FRTC1337S

{
  "schema_version": 1,
  "type": "component",
  "slug": "frtc1337s",
  "title": "FRTC1337S",
  "brief": "Nyfea 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",
    "frtc1337s",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "FRTC1337S",
    "manufacturer": "Nyfea",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Clock/Timing",
    "subcategory": "Real Time Clocks",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/9abe1e9a2299c8c48aa1c6918a32e576.pdf",
    "parts": {
      "symbol": "frtc1337s.kicad_sym",
      "footprint": "frtc1337s.kicad_mod",
      "model_3d": "frtc1337s-hero.glb",
      "model_3d_plain": "frtc1337s-etched.glb",
      "model_3d_step": "frtc1337s-etched.step",
      "model_3d_step_plain": "frtc1337s.step",
      "lbr": "frtc1337s.lbr"
    },
    "distributor_links": {
      "lcsc": "C42413383"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T20:53:33Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "X1",
        "type": "input",
        "description": "Oscillator circuit input; the 32.768 kHz crystal is connected between X1 and X2, or X1 can be driven as an external clock input."
      },
      {
        "number": "2",
        "name": "X2",
        "type": "output",
        "description": "Oscillator circuit output; together with X1 it connects the 32.768 kHz crystal, and X2 must be left floating when an external 32.768 kHz input is used."
      },
      {
        "number": "3",
        "name": "INTA",
        "type": "output",
        "description": "Interrupt output that is asserted low when the time matches the alarm registers and the alarm is enabled; open-drain, requires an external pull-up resistor."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "Serial data input/output for the 2-wire I2C interface; open-drain output that requires an external pull-up resistor."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "Serial clock input that synchronizes data movement on the I2C interface, with a maximum clock frequency of 400 kHz."
      },
      {
        "number": "7",
        "name": "SQW/INTB",
        "type": "output",
        "description": "Programmable square-wave or interrupt output; open-drain, requires an external pull-up resistor."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply pin; operating range 1.8 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-configuration drawing text on page 4 is garbled; the pin numbers and functions were taken fr; The datasheet uses type 'P' for VCC and GND; mapped to KiCad power_in per the instruction. Pin 2 (X2"
        ],
        "pages_sent": 21,
        "cost_usd": 0.0672,
        "at": "2026-10-18T20:51:44"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/9abe1e9a2299c8c48aa1c6918a32e576.pdf",
        "pages": 21,
        "sha256": "9c177ca8874005cf",
        "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": "frtc1337s.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "frtc1337s-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "14d5405eef50b5445c431bb3be511eabae8ae0b7c9963907006dc662d1e7b53a",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Nyfea",
      "Package": "SOP-8",
      "Category": "Clock/Timing",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "9c177ca8874005cf5f0df825540c06f053d121863d775f4a6c586b32c8ff5608",
      "rows": [
        {
          "name": "Power voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.8,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Oscillator voltage",
          "symbol": "VOSC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.7,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Input high level (INTA, SQW/INTB)",
          "symbol": "VIH",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Input low level",
          "symbol": "VIL",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "ºC",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Ambient temperature with power applied",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage to ground potential (Vcc to GND)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6.5,
          "conditions": "",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "DC input (all other inputs except Vcc and GND)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "DC output voltage (SDA, /INT pins)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6.5,
          "conditions": "",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 320,
          "conditions": "Depend on package",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "electrical",
          "unit": "V",
          "min": 1.8,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Oscillator voltage",
          "symbol": "VOSC",
          "kind": "electrical",
          "unit": "V",
          "min": 1.7,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Active supply current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "Note 1, 5: SCL clocking at max frequency 400kHz, VIL=0.0V, VIH=VCC; recommended crystal on X1 and X2",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Standby current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.5,
          "max": 0.8,
          "conditions": "Note 2, 3, 5: 2-wire bus inactive, VIL=0.0V, VIH=VCC; SQW enabled; recommended crystal on X1 and X2",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Timekeeping current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 350,
          "max": 600,
          "conditions": "Note 2, 4, 5: 2-wire bus inactive, VIL=0.0V, VIH=VCC; SQW function disabled (INTCN=1); recommended crystal on X1 and X2",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Data retention current",
          "symbol": "",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "Note 2, 6: 2-wire bus inactive, VIL=0.0V, VIH=VCC; crystal oscillator disabled",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Low-level input voltage SCL",
          "symbol": "VIL1",
          "kind": "electrical",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Low-level output current SDA, INTA, INTB",
          "symbol": "IOL",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "VOL = 0.4V",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current SCL",
          "symbol": "IIL",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Output current when OFF SDA, INTA, INTB",
          "symbol": "IOZ",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "SCL clock frequency",
          "symbol": "fSCL",
          "kind": "timing",
          "unit": "kHz",
          "min": null,
          "typ": null,
          "max": 400,
          "conditions": "",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "START condition set-up time",
          "symbol": "tSU; STA",
          "kind": "timing",
          "unit": "us",
          "min": 0.6,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "START condition hold time",
          "symbol": "tHD; STA",
          "kind": "timing",
          "unit": "us",
          "min": 0.6,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Data set-up time (RTC read/write)",
          "symbol": "tSU; DAT",
          "kind": "timing",
          "unit": "ns",
          "min": 200,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Data hold time (RTC write)",
          "symbol": "tHD;DAT1",
          "kind": "timing",
          "unit": "ns",
          "min": 35,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Data hold time (RTC read)",
          "symbol": "tHD;DAT2",
          "kind": "timing",
          "unit": "us",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "STOP condition set-up time",
          "symbol": "tSU; STO",
          "kind": "timing",
          "unit": "us",
          "min": 0.6,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Bus idle time between START and STOP condition",
          "symbol": "tBUF",
          "kind": "timing",
          "unit": "us",
          "min": 1.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "SCL low period",
          "symbol": "tLOW",
          "kind": "timing",
          "unit": "us",
          "min": 1.3,
          "typ": null,
          "max": null,
          "conditions": "When SCL = L",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "SCL high period",
          "symbol": "tHIGH",
          "kind": "timing",
          "unit": "us",
          "min": 0.6,
          "typ": null,
          "max": null,
          "conditions": "When SCL = H",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Rise time for SCL and SDA",
          "symbol": "tr",
          "kind": "timing",
          "unit": "us",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Fall time for SCL and SDA",
          "symbol": "tf",
          "kind": "timing",
          "unit": "us",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Allowable spike time on bus",
          "symbol": "tSP",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Capacitance load for each bus line",
          "symbol": "CB",
          "kind": "timing",
          "unit": "pF",
          "min": null,
          "typ": null,
          "max": 400,
          "conditions": "",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Built-in capacitance CX1, CX2",
          "symbol": "CX1, CX2",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 12,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "frtc1337s"
  ],
  "discovery_pitch": "FRTC1337S (Nyfea) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "frtc1337s.kicad_sym",
    "frtc1337s.kicad_mod",
    "frtc1337s.glb",
    "frtc1337s.step",
    "frtc1337s.lbr",
    "docs/hero.png",
    "docs/frtc1337s-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "frtc1337s-hero.glb",
    "frtc1337s-hero.overlay.json",
    "frtc1337s-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}