GN1621S28

{
  "slug": "gn1621s28",
  "version": "0.1.0",
  "type": "component",
  "description": "GN Semic LCD Drivers, SOP-28. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "led drivers",
    "gn1621s28",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "gn1621s28.kicad_sym",
    "gn1621s28.kicad_mod",
    "gn1621s28.glb",
    "gn1621s28.step",
    "gn1621s28.lbr",
    "docs/hero.png",
    "docs/gn1621s28-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "gn1621s28-hero.glb",
    "gn1621s28-hero.overlay.json",
    "gn1621s28-etched.glb"
  ],
  "component": {
    "mpn": "GN1621S28",
    "manufacturer": "GN Semic",
    "package": "SOP-28",
    "pin_count": 28,
    "category": "LED Drivers",
    "subcategory": "LCD Drivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590906971648847872",
    "parts": {
      "symbol": "gn1621s28.kicad_sym",
      "footprint": "gn1621s28.kicad_mod",
      "model_3d": "gn1621s28-hero.glb",
      "model_3d_plain": "gn1621s28-etched.glb",
      "model_3d_step": "gn1621s28-etched.step",
      "model_3d_step_plain": "gn1621s28.step",
      "lbr": "gn1621s28.lbr"
    },
    "distributor_links": {
      "lcsc": "C19180989"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T15:46:37Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SEG",
        "type": "output",
        "description": "LCD segment drive output; the segment index for this pin is not stated in the text."
      },
      {
        "number": "2",
        "name": "SEG",
        "type": "output",
        "description": "LCD segment drive output; the segment index for this pin is not stated in the text."
      },
      {
        "number": "3",
        "name": "SEG",
        "type": "output",
        "description": "LCD segment drive output; the segment index for this pin is not stated in the text."
      },
      {
        "number": "4",
        "name": "SEG",
        "type": "output",
        "description": "LCD segment drive output; the segment index for this pin is not stated in the text."
      },
      {
        "number": "5",
        "name": "SEG",
        "type": "output",
        "description": "LCD segment drive output; the segment index for this pin is not stated in the text."
      },
      {
        "number": "6",
        "name": "/CS",
        "type": "input",
        "description": "Chip select, active low; when held high, data and command transfers are invalid and the serial interface is reset, and it must be pulsed high to initialize before a mode command or mode change."
      },
      {
        "number": "7",
        "name": "/WR",
        "type": "input",
        "description": "Write clock input; data, address and command on DATA are written into the GN1621 on the rising edge of /WR."
      },
      {
        "number": "8",
        "name": "DATA",
        "type": "bidirectional",
        "description": "Serial data input/output for read and write data and for write commands; requires an external pull-up resistor."
      },
      {
        "number": "9",
        "name": "VSS",
        "type": "power_in",
        "description": "System ground."
      },
      {
        "number": "10",
        "name": "VLCD",
        "type": "power_in",
        "description": "LCD power supply input used to set the LCD operating voltage; VLCD must be lower than VDD."
      },
      {
        "number": "11",
        "name": "VDD",
        "type": "power_in",
        "description": "System power supply positive; operating voltage is 2.0 V to 5.5 V per the DC electrical table."
      },
      {
        "number": "12",
        "name": "COM0",
        "type": "output",
        "description": "LCD common drive output (COM0); 2, 3 or 4 commons are selectable by command."
      },
      {
        "number": "13",
        "name": "COM1",
        "type": "output",
        "description": "LCD common drive output (COM1); 2, 3 or 4 commons are selectable by command."
      },
      {
        "number": "14",
        "name": "COM2",
        "type": "output",
        "description": "LCD common drive output (COM2); 2, 3 or 4 commons are selectable by command."
      },
      {
        "number": "15",
        "name": "COM3",
        "type": "output",
        "description": "LCD common drive output (COM3); 2, 3 or 4 commons are selectable by command."
      },
      {
        "number": "16",
        "name": "SEG",
        "type": "output",
        "description": "LCD segment drive output; the segment index for this pin is not stated in the text."
      },
      {
        "number": "17",
        "name": "SEG",
        "type": "output",
        "description": "LCD segment drive output; the segment index for this pin is not stated in the text."
      },
      {
        "number": "18",
        "name": "SEG",
        "type": "output",
        "description": "LCD segment drive output; the segment index for this pin is not stated in the text."
      },
      {
        "number": "19",
        "name": "SEG",
        "type": "output",
        "description": "LCD segment drive output; the segment index for this pin is not stated in the text."
      },
      {
        "number": "20",
        "name": "SEG",
        "type": "output",
        "description": "LCD segment drive output; the segment index for this pin is not stated in the text."
      },
      {
        "number": "21",
        "name": "SEG",
        "type": "output",
        "description": "LCD segment drive output; the segment index for this pin is not stated in the text."
      },
      {
        "number": "22",
        "name": "SEG",
        "type": "output",
        "description": "LCD segment drive output; the segment index for this pin is not stated in the text."
      },
      {
        "number": "23",
        "name": "SEG",
        "type": "output",
        "description": "LCD segment drive output; the segment index for this pin is not stated in the text."
      },
      {
        "number": "24",
        "name": "SEG",
        "type": "output",
        "description": "LCD segment drive output; the segment index for this pin is not stated in the text."
      },
      {
        "number": "25",
        "name": "SEG",
        "type": "output",
        "description": "LCD segment drive output; the segment index for this pin is not stated in the text."
      },
      {
        "number": "26",
        "name": "SEG",
        "type": "output",
        "description": "LCD segment drive output; the segment index for this pin is not stated in the text."
      },
      {
        "number": "27",
        "name": "SEG",
        "type": "output",
        "description": "LCD segment drive output; the segment index for this pin is not stated in the text."
      },
      {
        "number": "28",
        "name": "SEG",
        "type": "output",
        "description": "LCD segment drive output; the segment index for this pin is not stated in the text."
      }
    ],
    "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 GN1621S28 to SOP28 mapping is inferred from the MPN suffix and the package list on page 1; the d; The pin table's column alignment is garbled in extraction. The SOP28 assignments (COM0-COM3 = 12-15,; The BZ/BZ pins for SOP28 are not assigned in the text. The stray '19/20' entry is attributed to SSOP",
          "6/28 pins cited to the wrong page (name found elsewhere): ['13:COM1@p2', '14:COM2@p2', '22:SEG@p2', '23:SEG@p2']"
        ],
        "pages_sent": 18,
        "cost_usd": 0.0933,
        "at": "2026-10-18T15:43:54"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590906971648847872",
        "pages": 18,
        "sha256": "50e474dfb3bd2466",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 28,
        "described": 28,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "gn1621s28.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          11.636,
          18.16,
          2.666
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "ecc34510e8f74b6103a72c2f24133ad80006c738972a56531d1221b277fcecdb",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "gn1621s28-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          11.636,
          18.16,
          2.666
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "9e5f84258424feebe07393d54406de10881ef10911ad7471269ccde4205d71ab",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}