BL24C256A-PARC

{
  "schema_version": 1,
  "type": "component",
  "slug": "bl24c256a-parc",
  "title": "BL24C256A-PARC",
  "brief": "BL Shanghai Belling 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",
    "bl24c256a-parc"
  ],
  "component": {
    "mpn": "BL24C256A-PARC",
    "manufacturer": "BL Shanghai Belling",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Memory",
    "subcategory": "EEPROM",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/afcc56653b434d93b0fcd5b34fff8319.pdf",
    "parts": {
      "symbol": "bl24c256a-parc.kicad_sym",
      "footprint": "bl24c256a-parc.kicad_mod",
      "model_3d": "bl24c256a-parc-etched.glb",
      "model_3d_plain": "bl24c256a-parc.glb",
      "model_3d_step": "bl24c256a-parc-etched.step",
      "model_3d_step_plain": "bl24c256a-parc.step",
      "lbr": "bl24c256a-parc.lbr"
    },
    "distributor_links": {
      "lcsc": "C90485"
    },
    "pins": [
      {
        "number": "1",
        "name": "A0",
        "type": "input",
        "description": "Device address input bit 0. Hardwired to VCC or GND to select one of eight device addresses on the I2C bus. Internal proprietary bias pulls the pin to a logic low if left floating."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "Device address input bit 1. Hardwired to VCC or GND to select one of eight device addresses on the I2C bus. Internal proprietary bias pulls the pin to a logic low if left floating."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "input",
        "description": "Device address input bit 2. Hardwired to VCC or GND to select one of eight device addresses on the I2C bus. Internal proprietary bias pulls the pin to a logic low if left floating."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C serial data line. Open-drain bidirectional pin for serial data transfer; requires an external pull-up resistor to VCC. May be wire-ORed with other open-drain devices on the bus."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "I2C serial clock input. Data is clocked into the EEPROM on the positive edge and clocked out on the negative edge. Supports up to 1 MHz at VCC >= 2.5 V (400 kHz at 1.7-2.5 V)."
      },
      {
        "number": "7",
        "name": "WP",
        "type": "input",
        "description": "Write Protect. Tie to GND for normal read/write operation. When tied to VCC, the entire 256 Kbit memory array becomes write-protected (hardware data protection)."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage, 1.7 V to 5.5 V (2.5 V to 5.5 V for full 1 MHz operation). Typical read current 0.14 mA, write current 0.28 mA at VCC=5.0 V/400 kHz."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/afcc56653b434d93b0fcd5b34fff8319.pdf",
        "pages": 16,
        "sha256": "5909eda557ab1e85",
        "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": "bl24c256a-parc.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": "bl24c256a-parc-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": "b79fe650481b47b46b9f44c96242ca85ed205997330dac69fc7f69b68c5d29fd",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "BL Shanghai Belling",
      "Package": "SOP-8",
      "Category": "Memory",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bl24c256a-parc"
  ],
  "discovery_pitch": "BL24C256A-PARC (BL Shanghai Belling) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bl24c256a-parc.kicad_sym",
    "bl24c256a-parc.kicad_mod",
    "bl24c256a-parc.glb",
    "bl24c256a-parc.step",
    "bl24c256a-parc-etched.step",
    "bl24c256a-parc.lbr",
    "docs/hero.png",
    "docs/bl24c256a-parc-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:49:01.727Z"
}