DS1307ZN

{
  "slug": "ds1307zn",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI Real-time Clocks (RTC), DIP-8L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "clock and timing",
    "ds1307zn",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ds1307zn.kicad_sym",
    "ds1307zn.kicad_mod",
    "ds1307zn.glb",
    "ds1307zn.step",
    "ds1307zn.lbr",
    "docs/hero.png",
    "docs/ds1307zn-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ds1307zn-hero.glb",
    "ds1307zn-hero.overlay.json",
    "ds1307zn-etched.glb"
  ],
  "component": {
    "mpn": "DS1307ZN",
    "manufacturer": "HGSEMI",
    "package": "DIP-8L",
    "pin_count": 8,
    "category": "Clock and Timing",
    "subcategory": "Real-time Clocks (RTC)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/2023ca1c7582ee403862d0c5adda7f9c.pdf",
    "parts": {
      "symbol": "ds1307zn.kicad_sym",
      "footprint": "ds1307zn.kicad_mod",
      "model_3d": "ds1307zn-hero.glb",
      "model_3d_plain": "ds1307zn-etched.glb",
      "model_3d_step": "ds1307zn-etched.step",
      "model_3d_step_plain": "ds1307zn.step",
      "lbr": "ds1307zn.lbr"
    },
    "distributor_links": {
      "lcsc": "C910865",
      "mouser": "700-DS1307ZN-NR"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T00:18:12Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": "700-DS1307ZN-NR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "X1",
        "type": "passive",
        "description": "32.768 kHz crystal connection with a specified crystal load capacitance of 12.5 pF; X1 also accepts an external 32.768 kHz oscillator output."
      },
      {
        "number": "2",
        "name": "X2",
        "type": "passive",
        "description": "32.768 kHz crystal connection that is left floating when the device is driven by an external 32.768 kHz oscillator."
      },
      {
        "number": "3",
        "name": "VBAT",
        "type": "power_in",
        "description": "Standard 3 V lithium battery input that must be held between 2.0 V and 3.5 V for proper operation."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "Serial data input/output of the I2C interface; this open-drain pin requires an external pull-up resistor."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "Serial clock input of the I2C interface; this open-drain pin supports standard mode only at 100 kHz."
      },
      {
        "number": "7",
        "name": "SQW/OUT",
        "type": "output",
        "description": "Square-wave output (1 Hz, 4.096 kHz, 8.192 kHz or 32.768 kHz) when SQWE is set, otherwise a controlled logic level; this open-drain pin requires an external pull-up resistor."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Main supply input at +5 V nominal, specified over 4.5 V to 5.5 V; device access is disabled when VCC falls below 1.25×VBAT."
      }
    ],
    "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": null,
        "consensus": "skipped (clean text read)",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 14,
        "cost_usd": 0.0009,
        "at": "2026-10-27T00:17:52"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/2023ca1c7582ee403862d0c5adda7f9c.pdf",
        "pages": 14,
        "sha256": "99d95856b4d3f840",
        "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": "ds1307zn.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": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ds1307zn-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": "63671b515a37497e6d9970c7b701ac0fd14125d23fae10edce10b5508285ff8c",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}