HC32L110C4UA-SFN20TR

{
  "schema_version": 1,
  "type": "component",
  "slug": "hc32l110c4ua-sfn20tr",
  "title": "HC32L110C4UA-SFN20TR",
  "brief": "XHSC Microcontrollers (MCU/MPU/SOC), WQFN-20-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",
    "embedded processors & controllers",
    "hc32l110c4ua-sfn20tr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "HC32L110C4UA-SFN20TR",
    "manufacturer": "XHSC",
    "package": "WQFN-20-EP(3x3)",
    "pin_count": 21,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588913571937849344",
    "parts": {
      "symbol": "hc32l110c4ua-sfn20tr.kicad_sym",
      "footprint": "hc32l110c4ua-sfn20tr.kicad_mod",
      "model_3d": "hc32l110c4ua-sfn20tr-hero.glb",
      "model_3d_plain": "hc32l110c4ua-sfn20tr-etched.glb",
      "model_3d_step": "hc32l110c4ua-sfn20tr-etched.step",
      "model_3d_step_plain": "hc32l110c4ua-sfn20tr.step",
      "lbr": "hc32l110c4ua-sfn20tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C493491"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T00:11:54Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RESETB/P00",
        "type": "input",
        "description": "Active-low chip reset input with a non-disconnectable pull-up (80 kΩ typ.), VIL max 0.3VCC, VIH min 0.7VCC, 200 mV Schmitt hysteresis and 100 ns filtered pulse; also usable as GPIO P00 digital input."
      },
      {
        "number": "2",
        "name": "XTHI/AIN7/VCIN7/P01",
        "type": "bidirectional",
        "description": "GPIO P01 that doubles as the 4-32 MHz XTH crystal oscillator input, AIN7/VCIN7 analog input, and UART0_RXD, I2C_SDA and timer functions."
      },
      {
        "number": "3",
        "name": "XTHO/AIN8/P02",
        "type": "bidirectional",
        "description": "GPIO P02 that doubles as the 4-32 MHz XTH crystal oscillator output and AIN8 analog input, also UART0_TXD and I2C_SCL."
      },
      {
        "number": "4",
        "name": "AVSS/DVSS",
        "type": "power_in",
        "description": "Chip ground; all VSS pins must be connected to the external supply system within its allowed range."
      },
      {
        "number": "5",
        "name": "VCAP",
        "type": "power_out",
        "description": "LDO core supply output for internal circuits only; a 4.7uF capacitor must be connected to it."
      },
      {
        "number": "6",
        "name": "AVCC/DVCC",
        "type": "power_in",
        "description": "Chip power supply, 1.8 V to 5.5 V; decoupling capacitors must be placed as close as possible to this pin."
      },
      {
        "number": "7",
        "name": "LVDIN1/P03",
        "type": "bidirectional",
        "description": "GPIO P03 that doubles as LVDIN1 analog monitoring input for the LVD, plus PCA, SPI_CS, Timer6, LPTimer, RTC_1HZ and VC0_OUT functions."
      },
      {
        "number": "8",
        "name": "XTLO/P15",
        "type": "bidirectional",
        "description": "GPIO P15 that doubles as the 32.768 kHz XTL crystal oscillator output, also I2C_SDA, UART0_RXD and LVD_OUT."
      },
      {
        "number": "9",
        "name": "XTLI/P14",
        "type": "bidirectional",
        "description": "GPIO P14 that doubles as the 32.768 kHz XTL crystal oscillator input, also I2C_SCL, PCA external clock input (ECI) and ADC_RDY."
      },
      {
        "number": "10",
        "name": "LVDIN2/VCIN0/P23",
        "type": "bidirectional",
        "description": "GPIO P23 that doubles as LVDIN2/VC0 analog input, also PCA_CH0, SPI_MISO, UART1_TXD and 38 kHz IR carrier output (IR_OUT)."
      },
      {
        "number": "11",
        "name": "P24/AIN0",
        "type": "bidirectional",
        "description": "GPIO P24 that doubles as AIN0 analog input, also VC1_OUT, SPI_MOSI, UART1_RXD and HCLK_OUT."
