STC8H8K64U-45I-LQFP48

{
  "schema_version": 1,
  "type": "component",
  "slug": "stc8h8k64u-45i-lqfp48",
  "title": "STC8H8K64U-45I-LQFP48",
  "brief": "STC Micro Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "mcu",
    "stc8h8k64u-45i-lqfp48"
  ],
  "component": {
    "mpn": "STC8H8K64U-45I-LQFP48",
    "manufacturer": "STC Micro",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "MCU",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2406181641_STC-Micro-STC8H8K64U-45I-LQFP48_C3013145.pdf",
    "parts": {
      "symbol": "stc8h8k64u-45i-lqfp48.kicad_sym",
      "footprint": "stc8h8k64u-45i-lqfp48.kicad_mod",
      "model_3d": "stc8h8k64u-45i-lqfp48-etched.glb",
      "model_3d_plain": "stc8h8k64u-45i-lqfp48.glb",
      "model_3d_step": "stc8h8k64u-45i-lqfp48-etched.step",
      "model_3d_step_plain": "stc8h8k64u-45i-lqfp48.step",
      "lbr": "stc8h8k64u-45i-lqfp48.lbr"
    },
    "distributor_links": {
      "lcsc": "C3013145"
    },
    "pins": [
      {
        "number": "1",
        "name": "P5.3/TxD4_2",
        "type": "bidirectional",
        "description": "Standard bidirectional I/O P5.3; alternate: UART4 TX (TxD4_2)."
      },
      {
        "number": "2",
        "name": "P0.5/AD5/ADC13/T3CLKO",
        "type": "bidirectional",
        "description": "P0.5 GPIO / external-bus AD5 (address+data) / ADC channel 13 input / Timer3 clock-divider output."
      },
      {
        "number": "3",
        "name": "P0.6/AD6/ADC14/T4/PWMETI2_2",
        "type": "bidirectional",
        "description": "P0.6 GPIO / external-bus AD6 / ADC channel 14 / Timer4 external clock in / PWMB external trigger 2 (alt route)."
      },
      {
        "number": "4",
        "name": "P0.7/AD7/T4CLKO",
        "type": "bidirectional",
        "description": "P0.7 GPIO / external-bus AD7 / Timer4 clock-divider output."
      },
      {
        "number": "5",
        "name": "P1.0/ADC0/PWM1P/RxD2",
        "type": "bidirectional",
        "description": "P1.0 GPIO / ADC channel 0 / PWM1 positive capture-compare / UART2 RX."
      },
      {
        "number": "6",
        "name": "P1.1/ADC1/PWM1N/TxD2",
        "type": "bidirectional",
        "description": "P1.1 GPIO / ADC channel 1 / PWM1 negative output / UART2 TX."
      },
      {
        "number": "7",
        "name": "P4.7/TxD2_2",
        "type": "bidirectional",
        "description": "P4.7 GPIO / UART2 TX alt route (TxD2_2)."
      },
      {
        "number": "8",
        "name": "P1.4/ADC4/PWM3P/MISO/SDA",
        "type": "bidirectional",
        "description": "P1.4 GPIO / ADC ch4 / PWM3 positive / SPI MISO / I2C SDA."
      },
      {
        "number": "9",
        "name": "P1.5/ADC5/PWM3N/SCLK/SCL",
        "type": "bidirectional",
        "description": "P1.5 GPIO / ADC ch5 / PWM3 negative / SPI SCLK / I2C SCL."
      },
      {
        "number": "10",
        "name": "P1.6/XTALO/MCLKO_2/RxD_3/PWM4P/ADC6",
        "type": "bidirectional",
        "description": "P1.6 GPIO / crystal-oscillator output XTALO / master clock output alt2 / UART1 RX alt3 / PWM4 positive / ADC ch6."
      },
      {
        "number": "11",
        "name": "P1.7/XTALI/PWM5_2/TxD_3/PWM4N/ADC7",
        "type": "bidirectional",
        "description": "P1.7 GPIO / crystal-oscillator input XTALI / PWM5 alt2 / UART1 TX alt3 / PWM4 negative / ADC ch7."
