AT24LC128M

{
  "slug": "at24lc128m",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI EEPROM, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "memory",
    "at24lc128m",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "at24lc128m.kicad_sym",
    "at24lc128m.kicad_mod",
    "at24lc128m.glb",
    "at24lc128m.step",
    "at24lc128m.lbr",
    "docs/hero.png",
    "docs/at24lc128m-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "at24lc128m-hero.glb",
    "at24lc128m-hero.overlay.json",
    "at24lc128m-etched.glb"
  ],
  "component": {
    "mpn": "AT24LC128M",
    "manufacturer": "HGSEMI",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Memory",
    "subcategory": "EEPROM",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589838214539210752",
    "parts": {
      "symbol": "at24lc128m.kicad_sym",
      "footprint": "at24lc128m.kicad_mod",
      "model_3d": "at24lc128m-hero.glb",
      "model_3d_plain": "at24lc128m-etched.glb",
      "model_3d_step": "at24lc128m-etched.step",
      "model_3d_step_plain": "at24lc128m.step",
      "lbr": "at24lc128m.lbr"
    },
    "distributor_links": {
      "lcsc": "C3007893"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T10:14:10Z",
      "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 that is hardwired or left floating; if floating and board VCC-plane coupling is under 3 pF it is internally pulled down to GND, and if coupling exceeds 3 pF the datasheet recommends connecting it to GND."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "Device address input that is hardwired or left floating; if floating and board VCC-plane coupling is under 3 pF it is internally pulled down to GND, and if coupling exceeds 3 pF the datasheet recommends connecting it to GND."
      },
      {
        "number": "3",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect pin."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "Open-drain bidirectional serial data pin for two-wire transfer that may be wire-ORed with other open-drain or open-collector devices and is normally pulled high by an external device."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "Serial clock input where data is clocked into the EEPROM on the positive edge and clocked out on the negative edge."
      },
      {
        "number": "7",
        "name": "WP",
        "type": "input",
        "description": "Write-protect input: connecting to GND allows normal write operations, while connecting to VCC inhibits all memory writes (full array protection); if floating and coupling is under 3 pF it is pulled down to GND, and above 3 pF the datasheet recommends connecting it to GND."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply, specified from 1.8 V to 5.5 V."
      }
    ],
    "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's device addressing section and the A2 pin-floating note refer to an A2 address input,; Pin 3 is listed as NC in the pin description table; it is included as unconnected, as printed."
        ],
        "pages_sent": 13,
        "cost_usd": 0.0538,
        "at": "2026-10-18T10:12:20"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589838214539210752",
        "pages": 13,
        "sha256": "4c0cd875d4ced8b2",
        "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": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "at24lc128m-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b16ab8b1e01f8688fdc133cdcbd89bf3940be88975dffaa1e6acc2b9f110b034",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}