HT16C21A-24SSOP

{
  "slug": "ht16c21a-24ssop",
  "version": "0.1.0",
  "type": "component",
  "description": "Holtek Semicon LCD Drivers, SSOP-24-150mil. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "led drivers",
    "ht16c21a-24ssop",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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  "files": [
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    "README.md",
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    "ht16c21a-24ssop.step",
    "ht16c21a-24ssop.lbr",
    "docs/hero.png",
    "docs/ht16c21a-24ssop-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
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  "component": {
    "mpn": "HT16C21A-24SSOP",
    "manufacturer": "Holtek Semicon",
    "package": "SSOP-24-150mil",
    "pin_count": 24,
    "category": "LED Drivers",
    "subcategory": "LCD Drivers",
    "datasheet": "https://www.holtek.com.cn/webapi/116706/simHT16C21Av130.pdf",
    "parts": {
      "symbol": "ht16c21a-24ssop.kicad_sym",
      "footprint": "ht16c21a-24ssop.kicad_mod",
      "model_3d": "ht16c21a-24ssop-etched.glb",
      "model_3d_plain": "ht16c21a-24ssop.glb",
      "model_3d_step": "ht16c21a-24ssop-etched.step",
      "model_3d_step_plain": "ht16c21a-24ssop.step",
      "lbr": "ht16c21a-24ssop.lbr"
    },
    "distributor_links": {
      "lcsc": "C5444714"
    },
    "distributor_check": {
      "checked_at": "2026-09-29T17:06:03Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SEG19/VLCD",
        "type": "output",
        "description": "LCD segment 19 output or LCD bias voltage (VLCD) reference pin (configurable as SEG or VLCD via internal register; 0V to VDD)."
      },
      {
        "number": "2",
        "name": "SEG18",
        "type": "output",
        "description": "LCD segment 18 output; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "3",
        "name": "SEG15",
        "type": "output",
        "description": "LCD segment 15 output; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "4",
        "name": "SEG14",
        "type": "output",
        "description": "LCD segment 14 output; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "5",
        "name": "SEG13",
        "type": "output",
        "description": "LCD segment 13 output; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "6",
        "name": "SEG12",
        "type": "output",
        "description": "LCD segment 12 output; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "7",
        "name": "SEG11",
        "type": "output",
        "description": "LCD segment 11 output; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "8",
        "name": "SEG10",
        "type": "output",
        "description": "LCD segment 10 output; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "9",
        "name": "SEG7",
        "type": "output",
        "description": "LCD segment 7 output; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "10",
        "name": "SEG6",
        "type": "output",
        "description": "LCD segment 6 output; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "11",
        "name": "SEG5",
        "type": "output",
        "description": "LCD segment 5 output; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "12",
        "name": "SEG4",
        "type": "output",
        "description": "LCD segment 4 output; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "13",
        "name": "COM7/SEG3",
        "type": "output",
        "description": "LCD COM 7 output or segment 3 output in multiplexed mode; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "14",
        "name": "COM6/SEG2",
        "type": "output",
        "description": "LCD COM 6 output or segment 2 output in multiplexed mode; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "15",
        "name": "COM5/SEG1",
        "type": "output",
        "description": "LCD COM 5 output or segment 1 output in multiplexed mode; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "16",
        "name": "COM4/SEG0",
        "type": "output",
        "description": "LCD COM 4 output or segment 0 output in multiplexed mode; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "17",
        "name": "COM3",
        "type": "output",
        "description": "LCD COM 3 output; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "18",
        "name": "COM2",
        "type": "output",
        "description": "LCD COM 2 output; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "19",
        "name": "COM1",
        "type": "output",
        "description": "LCD COM 1 output; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "20",
        "name": "COM0",
        "type": "output",
        "description": "LCD COM 0 output; sink/source capability 250-800 \u03bcA depending on VLCD voltage."
      },
      {
        "number": "21",
        "name": "VSS",
        "type": "power_in",
        "description": "Negative power supply voltage, ground reference (0V)."
      },
      {
        "number": "22",
        "name": "SCL",
        "type": "input",
        "description": "I2C serial clock input with Schmitt trigger; VIH \u2265 0.7VDD, VIL \u2264 0.3VDD, input filter time constant 50-100 ns."
      },
      {
        "number": "23",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C serial data input/output, open-drain configuration; VIH \u2265 0.7VDD, VIL \u2264 0.3VDD, external pull-up required."
      },
      {
        "number": "24",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive power supply voltage (2.4V to 5.5V)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.holtek.com.cn/webapi/116706/simHT16C21Av130.pdf",
        "pages": 35,
        "sha256": "9e2057530a66f187",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 24,
        "described": 24,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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  }
}