      },
      {
        "number": "12",
        "name": "P1.3/ADC3/MOSI/PWM2N/T2CLKO",
        "type": "bidirectional",
        "description": "P1.3 GPIO / ADC ch3 / SPI MOSI / PWM2 negative / Timer2 clock-divider output."
      },
      {
        "number": "13",
        "name": "UCAP",
        "type": "passive",
        "description": "USB core LDO stabilization capacitor pin - connect 0.1 µF (0.1-10 µF) to GND. Required for the built-in USB PHY regulator."
      },
      {
        "number": "14",
        "name": "P5.4/nRST/MCLKO/SS/SS_3/PWM2P/PWM6_2/T2/ADC2",
        "type": "bidirectional",
        "description": "Multi-function pin. Default at factory is GPIO P5.4 (low-active internal 4 kΩ pull-up briefly asserted 6.5 ms at power-up); can be configured as external reset nRST (active-low) via ISP. Also master-clock output MCLKO, SPI SS/SS_3, PWM2P, PWM6_2, Timer2 external clock, ADC ch2."
      },
      {
        "number": "15",
        "name": "Vcc/AVcc",
        "type": "power_in",
        "description": "Main supply pin (also serves as ADC analog VCC). Operating range 1.9-5.5 V. Decouple with a 10 µF (or larger) bulk plus 0.1 µF ceramic near the pin."
      },
      {
        "number": "16",
        "name": "ADC_VRef+",
        "type": "power_in",
        "description": "ADC external positive reference voltage input (recommended 2.4 V to VCC). Do not leave floating (leakage current); can be tied to VCC if precision is not critical."
      },
      {
        "number": "17",
        "name": "Gnd/AGnd",
        "type": "power_in",
        "description": "Ground return for both digital and ADC-analog sections (shared pad on this variant)."
      },
      {
        "number": "18",
        "name": "P4.0/MOSI_3",
        "type": "bidirectional",
        "description": "P4.0 GPIO / SPI MOSI alt-route 3."
      },
      {
        "number": "19",
        "name": "P3.0/RxD/D-/INT4",
        "type": "bidirectional",
        "description": "P3.0 GPIO / UART1 RX / USB D- (D minus) / external interrupt 4. Used as the USB negative data line for hardware USB-HID ISP download."
      },
      {
        "number": "20",
        "name": "P3.1/TxD/D+",
        "type": "bidirectional",
        "description": "P3.1 GPIO / UART1 TX / USB D+ (D plus). Positive USB data line."
      },
      {
        "number": "21",
        "name": "P3.2/INT0/SCLK_4/SCL_4/PWMETI/PWMETI2",
        "type": "bidirectional",
        "description": "P3.2 GPIO / external interrupt 0 / SPI SCLK alt4 / I2C SCL alt4 / PWM external trigger inputs (PWMETI, PWMETI2). Sampled at reset for USB-ISP entry."
      },
      {
        "number": "22",
        "name": "P3.3/INT1/MISO_4/SDA_4/PWM4N_4/PWM7_2",
        "type": "bidirectional",
        "description": "P3.3 GPIO / external interrupt 1 / SPI MISO alt4 / I2C SDA alt4 / PWM4N alt4 / PWM7 alt2."
      },
      {
        "number": "23",
        "name": "P3.4/T0/T1CLKO/MOSI_4/PWM4P_4/PWM8_2/CMPO",
        "type": "bidirectional",
        "description": "P3.4 GPIO / Timer0 external clock in / Timer1 clock divider out / SPI MOSI alt4 / PWM4P alt4 / PWM8 alt2 / analog comparator output CMPO."
      },
      {
        "number": "24",
        "name": "P5.0/RxD3_2/CMP+_2",
        "type": "bidirectional",
        "description": "P5.0 GPIO / UART3 RX alt2 / analog comparator positive input alt2."
      },
      {
        "number": "25",
        "name": "P5.1/TxD3_2/CMP+_3",
        "type": "bidirectional",
        "description": "P5.1 GPIO / UART3 TX alt2 / analog comparator positive input alt3."
