STC32G8K64-42I-TSSOP20

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  "type": "component",
  "slug": "stc32g8k64-42i-tssop20",
  "title": "STC32G8K64-42I-TSSOP20",
  "brief": "STC Micro Microcontroller Units (MCUs/MPUs/SOCs), TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "single chip microcomputer-microcontroller",
    "stc32g8k64-42i-tssop20",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "STC32G8K64-42I-TSSOP20",
    "manufacturer": "STC Micro",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Single Chip Microcomputer/Microcontroller",
    "subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/8fe4cdefdfe8ba1a5b5a614521aecf58.pdf",
    "parts": {
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      "model_3d": "stc32g8k64-42i-tssop20-hero.glb",
      "model_3d_plain": "stc32g8k64-42i-tssop20-etched.glb",
      "model_3d_step": "stc32g8k64-42i-tssop20-etched.step",
      "model_3d_step_plain": "stc32g8k64-42i-tssop20.step",
      "lbr": "stc32g8k64-42i-tssop20.lbr"
    },
    "distributor_links": {
      "lcsc": "C20611528"
    },
    "distributor_check": {
      "checked_at": "2026-10-26T23:41:52Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "P1.4",
        "type": "bidirectional",
        "description": "Standard I/O port pin with alternate functions ADC4, PWM3P, MISO, S1MISO, S2MISO and SDA (I2C data)."
      },
      {
        "number": "2",
        "name": "P1.5",
        "type": "bidirectional",
        "description": "Standard I/O port pin with alternate functions ADC5, PWM3N, SCLK, S1SCLK, S2SCLK, SCL and I2SCK_2."
      },
      {
        "number": "3",
        "name": "P1.6",
        "type": "bidirectional",
        "description": "Standard I/O port pin with alternate functions ADC6, RxD_3, PWM4P, MCLKO_2, XTALO (external crystal output) and I2SMCK_2/I2SMCK_4."
      },
      {
        "number": "4",
        "name": "P1.7",
        "type": "bidirectional",
        "description": "Standard I/O port pin with alternate functions ADC7, TxD_3, PWM4N, PWM5_2 and XTALI (external crystal or clock input)."
      },
      {
        "number": "5",
        "name": "P1.3",
        "type": "bidirectional",
        "description": "Standard I/O port pin with alternate functions ADC3, MOSI, S1MOSI, S2MOSI, PWM2N, T2CLKO and I2SData_2."
      },
      {
        "number": "6",
        "name": "P1.2",
        "type": "bidirectional",
        "description": "Standard I/O port pin with alternate functions PWM2P, SS, S1SS, S2SS and T2 (timer 2 external clock input)."
      },
      {
        "number": "7",
        "name": "P5.4",
        "type": "bidirectional",
        "description": "Standard I/O port pin that can be configured as the active-low reset input nRST, with alternate functions ADC2, MCLKO, SS and PWM6_2."
      },
      {
        "number": "8",
        "name": "Vcc",
        "type": "power_in",
        "description": "Power supply pin for the MCU core and I/O, which also feeds AVcc for the ADC."
      },
      {
        "number": "9",
        "name": "ADC_VRef+",
        "type": "input",
        "description": "ADC external reference voltage pin that must be connected to an external reference of 2.4V to MCU-VCC, since floating it causes leakage current."
      },
      {
        "number": "10",
        "name": "Gnd",
        "type": "power_in",
        "description": "Ground pin, which is also the ADC analog ground AGnd."
      },
      {
        "number": "11",
        "name": "P3.0",
        "type": "bidirectional",
        "description": "Standard I/O port pin with alternate functions UART1 receive RxD and external interrupt INT4, and it is weakly pulled up after power-on."
      },
      {
        "number": "12",
        "name": "P3.1",
        "type": "bidirectional",
        "description": "Standard I/O port pin with alternate function UART1 transmit TxD, and it is weakly pulled up after power-on."
