BL5372 SOP8

{
  "schema_version": 1,
  "type": "component",
  "slug": "bl5372-sop8",
  "title": "BL5372 SOP8",
  "brief": "BL Shanghai Belling Real Time Clocks, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "clock-timing",
    "bl5372 sop8",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BL5372 SOP8",
    "manufacturer": "BL Shanghai Belling",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Clock/Timing",
    "subcategory": "Real Time Clocks",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603065455699640320",
    "parts": {
      "symbol": "bl5372-sop8.kicad_sym",
      "footprint": "bl5372-sop8.kicad_mod",
      "model_3d": "bl5372-sop8-etched.glb",
      "model_3d_plain": "bl5372-sop8.glb",
      "model_3d_step": "bl5372-sop8-etched.step",
      "model_3d_step_plain": "bl5372-sop8.step",
      "lbr": "bl5372-sop8.lbr"
    },
    "distributor_links": {
      "lcsc": "C7462443"
    },
    "pins": [
      {
        "number": "1",
        "name": "INTRB",
        "type": "output",
        "description": "Interrupt output B; open-drain output capable of 32.768kHz square wave, periodic interrupt pulses, or ALARM-B alarm signal; defaults to 32.768kHz square wave on power-up; requires external pull-up resistor."
      },
      {
        "number": "2",
        "name": "SCL",
        "type": "input",
        "description": "I2C serial clock input line; maximum data clock frequency 100kHz; requires external pull-up resistor."
      },
      {
        "number": "3",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C serial data bidirectional line for two-wire interface; input/output capability for data transfer; requires external pull-up resistor."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Power supply ground pin; must connect to system ground; requires bypass capacitor placement near pin."
      },
      {
        "number": "5",
        "name": "INTRA",
        "type": "output",
        "description": "Interrupt output A; open-drain output for periodic interrupt or alarm signals (ALARM-A, ALARM-B); requires external pull-up resistor."
      },
      {
        "number": "6",
        "name": "OSCOUT",
        "type": "output",
        "description": "Crystal oscillator output; connects to external 32.768kHz or 32kHz crystal oscillator with load capacitor for resonant circuit operation."
      },
      {
        "number": "7",
        "name": "OSCIN",
        "type": "input",
        "description": "Crystal oscillator input; connects to external 32.768kHz or 32kHz crystal; do not place load capacitor at input pin as it may cause crystal oscillation to stop; place capacitor only at OSCOUT."
      },
      {
        "number": "8",
        "name": "VDD",
        "type": "power_in",
        "description": "Operating power supply voltage; supply range 1.8V to 5.5V; typical working current 0.4µA at 3.6V and 25°C; requires bypass capacitor."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-4-6",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin numbering discrepancy: The pinout diagram on PAGE 2 appears to show a different pin-to-signal as"
        ],
        "pages_sent": 32,
        "cost_usd": 0.2859,
        "at": "2026-09-22T07:50:23"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603065455699640320",
        "pages": 32,
        "sha256": "a9ad06341198c55e",
        "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": "bl5372-sop8.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": "bl5372-sop8-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": "4f1c51417c6a42279b95db6e1a20d4d0385b3dffa735f9fd4cd3dead1918f2c2",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "BL Shanghai Belling",
      "Package": "SOP-8",
      "Category": "Clock/Timing",
      "Pins": "8"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bl5372 sop8"
  ],
  "discovery_pitch": "BL5372 SOP8 (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",
    "bl5372-sop8.kicad_sym",
    "bl5372-sop8.kicad_mod",
    "bl5372-sop8.glb",
    "bl5372-sop8.step",
    "bl5372-sop8.lbr",
    "docs/hero.png",
    "docs/bl5372-sop8-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:50:45.079Z"
}