FRTC8900S

{
  "schema_version": 1,
  "type": "component",
  "slug": "frtc8900s",
  "title": "FRTC8900S",
  "brief": "Nyfea Real Time Clocks, SOP-14. 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",
    "frtc8900s",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "FRTC8900S",
    "manufacturer": "Nyfea",
    "package": "SOP-14",
    "pin_count": 14,
    "category": "Clock/Timing",
    "subcategory": "Real Time Clocks",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/70964470e95086ac77a1c1fbd520e903.pdf",
    "parts": {
      "symbol": "frtc8900s.kicad_sym",
      "footprint": "frtc8900s.kicad_mod",
      "model_3d": "frtc8900s-hero.glb",
      "model_3d_plain": "frtc8900s-etched.glb",
      "model_3d_step": "frtc8900s-etched.step",
      "model_3d_step_plain": "frtc8900s.step",
      "lbr": "frtc8900s.lbr"
    },
    "distributor_links": {
      "lcsc": "C42413386"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T02:20:03Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "T1",
        "type": "input",
        "description": "Manufacturer test pin; the datasheet says not to connect it externally."
      },
      {
        "number": "2",
        "name": "SCL",
        "type": "input",
        "description": "Serial clock input for I2C bus communications."
      },
      {
        "number": "3",
        "name": "FOUT",
        "type": "output",
        "description": "C-MOS 32.768 kHz output controlled by FOE; it outputs 32.768 kHz when FOE is high (depending on the FSEL bit) and goes high-impedance (Hi-Z) when output is stopped."
      },
      {
        "number": "4",
        "name": "N.C.",
        "type": "unconnected",
        "description": "Not connected to the internal IC; leave open or connect to GND or VDD."
      },
      {
        "number": "5",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup battery supply, 1.6 V to 5.5 V (3.0 V typ.); connect to VDD if battery switchover is not needed, or to a large-capacity capacitor or secondary battery otherwise."
      },
      {
        "number": "6",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply for normal operation, 2.5 V to 5.5 V (3.0 V typ.)."
      },
      {
        "number": "7",
        "name": "FOE",
        "type": "input",
        "description": "Input that controls FOUT output mode: FOUT is enabled when FOE is high and output stops when FOE is low."
      },
      {
        "number": "8",
        "name": "N.C.",
        "type": "unconnected",
        "description": "Not connected to the internal IC; leave open or connect to GND or VDD."
      },
      {
        "number": "9",
        "name": "N.C.",
        "type": "unconnected",
        "description": "Not connected to the internal IC; leave open or connect to GND or VDD."
      },
      {
        "number": "10",
        "name": "/INT",
        "type": "output",
        "description": "Open-drain output that goes low to signal alarm, fixed-cycle timer, or time update interrupts; it is active only when the matching interrupt enable bit is set."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection."
      },
      {
        "number": "12",
        "name": "T2",
        "type": "input",
        "description": "Manufacturer test pin; the datasheet says not to connect it externally."
      },
      {
        "number": "13",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C serial data line (N-channel open drain during output) that needs a pull-up resistor suited to the signal-line capacitance."
      },
      {
        "number": "14",
        "name": "N.C.",
        "type": "unconnected",
        "description": "Not connected to the internal IC; leave open or connect to GND or VDD."
      }
    ],
    "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 SOP-14 column was read from garbled text extraction on page 3; the mapping of pin numbers to nam; The /INT pin's I/O type is printed as 'Input' in the pin table, but its description and the absolute; T1 and T2 are typed 'Input' in the datasheet table but are manufacturer test pins that must not be c"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0417,
        "at": "2026-10-19T02:19:48"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/70964470e95086ac77a1c1fbd520e903.pdf",
        "pages": 31,
        "sha256": "2a7da5dcf5cd5be1",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 14,
        "described": 14,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "frtc8900s.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          8.7,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3b9a775da256c8afcc28dcddfbc2eb3f266107fe61ce8446d96f2c52b6f44a70",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "frtc8900s-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          8.7,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "e9754bf8ca270a01cb903dc20ca86926c7afd3855ced00ca29d49b76c4f12d14",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Nyfea",
      "Package": "SOP-14",
      "Category": "Clock/Timing",
      "Pins": "14"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "2a7da5dcf5cd5be1ef29ecb268716e0297199ac6d1a1717156a59f53993f8ccd",
      "rows": [
        {
          "name": "Storage temperature",
          "symbol": "Tstore",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "DC supply voltage",
          "symbol": "VDD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Battery supply voltage",
          "symbol": "VBAT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input voltage on FOE, SCL, SDA",
          "symbol": "VI",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6.5,
          "conditions": "min printed GND-0.3 (GND = 0 V)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output voltage on FOUT pins",
          "symbol": "VO1",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "min printed GND-0.3 (GND = 0 V); max printed VDD+0.3, no numeric value",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output voltage on SDA and /INT pins",
          "symbol": "VO2",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6.5,
          "conditions": "min printed GND-0.3 (GND = 0 V)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Latch-up",
          "symbol": "LU",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -200,
          "typ": null,
          "max": 200,
          "conditions": "printed ±200",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Charged Device Model",
          "symbol": "CDM",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1000,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Human Body Model",
          "symbol": "HBM",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 4000,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating supply voltage in normal mode",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.5,
          "typ": 3,
          "max": 5.5,
          "conditions": "normal mode",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Backup power supply voltage",
          "symbol": "VBAT",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.6,
          "typ": 3,
          "max": 5.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Temp. compensation voltage",
          "symbol": "VTEM",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2,
          "typ": 3,