      },
      {
        "number": "26",
        "name": "P3.5/T1/T0CLKO/SS_4/PWMFLT/PWMFLT2",
        "type": "bidirectional",
        "description": "P3.5 GPIO / Timer1 external clock in / Timer0 clock divider out / SPI SS alt4 / enhanced-PWMA fault-detect (PWMFLT) / enhanced-PWMB fault-detect (PWMFLT2)."
      },
      {
        "number": "27",
        "name": "P3.6/INT2/RxD_2/CMP-",
        "type": "bidirectional",
        "description": "P3.6 GPIO / external interrupt 2 / UART1 RX alt2 / analog comparator negative input."
      },
      {
        "number": "28",
        "name": "P3.7/INT3/TxD_2/CMP+",
        "type": "bidirectional",
        "description": "P3.7 GPIO / external interrupt 3 / UART1 TX alt2 / analog comparator positive input."
      },
      {
        "number": "29",
        "name": "P4.1/MISO_3/CMPO_2/PWMETI_2",
        "type": "bidirectional",
        "description": "P4.1 GPIO / SPI MISO alt3 / comparator output alt2 / PWM external trigger alt2."
      },
      {
        "number": "30",
        "name": "P4.2/WR",
        "type": "bidirectional",
        "description": "P4.2 GPIO / external-bus write-strobe /WR output."
      },
      {
        "number": "31",
        "name": "P4.3/RxD_4/SCLK_3",
        "type": "bidirectional",
        "description": "P4.3 GPIO / UART1 RX alt4 / SPI SCLK alt3."
      },
      {
        "number": "32",
        "name": "P4.4/RD/TxD_4",
        "type": "bidirectional",
        "description": "P4.4 GPIO / external-bus read-strobe /RD / UART1 TX alt4."
      },
      {
        "number": "33",
        "name": "P2.0/A8/PWM1P_2/PWM5",
        "type": "bidirectional",
        "description": "P2.0 GPIO / external-bus address A8 / PWM1P alt2 / PWM5 capture-compare."
      },
      {
        "number": "34",
        "name": "P2.1/A9/PWM1N_2/PWM6",
        "type": "bidirectional",
        "description": "P2.1 GPIO / external-bus address A9 / PWM1N alt2 / PWM6."
      },
      {
        "number": "35",
        "name": "P2.2/A10/SS_2/PWM2P_2/PWM7",
        "type": "bidirectional",
        "description": "P2.2 GPIO / external-bus A10 / SPI SS alt2 / PWM2P alt2 / PWM7."
      },
      {
        "number": "36",
        "name": "P2.3/A11/MOSI_2/PWM2N_2/PWM8",
        "type": "bidirectional",
        "description": "P2.3 GPIO / external-bus A11 / SPI MOSI alt2 / PWM2N alt2 / PWM8."
      },
      {
        "number": "37",
        "name": "P2.4/A12/MISO_2/SDA_2/PWM3P_2",
        "type": "bidirectional",
        "description": "P2.4 GPIO / external-bus A12 / SPI MISO alt2 / I2C SDA alt2 / PWM3P alt2."
      },
      {
        "number": "38",
        "name": "P2.5/A13/SCLK_2/SCL_2/PWM3N_2",
        "type": "bidirectional",
        "description": "P2.5 GPIO / external-bus A13 / SPI SCLK alt2 / I2C SCL alt2 / PWM3N alt2."
      },
      {
        "number": "39",
        "name": "P2.6/A14/PWM4P_2",
        "type": "bidirectional",
        "description": "P2.6 GPIO / external-bus A14 / PWM4P alt2."
      },
      {
        "number": "40",
        "name": "P2.7/A15/PWM4N_2",
        "type": "bidirectional",
        "description": "P2.7 GPIO / external-bus A15 / PWM4N alt2."
      },
      {
        "number": "41",
        "name": "P4.5/ALE",
        "type": "bidirectional",
        "description": "P4.5 GPIO / external-bus address-latch-enable ALE output."
      },
      {
        "number": "42",
        "name": "P4.6/RxD2_2",
        "type": "bidirectional",
        "description": "P4.6 GPIO / UART2 RX alt2."
      },
      {
        "number": "43",
        "name": "P0.0/AD0/ADC8/RxD3/PWM5_3/T3_2",
        "type": "bidirectional",
        "description": "P0.0 GPIO / external-bus AD0 / ADC ch8 / UART3 RX / PWM5 alt3 / Timer3 external clock alt2."
