NUC120RE3DN

{
  "schema_version": 1,
  "type": "component",
  "slug": "nuc120re3dn",
  "title": "NUC120RE3DN",
  "brief": "Nuvoton Tech Microcontrollers (MCU/MPU/SOC), LQFP-64(10x10). 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",
    "nuc120re3dn",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "NUC120RE3DN",
    "manufacturer": "Nuvoton Tech",
    "package": "LQFP-64(10x10)",
    "pin_count": 64,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588898984970080256",
    "parts": {
      "symbol": "nuc120re3dn.kicad_sym",
      "footprint": "nuc120re3dn.kicad_mod",
      "model_3d": "nuc120re3dn-hero.glb",
      "model_3d_plain": "nuc120re3dn-etched.glb",
      "model_3d_step": "nuc120re3dn-etched.step",
      "model_3d_step_plain": "nuc120re3dn.step",
      "lbr": "nuc120re3dn.lbr"
    },
    "distributor_links": {
      "lcsc": "C114163",
      "digikey": "NUC120RE3DN-ND",
      "mouser": "503-NUC120RE3DN"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T01:40:55Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "NUC120RE3DN-ND",
        "status": "found",
        "lifecycle": "Not For New Designs"
      },
      "mouser": {
        "pn": "503-NUC120RE3DN",
        "status": "found",
        "lifecycle": "Not Recommended for New Designs"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PB.14",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate functions external interrupt INT0 and SPI3 second slave select SPISS31."
      },
      {
        "number": "2",
        "name": "PB.13",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function comparator 1 output CPO1."
      },
      {
        "number": "3",
        "name": "PB.12",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate functions comparator 0 output CPO0 and clock divider output CLKO."
      },
      {
        "number": "4",
        "name": "X32O",
        "type": "output",
        "description": "Output pin of the external 32.768 kHz crystal oscillator used for RTC and low-power operation."
      },
      {
        "number": "5",
        "name": "X32I",
        "type": "input",
        "description": "Input pin of the external 32.768 kHz crystal oscillator used for RTC and low-power operation."
      },
      {
        "number": "6",
        "name": "PA.11",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function I2C1 clock SCL."
      },
      {
        "number": "7",
        "name": "PA.10",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function I2C1 data SDA."
      },
      {
        "number": "8",
        "name": "PA.9",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function I2C0 clock SCL."
      },
      {
        "number": "9",
        "name": "PA.8",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function I2C0 data SDA."
      },
      {
        "number": "10",
        "name": "PB.4",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function UART1 receive input RXD1."
      },
      {
        "number": "11",
        "name": "PB.5",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function UART1 transmit output TXD1."
      },
      {
        "number": "12",
        "name": "PB.6",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function UART1 request-to-send output RTS1."
      },
      {
        "number": "13",
        "name": "PB.7",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function UART1 clear-to-send input CTS1."
      },
      {
        "number": "14",
        "name": "LDO",
        "type": "power_out",
        "description": "Output pin of the internal LDO, which requires an external capacitor placed close to the pin."
      },
      {
        "number": "15",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply pin for the I/O ports, the internal PLL/LDO source and the digital circuits."
      },
      {
        "number": "16",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "17",
        "name": "VBUS",
        "type": "power_in",
        "description": "USB power pin supplied by the USB host or hub."
      },
      {
        "number": "18",
        "name": "VDD33",
        "type": "power_out",
        "description": "Internal 3.3 V output pin of the USB regulator, which requires an external bypass capacitor."
      },
      {
        "number": "19",
        "name": "D-",
        "type": "bidirectional",
        "description": "USB full-speed differential signal D-."
      },
      {
        "number": "20",
        "name": "D+",
        "type": "bidirectional",
        "description": "USB full-speed differential signal D+."
      },
      {
        "number": "21",
        "name": "PB.0",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function UART0 receive input RXD0."
      },
      {
        "number": "22",
        "name": "PB.1",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function UART0 transmit output TXD0."
      },
      {
        "number": "23",
        "name": "PB.2",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function UART0 request-to-send output RTS0."
      },
      {
        "number": "24",
        "name": "PB.3",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function UART0 clear-to-send input CTS0."
      },
      {
        "number": "25",
        "name": "PC.3",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate functions SPI0 MOSI0 (master out/slave in) and I2S data output I2SDO."
      },
      {
        "number": "26",
        "name": "PC.2",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate functions SPI0 MISO0 (master in/slave out) and I2S data input I2SDI."
      },
      {
        "number": "27",
        "name": "PC.1",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate functions SPI0 serial clock SPICLK0 and I2S bit clock I2SBCLK."