      },
      {
        "number": "12",
        "name": "P25/LVDIN3/VC1",
        "type": "bidirectional",
        "description": "GPIO P25 that doubles as LVDIN3/VC1 analog input, also LVD_OUT, LPUART_RXD and I2C_SDA."
      },
      {
        "number": "13",
        "name": "P26/AIN1",
        "type": "bidirectional",
        "description": "GPIO P26 that doubles as AIN1 analog input, also SPI_MOSI, LPUART_TXD and I2C_SCL."
      },
      {
        "number": "14",
        "name": "P27/SWDIO",
        "type": "bidirectional",
        "description": "GPIO P27 that doubles as the SWDIO serial-wire debug data pin; the datasheet lists P27/P31 as an alternative SWD/ISP programming interface."
      },
      {
        "number": "15",
        "name": "P31/SWCLK",
        "type": "bidirectional",
        "description": "GPIO P31 that doubles as the SWCLK serial-wire debug clock pin, also usable for SWD/ISP programming alongside P27."
      },
      {
        "number": "16",
        "name": "P32/AIN2/VCIN2",
        "type": "bidirectional",
        "description": "GPIO P32 that doubles as AIN2/VC2 analog input, also RTC_1HZ, UART1_TXD and VC1OUT."
      },
      {
        "number": "17",
        "name": "P33/AIN3/VCIN3",
        "type": "bidirectional",
        "description": "GPIO P33 that doubles as AIN3/VC3 analog input, also UART1_RXD, LPUART_RXD and XTL_OUT (32K oscillator output)."
      },
      {
        "number": "18",
        "name": "AIN4/VCIN4/P34",
        "type": "bidirectional",
        "description": "GPIO P34 that doubles as AIN4/VC4 analog input, also RTC_1HZ, LPUART_TXD and TIM0_EXT."
      },
      {
        "number": "19",
        "name": "AIN5/VCIN5/P35",
        "type": "bidirectional",
        "description": "GPIO P35 that doubles as AIN5/VC5 analog input; the datasheet recommends reserving P35 and P36 as the ISP programming interface, also UART1_TXD, UART0_TXD and I2C_SDA."
      },
      {
        "number": "20",
        "name": "AIN6/VCIN6/AVREF/P36",
        "type": "bidirectional",
        "description": "GPIO P36 that doubles as AIN6/VC6 analog input and AVREF external reference input, also UART1_RXD, UART0_RXD and I2C_SCL; the datasheet recommends reserving P35/P36 as the ISP programming interface."
      },
      {
        "number": "21",
        "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 exposed thermal pad is not given a pin number in the datasheet text. Per the note on page 18 it ; Pin types are KiCad classes assigned by me. Every GPIO-muxed pin is typed bidirectional, including c; The ordering code suffix SFN20TR maps to the QFN20(3*3) package, tape-and-reel, on page 67. The pin ",
          "exposed pad 21 added from the footprint"
        ],
        "pages_sent": 46,
        "cost_usd": 0.1657,
        "at": "2026-10-19T00:10:06"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588913571937849344",
        "pages": 69,
        "sha256": "9ca08dbf01e4bbb9",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "hc32l110c4ua-sfn20tr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3,
          3,
          0.52
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "0ee4e1082236390795238cd34b082d96efd160d6292c636cc40201a5a30cdc63",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "hc32l110c4ua-sfn20tr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3,
          3,
          0.52
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "280ab1be4fd509c6018a75fbe03c953e8a0de5c411f56962f16949365d90b495",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "XHSC",
      "Package": "WQFN-20-EP(3x3)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "21"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "9ca08dbf01e4bbb947809eb62b974ac5b300b21f5fe60c465216e32a0f42a8d5",
      "rows": [
        {
          "name": "External main supply voltage VCC-VSS (including AVCC and DVCC)",
          "symbol": "VCC – VSS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5.5,
          "conditions": "External main supply voltage (including AVCC and DVCC)",
          "source_page": 28,
          "source": "datasheet"
        },
        {
          "name": "Voltage difference between supply pins",
          "symbol": "|ΔVCCx|",
          "kind": "absolute_maximum",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 28,
          "source": "datasheet"
        },
        {
          "name": "Voltage difference between ground pins",
          "symbol": "|VSSx – VSS|",