      },
      {
        "number": "44",
        "name": "P0.1/AD1/ADC9/TxD3/PWM6_3/T3CLKO_2",
        "type": "bidirectional",
        "description": "P0.1 GPIO / external-bus AD1 / ADC ch9 / UART3 TX / PWM6 alt3 / Timer3 clock divider out alt2."
      },
      {
        "number": "45",
        "name": "P0.2/AD2/ADC10/RxD4/PWM7_3/T4_2",
        "type": "bidirectional",
        "description": "P0.2 GPIO / external-bus AD2 / ADC ch10 / UART4 RX / PWM7 alt3 / Timer4 external clock alt2."
      },
      {
        "number": "46",
        "name": "P0.3/AD3/ADC11/TxD4/PWM8_3/T4CLKO_2",
        "type": "bidirectional",
        "description": "P0.3 GPIO / external-bus AD3 / ADC ch11 / UART4 TX / PWM8 alt3 / Timer4 clock divider out alt2."
      },
      {
        "number": "47",
        "name": "P0.4/AD4/ADC12/T3",
        "type": "bidirectional",
        "description": "P0.4 GPIO / external-bus AD4 / ADC ch12 / Timer3 external clock input."
      },
      {
        "number": "48",
        "name": "P5.2/RxD4_2",
        "type": "bidirectional",
        "description": "P5.2 GPIO / UART4 RX alt2 (RxD4_2)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2406181641_STC-Micro-STC8H8K64U-45I-LQFP48_C3013145.pdf",
        "pages": 2180,
        "sha256": "046aea020e4685f3",
        "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -4.1625,
        -2.75
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "LQFP-48_7x7mm_P0.5mm@sha256:1ccc5ad4d95398a4",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "stc8h8k64u-45i-lqfp48.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9,
          9,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "9dea352d93177c2904afd7d7b68ea8855ce1ab691f69f8b3e13655600514b6bf",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stc8h8k64u-45i-lqfp48-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9,
          9,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "9535943f449e2448f3bc29a8d417e6f9e1a65fcd0903f9a64e35bd8be8a470d6",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STC Micro",
      "Package": "LQFP-48(7x7)",
      "Category": "MCU",
      "Pins": "48"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "stc8h8k64u-45i-lqfp48"
  ],
  "discovery_pitch": "STC8H8K64U-45I-LQFP48 (STC Micro) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "stc8h8k64u-45i-lqfp48.kicad_sym",
    "stc8h8k64u-45i-lqfp48.kicad_mod",
    "stc8h8k64u-45i-lqfp48.glb",
    "stc8h8k64u-45i-lqfp48.step",
    "stc8h8k64u-45i-lqfp48.lbr",
    "docs/hero.png",
    "docs/stc8h8k64u-45i-lqfp48-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "STC8H8K64U-45I-LQFP48",
      "kind": "packaging"
    },
    {
      "mpn": "STC8H8K64U-45I-QFN48",
      "kind": "unknown"
    },
    {
      "mpn": "STC8H8K64U-45I-LQFP64",
      "kind": "unknown"
    },
    {
      "mpn": "STC8H8K64U-45I-QFN64",
      "kind": "unknown"
    },
    {
      "mpn": "STC8H8K64U-45I-LQFP44",
      "kind": "unknown"
    },
    {
      "mpn": "STC8H8K64U-45I-LQFP32",
      "kind": "unknown"
    },
    {
      "mpn": "STC8H8K64U-45I-QFN32",
      "kind": "unknown"
    },
    {
      "mpn": "STC8H8K64U-45I-PDIP40",
      "kind": "unknown"
    },
    {
      "mpn": "STC8H8K64U-45I-SKDIP28",
      "kind": "unknown"
    },
    {
      "mpn": "STC8H8K64U-45I-TSSOP28",
      "kind": "unknown"
    },
    {
      "mpn": "STC8H8K64U-45I-TSSOP20",
      "kind": "unknown"
    },
    {
      "mpn": "STC8H8K64U-45I-SOP16",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-25T08:30:55.011Z"
}