      },
      {
        "number": "28",
        "name": "PC.0",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate functions SPI0 slave select SPISS00 and I2S left/right clock I2SLRCLK."
      },
      {
        "number": "29",
        "name": "PE.5",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function PWM5 output."
      },
      {
        "number": "30",
        "name": "PB.11",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate functions Timer3 external counter input TM3 and PWM4 output."
      },
      {
        "number": "31",
        "name": "PB.10",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate functions Timer2 external counter input TM2 and SPI0 second slave select SPISS01."
      },
      {
        "number": "32",
        "name": "PB.9",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate functions Timer1 external counter input TM1 and SPI1 second slave select SPISS11."
      },
      {
        "number": "33",
        "name": "PC.11",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function SPI1 MOSI0 (master out/slave in)."
      },
      {
        "number": "34",
        "name": "PC.10",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function SPI1 MISO0 (master in/slave out)."
      },
      {
        "number": "35",
        "name": "PC.9",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function SPI1 serial clock SPICLK1."
      },
      {
        "number": "36",
        "name": "PC.8",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function SPI1 slave select SPISS10."
      },
      {
        "number": "37",
        "name": "PA.15",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate functions PWM3 output and I2S master clock output I2SMCLK."
      },
      {
        "number": "38",
        "name": "PA.14",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function PWM2 output."
      },
      {
        "number": "39",
        "name": "PA.13",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function PWM1 output."
      },
      {
        "number": "40",
        "name": "PA.12",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function PWM0 output."
      },
      {
        "number": "41",
        "name": "ICE_DAT",
        "type": "bidirectional",
        "description": "Serial data pin of the debugger interface."
      },
      {
        "number": "42",
        "name": "ICE_CK",
        "type": "input",
        "description": "Serial clock pin of the debugger interface."
      },
      {
        "number": "43",
        "name": "AVSS",
        "type": "power_in",
        "description": "Analog circuit ground pin."
      },
      {
        "number": "44",
        "name": "PA.0",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function ADC analog input ADC0."
      },
      {
        "number": "45",
        "name": "PA.1",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function ADC analog input ADC1."
      },
      {
        "number": "46",
        "name": "PA.2",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function ADC analog input ADC2."
      },
      {
        "number": "47",
        "name": "PA.3",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function ADC analog input ADC3."
      },
      {
        "number": "48",
        "name": "PA.4",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function ADC analog input ADC4."
      },
      {
        "number": "49",
        "name": "PA.5",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function ADC analog input ADC5."
      },
      {
        "number": "50",
        "name": "PA.6",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function ADC analog input ADC6."
      },
      {
        "number": "51",
        "name": "PA.7",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate functions ADC analog input ADC7 and SPI2 second slave select SPISS21."
      },
      {
        "number": "52",
        "name": "AVDD",
        "type": "power_in",
        "description": "Power supply pin for the internal analog circuits."
      },
      {
        "number": "53",
        "name": "PC.7",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function comparator 0 negative input CPN0."
      },
      {
        "number": "54",
        "name": "PC.6",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function comparator 0 positive input CPP0."
      },
      {
        "number": "55",
        "name": "PC.15",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function comparator 1 negative input CPN1."
      },
      {
        "number": "56",
        "name": "PC.14",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function comparator 1 positive input CPP1."
      },
      {
        "number": "57",
        "name": "PB.15",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate function external interrupt input /INT1."
      },
      {
        "number": "58",
        "name": "XT1_OUT",
        "type": "output",
        "description": "Output pin of the external 4~24 MHz high-speed crystal oscillator."
      },
      {
        "number": "59",
        "name": "XT1_IN",
        "type": "input",
        "description": "Input pin of the external 4~24 MHz high-speed crystal oscillator."
      },
      {
        "number": "60",
        "name": "/RESET",
        "type": "input",
        "description": "External reset input, active low, which resets the MCU to its initial state when pulled low and has an internal pull-up."
      },
      {
        "number": "61",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "62",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply pin for the I/O ports, the internal PLL/LDO source and the digital circuits."
      },
      {
        "number": "63",
        "name": "PVSS",
        "type": "power_in",
        "description": "PLL ground pin."
      },
      {
        "number": "64",
        "name": "PB.8",
        "type": "bidirectional",
        "description": "General-purpose digital I/O pin, with alternate functions ADC external trigger input STADC and Timer0 external counter input TM0."
