Ci522

{
  "schema_version": 1,
  "type": "component",
  "slug": "ci522",
  "title": "Ci522",
  "brief": "Nanjing Zhongke Microelectronics RFID ICs, QFN-16-EP(3x3). 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",
    "rf and wireless",
    "ci522",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "Ci522",
    "manufacturer": "Nanjing Zhongke Microelectronics",
    "package": "QFN-16-EP(3x3)",
    "pin_count": 17,
    "category": "RF And Wireless",
    "subcategory": "RFID ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588906588485144577",
    "parts": {
      "symbol": "ci522.kicad_sym",
      "footprint": "ci522.kicad_mod",
      "model_3d": "ci522-etched.glb",
      "model_3d_plain": "ci522.glb",
      "model_3d_step": "ci522-etched.step",
      "model_3d_step_plain": "ci522.step",
      "lbr": "ci522.lbr"
    },
    "distributor_links": {
      "lcsc": "C2842464"
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD1",
        "type": "power_in",
        "description": "Pad power supply"
      },
      {
        "number": "2",
        "name": "NRSTPD",
        "type": "input",
        "description": "Reset and power-down input: enabled by a positive edge to reset, or enabled when LOW for power-down with internal current sinks switched off, oscillator inhibited, and input pins disconnected from the outside world"
      },
      {
        "number": "3",
        "name": "VDD2",
        "type": "power_in",
        "description": "Floating power supply pin"
      },
      {
        "number": "4",
        "name": "TX1",
        "type": "output",
        "description": "Transmitter 1 delivers the modulated 13.56 MHz energy carrier"
      },
      {
        "number": "5",
        "name": "VDD3",
        "type": "power_in",
        "description": "Transmitter power supply: supplies the output stage of transmitters 1 and 2"
      },
      {
        "number": "6",
        "name": "TX2",
        "type": "output",
        "description": "Transmitter 2 delivers the modulated 13.56 MHz energy carrier"
      },
      {
        "number": "7",
        "name": "VDD4",
        "type": "power_in",
        "description": "Analog power supply"
      },
      {
        "number": "8",
        "name": "VMID",
        "type": "power_in",
        "description": "Internal reference voltage"
      },
      {
        "number": "9",
        "name": "RX",
        "type": "input",
        "description": "RF signal input"
      },
      {
        "number": "10",
        "name": "OSCIN",
        "type": "input",
        "description": "Crystal oscillator inverting amplifier input; also accepts externally generated clock input at fclk = 27.12 MHz"
      },
      {
        "number": "11",
        "name": "OSCOUT",
        "type": "output",
        "description": "Crystal oscillator inverting amplifier output"
      },
      {
        "number": "12",
        "name": "MISO",
        "type": "output",
        "description": "SPI master in, slave out"
      },
      {
        "number": "13",
        "name": "MOSI",
        "type": "input",
        "description": "SPI master out, slave in"
      },
      {
        "number": "14",
        "name": "SCK",
        "type": "input",
        "description": "SPI serial clock input"
      },
      {
        "number": "15",
        "name": "NSS",
        "type": "input",
        "description": "SPI chip select input"
      },
      {
        "number": "16",
        "name": "IRQ",
        "type": "output",
        "description": "Interrupt request output: indicates an interrupt event and can be configured as open-drain or push-pull"
      },
      {
        "number": "17",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground: connection of heatsink pad on package underside"
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-4-6",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 50,
        "cost_usd": 0.261,
        "at": "2026-09-18T01:25:57"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588906588485144577",
        "pages": 50,
        "sha256": "b4ca45fff0896a1a",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 17,
        "described": 17,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ci522.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3,
          3,
          0.785
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3eb81ffac423a66cdcfead8efe56401da171edaf1f2257049aad7b2d3900f6c8",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ci522-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3,
          3,
          0.785
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "e2b64bf376c27928a56d667b05b58b593dfd89609d20ab5ea5edc7d57b93a026",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Nanjing Zhongke Microelectronics",
      "Package": "QFN-16-EP(3x3)",
      "Category": "RF And Wireless",
      "Pins": "17"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ci522"
  ],
  "discovery_pitch": "Ci522 (Nanjing Zhongke Microelectronics) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ci522.kicad_sym",
    "ci522.kicad_mod",
    "ci522.glb",
    "ci522.step",
    "ci522.lbr",
    "docs/hero.png",
    "docs/ci522-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T19:04:49.785Z"
}