AT24C128AM

{
  "schema_version": 1,
  "type": "component",
  "slug": "at24c128am",
  "title": "AT24C128AM",
  "brief": "HGSEMI EEPROM, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "memory",
    "at24c128am"
  ],
  "component": {
    "mpn": "AT24C128AM",
    "manufacturer": "HGSEMI",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Memory",
    "subcategory": "EEPROM",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/328bc17a7cc4c3d1af8e1cf3ad469a2d.pdf",
    "parts": {
      "symbol": "at24c128am.kicad_sym",
      "footprint": "at24c128am.kicad_mod",
      "model_3d": "at24c128am-etched.glb",
      "model_3d_plain": "at24c128am.glb",
      "model_3d_step": "at24c128am-etched.step",
      "model_3d_step_plain": "at24c128am.step",
      "lbr": "at24c128am.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "A0",
        "type": "input",
        "description": "Device address input bit 0. Hard-wired to VCC or GND to select one of up to 8 devices sharing the I2C bus. Internally biased to logic low if left floating."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "Device address input bit 1. Hard-wired to VCC or GND to select one of up to 8 devices sharing the I2C bus. Internally biased to logic low if left floating."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "input",
        "description": "Device address input bit 2. Hard-wired to VCC or GND to select one of up to 8 devices sharing the I2C bus. Internally biased to logic low if left floating."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "Bidirectional I2C serial data line. Open-drain output; requires an external pull-up resistor to VCC. May be wire-ORed with other open-drain/open-collector devices."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "I2C serial clock input. Positive edges clock data into the EEPROM; negative edges clock data out. Supports 100 kHz, 400 kHz, and 1 MHz bus speeds."
      },
      {
        "number": "7",
        "name": "WP",
        "type": "input",
        "description": "Hardware write protect. Tie to GND for normal read/write operation; tie to VCC to write-protect the full 128 Kbit array."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage input. Single-supply operation up to 1 MHz interface speed."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/328bc17a7cc4c3d1af8e1cf3ad469a2d.pdf",
        "pages": 15,
        "sha256": "ed9771daf6536261",
        "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": "at24c128am.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "at24c128am-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "6fd7f681221c68154a4836e3b1896518c7e67023066836928111dbda25115d99",
        "checked": "2026-11-03",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "SOP-8",
      "Category": "Memory",
      "Pins": "8"
    }
  },
  "variants": [
    {
      "mpn": "AT24C128AM/TR",
      "kind": "packaging"
    },
    {
      "mpn": "AT24C128AMAN",
      "kind": "packaging"
    },
    {
      "mpn": "AT24C128AMM/TR",
      "kind": "packaging"
    },
    {
      "mpn": "AT24C128AMADQ/TR",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "at24c128am"
  ],
  "discovery_pitch": "AT24C128AM (HGSEMI) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "at24c128am.kicad_sym",
    "at24c128am.kicad_mod",
    "at24c128am.glb",
    "at24c128am.step",
    "at24c128am.lbr",
    "docs/hero.png",
    "docs/at24c128am-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:05:50.801Z"
}