CH571R

{
  "schema_version": 1,
  "type": "component",
  "slug": "ch571r",
  "title": "CH571R",
  "brief": "WCH(Jiangsu Qin Heng) Microcontrollers (MCU/MPU/SOC), TSSOP-16. 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",
    "embedded processors & controllers",
    "ch571r",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CH571R",
    "manufacturer": "WCH(Jiangsu Qin Heng)",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/553d7e1c8f9f010d0a07320bcbc28693.pdf",
    "parts": {
      "symbol": "ch571r.kicad_sym",
      "footprint": "ch571r.kicad_mod",
      "model_3d": "ch571r-hero.glb",
      "model_3d_plain": "ch571r-etched.glb",
      "model_3d_step": "ch571r-etched.step",
      "model_3d_step_plain": "ch571r.step",
      "lbr": "ch571r.lbr"
    },
    "distributor_links": {
      "lcsc": "C39831291"
    },
    "distributor_check": {
      "checked_at": "2026-10-26T18:58:29Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PA15",
        "type": "bidirectional",
        "description": "General-purpose I/O PA15 with analog ADC input AIN5, SPI0 MISO (master input/slave output) and UART0 RXD0_ remap."
      },
      {
        "number": "2",
        "name": "PA14",
        "type": "bidirectional",
        "description": "General-purpose I/O PA14 with analog ADC input AIN4, SPI0 MOSI (master output/slave input) and UART0 TXD0_ remap."
      },
      {
        "number": "3",
        "name": "PA13",
        "type": "bidirectional",
        "description": "General-purpose I/O PA13 with analog ADC input AIN3 and SPI0 serial clock SCK0."
      },
      {
        "number": "4",
        "name": "PA12",
        "type": "bidirectional",
        "description": "General-purpose I/O PA12 with analog ADC input AIN2 and SPI0 active-low slave chip-select input SCS."
      },
      {
        "number": "5",
        "name": "VIO33/VDD33",
        "type": "power_in",
        "description": "Combined DC-DC/battery supply input and I/O supply input (2.3V to 3.6V for non-CH573X parts) needing a decoupling capacitor close to the pin, 0.1uF or more recommended."
      },
      {
        "number": "6",
        "name": "PA8",
        "type": "bidirectional",
        "description": "General-purpose I/O PA8 with UART1 serial data input RXD1."
      },
      {
        "number": "7",
        "name": "PA9",
        "type": "bidirectional",
        "description": "General-purpose I/O PA9 with timer 0 capture input/PWM output TMR0 and UART1 serial data output TXD1."
      },
      {
        "number": "8",
        "name": "PB11",
        "type": "bidirectional",
        "description": "General-purpose I/O PB11 with USB D+ data line UD+ (no series resistor allowed when used for USB) and timer 2 pin remap TMR2_."
      },
      {
        "number": "9",
        "name": "PB10",
        "type": "bidirectional",
        "description": "General-purpose I/O PB10 with USB D- data line UD- (no series resistor allowed when used for USB) and timer 1 pin remap TMR1_."
      },
      {
        "number": "10",
        "name": "PB23",
        "type": "bidirectional",
        "description": "General-purpose I/O PB23 with active-low external reset input RST# (internal pull-up, minimum pulse 100ns) and timer 0 pin remap TMR0_."
      },
      {
        "number": "11",
        "name": "PB22",
        "type": "bidirectional",
        "description": "General-purpose I/O PB22 with timer 3 capture input/PWM output TMR3."
      },
      {
        "number": "12",
        "name": "X32MO",
        "type": "bidirectional",
        "description": "Inverting output of the high-frequency oscillator HSE, connects to one side of the 32MHz crystal."
      },
      {
        "number": "13",
        "name": "X32MI",
        "type": "input",
        "description": "Input of the high-frequency oscillator HSE, connects to the other side of the 32MHz crystal."
      },
      {
        "number": "14",
        "name": "VINTA",
        "type": "passive",
        "description": "Internal analog supply node needing a decoupling capacitor close to the pin: 0.47uF or larger without DC-DC, 1uF (0.47uF to 2.2uF supported) with DC-DC."
      },
      {
        "number": "15",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground, 0V reference point."
      },
      {
        "number": "16",
        "name": "ANT",
        "type": "bidirectional",
        "description": "RF signal input/output, recommended to connect directly to the antenna."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin numbers and names for CH571R come from the package diagram text on page 3. The pin description t; Pin types are inferred. VINTA is an internal supply node with external decoupling (set to passive). ; Pin 5 is a combined VIO33/VDD33 supply. The datasheet does not list a CH571R-specific description fo"
        ],
        "pages_sent": 5,
        "cost_usd": 0.3451,
        "at": "2026-10-26T18:58:12"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/553d7e1c8f9f010d0a07320bcbc28693.pdf",
        "pages": 97,
        "sha256": "d2c436092d64dd3c",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ch571r.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ch571r-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "dc388033a0140176a0e500275dc557981cb20d0caeecf71f9fa391849d3367e2",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "WCH(Jiangsu Qin Heng)",
      "Package": "TSSOP-16",
      "Category": "Embedded Processors & Controllers",
      "Pins": "16"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ch571r"
  ],
  "discovery_pitch": "CH571R (WCH(Jiangsu Qin Heng)) 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",
    "ch571r.kicad_sym",
    "ch571r.kicad_mod",
    "ch571r.glb",
    "ch571r.step",
    "ch571r.lbr",
    "docs/hero.png",
    "docs/ch571r-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ch571r-hero.glb",
    "ch571r-hero.overlay.json",
    "ch571r-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}