BL25CM1A-PARC

{
  "schema_version": 1,
  "type": "component",
  "slug": "bl25cm1a-parc",
  "title": "BL25CM1A-PARC",
  "brief": "BL Shanghai Belling EEPROM, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "memory",
    "bl25cm1a-parc"
  ],
  "component": {
    "mpn": "BL25CM1A-PARC",
    "manufacturer": "BL Shanghai Belling",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Memory",
    "subcategory": "EEPROM",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2201130930_BL-Shanghai-Belling-BL25CM1A-PARC_C2943349.pdf",
    "parts": {
      "symbol": "bl25cm1a-parc.kicad_sym",
      "footprint": "bl25cm1a-parc.kicad_mod",
      "model_3d": "bl25cm1a-parc-etched.glb",
      "model_3d_plain": "bl25cm1a-parc.glb",
      "model_3d_step": "bl25cm1a-parc-etched.step",
      "model_3d_step_plain": "bl25cm1a-parc.step",
      "lbr": "bl25cm1a-parc.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "/CS",
        "type": "input",
        "description": "SPI Chip Select, active low. When /CS is high, the device is deselected and SO is placed at high impedance; power consumption drops to standby unless an internal write cycle is in progress. Driving /CS low selects the device so that instructions can be clocked in on SI. After power-up, /CS must transition high to low before a new instruction is accepted."
      },
      {
        "number": "2",
        "name": "SO",
        "type": "output",
        "description": "SPI Serial Data Output. Data or status is shifted out of this pin on the falling edge of SCK. SO is placed at high impedance when the device is deselected (/CS high) or when /HOLD is asserted low."
      },
      {
        "number": "3",
        "name": "/WP",
        "type": "input",
        "description": "Write Protect, active low. Used together with the Status Register Write Disable (SRWD) bit to enable the Hardware Protected mode: when SRWD = 1 and /WP is driven low, writes to the Status Register and to block-protected memory are inhibited. Tie high to disable hardware write protection."
      },
      {
        "number": "4",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for supply and all signals. Connect to the system ground plane."
      },
      {
        "number": "5",
        "name": "SI",
        "type": "input",
        "description": "SPI Serial Data Input. Instructions, addresses and write data are clocked into the device on the rising edge of SCK."
      },
      {
        "number": "6",
        "name": "SCK",
        "type": "input",
        "description": "SPI Serial Clock Input. Provides the timing for serial input and output operations; SI is sampled on the rising edge and SO changes on the falling edge. Supports SPI modes (0,0) and (1,1); maximum frequency is 2 MHz for BL25CM1A and 5 MHz for BL25CM1A5."
      },
      {
        "number": "7",
        "name": "/HOLD",
        "type": "input",
        "description": "Hold input, active low. Pausing the device while it is actively selected: when /HOLD is low while /CS is also low, SO is placed at high impedance and signals on SI and SCK are ignored (don't care). Driving /HOLD high resumes device operation. Useful when multiple devices share the SPI bus; tie high if unused."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply, 2.8 V to 5.5 V. Decouple to VSS with a local bypass capacitor (typically 100 nF) close to the pin."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2201130930_BL-Shanghai-Belling-BL25CM1A-PARC_C2943349.pdf",
        "pages": 21,
        "sha256": "ff7e0e771d288dc6",
        "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"
    },
    "models_3d": [
      {
        "file": "bl25cm1a-parc.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": "bl25cm1a-parc-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": "621f6486c86099fb6b906397f56e91c26bc63de45ebb75bb7a2546a1d801ad9f",
        "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"
    }
  },
  "variants": [
    {
      "mpn": "BL25CM1A-PARC",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bl25cm1a-parc"
  ],
  "discovery_pitch": "BL25CM1A-PARC (BL Shanghai Belling) 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",
    "bl25cm1a-parc.kicad_sym",
    "bl25cm1a-parc.kicad_mod",
    "bl25cm1a-parc.glb",
    "bl25cm1a-parc.step",
    "bl25cm1a-parc.lbr",
    "docs/hero.png",
    "docs/bl25cm1a-parc-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:49:49.840Z"
}