          "kind": "absolute_maximum",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 28,
          "source": "datasheet"
        },
        {
          "name": "Total supply current through DVCC/AVCC supply line",
          "symbol": "IVCC",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "Supply current through DVCC/AVCC lines",
          "source_page": 28,
          "source": "datasheet"
        },
        {
          "name": "Total ground current through VSS line",
          "symbol": "IVSS",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "Current flowing out through VSS ground line",
          "source_page": 28,
          "source": "datasheet"
        },
        {
          "name": "Output sink current on any I/O and control pin",
          "symbol": "IIO",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 25,
          "conditions": "",
          "source_page": 28,
          "source": "datasheet"
        },
        {
          "name": "Output current on any I/O and control pin",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -25,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 28,
          "source": "datasheet"
        },
        {
          "name": "Injection current on RESETB pin",
          "symbol": "IINJ(PIN)",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "RESETB pin",
          "source_page": 28,
          "source": "datasheet"
        },
        {
          "name": "Injection current on XTHI pin of XTH and XTLI pin of XTL",
          "symbol": "IINJ(PIN)",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "XTHI of XTH and XTLI of XTL",
          "source_page": 28,
          "source": "datasheet"
        },
        {
          "name": "Injection current on other pins",
          "symbol": "IINJ(PIN)",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "Other pins",
          "source_page": 28,
          "source": "datasheet"
        },
        {
          "name": "Total injection current on all I/O and control pins",
          "symbol": "∑IINJ(PIN)",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -25,
          "typ": null,
          "max": 25,
          "conditions": "",
          "source_page": 28,
          "source": "datasheet"
        },
        {
          "name": "Operating supply voltage (Vdd)",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.8,
          "typ": null,
          "max": 5.5,
          "conditions": "Ordering table entry for HC32L110C4UA (Vdd 1.8~5.5V)",
          "source_page": 67,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "Series feature list (HC32L110 series)",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "External input voltage range (LVD)",
          "symbol": "Vex",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "Internal 2.5V reference voltage",
          "symbol": "VREF25",
          "kind": "electrical",
          "unit": "V",
          "min": 2.475,
          "typ": 2.5,
          "max": 2.525,
          "conditions": "常温25°C 3.3V",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "Internal 2.5V reference voltage",
          "symbol": "VREF25",
          "kind": "electrical",
          "unit": "V",
          "min": 2.463,
          "typ": 2.5,
          "max": 2.525,
          "conditions": "-40~85°C 2.8~5.5V",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "Internal 1.5V reference voltage",
          "symbol": "VREF15",
          "kind": "electrical",
          "unit": "V",
          "min": 1.485,
          "typ": 1.5,
          "max": 1.515,
          "conditions": "常温25°C 3.3V",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "Internal 1.5V reference voltage",
          "symbol": "VREF15",
          "kind": "electrical",
          "unit": "V",
          "min": 1.477,
          "typ": 1.5,
          "max": 1.519,
          "conditions": "-40~85°C 1.8~5.5V",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "IDD run mode, 4 MHz RCH",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 700,
          "max": 880,
          "conditions": "All peripherals clock ON, VCAP=1.55V, VCC=1.8-5.5V, RCH clock source, 4M",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "IDD run mode, 8 MHz RCH",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 1350,
          "max": 1600,
          "conditions": "All peripherals clock ON, VCAP=1.55V, VCC=1.8-5.5V, RCH clock source, 8M",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "IDD run mode, 16 MHz RCH",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 2500,
          "max": 3000,
