HG1302N

{
  "slug": "hg1302n",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI Real Time Clocks, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "clock-timing",
    "hg1302n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "hg1302n.kicad_sym",
    "hg1302n.kicad_mod",
    "hg1302n.glb",
    "hg1302n.step",
    "hg1302n.lbr",
    "docs/hero.png",
    "docs/hg1302n-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "hg1302n-hero.glb",
    "hg1302n-hero.overlay.json",
    "hg1302n-etched.glb"
  ],
  "component": {
    "mpn": "HG1302N",
    "manufacturer": "HGSEMI",
    "package": "DIP-8",
    "pin_count": 8,
    "category": "Clock/Timing",
    "subcategory": "Real Time Clocks",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603087734726803456",
    "parts": {
      "symbol": "hg1302n.kicad_sym",
      "footprint": "hg1302n.kicad_mod",
      "model_3d": "hg1302n-hero.glb",
      "model_3d_plain": "hg1302n-etched.glb",
      "model_3d_step": "hg1302n-etched.step",
      "model_3d_step_plain": "hg1302n.step",
      "lbr": "hg1302n.lbr"
    },
    "distributor_links": {
      "lcsc": "C5310746"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T16:47:14Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VCC2",
        "type": "power_in",
        "description": "Main supply pin for the dual-supply system; the HG1302 is powered from VCC2 when VCC2 exceeds VCC1 by more than 0.2V, and the recommended supply range is 2.0V to 5.5V."
      },
      {
        "number": "2",
        "name": "X1",
        "type": "passive",
        "description": "Connection for the 32.768kHz crystal, which should be selected for a load capacitance (CL) of 6pF."
      },
      {
        "number": "3",
        "name": "X2",
        "type": "passive",
        "description": "Connection for the 32.768kHz crystal, which should be selected for a load capacitance (CL) of 6pF."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "5",
        "name": "RST",
        "type": "input",
        "description": "Reset/enable input that must be driven high to start any data transfer, and driving it low aborts the transfer and forces I/O to high impedance; RST must be logic 0 until VCC is at least 2.5V at power-up, and SCLK must be logic 0 when RST is driven high."
      },
      {
        "number": "6",
        "name": "I/O",
        "type": "bidirectional",
        "description": "Serial data input/output line; write data is sampled on the SCLK rising edge and read data is output on the falling edge, and the pin is tri-stated when RST is low."
      },
      {
        "number": "7",
        "name": "SCLK",
        "type": "input",
        "description": "Serial clock input that synchronizes command, write and read transfers on the 3-wire interface."
      },
      {
        "number": "8",
        "name": "VCC1",
        "type": "power_in",
        "description": "Backup supply pin for battery or supercapacitor backup of the clock and RAM; the device is powered from VCC1 when VCC2 is not greater than VCC1 by 0.2V, and the recommended supply range is 2.0V to 5.5V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin-function table on page 2 covers DIP8, SOP8 and MSOP8 together, and the pin-diagram image (DI; Ordering table lists HG1302N (commercial 0 to 70 C) and HG1302ZN (industrial -40 to +85 C) both in D; Supply range 2.0V to 5.5V is taken from the recommended operating conditions on page 3 and applies t"
        ],
        "pages_sent": 14,
        "cost_usd": 0.0501,
        "at": "2026-10-18T16:45:09"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603087734726803456",
        "pages": 14,
        "sha256": "313dc8a655711ee6",
        "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": "hg1302n.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "4a377a56a8d9e9c0b86c095ef9ecc1869ac19e7f5069a3247b294250bf4f235d",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "hg1302n-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "0824db465fd97ae66ddb6df19b6ad2c3503e178ca9f0f20e90684adcc1aaf663",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}