      }
    ],
    "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 LQFP-64 package drawing and dimensions (section 6.2, page 157) are not in the supplied text (onl; The MPN NUC120RE3DN is a USB Line part, so the NUC120 pin table (pages 31-37) was used; the NUC100 t; The datasheet pin table lists the 64-pin ordering column in an unusual layout. Pin types for multi-f",
          "1/64 pins cited to the wrong page (name found elsewhere): ['19:D-@p32']"
        ],
        "pages_sent": 99,
        "cost_usd": 0.3711,
        "at": "2026-10-21T01:37:06"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588898984970080256",
        "pages": 160,
        "sha256": "6501ceacfb436f01",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 64,
        "described": 64,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "nuc120re3dn.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12,
          12,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b0c827bc5c05552175d28affe44a5bd2ab45c9c36efff6ff07a74cc449b13db4",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "nuc120re3dn-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12,
          12,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "38719486b051d6ebf90ffa1bf68bc5e2d7de1f8a4b09e99e91cb2cb49d19121b",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Nuvoton Tech",
      "Package": "LQFP-64(10x10)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "64"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "6501ceacfb436f01ac1c50d14d6885c1cfaa4f180a183c0f5d89048064fa6519",
      "rows": [
        {
          "name": "DC supply voltage (VDD-VSS)",
          "symbol": "VDD-VSS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 142,
          "source": "datasheet"
        },
        {
          "name": "Oscillator frequency",
          "symbol": "1/tCLCL",
          "kind": "absolute_maximum",
          "unit": "MHz",
          "min": 4,
          "typ": null,
          "max": 24,
          "conditions": "",
          "source_page": 142,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 142,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TST",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 142,
          "source": "datasheet"
        },
        {
          "name": "VDD maximum inflow current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 120,
          "conditions": "",
          "source_page": 142,
          "source": "datasheet"
        },
        {
          "name": "VSS maximum outflow current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 120,
          "conditions": "",
          "source_page": 142,
          "source": "datasheet"
        },
        {
          "name": "Single I/O pin maximum sink current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 35,
          "conditions": "",
          "source_page": 142,
          "source": "datasheet"
        },
        {
          "name": "Single I/O pin maximum source current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 35,
          "conditions": "",
          "source_page": 142,
          "source": "datasheet"
        },
        {
          "name": "Sum of all I/O pins maximum sink current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 142,
          "source": "datasheet"
        },
        {
          "name": "Sum of all I/O pins maximum source current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 142,
          "source": "datasheet"
        },
        {
          "name": "Operating voltage",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.5,
          "typ": null,
          "max": 5.5,
          "conditions": "VDD = 2.5V ~ 5.5V up to 50 MHz",
          "source_page": 143,
          "source": "datasheet"
        },
        {
          "name": "LDO output voltage",
          "symbol": "VLDO",
          "kind": "electrical",
          "unit": "V",
          "min": 1.62,
          "typ": 1.8,
          "max": 1.98,
          "conditions": "VDD > 2.5V",
          "source_page": 143,
          "source": "datasheet"
        },
        {
          "name": "PA-PF input leakage current",
          "symbol": "ILK",
          "kind": "electrical",
          "unit": "μA",
          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "VDD = 5.5V, 0<VIN<VDD",
          "source_page": 147,
          "source": "datasheet"
        },
        {
          "name": "PA-PF input low voltage (TTL input)",
          "symbol": "VIL1",
          "kind": "electrical",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 0.8,
          "conditions": "VDD = 4.5V",
          "source_page": 146,
          "source": "datasheet"
        },
        {
          "name": "PA-PF input low voltage (TTL input)",
          "symbol": "VIL1",
          "kind": "electrical",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 0.6,
          "conditions": "VDD = 2.5V",
          "source_page": 146,
          "source": "datasheet"
        },
        {
          "name": "PA-PF input high voltage (TTL input)",
          "symbol": "VIH1",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "VDD = 5.5V",
          "source_page": 146,
          "source": "datasheet"
        },
        {
          "name": "PA-PF input high voltage (TTL input)",
          "symbol": "VIH1",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": null,
          "conditions": "VDD = 3.0V",
          "source_page": 146,
          "source": "datasheet"
        },
        {
          "name": "XT1_IN input low voltage",
          "symbol": "VIL3",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 0.8,
          "conditions": "VDD = 4.5V",
          "source_page": 147,
          "source": "datasheet"
        },
        {
          "name": "XT1_IN input low voltage",
          "symbol": "VIL3",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 0.4,
          "conditions": "VDD = 3.0V",
          "source_page": 147,
          "source": "datasheet"
        },
        {
          "name": "XT1_IN input high voltage",
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