AT24C256N

{
  "slug": "at24c256n",
  "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",
    "at24c256n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "at24c256n.kicad_sym",
    "at24c256n.kicad_mod",
    "at24c256n.glb",
    "at24c256n.step",
    "at24c256n.lbr",
    "docs/hero.png",
    "docs/at24c256n-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "at24c256n-hero.glb",
    "at24c256n-hero.overlay.json",
    "at24c256n-etched.glb"
  ],
  "component": {
    "mpn": "AT24C256N",
    "manufacturer": "HGSEMI",
    "package": "DIP-8",
    "pin_count": 8,
    "category": "Memory",
    "subcategory": "EEPROM",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588912606908461056",
    "parts": {
      "symbol": "at24c256n.kicad_sym",
      "footprint": "at24c256n.kicad_mod",
      "model_3d": "at24c256n-hero.glb",
      "model_3d_plain": "at24c256n-etched.glb",
      "model_3d_step": "at24c256n-etched.step",
      "model_3d_step_plain": "at24c256n.step",
      "lbr": "at24c256n.lbr"
    },
    "distributor_links": {
      "lcsc": "C434602"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T05:15:09Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "A0",
        "type": "input",
        "description": "Device address input that is hardwired to VIH or VIL, and is read as VIL if left unconnected."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "Device address input that is hardwired to VIH or VIL, and is read as VIL if left unconnected."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "input",
        "description": "Device address input that is hardwired to VIH or VIL, and is read as VIL if left unconnected."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "Serial data line that is bi-directional with an open-drain output, so it can be wire-ORed and is typically pulled high by an external resistor."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "Serial clock input where the rising edge latches data into the EEPROM and the falling edge clocks data out."
      },
      {
        "number": "7",
        "name": "WP",
        "type": "input",
        "description": "Write protect input that blocks all programming when connected to VIH or VCC, allows programming when left unconnected or at VIL, and does not affect reads."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage of 1.8V to 5.5V, with a decoupling capacitor of at least 10nF recommended."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet does not say which package the MPN AT24C256N ships in. DIP-8 is taken from the package; The datasheet lists NC (No-Connect) in its pin function table, but no pin on the 8-pin drawing is NC",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 11,
        "cost_usd": 0.1751,
        "at": "2026-10-19T05:12:40"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588912606908461056",
        "pages": 11,
        "sha256": "d7220784e4d64aba",
        "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": "at24c256n.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": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "at24c256n-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": "200e21c25d33014da4c015d2f0ab4eeec3a9449101fb855df2bd011d8bdd6452",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}