LK8563S

{
  "schema_version": 1,
  "type": "component",
  "slug": "lk8563s",
  "title": "LK8563S",
  "brief": "LANKE Real-time Clocks (RTC), MSOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "rtc",
    "lk8563s"
  ],
  "component": {
    "mpn": "LK8563S",
    "manufacturer": "LANKE",
    "package": "MSOP-8",
    "pin_count": 8,
    "category": "RTC",
    "subcategory": "Real-time Clocks (RTC)",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2303281100_LANKE-LK8563S_C5440210.pdf",
    "parts": {
      "symbol": "lk8563s.kicad_sym",
      "footprint": "lk8563s.kicad_mod",
      "model_3d": "lk8563s-etched.glb",
      "model_3d_plain": "lk8563s.glb",
      "model_3d_step": "lk8563s-etched.step",
      "model_3d_step_plain": "lk8563s.step",
      "lbr": "lk8563s.lbr"
    },
    "distributor_links": {
      "lcsc": "C5440210"
    },
    "pins": [
      {
        "number": "1",
        "name": "OSCI",
        "type": "input",
        "description": "Oscillator input. Connects to one terminal of the external 32.768 kHz crystal. Internal load capacitance (C_INT) typ. 25 pF; recommended crystal Rs <= 40 kOhm, C_L = 12.5 pF."
      },
      {
        "number": "2",
        "name": "OSCO",
        "type": "output",
        "description": "Oscillator output. Connects to the other terminal of the external 32.768 kHz crystal to form the RTC time base."
      },
      {
        "number": "3",
        "name": "/INT",
        "type": "output",
        "description": "Active-low interrupt output, open-drain. Asserted by alarm, timer, or brown-out events; requires an external pull-up resistor to VDD."
      },
      {
        "number": "4",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference (0 V)."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C serial data line (open-drain). Requires an external pull-up resistor (typ. 4.7 kOhm) to VDD. Slave address 0xA2 (write) / 0xA3 (read); up to 400 kbit/s."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "I2C serial clock input. Requires an external pull-up resistor (typ. 4.7 kOhm) to VDD. Max clock 400 kHz."
      },
      {
        "number": "7",
        "name": "CLKOUT",
        "type": "output",
        "description": "Programmable clock output, open-drain. Software-selectable frequencies: 32.768 kHz, 1024 Hz, 32 Hz, or 1 Hz. Requires an external pull-up resistor to VDD."
      },
      {
        "number": "8",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply. Operating range 1.2 V to 5.5 V for timekeeping; 1.8 V to 5.5 V for I2C at 400 kHz. Absolute maximum 6.5 V."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2303281100_LANKE-LK8563S_C5440210.pdf",
        "pages": 17,
        "sha256": "19c5303412fc54b3",
        "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.1125,
        -0.975
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "MSOP-8_3x3mm_P0.65mm@sha256:c85207be7edf4b5e",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "lk8563s.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3,
          0.95
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "847c4c5023fe1603fbd36900a5dcc4bd3901ba473f71d42c9a469f0236eaadf3",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lk8563s-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3,
          0.95
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "a7682c82341d0d72d229fa50edea2e79dbfe26748afa0cbcac2ca9ab3e513b33",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "LANKE",
      "Package": "MSOP-8",
      "Category": "RTC",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lk8563s"
  ],
  "discovery_pitch": "LK8563S (LANKE) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lk8563s.kicad_sym",
    "lk8563s.kicad_mod",
    "lk8563s.glb",
    "lk8563s.step",
    "lk8563s-etched.step",
    "lk8563s.lbr",
    "docs/hero.png",
    "docs/lk8563s-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T23:59:49.926Z"
}