      },
      {
        "number": "13",
        "name": "P3.2",
        "type": "bidirectional",
        "description": "Standard I/O port pin with alternate functions external interrupt INT0, SCLK_4, SCL_4, PWMETI, PWMETI2 and I2SCK; it is high level during power-on reset."
      },
      {
        "number": "14",
        "name": "P3.3",
        "type": "bidirectional",
        "description": "Standard I/O port pin with alternate functions external interrupt INT1, MISO_4, SDA_4, PWM4N_4 and PWM7_2."
      },
      {
        "number": "15",
        "name": "P3.4",
        "type": "bidirectional",
        "description": "Standard I/O port pin with alternate functions T0 external clock input, T1CLKO, MOSI_4, PWM4P_4, PWM8_2, comparator output CMPO and I2SData."
      },
      {
        "number": "16",
        "name": "P3.5",
        "type": "bidirectional",
        "description": "Standard I/O port pin with alternate functions T1 external clock input, T0CLKO, SS_4, PWM fault input PWMFLT and I2SLRCK."
      },
      {
        "number": "17",
        "name": "P3.6",
        "type": "bidirectional",
        "description": "Standard I/O port pin with alternate functions external interrupt INT2, UART1 receive RxD_2 and comparator negative input CMP-."
      },
      {
        "number": "18",
        "name": "P3.7",
        "type": "bidirectional",
        "description": "Standard I/O port pin with alternate functions external interrupt INT3, TxD_2 and comparator positive input CMP+."
      },
      {
        "number": "19",
        "name": "P1.1",
        "type": "bidirectional",
        "description": "Standard I/O port pin with alternate functions ADC1, PWM1N and UART2 transmit TxD2."
      },
      {
        "number": "20",
        "name": "P1.0",
        "type": "bidirectional",
        "description": "Standard I/O port pin with alternate functions ADC0, PWM1P and UART2 receive RxD2."
      }
    ],
    "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 pin-description row for P3.7 (pin 18) falls on datasheet page 280, which is not in the supplied ; The STC32G8K64 pin table (page 274 diagram, pages 276-279 table) lists TSSOP20 pin numbers 1-20 and ",
          "1/20 pins cited to the wrong page (name found elsewhere): ['6:P1.2@p277']"
        ],
        "pages_sent": 108,
        "cost_usd": 0.2304,
        "at": "2026-10-26T23:41:24"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/8fe4cdefdfe8ba1a5b5a614521aecf58.pdf",
        "pages": 1887,
        "sha256": "59bba1d366cc8d33",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "STC Micro",
      "Package": "TSSOP-20",
      "Category": "Single Chip Microcomputer/Microcontroller",
      "Pins": "20"
    },
    "characteristics": {
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          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": 1.9,
          "typ": null,
          "max": 5.5,
          "conditions": "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": "VDD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5.5,
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          "source_page": 1656,
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        },
        {
          "name": "I/O port voltage to ground",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "max printed as VDD+0.3",
          "source_page": 1656,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "使用内部高速 IRC 和外部晶振",
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          "name": "Operating temperature",
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        {
          "name": "Storage temperature",
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          "unit": "℃",
          "min": -55,
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        },
        {
          "name": "Internal IRC frequency drift",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.88,
          "typ": null,
          "max": 1.05,
          "conditions": "-20℃~65℃, reference temperature 25℃",
          "source_page": 1656,
          "source": "datasheet"
        },
        {
          "name": "Internal IRC frequency drift",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -1.38,
          "typ": null,
          "max": 1.42,
          "conditions": "-40℃~85℃, reference temperature 25℃",
          "source_page": 1656,
          "source": "datasheet"
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          "name": "Internal IRC frequency drift",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "-40℃~125℃, reference temperature 25℃",
          "source_page": 1656,
          "source": "datasheet"
        },
        {
          "name": "POR threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.9,
          "max": null,
          "conditions": "测试温度 25℃",
          "source_page": 1656,
          "source": "datasheet"
        },
        {
          "name": "LVR0 threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "测试温度 25℃",
          "source_page": 1656,
          "source": "datasheet"
        },
        {
          "name": "LVR1 threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 2.4,
          "max": null,
          "conditions": "测试温度 25℃",
          "source_page": 1656,
          "source": "datasheet"
        },
        {
          "name": "LVR2 threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 2.7,
          "max": null,
          "conditions": "测试温度 25℃",
          "source_page": 1656,
          "source": "datasheet"
        },
        {
          "name": "LVR3 threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 3,
          "max": null,
          "conditions": "测试温度 25℃",
          "source_page": 1656,
          "source": "datasheet"
        },