          "conditions": "All peripherals clock ON, VCAP=1.55V, VCC=1.8-5.5V, RCH clock source, 16M",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "IDD run mode, 24 MHz RCH",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 3600,
          "max": 4300,
          "conditions": "All peripherals clock ON, VCAP=1.55V, VCC=1.8-5.5V, RCH clock source, 24M, run while(1) in Flash",
          "source_page": 34,
          "source": "datasheet"
        },
        {
          "name": "IDD run while(1) in Flash, 4 MHz RCH",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 550,
          "max": 750,
          "conditions": "All peripheral clock OFF, VCAP=1.55V, VCC=1.8-5.5V, RCH clock source, 4M",
          "source_page": 34,
          "source": "datasheet"
        },
        {
          "name": "IDD run while(1) in Flash, 8 MHz RCH",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 1050,
          "max": 1300,
          "conditions": "All peripheral clock OFF, VCAP=1.55V, VCC=1.8-5.5V, RCH clock source, 8M",
          "source_page": 34,
          "source": "datasheet"
        },
        {
          "name": "IDD run while(1) in Flash, 16 MHz RCH",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 1900,
          "max": 2400,
          "conditions": "All peripheral clock OFF, VCAP=1.55V, VCC=1.8-5.5V, RCH clock source, 16M",
          "source_page": 34,
          "source": "datasheet"
        },
        {
          "name": "IDD run while(1) in Flash, 24 MHz RCH",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 2700,
          "max": 3300,
          "conditions": "All peripheral clock OFF, VCAP=1.55V, VCC=1.8-5.5V, RCH clock source, 24M",
          "source_page": 34,
          "source": "datasheet"
        },
        {
          "name": "IDD run while(1) in Flash, 32 MHz RCH (Flash wait = 1)",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 2850,
          "max": 3000,
          "conditions": "All peripheral clock OFF, VCAP=1.55V, VCC=1.8-5.5V, RCH clock source, 32M (Flash Wait= 1)",
          "source_page": 34,
          "source": "datasheet"
        },
        {
          "name": "IDD sleep mode, 4 MHz RCH, peripherals ON",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 260,
          "max": 280,
          "conditions": "All peripheral clock ON, VCAP=1.55V, VCC=1.8-5.5V, RCH clock source, 4M",
          "source_page": 34,
          "source": "datasheet"
        },
        {
          "name": "IDD sleep mode, 8 MHz RCH, peripherals ON",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 500,
          "max": 520,
          "conditions": "All peripheral clock ON, VCAP=1.55V, VCC=1.8-5.5V, RCH clock source, 8M",
          "source_page": 34,
          "source": "datasheet"
        },
        {
          "name": "IDD sleep mode, 16 MHz RCH, peripherals ON",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 950,
          "max": 970,
          "conditions": "All peripheral clock ON, VCAP=1.55V, VCC=1.8-5.5V, RCH clock source, 16M",
          "source_page": 34,
          "source": "datasheet"
        },
        {
          "name": "IDD sleep mode, 24 MHz RCH, peripherals ON",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 1400,
          "max": 1420,
          "conditions": "All peripheral clock ON, VCAP=1.55V, VCC=1.8-5.5V, RCH clock source, 24M",
          "source_page": 34,
          "source": "datasheet"
        },
        {
          "name": "IDD sleep mode, 4 MHz RCH, peripherals OFF",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 110,
          "max": 125,
          "conditions": "All peripheral clock OFF, VCAP=1.55V, VCC=1.8-5.5V, RCH clock source, 4M",
          "source_page": 34,
          "source": "datasheet"
        },
        {
          "name": "IDD sleep mode, 8 MHz RCH, peripherals OFF",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 190,
          "max": 210,
          "conditions": "All peripheral clock OFF, VCAP=1.55V, VCC=1.8-5.5V, RCH clock source, 8M",
          "source_page": 34,
          "source": "datasheet"
        },
        {
          "name": "IDD sleep mode, 16 MHz RCH, peripherals OFF",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 330,
          "max": 360,
          "conditions": "All peripheral clock OFF, VCAP=1.55V, VCC=1.8-5.5V, RCH clock source, 16M",
          "source_page": 34,
          "source": "datasheet"
        },
        {
          "name": "IDD sleep mode, 24 MHz RCH, peripherals OFF",
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