ece29b1faac9866d85d1327b8ed6ad9",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stc32g12k128-35i-qfn48-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.02,
          6.02,
          0.9
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "61745f19052fcab7eaed4dc7ea41bca9db152420a2ee746fee7cdc6b53daea47",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STC Micro",
      "Package": "QFN-48(6x6)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "49"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "59bba1d366cc8d33c15d659c37a769d3d5458b5a2e474aec60e65aabc3257f00",
      "rows": [
        {
          "name": "VIH1 input high level (general I/O), Schmitt trigger on",
          "symbol": "VIH1",
          "kind": "electrical",
          "unit": "V",
          "min": 1.6,
          "typ": null,
          "max": null,
          "conditions": "VSS=0V, VDD=5.0V, 25℃; 打开施密特触发",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "VIH1 input high level (general I/O), Schmitt trigger off",
          "symbol": "VIH1",
          "kind": "electrical",
          "unit": "V",
          "min": 1.54,
          "typ": null,
          "max": null,
          "conditions": "VSS=0V, VDD=5.0V, 25℃; 关闭施密特触发",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "VIL1 input low level, Schmitt trigger on",
          "symbol": "VIL1",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.32,
          "conditions": "VSS=0V, VDD=5.0V, 25℃; 打开施密特触发",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "VIL1 input low level, Schmitt trigger off",
          "symbol": "VIL1",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.48,
          "conditions": "VSS=0V, VDD=5.0V, 25℃; 关闭施密特触发",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "Logic 0 input current",
          "symbol": "IIL",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "VSS=0V, VDD=5.0V, 25℃; 端口电压 0V",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "Logic 1 to 0 transition current",
          "symbol": "ITL",
          "kind": "electrical",
          "unit": "uA",
          "min": 100,
          "typ": 270,
          "max": 600,
          "conditions": "VSS=0V, VDD=5.0V, 25℃; 端口电压 2.0V",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "I/O pull-up resistance",
          "symbol": "RPU",
          "kind": "electrical",
          "unit": "KΩ",
          "min": 4.1,
          "typ": 4.2,
          "max": 4.4,
          "conditions": "VSS=0V, VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "Internal IRC temperature drift, -20℃~65℃",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.88,
          "typ": null,
          "max": 1.05,
          "conditions": "参考温度 25℃, 温度范围 -20℃~65℃",
          "source_page": 1656,
          "source": "datasheet"
        },
        {
          "name": "Internal IRC temperature drift, -40℃~85℃",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -1.38,
          "typ": null,
          "max": 1.42,
          "conditions": "参考温度 25℃, 温度范围 -40℃~85℃",
          "source_page": 1656,
          "source": "datasheet"
        },
        {
          "name": "Internal IRC temperature drift, -40℃~125℃",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "参考温度 25℃, 温度范围 -40℃~125℃",
          "source_page": 1656,
          "source": "datasheet"
        },
        {
          "name": "Operating voltage",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.9,
          "typ": null,
          "max": 5.5,
          "conditions": "当工作温度低于-40℃时，工作电压不得低于 3.0V",
          "source_page": 1656,
          "source": "datasheet"
        },
        {
          "name": "VDD to ground voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 1656,
          "source": "datasheet"
        },
        {
          "name": "I/O to ground voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 1656,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 155,
          "conditions": "",
          "source_page": 1656,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature (internal high-speed IRC and external crystal)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "使用内部高速 IRC 和外部晶振",
          "source_page": 1656,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature (second listed range)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 1656,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "stc32g12k128-35i-qfn48"
  ],
  "discovery_pitch": "STC32G12K128-35I-QFN48 (STC Micro) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "stc32g12k128-35i-qfn48.kicad_sym",
    "stc32g12k128-35i-qfn48.kicad_mod",
    "stc32g12k128-35i-qfn48.glb",
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    "docs/stc32g12k128-35i-qfn48-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "stc32g12k128-35i-qfn48-hero.glb",
    "stc32g12k128-35i-qfn48-hero.overlay.json",
    "stc32g12k128-35i-qfn48-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}