          "max": 5.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "TOPR",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Average current consumption (1)",
          "symbol": "IDD1",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.59,
          "max": 2.4,
          "conditions": "VDD = 5 V; fSCL = 0 Hz, /INT = VDD, FOE = GND, VDD = VBAT, FOUT OFF (Hi-Z)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Average current consumption (2)",
          "symbol": "IDD2",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.54,
          "max": 2.2,
          "conditions": "VDD = 3 V; fSCL = 0 Hz, /INT = VDD, FOE = GND, VDD = VBAT, FOUT OFF (Hi-Z)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Average current consumption (3)",
          "symbol": "IDD3",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1.66,
          "max": 3.4,
          "conditions": "VDD = 5 V; fSCL = 0 Hz, /INT = VDD, FOE = VDD, FOUT 32.768 kHz, CL = 0 pF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Average current consumption (4)",
          "symbol": "IDD4",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1.18,
          "max": 2.8,
          "conditions": "VDD = 3 V; fSCL = 0 Hz, /INT = VDD, FOE = VDD, FOUT 32.768 kHz, CL = 0 pF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "High-level input voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 5.5,
          "conditions": "SCL, SDA, FOE pins; min printed 0.8 × VDD",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-level input voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "SCL, SDA, FOE pins; min printed GND - 0.3 (GND = 0 V); max printed 0.2 × VDD",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage FOUT pin",
          "symbol": "VOH1",
          "kind": "electrical",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 5,
          "conditions": "VDD = 5 V, IOH = -1 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage FOUT pin",
          "symbol": "VOH2",
          "kind": "electrical",
          "unit": "V",
          "min": 2.2,
          "typ": null,
          "max": 3,
          "conditions": "VDD = 3 V, IOH = -1 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage FOUT pin",
          "symbol": "VOH3",
          "kind": "electrical",
          "unit": "V",
          "min": 2.9,
          "typ": null,
          "max": 3,
          "conditions": "VDD = 3 V, IOH = -100 µA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage FOUT pin",
          "symbol": "VOL1",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "VDD = 5 V, IOL = 1 mA; max printed GND + 0.5 (GND = 0 V)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage FOUT pin",
          "symbol": "VOL2",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "VDD = 3 V, IOL = 1 mA; max printed GND + 0.8 (GND = 0 V)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage FOUT pin",
          "symbol": "VOL3",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "VDD = 3 V, IOL = 100 µA; max printed GND + 0.1 (GND = 0 V)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage /INT pin",
          "symbol": "VOL4",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.25,
          "conditions": "VDD = 5 V, IOL = 1 mA; max printed GND + 0.25 (GND = 0 V)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage /INT pin",
          "symbol": "VOL5",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "VDD = 3 V, IOL = 1 mA; max printed GND + 0.4 (GND = 0 V)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage SDA pin",
          "symbol": "VOL6",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "VDD ≥ 2 V, IOL = 3 mA; max printed GND + 0.4 (GND = 0 V)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current FOE, SCL, SDA",
          "symbol": "ILK",
          "kind": "electrical",
          "unit": "µA",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "VIN = VDD or GND",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output leakage current /INT, SDA, FOUT",
          "symbol": "IOZ",
          "kind": "electrical",
          "unit": "µA",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "VOUT = VDD or GND",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "SCL clock frequency",
          "symbol": "fSCL",
          "kind": "timing",
          "unit": "kHz",
          "min": null,
          "typ": null,
          "max": 400,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Start condition setup time",
          "symbol": "tSU;STA",
          "kind": "timing",
          "unit": "µs",
          "min": 0.6,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Start condition hold time",
          "symbol": "tHD;STA",
          "kind": "timing",
          "unit": "µs",
          "min": 0.6,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Data setup time",
          "symbol": "tSU;DAT",
          "kind": "timing",
          "unit": "ns",
          "min": 100,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Data hold time",
          "symbol": "tHD;DAT",
          "kind": "timing",
          "unit": "ns",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Stop condition setup time",
          "symbol": "tSU;STO",
          "kind": "timing",
          "unit": "µs",
          "min": 0.6,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Bus idle time between start and stop condition",
          "symbol": "tBUF",
          "kind": "timing",
          "unit": "µs",
          "min": 1.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Time when SCL = L",
          "symbol": "tLOW",
          "kind": "timing",
          "unit": "µs",
          "min": 1.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Time when SCL = H",
          "symbol": "tHIGH",
          "kind": "timing",
          "unit": "µs",
          "min": 0.6,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Rise time for SCL and SDA",
          "symbol": "tr",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Fall time for SCL and SDA",
          "symbol": "tf",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Allowable spike time on bus",
          "symbol": "tSP",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Frequency/voltage characteristics",
          "symbol": "f/V",
          "kind": "tolerance",
          "unit": "ppm",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "Ta = 25℃, VDD = 2.0 V to 5.5 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Oscillation start time",
          "symbol": "tSTA",
          "kind": "timing",
          "unit": "s",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "Ta = 25℃, VDD = 1.6 V to 5.5 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Oscillation start time",
          "symbol": "tSTA",
          "kind": "timing",
          "unit": "s",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "Ta = -40 to +85℃, VDD = 1.6 V to 5.5 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Aging",
          "symbol": "fa",
          "kind": "tolerance",
          "unit": "ppm",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "Ta = 25℃, VDD = 3.0 V, first year",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Temperature sensor accuracy",
          "symbol": "Tsensor",
          "kind": "tolerance",
          "unit": "℃",
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