WK2212-IQNG

{
  "schema_version": 1,
  "type": "component",
  "slug": "wk2212-iqng",
  "title": "WK2212-IQNG",
  "brief": "WEIKAI Interface - Specialized, QFN-32-EP(4x4). 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",
    "communication interface chip-uart-485-232",
    "wk2212-iqng",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "WK2212-IQNG",
    "manufacturer": "WEIKAI",
    "package": "QFN-32-EP(4x4)",
    "pin_count": 33,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "Interface - Specialized",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/93be34f5f1fdecbaecd4744ac638d579.pdf",
    "parts": {
      "symbol": "wk2212-iqng.kicad_sym",
      "footprint": "wk2212-iqng.kicad_mod",
      "model_3d": "wk2212-iqng-hero.glb",
      "model_3d_plain": "wk2212-iqng-etched.glb",
      "model_3d_step": "wk2212-iqng-etched.step",
      "model_3d_step_plain": "wk2212-iqng.step",
      "lbr": "wk2212-iqng.lbr"
    },
    "distributor_links": {
      "lcsc": "C2987671"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T21:09:36Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OSCI",
        "type": "input",
        "description": "Crystal oscillator input; a 1M resistor must be connected in parallel with the crystal."
      },
      {
        "number": "2",
        "name": "OSCO",
        "type": "output",
        "description": "Crystal oscillator output."
      },
      {
        "number": "3",
        "name": "MP3",
        "type": "bidirectional",
        "description": "Multi-function pin: CS chip select, active low, in 8-bit parallel mode; SSEL SPI chip select, active low, in SPI mode; IA1 IIC device address bit in IIC mode; IR infrared mode select in UART mode (IR=0 infrared, IR=1 normal UART, default high)."
      },
      {
        "number": "4",
        "name": "MP2",
        "type": "bidirectional",
        "description": "Multi-function pin: WR write strobe, active low, in parallel mode; SCLK SPI clock input in SPI mode; SCL IIC clock input in IIC mode; MRX main-port UART receive in UART mode."
      },
      {
        "number": "5",
        "name": "MP1",
        "type": "bidirectional",
        "description": "Multi-function pin: RD read strobe, active low, in parallel mode; MOSI in SPI mode; IA0 IIC device address bit in IIC mode; MTX main-port UART transmit in UART mode."
      },
      {
        "number": "6",
        "name": "MP0",
        "type": "bidirectional",
        "description": "Multi-function pin: AD data/address select in parallel mode (AD=0 register address write, AD=1 register data write); MISO in SPI mode; SDA in IIC mode; NC in UART mode."
      },
      {
        "number": "7",
        "name": "DAT7",
        "type": "bidirectional",
        "description": "Parallel data bus bit 7 in parallel mode; usable as GPIO when the main interface is not parallel mode."
      },
      {
        "number": "8",
        "name": "DAT6",
        "type": "bidirectional",
        "description": "Parallel data bus bit 6 in parallel mode; usable as GPIO when the main interface is not parallel mode."
      },
      {
        "number": "9",
        "name": "DAT5",
        "type": "bidirectional",
        "description": "Parallel data bus bit 5 in parallel mode; usable as GPIO when the main interface is not parallel mode."
      },
      {
        "number": "10",
        "name": "DAT4",
        "type": "bidirectional",
        "description": "Parallel data bus bit 4 in parallel mode; usable as GPIO when the main interface is not parallel mode."
      },
      {
        "number": "11",
        "name": "DAT3",
        "type": "bidirectional",
        "description": "Parallel data bus bit 3 in parallel mode; usable as GPIO when the main interface is not parallel mode."
      },
      {
        "number": "12",
        "name": "DAT2",
        "type": "bidirectional",
        "description": "Parallel data bus bit 2 in parallel mode; usable as GPIO when the main interface is not parallel mode."
      },
      {
        "number": "13",
        "name": "DAT1",
        "type": "bidirectional",
        "description": "Parallel data bus bit 1 in parallel mode; usable as GPIO when the main interface is not parallel mode."
      },
      {
        "number": "14",
        "name": "DAT0",
        "type": "bidirectional",
        "description": "Parallel data bus bit 0 in parallel mode; usable as GPIO when the main interface is not parallel mode."
      },
      {
        "number": "15",
        "name": "RSTN",
        "type": "input",
        "description": "Hardware reset input, active low."
      },
      {
        "number": "16",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply, 2.5 V to 5.0 V operating voltage."
      },
      {
        "number": "17",
        "name": "IRQ",
        "type": "output",
        "description": "Interrupt output, active low; an external pull-up resistor is recommended, typically 5.1 kΩ."
