AT24C128M

{
  "schema_version": 1,
  "type": "component",
  "slug": "at24c128m",
  "title": "AT24C128M",
  "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",
    "at24c128m"
  ],
  "component": {
    "mpn": "AT24C128M",
    "manufacturer": "HGSEMI",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Memory",
    "subcategory": "EEPROM",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/ee4fcf84653c877f5c053dcbaed72642.pdf",
    "parts": {
      "symbol": "at24c128m.kicad_sym",
      "footprint": "at24c128m.kicad_mod",
      "model_3d": "at24c128m-etched.glb",
      "model_3d_plain": "at24c128m.glb",
      "model_3d_step": "at24c128m-etched.step",
      "model_3d_step_plain": "at24c128m.step",
      "lbr": "at24c128m.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "E0",
        "type": "input",
        "description": "Slave address bit A0 input. Hardware address pin used with E1/E2 to select one of eight devices on the same I2C bus. Internally pulled down to Vss if left floating."
      },
      {
        "number": "2",
        "name": "E1",
        "type": "input",
        "description": "Slave address bit A1 input. Hardware address pin used with E0/E2 to select one of eight devices on the same I2C bus. Internally pulled down to Vss if left floating."
      },
      {
        "number": "3",
        "name": "E2",
        "type": "input",
        "description": "Slave address bit A2 input. Hardware address pin used with E0/E1 to select one of eight devices on the same I2C bus. Internally pulled down to Vss if left floating."
      },
      {
        "number": "4",
        "name": "Vss",
        "type": "power_in",
        "description": "Ground reference for Vcc supply. 0 V rail."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C serial data (open-drain). Bidirectional data line for read/write transfers; requires an external pull-up resistor to Vcc (typ. 1.3 kΩ at 2.5-5.5 V, 10 kΩ at 1.7 V). Can be wire-OR'd with other open-drain devices."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "I2C serial clock input. Positive edge clocks data in on SDA; negative edge clocks data out. Supports up to 400 kHz (Vcc ≥ 1.7 V) or 1 MHz (Vcc ≥ 1.7 V per AC characteristics)."
      },
      {
        "number": "7",
        "name": "WCB",
        "type": "input",
        "description": "Write Control input (active-low write enable). Tie to Vss to allow normal write operations; tie to Vcc to inhibit all writes to the memory array. Internally pulled down to Vss if left floating."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage. Operating range 1.7 V to 5.5 V. Read Icc typ. 0.2 mA and write Icc typ. 0.8 mA at 400 kHz."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/ee4fcf84653c877f5c053dcbaed72642.pdf",
        "pages": 19,
        "sha256": "ade6fc1683c10678",
        "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"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "SOP-8",
      "Category": "Memory",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "at24c128m"
  ],
  "discovery_pitch": "AT24C128M (HGSEMI) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "at24c128m.kicad_sym",
    "at24c128m.kicad_mod",
    "at24c128m.glb",
    "at24c128m.step",
    "at24c128m-etched.step",
    "at24c128m.lbr",
    "docs/hero.png",
    "docs/at24c128m-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:06:07.576Z"
}