CH552E

{
  "schema_version": 1,
  "type": "component",
  "slug": "ch552e",
  "title": "CH552E",
  "brief": "WCH Jiangsu Qin Heng Microcontrollers (MCU/MPU/SOC), MSOP-10. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "mcu",
    "ch552e"
  ],
  "component": {
    "mpn": "CH552E",
    "manufacturer": "WCH Jiangsu Qin Heng",
    "package": "MSOP-10",
    "pin_count": 10,
    "category": "MCU",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/f30f383a4389a66627fc413559920cd0.pdf",
    "parts": {
      "symbol": "ch552e.kicad_sym",
      "footprint": "ch552e.kicad_mod",
      "model_3d": "ch552e-etched.glb",
      "model_3d_plain": "ch552e.glb",
      "model_3d_step": "ch552e-etched.step",
      "model_3d_step_plain": "ch552e.step",
      "lbr": "ch552e.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "P1.4/T2_/CAP1_/SCS/TIN2/UCC1/AIN1",
        "type": "bidirectional",
        "description": "Port 1 bit 4 general-purpose I/O with internal pull-up by default. Muxed alternate functions: Timer 2 external count input (T2_ inverted mapping), Timer 2 capture 1 input (CAP1_), SPI0 slave chip-select (SCS), Touch-Key channel TIN2 input, USB type-C configuration channel UCC1, and ADC channel AIN1 analog input."
      },
      {
        "number": "2",
        "name": "P1.5/MOSI/PWM1/TIN3/UCC2/AIN2",
        "type": "bidirectional",
        "description": "Port 1 bit 5 general-purpose I/O with internal pull-up by default. Muxed alternate functions: SPI0 MOSI (master output / slave input), PWM1 output, Touch-Key channel TIN3, USB type-C configuration channel UCC2, and ADC channel AIN2 analog input."
      },
      {
        "number": "3",
        "name": "P1.6/MISO/RXD1/TIN4",
        "type": "bidirectional",
        "description": "Port 1 bit 6 general-purpose I/O with internal pull-up by default. Muxed alternate functions: SPI0 MISO (master input / slave output), UART1 serial data receive (RXD1), and Touch-Key channel TIN4."
      },
      {
        "number": "4",
        "name": "P1.7/SCK/TXD1/TIN5",
        "type": "bidirectional",
        "description": "Port 1 bit 7 general-purpose I/O with internal pull-up by default. Muxed alternate functions: SPI0 serial clock (SCK), UART1 serial data transmit (TXD1), and Touch-Key channel TIN5."
      },
      {
        "number": "5",
        "name": "RST/T2EX/CAP2_",
        "type": "input",
        "description": "External reset input, active high. Internal pull-down resistor on RST. Alternate functions: Timer 2 reload / capture trigger input (T2EX) and Timer 2 capture 2 input (CAP2_ alternate mapping)."
      },
      {
        "number": "6",
        "name": "P3.6/UDP",
        "type": "bidirectional",
        "description": "Port 3 bit 6 general-purpose I/O; alternate function is the USB D+ (UDP) signal. When used as USB, no external series resistor is allowed. P3.6 uses V33 as its I/O supply, so digital high level is limited to V33 and does not support 5V logic."
      },
      {
        "number": "7",
        "name": "P3.7/UDM",
        "type": "bidirectional",
        "description": "Port 3 bit 7 general-purpose I/O; alternate function is the USB D− (UDM) signal. When used as USB, no external series resistor is allowed. P3.7 uses V33 as its I/O supply, so digital high level is limited to V33 and does not support 5V logic."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground (VSS) return for the chip."
      },
      {
        "number": "9",
        "name": "VCC",
        "type": "power_in",
        "description": "Main power supply input (VDD), 3.3 V or 5 V. Requires an external 0.1 µF decoupling capacitor to GND placed close to the pin."
      },
      {
        "number": "10",
        "name": "V33",
        "type": "power_in",
        "description": "Internal USB LDO regulator output and internal USB supply input. When VCC < 3.6 V, tie V33 to VCC externally. When VCC > 3.6 V (5 V operation), connect a 0.1 µF decoupling capacitor from V33 to GND and let the internal LDO produce 3.3 V."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/f30f383a4389a66627fc413559920cd0.pdf",
        "pages": 53,
        "sha256": "b3995c47a6c00a9f",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 10,
        "described": 10,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ch552e.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b8f88eac3ce221c2ccb0b5048f9ad49c2ef4af148f8ae50c4e232e357683f547",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ch552e-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d70d4f02e467f4e362e5e3c17bde0f4cd2fc5bb2ade181bdbcebcdf8656455ed",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "WCH Jiangsu Qin Heng",
      "Package": "MSOP-10",
      "Category": "MCU",
      "Pins": "10"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ch552e"
  ],
  "discovery_pitch": "CH552E (WCH Jiangsu Qin Heng) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ch552e.kicad_sym",
    "ch552e.kicad_mod",
    "ch552e.glb",
    "ch552e.step",
    "ch552e-etched.step",
    "ch552e.lbr",
    "docs/hero.png",
    "docs/ch552e-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "CH552E",
      "kind": "packaging"
    },
    {
      "mpn": "CH552T",
      "kind": "unknown"
    },
    {
      "mpn": "CH552G",
      "kind": "unknown"
    },
    {
      "mpn": "CH552P",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-24T19:02:49.131Z"
}