AT24C128BN

{
  "slug": "at24c128bn",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI EEPROM, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "memory",
    "at24c128bn",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "at24c128bn.kicad_sym",
    "at24c128bn.kicad_mod",
    "at24c128bn.glb",
    "at24c128bn.step",
    "at24c128bn.lbr",
    "docs/hero.png",
    "docs/at24c128bn-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "at24c128bn-hero.glb",
    "at24c128bn-hero.overlay.json",
    "at24c128bn-etched.glb"
  ],
  "component": {
    "mpn": "AT24C128BN",
    "manufacturer": "HGSEMI",
    "package": "DIP-8",
    "pin_count": 8,
    "category": "Memory",
    "subcategory": "EEPROM",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604432181553086464",
    "parts": {
      "symbol": "at24c128bn.kicad_sym",
      "footprint": "at24c128bn.kicad_mod",
      "model_3d": "at24c128bn-hero.glb",
      "model_3d_plain": "at24c128bn-etched.glb",
      "model_3d_step": "at24c128bn-etched.step",
      "model_3d_step_plain": "at24c128bn.step",
      "lbr": "at24c128bn.lbr"
    },
    "distributor_links": {
      "lcsc": "C41415959"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T13:48:55Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "A0",
        "type": "input",
        "description": "Device address input with internal pull-down that selects the device address and may be tied directly to VCC or GND in any combination, with a floating pin read as zero."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "Device address input with internal pull-down that selects the device address and may be tied directly to VCC or GND in any combination, with a floating pin read as zero."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "input",
        "description": "Device address input with internal pull-down that selects the device address and may be tied directly to VCC or GND in any combination, with a floating pin read as zero."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "Open-drain serial address, data input and data output that must be pulled high through an external pull-up resistor and may be wire-ORed with other open-drain devices on the bus."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "Serial clock input that clocks data in on its rising edge and clocks data out on its falling edge."
      },
      {
        "number": "7",
        "name": "WP",
        "type": "input",
        "description": "Write protect input with internal pull-down where connecting it to VCC write-protects the entire array, and a floating pin is read as zero."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply input, rated 1.7 V to 5.5 V per the DC characteristics."
      }
    ],
    "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 datasheet has no pin-diagram graphic in the extracted text (only a '(Top View)' label), so pin n; The datasheet lists the DIP-8 package for AT24C128BN (marking 24C128B, tube packing), so the DIP-8 p"
        ],
        "pages_sent": 16,
        "cost_usd": 0.0528,
        "at": "2026-10-18T13:47:30"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604432181553086464",
        "pages": 16,
        "sha256": "946e15361107ce53",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "at24c128bn.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "4a377a56a8d9e9c0b86c095ef9ecc1869ac19e7f5069a3247b294250bf4f235d",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "at24c128bn-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3dea90add1716d9467204852405c3f4a3770c0a3bc8e0600c33ecd3a5104d71c",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}