AT24C64CM

{
  "schema_version": 1,
  "type": "component",
  "slug": "at24c64cm",
  "title": "AT24C64CM",
  "brief": "HGSEMI EEPROM, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "memory",
    "at24c64cm"
  ],
  "component": {
    "mpn": "AT24C64CM",
    "manufacturer": "HGSEMI",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Memory",
    "subcategory": "EEPROM",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/cd75e06b1df6d534209c329cdd0e62d6.pdf",
    "parts": {
      "symbol": "at24c64cm.kicad_sym",
      "footprint": "at24c64cm.kicad_mod",
      "model_3d": "at24c64cm-etched.glb",
      "model_3d_plain": "at24c64cm.glb",
      "model_3d_step": "at24c64cm-etched.step",
      "model_3d_step_plain": "at24c64cm.step",
      "lbr": "at24c64cm.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "E0",
        "type": "input",
        "description": "Device address input bit 0. Sets the LSB of the hard-wired I2C slave address, allowing up to eight AT24C64C devices to share a bus. Tie to VCC or GND; if left floating, an internal pull-down to GND is applied."
      },
      {
        "number": "2",
        "name": "E1",
        "type": "input",
        "description": "Device address input bit 1. Sets bit 1 of the hard-wired I2C slave address. Tie to VCC or GND; internally pulled down to GND if left floating."
      },
      {
        "number": "3",
        "name": "E2",
        "type": "input",
        "description": "Device address input bit 2 (MSB of the address select). Tie to VCC or GND; internally pulled down to GND if left floating."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the power supply. Must be connected to system ground."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C serial data. Open-drain bidirectional line for command, address, and data transfer. Requires an external pull-up resistor to VCC. Data is latched on the rising edge of SCL and driven on the falling edge."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "I2C serial clock input from the bus master. Controls flow of data into and out of the device; requires an external pull-up resistor to VCC. Supports up to 400 kHz Fast Mode and 1 MHz High-Speed Mode."
      },
      {
        "number": "7",
        "name": "WP",
        "type": "input",
        "description": "Write Protect input. When tied to VCC, the entire memory array becomes read-only (write commands are NACKed on data bytes). 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; active read/write current 0.5 mA max. Bypass with a local decoupling capacitor to GND."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/cd75e06b1df6d534209c329cdd0e62d6.pdf",
        "pages": 24,
        "sha256": "47ba875d6f9c245f",
        "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "at24c64cm.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": "at24c64cm-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": "2793655bacab5565bfb7f814b0056487ae2b774be4ed2080c614b75f854be549",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "SOP-8",
      "Category": "Memory",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "at24c64cm"
  ],
  "discovery_pitch": "AT24C64CM (HGSEMI) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "at24c64cm.kicad_sym",
    "at24c64cm.kicad_mod",
    "at24c64cm.glb",
    "at24c64cm.step",
    "at24c64cm-etched.step",
    "at24c64cm.lbr",
    "docs/hero.png",
    "docs/at24c64cm-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:09:43.981Z"
}