AT24C128C-SSHM-T

{
  "schema_version": 1,
  "type": "component",
  "slug": "at24c128c-sshm-t",
  "title": "AT24C128C-SSHM-T",
  "brief": "Microchip EEPROM, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "memory",
    "at24c128c-sshm-t"
  ],
  "component": {
    "mpn": "AT24C128C-SSHM-T",
    "manufacturer": "Microchip",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Memory",
    "subcategory": "EEPROM",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/f13e612f7dcab743e98974c7a56dd207.pdf",
    "parts": {
      "symbol": "at24c128c-sshm-t.kicad_sym",
      "footprint": "at24c128c-sshm-t.kicad_mod",
      "model_3d": "at24c128c-sshm-t-etched.glb",
      "model_3d_plain": "at24c128c-sshm-t.glb",
      "model_3d_step": "at24c128c-sshm-t-etched.step",
      "model_3d_step_plain": "at24c128c-sshm-t.step",
      "lbr": "at24c128c-sshm-t.lbr"
    },
    "distributor_links": {
      "digikey": "150-AT24C128C-SSHM-TTR-ND",
      "lcsc": "C6478"
    },
    "pins": [
      {
        "number": "1",
        "name": "A0",
        "type": "input",
        "description": "Device address input, bit 0. Hard-wired to GND or VCC to set the chip's I²C slave address, allowing up to eight AT24C128C devices on one bus. Internally pulled to GND via a weak pull-down (disengages above ~0.5×VCC); Microchip recommends tying to a known state. External pull-up (if used) should be ≤10 kΩ."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "Device address input, bit 1. Hard-wired to GND or VCC to select the I²C slave address. Internally pulled down to GND when floating; tie to a known state. External pull-up ≤10 kΩ recommended."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "input",
        "description": "Device address input, bit 2. Hard-wired to GND or VCC to select the I²C slave address. Internally pulled down to GND when floating; tie to a known state. External pull-up ≤10 kΩ recommended."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the power supply. Connect to the system ground plane."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I²C serial data - open-drain bidirectional input/output. Requires an external pull-up resistor to VCC (≤10 kΩ). May be wire-ORed with other open-drain devices on the same I²C bus."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "I²C serial clock input. Commands and input data on SDA are latched on the rising edge of SCL; output data on SDA is clocked out on the falling edge. Must be driven high or pulled up externally when the bus is idle."
      },
      {
        "number": "7",
        "name": "WP",
        "type": "input",
        "description": "Hardware write-protect input. Tie to GND for normal read/write operation; tie to VCC to inhibit all write operations to the entire memory array. Internally pulled down to GND when floating; tie to a known state."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Device power supply, 1.7V to 5.5V (2.5V to 5.5V required for 1 MHz Fast Mode Plus operation). Active current 3 mA max; standby current 6 µA max. Decouple with a local ceramic capacitor."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/f13e612f7dcab743e98974c7a56dd207.pdf",
        "pages": 39,
        "sha256": "d583c8741b257ee2",
        "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"
    },
    "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": "at24c128c-sshm-t.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": "at24c128c-sshm-t-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": "dd6e5c1591f07bb06adf78240388340436b23170a5cac83638536d97447d8840",
        "checked": "2026-11-03",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip",
      "Package": "SOIC-8",
      "Category": "Memory",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "at24c128c-sshm-t"
  ],
  "discovery_pitch": "AT24C128C-SSHM-T (Microchip) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "at24c128c-sshm-t.kicad_sym",
    "at24c128c-sshm-t.kicad_mod",
    "at24c128c-sshm-t.glb",
    "at24c128c-sshm-t.step",
    "at24c128c-sshm-t-etched.step",
    "at24c128c-sshm-t.lbr",
    "docs/hero.png",
    "docs/at24c128c-sshm-t-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:05:59.010Z"
}