M24C64

{
  "schema_version": 1,
  "type": "component",
  "slug": "m24c64",
  "title": "M24C64",
  "brief": "ST 64 Kbit (8 KB) I2C serial EEPROM, SO-8. 1 MHz bus, 3 address pins, write control, 1.7-5.5 V. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "memory",
    "eeprom",
    "i2c",
    "non-volatile",
    "so-8",
    "stmicroelectronics"
  ],
  "component": {
    "mpn": "M24C64",
    "manufacturer": "STMicroelectronics",
    "package": "SO-8",
    "pin_count": 8,
    "category": "Memory",
    "subcategory": "64 Kbit I2C EEPROM",
    "datasheet": "https://www.st.com/resource/en/datasheet/m24c64-df.pdf",
    "parts": {
      "symbol": "m24c64.kicad_sym",
      "footprint": "m24c64.kicad_mod",
      "model_3d": "m24c64-etched.glb",
      "model_3d_plain": "m24c64.glb",
      "lbr": "m24c64.lbr",
      "model_3d_step": "m24c64-etched.step",
      "model_3d_step_plain": "m24c64.step"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "E0",
        "type": "input",
        "description": "Chip enable address input bit 0. Tied to VCC or VSS to set b1 of the 7-bit I2C device select code. Left floating reads as 0."
      },
      {
        "number": "2",
        "name": "E1",
        "type": "input",
        "description": "Chip enable address input bit 1. Tied to VCC or VSS to set b2 of the 7-bit I2C device select code. Left floating reads as 0."
      },
      {
        "number": "3",
        "name": "E2",
        "type": "input",
        "description": "Chip enable address input bit 2. Tied to VCC or VSS to set b3 of the 7-bit I2C device select code. Left floating reads as 0."
      },
      {
        "number": "4",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for all signals, including VCC supply voltage."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C serial data. Open-drain bidirectional line for address, data and acknowledge transfers. Requires an external pull-up resistor to VCC."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "I2C serial clock input. Strobes data in on SDA and clocks data out on SDA. Supports 100 kHz, 400 kHz, and 1 MHz bus speeds."
      },
      {
        "number": "7",
        "name": "WC",
        "type": "input",
        "description": "Write control, active low. When driven high, all write operations to the memory array are disabled (device ACKs the device-select and address bytes but not data bytes). Low or floating enables writes."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage. 1.7 V to 5.5 V for M24C64-F/DF (down to 1.6 V under restricting conditions), 1.8 V to 5.5 V for M24C64-R, 2.5 V to 5.5 V for M24C64-W. Recommend 10 nF to 100 nF decoupling to VSS close to the pin."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.st.com/resource/en/datasheet/m24c64-df.pdf",
        "pages": 50,
        "sha256": "c95123bad692fd89",
        "source_tier": "mfr"
      },
      "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": "m24c64.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "m24c64-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "0d2e45414da9393a28dd2a4921a6de108aebc72eff7407579881ea8743536a19",
        "checked": "2026-11-03",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Type": "Serial EEPROM (non-volatile)",
      "Density": "64 Kbit (8 KB)",
      "Interface": "I2C up to 1 MHz",
      "Write": "32-byte page",
      "Endurance": "1,000,000+ cycles",
      "Retention": ">200 years",
      "Addressing": "E0-E2 (8 per bus) + WC protect",
      "Supply voltage": "1.7-5.5 V",
      "Package": "SO-8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "m24c64",
    "i2c eeprom",
    "64kbit eeprom",
    "8kb eeprom",
    "serial eeprom st"
  ],
  "discovery_pitch": "M24C64 64 Kbit I2C serial EEPROM (SO-8) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "m24c64.kicad_sym",
    "m24c64.kicad_mod",
    "m24c64.glb",
    "m24c64.lbr",
    "docs/hero.png",
    "docs/m24c64-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "m24c64-etched.step"
  ],
  "variants": [
    {
      "mpn": "M24C64-DFMN6TP (SO-8)",
      "kind": "packaging"
    },
    {
      "mpn": "M24C64-RMN6TP (SO-8)",
      "kind": "packaging"
    }
  ]
}