DS1307MM

{
  "slug": "ds1307mm",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI Real Time Clocks, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "clock-timing",
    "ds1307mm",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ds1307mm.kicad_sym",
    "ds1307mm.kicad_mod",
    "ds1307mm.glb",
    "ds1307mm.step",
    "ds1307mm.lbr",
    "docs/hero.png",
    "docs/ds1307mm-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ds1307mm-hero.glb",
    "ds1307mm-hero.overlay.json",
    "ds1307mm-etched.glb"
  ],
  "component": {
    "mpn": "DS1307MM",
    "manufacturer": "HGSEMI",
    "package": "MSOP-8",
    "pin_count": 8,
    "category": "Clock/Timing",
    "subcategory": "Real Time Clocks",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756372542519160832",
    "parts": {
      "symbol": "ds1307mm.kicad_sym",
      "footprint": "ds1307mm.kicad_mod",
      "model_3d": "ds1307mm-hero.glb",
      "model_3d_plain": "ds1307mm-etched.glb",
      "model_3d_step": "ds1307mm-etched.step",
      "model_3d_step_plain": "ds1307mm.step",
      "lbr": "ds1307mm.lbr"
    },
    "distributor_links": {
      "lcsc": "C20618051"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T12:28:35Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "X1",
        "type": "passive",
        "description": "32.768 kHz crystal pin; the datasheet specifies a crystal load capacitance (CL) of 12.5 pF, and when the device is driven by an external 32.768 kHz oscillator, this pin is the oscillator input."
      },
      {
        "number": "2",
        "name": "X2",
        "type": "passive",
        "description": "32.768 kHz crystal pin; it is left floating when the device is driven by an external 32.768 kHz oscillator on X1."
      },
      {
        "number": "3",
        "name": "VBAT",
        "type": "power_in",
        "description": "+3V lithium battery or other battery input that must be held between 2.0 V and 3.5 V for proper operation, and it keeps the RTC and RAM powered when VCC falls below VBAT."
      },
      {
        "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; it is an open-drain pin that requires an external pull-up resistor."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "Serial clock input of the I2C interface; it is an open-drain pin that requires an external pull-up resistor."
      },
      {
        "number": "7",
        "name": "SQW/OUT",
        "type": "output",
        "description": "Square-wave output driver (1 Hz, 4.096 kHz, 8.192 kHz or 32.768 kHz when SQWE=1) or a static output level controlled by the OUT bit when square-wave output is disabled; it is an open-drain pin that requires an external pull-up resistor."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply input of +5 V; the datasheet specifies VCC from 4.5 V to 5.5 V."
      }
    ],
    "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 table on page 2 is shared by DIP-8, SOP-8 and MSOP-8 and gives one pinout; the MSOP-8 ordera; KiCad types for X1/X2 (passive, since they are a crystal but can also be driven by an external oscil; The VCC voltage range quoted in the pin description (4.5 V to 5.5 V) comes from the recommended DC o"
        ],
        "pages_sent": 14,
        "cost_usd": 0.059,
        "at": "2026-10-18T12:26:28"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756372542519160832",
        "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": "ds1307mm.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3.0,
          0.95
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "847c4c5023fe1603fbd36900a5dcc4bd3901ba473f71d42c9a469f0236eaadf3",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ds1307mm-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3.0,
          0.95
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "778224fc79665c4a017731ed627f338bb367ba4997a19d12328310aed41c2e53",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}