        {
          "name": "Input low voltage",
          "symbol": "VIL1",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.32,
          "conditions": "打开施密特触发, VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
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        {
          "name": "Input low voltage",
          "symbol": "VIL1",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.48,
          "conditions": "关闭施密特触发, VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "Input high voltage (normal I/O)",
          "symbol": "VIH1",
          "kind": "electrical",
          "unit": "V",
          "min": 1.6,
          "typ": null,
          "max": null,
          "conditions": "打开施密特触发, VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
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        {
          "name": "Input high voltage (normal I/O)",
          "symbol": "VIH1",
          "kind": "electrical",
          "unit": "V",
          "min": 1.54,
          "typ": null,
          "max": null,
          "conditions": "关闭施密特触发, VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "Output low sink current",
          "symbol": "IOL1",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "端口电压 0.45V, VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "Output high current (bidirectional mode)",
          "symbol": "IOH1",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 200,
          "max": null,
          "conditions": "VDD=5.0V, 25℃",
          "source_page": 1657,
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        {
          "name": "Output high current (push-pull mode)",
          "symbol": "IOH2",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "端口电压 2.4V, VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
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        {
          "name": "Logic 0 input current",
          "symbol": "IIL",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "端口电压 0V, VDD=5.0V, 25℃",
          "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": "端口电压 2.0V, VDD=5.0V, 25℃",
          "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": "VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
        },
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          "name": "Normal operating mode current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": 4,
          "typ": null,
          "max": 20,
          "conditions": "VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "Power-down mode current",
          "symbol": "IPD",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "Power-down wake-up timer current",
          "symbol": "IWKT",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 4.1,
          "max": null,
          "conditions": "VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "Low-voltage detect module current",
          "symbol": "ILVD",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 425,
          "max": null,
          "conditions": "VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "Idle mode current (6MHz)",
          "symbol": "IIDL",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.55,
          "max": null,
          "conditions": "VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "Idle mode current (11.0592MHz)",
          "symbol": "IIDL",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2.34,
          "max": null,
          "conditions": "VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "Idle mode current (24MHz)",
          "symbol": "IIDL",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 3.93,
          "max": null,
          "conditions": "VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "Idle mode current (internal 32KHz)",
          "symbol": "IIDL",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.57,
          "max": null,
          "conditions": "VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "Normal mode current (6MHz)",
          "symbol": "INOR",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2.2,
          "max": null,
          "conditions": "VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
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        {
          "name": "Normal mode current (11.0592MHz)",
          "symbol": "INOR",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 3.61,
          "max": null,
          "conditions": "VDD=5.0V, 25℃",
          "source_page": 1657,
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        {
          "name": "Normal mode current (24MHz)",
          "symbol": "INOR",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 6.45,
          "max": null,
          "conditions": "VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "Normal mode current (internal 32KHz)",
          "symbol": "INOR",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.57,
          "max": null,
          "conditions": "VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "Power-down mode power with comparator enabled",
          "symbol": "IPD2",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 460,
          "max": null,
          "conditions": "VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
        },
        {
          "name": "Power-down mode power with LVD enabled",
          "symbol": "IPD3",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 520,
          "max": null,
          "conditions": "VDD=5.0V, 25℃",
          "source_page": 1657,
          "source": "datasheet"
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  "discovery_pitch": "STC32G8K64-42I-TSSOP20 (STC Micro) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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}