      },
      {
        "number": "18",
        "name": "CTS2",
        "type": "input",
        "description": "Sub-channel 2 clear-to-send input, active low; CTS2=0 indicates the external UART is ready to receive data from the WK2212."
      },
      {
        "number": "19",
        "name": "TX2",
        "type": "output",
        "description": "Sub-channel 2 UART serial data output."
      },
      {
        "number": "20",
        "name": "RX2",
        "type": "input",
        "description": "Sub-channel 2 UART serial data input."
      },
      {
        "number": "21",
        "name": "RTS2",
        "type": "output",
        "description": "Sub-channel 2 request-to-send output, active low; signals the WK2212 sub-channel 2 is ready to receive."
      },
      {
        "number": "22",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "23",
        "name": "MD0",
        "type": "input",
        "description": "Main interface mode select together with MD1: MD1 MD0 = 00 SPI, 01 8-bit parallel bus, 10 IIC, 11 UART; internal pull-up, so floating selects UART (11)."
      },
      {
        "number": "24",
        "name": "MD1",
        "type": "input",
        "description": "Main interface mode select together with MD0: MD1 MD0 = 00 SPI, 01 8-bit parallel bus, 10 IIC, 11 UART; internal pull-up, so floating selects UART (11)."
      },
      {
        "number": "25",
        "name": "CTS1",
        "type": "input",
        "description": "Sub-channel 1 clear-to-send input, active low; CTS1=0 indicates the external UART is ready to receive data from the WK2212."
      },
      {
        "number": "26",
        "name": "TX1",
        "type": "output",
        "description": "Sub-channel 1 UART serial data output."
      },
      {
        "number": "27",
        "name": "RX1",
        "type": "input",
        "description": "Sub-channel 1 UART serial data input."
      },
      {
        "number": "28",
        "name": "RTS1",
        "type": "output",
        "description": "Sub-channel 1 request-to-send output, active low; signals the WK2212 sub-channel 1 is ready to receive."
      },
      {
        "number": "29",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "30",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply, 2.5 V to 5.0 V operating voltage."
      },
      {
        "number": "31",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "32",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "33",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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 datasheet gives the DAT7-DAT0 group as pins 7-14 without an explicit pin-by-pin mapping; the seq; The datasheet describes a QFN32 package with 4.00 x 4.00 mm body and 0.40 mm pitch, but does not men; VDD is listed on two pins (16 and 30) in the pin description table; both are reported as VDD as prin",
          "exposed pad 33 added from the footprint"
        ],
        "pages_sent": 44,
        "cost_usd": 0.1785,
        "at": "2026-10-28T21:09:14"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/93be34f5f1fdecbaecd4744ac638d579.pdf",
        "pages": 44,
        "sha256": "4d238c36c2d19bb2",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 33,
        "described": 33,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "wk2212-iqng.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4,
          4,
          0.6
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "7b482a511cdf2cf875c31931f9fea7f745b8dac2ea6203531cd6604f40a290cb",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "wk2212-iqng-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "4287af574c15c3fffec87d56650821ce37afb95da2b4145c97429197d5589bd3",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "WEIKAI",
      "Package": "QFN-32-EP(4x4)",
      "Category": "Communication Interface Chip/UART/485/232",
      "Pins": "33"
    },
    "characteristics": {
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      "source": "datasheet",
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        },
        {
          "name": "Input voltage",
          "symbol": "VI",
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          "typ": null,
          "max": 5.5,
          "conditions": "",
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        },
        {
          "name": "Output voltage",
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        {
          "name": "Operating temperature",
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          "unit": "℃",
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        {
          "name": "Storage temperature",
          "symbol": "TSTG",
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          "unit": "℃",
          "min": -65,
          "typ": null,
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        },
        {
          "name": "Operating temperature (ordering table for WK2212-IQNG)",
          "symbol": "",
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          "min": -45,
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          "conditions": "VCC=2.5V column; -40℃ to +85℃",
          "source_page": 42,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage",
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          "kind": "recommended_operating",
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          "conditions": "VCC=3.0V column; -40℃ to +85℃",
          "source_page": 42,
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          "name": "Supply voltage",
          "symbol": "VCC",
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          "min": 4.5,
          "typ": null,
          "max": 5,
          "conditions": "VCC=5.0V column; -40℃ to +85℃",
          "source_page": 42,
          "source": "datasheet"
        },
        {
          "name": "Operating current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": 0.8,
          "typ": null,
          "max": 2,
          "conditions": "3.6864MHz crystal, no load; VCC=2.5V column; -40℃ to +85℃",
          "source_page": 42,
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        },
        {
          "name": "Operating current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": 1,
          "typ": null,
          "max": 2,
          "conditions": "3.6864MHz crystal, no load; VCC=3.0V column; -40℃ to +85℃",
          "source_page": 42,
          "source": "datasheet"
        },
        {
          "name": "Operating current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": 2,
          "typ": null,
          "max": 3,
