{
  "id": "cst816s",
  "name": "CST816S Capacitive Touch Controller",
  "category": "ic",
  "family": "touch",
  "manufacturer": "Hynitron",
  "mpn_pattern": "CST816S",
  "description": "Hynitron CST816S self-capacitance touch controller - the touch chip paired with GC9A01 round LCDs in smartwatch projects. I2C 0x15, 2.7-3.6V, QFN-20 3x3. CMOD needs 1-5.6nF C0G cap.",
  "parameters": {
    "contacts": 21,
    "mounting": "SMD",
    "interface": "I2C",
    "i2c_address": "0x15",
    "supply_voltage": "2.7-3.6V",
    "body_mm": "3.0x3.0x0.55"
  },
  "formats": [
    "kicad_mod",
    "kicad_sym",
    "step",
    "glb"
  ],
  "files": {
    "footprint": "https://partreel.com/library/ic/touch/cst816s/cst816s/cst816s.kicad_mod",
    "symbol": "https://partreel.com/library/ic/touch/cst816s/cst816s/cst816s.kicad_sym",
    "model_3d": "https://assets.partreel.com/library/ic/touch/cst816s/cst816s/cst816s.step",
    "preview": "https://assets.partreel.com/library/ic/touch/cst816s/cst816s/cst816s.glb",
    "footprint_svg": "https://partreel.com/library/ic/touch/cst816s/cst816s/cst816s.footprint.svg",
    "symbol_svg": "https://partreel.com/library/ic/touch/cst816s/cst816s/cst816s.symbol.svg"
  },
  "datasheet": "https://www.waveshare.com/w/upload/5/51/CST816S_Datasheet_EN.pdf",
  "license": "CC-BY-4.0",
  "verified": true,
  "tier": null,
  "dimensions_source": "Hynitron CST816S datasheet V1.4: QFN-20 3x3x0.55 pitch 0.4, EP 1.7 (GND). No vendor land pattern - ES8311's recommended QFN-20 3x3 P0.4 pattern reused (dimensionally identical package). Pinout p.4 (CCW).",
  "keywords": [
    "cst816s",
    "hynitron",
    "touch",
    "capacitive",
    "smartwatch",
    "gc9a01",
    "qfn"
  ],
  "field_reports": {
    "worked": 0,
    "problem": 0
  },
  "provenance": {
    "dimensions_source": "Hynitron CST816S datasheet V1.4: QFN-20 3x3x0.55 pitch 0.4, EP 1.7 (GND). No vendor land pattern - ES8311's recommended QFN-20 3x3 P0.4 pattern reused (dimensionally identical package). Pinout p.4 (CCW).",
    "datasheet": "https://www.waveshare.com/w/upload/5/51/CST816S_Datasheet_EN.pdf",
    "generator_source": "https://github.com/mingyo186/partreel/blob/main/generators/gen_ics.py",
    "quality_gates": {
      "gates": [
        "validate_kicad (structure/pads/layers)",
        "KLC drawing rules (silk/fab/courtyard/pin1)",
        "check_overlap (text collisions)",
        "check_render (files/SVG-vs-source/meta completeness)",
        "check_zfight (3D coplanar faces, merged pins)",
        "validate_step (FreeCAD kernel isValid)"
      ],
      "enforcement": "CI runs all gates on every push and blocks deployment on any failure",
      "ci_config": "https://github.com/mingyo186/partreel/blob/main/.github/workflows/deploy.yml"
    },
    "field_reports": {
      "worked": 0,
      "problem": 0
    }
  },
  "page": "https://partreel.com/p/cst816s/",
  "api": "https://partreel.com/api/v1/parts/cst816s.json"
}