AT24C02CMM

{
  "schema_version": 1,
  "type": "component",
  "slug": "at24c02cmm",
  "title": "AT24C02CMM",
  "brief": "HGSEMI EEPROM, MSOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "memory",
    "at24c02cmm"
  ],
  "component": {
    "mpn": "AT24C02CMM",
    "manufacturer": "HGSEMI",
    "package": "MSOP-8",
    "pin_count": 8,
    "category": "Memory",
    "subcategory": "EEPROM",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2405210917_HGSEMI-AT24C02CMM-TR_C7432365.pdf",
    "parts": {
      "symbol": "at24c02cmm.kicad_sym",
      "footprint": "at24c02cmm.kicad_mod",
      "model_3d": "at24c02cmm-etched.glb",
      "model_3d_plain": "at24c02cmm.glb",
      "model_3d_step": "at24c02cmm-etched.step",
      "model_3d_step_plain": "at24c02cmm.step",
      "lbr": "at24c02cmm.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "E0",
        "type": "input",
        "description": "Device address input bit 0. Hard-wired to VCC or GND to set the lower bit of the I2C slave address, allowing up to eight AT24C02C devices on one bus. Internally pulled down to GND if left floating."
      },
      {
        "number": "2",
        "name": "E1",
        "type": "input",
        "description": "Device address input bit 1. Hard-wired to VCC or GND to set a bit of the I2C slave address. Internally pulled down to GND if left floating."
      },
      {
        "number": "3",
        "name": "E2",
        "type": "input",
        "description": "Device address input bit 2. Hard-wired to VCC or GND to set the upper bit of the I2C slave address. Internally pulled down to GND if left floating."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the power supply. Must be tied to system ground."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "Serial Data. Open-drain bidirectional I2C data line; requires an external pull-up to VCC. Data is latched on the rising edge of SCL and driven on the falling edge."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "Serial Clock. I2C clock input driven by the bus master; controls data transfer on SDA. Supports up to 400 kHz standard and 1 MHz high-speed rates."
      },
      {
        "number": "7",
        "name": "WP",
        "type": "input",
        "description": "Hardware Write Protection input. When tied to VCC the entire memory array (and identification page) is write-protected (device becomes read-only); when tied to GND writes are enabled. Internally pulled down to GND if left floating."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Device power supply, 1.7 V to 5.5 V. Standby current 1 uA max, read/write current 0.5 mA max."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2405210917_HGSEMI-AT24C02CMM-TR_C7432365.pdf",
        "pages": 27,
        "sha256": "0bf607f240ed128f",
        "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": "at24c02cmm.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3,
          0.95
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "847c4c5023fe1603fbd36900a5dcc4bd3901ba473f71d42c9a469f0236eaadf3",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "at24c02cmm-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          3,
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        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "5fc3a39fe8a11fadf03528c490e3a0531bf8f533d04c6f94262ba9eeb0d70af0",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "MSOP-8",
      "Category": "Memory",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "at24c02cmm"
  ],
  "discovery_pitch": "AT24C02CMM (HGSEMI) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "at24c02cmm.kicad_sym",
    "at24c02cmm.kicad_mod",
    "at24c02cmm.glb",
    "at24c02cmm.step",
    "at24c02cmm-etched.step",
    "at24c02cmm.lbr",
    "docs/hero.png",
    "docs/at24c02cmm-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:02:56.991Z"
}