          "conditions": "3.6864MHz crystal, no load; VCC=5.0V column; -40℃ to +85℃",
          "source_page": 42,
          "source": "datasheet"
        },
        {
          "name": "Sleep current",
          "symbol": "ICCSL",
          "kind": "electrical",
          "unit": "uA",
          "min": 150,
          "typ": null,
          "max": null,
          "conditions": "VCC=2.5V column; -40℃ to +85℃",
          "source_page": 42,
          "source": "datasheet"
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        {
          "name": "Sleep current",
          "symbol": "ICCSL",
          "kind": "electrical",
          "unit": "uA",
          "min": 200,
          "typ": null,
          "max": null,
          "conditions": "VCC=3.0V column; -40℃ to +85℃",
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        {
          "name": "Sleep current",
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          "kind": "electrical",
          "unit": "uA",
          "min": 460,
          "typ": null,
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          "conditions": "VCC=5.0V column; -40℃ to +85℃",
          "source_page": 42,
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        },
        {
          "name": "Input high voltage",
          "symbol": "VIH",
          "kind": "electrical",
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          "min": 1.8,
          "typ": null,
          "max": null,
          "conditions": "VCC=2.5V column; -40℃ to +85℃",
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        {
          "name": "Input high voltage",
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          "min": 2,
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          "conditions": "VCC=3.0V column; -40℃ to +85℃",
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        {
          "name": "Input high voltage",
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          "kind": "electrical",
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          "min": 3.6,
          "typ": null,
          "max": null,
          "conditions": "VCC=5.0V column; -40℃ to +85℃",
          "source_page": 42,
          "source": "datasheet"
        },
        {
          "name": "Input low voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.6,
          "conditions": "VCC=2.5V column; -40℃ to +85℃",
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          "name": "Input low voltage",
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          "conditions": "VCC=3.0V column; -40℃ to +85℃",
          "source_page": 42,
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          "name": "Input low voltage",
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          "conditions": "VCC=5.0V column; -40℃ to +85℃",
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        {
          "name": "Input leakage current",
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          "kind": "electrical",
          "unit": "uA",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "VI=5.0 or 0V; VCC=2.5V column; -40℃ to +85℃",
          "source_page": 42,
          "source": "datasheet"
        },
        {
          "name": "Input capacitance",
          "symbol": "CI",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
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          "conditions": "VCC=2.5V column; -40℃ to +85℃",
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          "name": "Output high voltage",
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          "unit": "V",
          "min": 1.9,
          "typ": null,
          "max": null,
          "conditions": "IOH=3mA; VCC=2.5V column; -40℃ to +85℃",
          "source_page": 42,
          "source": "datasheet"
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        {
          "name": "Output high voltage",
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          "typ": null,
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          "conditions": "IOH=3mA; VCC=3.0V column; -40℃ to +85℃",
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          "source": "datasheet"
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          "name": "Output high voltage",
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          "typ": null,
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          "conditions": "IOH=3mA; VCC=5.0V column; -40℃ to +85℃",
          "source_page": 42,
          "source": "datasheet"
        },
        {
          "name": "Output low voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IOL=-3mA; VCC=2.5V column; -40℃ to +85℃",
          "source_page": 42,
          "source": "datasheet"
        },
        {
          "name": "Output low voltage",
          "symbol": "VOL",
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          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 0.4,
          "conditions": "IOL=-3mA; VCC=5.0V column; -40℃ to +85℃",
          "source_page": 42,
          "source": "datasheet"
        },
        {
          "name": "Output leakage current",
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          "kind": "electrical",
          "unit": "uA",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "VCC=2.5V column; -40℃ to +85℃",
          "source_page": 42,
          "source": "datasheet"
        },
        {
          "name": "Output capacitance",
          "symbol": "Co",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "VCC=2.5V column; -40℃ to +85℃",
          "source_page": 42,
          "source": "datasheet"
        },
        {
          "name": "Crystal oscillator frequency",
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          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": null,
          "max": 16,
          "conditions": "VCC=2.5V column; -40℃ to +85℃",
          "source_page": 42,
          "source": "datasheet"
        },
        {
          "name": "Crystal oscillator frequency",
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          "unit": "MHz",
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          "max": 24,
          "conditions": "VCC=3.0V column; -40℃ to +85℃",
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        {
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          "conditions": "VCC=5.0V column; -40℃ to +85℃",
          "source_page": 42,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  "discovery_pitch": "WK2212-IQNG (WEIKAI) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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