NUC123LD4AE0

{
  "slug": "nuc123ld4ae0",
  "version": "0.1.0",
  "type": "component",
  "description": "Nuvoton Tech Microcontroller Units (MCUs/MPUs/SOCs), LQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "single chip microcomputer-microcontroller",
    "nuc123ld4ae0",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "nuc123ld4ae0.kicad_sym",
    "nuc123ld4ae0.kicad_mod",
    "nuc123ld4ae0.glb",
    "nuc123ld4ae0.step",
    "nuc123ld4ae0.lbr",
    "docs/hero.png",
    "docs/nuc123ld4ae0-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "nuc123ld4ae0-hero.glb",
    "nuc123ld4ae0-hero.overlay.json",
    "nuc123ld4ae0-etched.glb"
  ],
  "component": {
    "mpn": "NUC123LD4AE0",
    "manufacturer": "Nuvoton Tech",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "Single Chip Microcomputer/Microcontroller",
    "subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/82b297f7a63d68e4dc5dc43b8878f216.pdf",
    "parts": {
      "symbol": "nuc123ld4ae0.kicad_sym",
      "footprint": "nuc123ld4ae0.kicad_mod",
      "model_3d": "nuc123ld4ae0-hero.glb",
      "model_3d_plain": "nuc123ld4ae0-etched.glb",
      "model_3d_step": "nuc123ld4ae0-etched.step",
      "model_3d_step_plain": "nuc123ld4ae0.step",
      "lbr": "nuc123ld4ae0.lbr"
    },
    "distributor_links": {
      "lcsc": "C2640124",
      "digikey": "NUC123LD4AE0-ND",
      "mouser": "503-NUC123LD4AE0"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T12:28:04Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "NUC123LD4AE0-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "503-NUC123LD4AE0",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PVSS",
        "type": "power_in",
        "description": "PLL ground."
      },
      {
        "number": "2",
        "name": "PB.8",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or TM0 Timer0 event counter input / toggle output."
      },
      {
        "number": "3",
        "name": "PB.14",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or INT0 external interrupt 0 input."
      },
      {
        "number": "4",
        "name": "PA.11",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI1_CLK, SPI2_MOSI0 or I2C1_SCL."
      },
      {
        "number": "5",
        "name": "PA.10",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI1_MISO0, SPI2_MISO0 or I2C1_SDA."
      },
      {
        "number": "6",
        "name": "PB.4",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or UART1_RXD input, SPI2_SS0 or SPI1_SS1."
      },
      {
        "number": "7",
        "name": "PB.5",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or UART1_TXD output or SPI2_CLK."
      },
      {
        "number": "8",
        "name": "PB.6",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or UART1_nRTS output or SPI2_MOSI0."
      },
      {
        "number": "9",
        "name": "PB.7",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or UART1_nCTS input or SPI2_MISO0."
      },
      {
        "number": "10",
        "name": "LDO_CAP",
        "type": "power_out",
        "description": "LDO output pin."
      },
      {
        "number": "11",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply for I/O ports and LDO source for internal PLL and digital function; voltage range 2.5V ~ 5V."
      },
      {
        "number": "12",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "13",
        "name": "USB_VBUS",
        "type": "power_in",
        "description": "USB power supply from USB host or hub."
      },
      {
        "number": "14",
        "name": "USB_VDD33_CAP",
        "type": "power_out",
        "description": "USB internal power regulator output 3.3V decoupling pin."
      },
      {
        "number": "15",
        "name": "USB_D-",
        "type": "bidirectional",
        "description": "USB differential signal D-."
      },
      {
        "number": "16",
        "name": "USB_D+",
        "type": "bidirectional",
        "description": "USB differential signal D+."
      },
      {
        "number": "17",
        "name": "PC.5",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI0_MOSI1 or UART0_TXD output."
      },
      {
        "number": "18",
        "name": "PC.4",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI0_MISO1 or UART0_RXD input."
      },
      {
        "number": "19",
        "name": "PC.3",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI0_MOSI0 or I2S_DO data output."
      },
      {
        "number": "20",
        "name": "PC.2",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI0_MISO0 or I2S_DI data input."
      },
      {
        "number": "21",
        "name": "PC.1",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI0_CLK or I2S_BCLK bit clock."
      },
      {
        "number": "22",
        "name": "PC.0",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI0_SS0 or I2S_LRCLK left/right channel clock."
      },
      {
        "number": "23",
        "name": "PB.10",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI0_SS1 or TM2 Timer2 event counter input / toggle output."
      },
      {
        "number": "24",
        "name": "PB.9",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI1_SS1, TM1 Timer1 event counter input / toggle output, or PWM1 (NUC123xxxAEx only)."
      },
      {
        "number": "25",
        "name": "PC.13",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI1_MOSI1, PWM3 or CLKO frequency divider output."
      },
      {
        "number": "26",
        "name": "PC.12",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI1_MISO1, PWM2 or I2S_MCLK master clock output."
      },
      {
        "number": "27",
        "name": "PC.11",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI1_MOSI0."
      },
      {
        "number": "28",
        "name": "PC.10",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI1_MISO0."
      },
      {
        "number": "29",
        "name": "PC.9",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI1_CLK."
      },
      {
        "number": "30",
        "name": "PC.8",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI1_SS0 or PWM0 (NUC123xxxAEx only)."
      },
      {
        "number": "31",
        "name": "PA.15",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or PWM3, I2S_MCLK master clock output or CLKO frequency divider output."
      },
      {
        "number": "32",
        "name": "PA.14",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or PWM2 output / capture input."
      },
      {
        "number": "33",
        "name": "PA.13",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or PWM1 output / capture input."
      },
      {
        "number": "34",
        "name": "PA.12",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or PWM0 output / capture input."
      },
      {
        "number": "35",
        "name": "ICE_DAT",
        "type": "bidirectional",
        "description": "Serial wired debugger data pin; a 100 kΩ pull-up resistor is recommended."
      },
      {
        "number": "36",
        "name": "ICE_CLK",
        "type": "input",
        "description": "Serial wired debugger clock input pin; a 100 kΩ pull-up resistor is recommended."
      },
      {
        "number": "37",
        "name": "AVDD",
        "type": "power_in",
        "description": "Power supply for internal analog circuit."
      },
      {
        "number": "38",
        "name": "PD.0",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or ADC0 analog input or SPI2_SS0."
      },
      {
        "number": "39",
        "name": "PD.1",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI2_CLK, SPI0_SS1 or ADC1 analog input."
      },
      {
        "number": "40",
        "name": "PD.2",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI2_MISO0, SPI0_MISO1 or ADC2 analog input."
      },
      {
        "number": "41",
        "name": "PD.3",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or SPI2_MOSI0, SPI0_MOSI1 or ADC3 analog input."
      },
      {
        "number": "42",
        "name": "PD.4",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or ADC4 analog input or SPI2_MISO1."
      },
      {
        "number": "43",
        "name": "PD.5",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or ADC5 analog input or SPI2_MOSI1."
      },
      {
        "number": "44",
        "name": "PF.0",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or XT1_OUT external 4~24 MHz high speed crystal output."
      },
      {
        "number": "45",
        "name": "PF.1",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or XT1_IN external 4~24 MHz high speed crystal input."
      },
      {
        "number": "46",
        "name": "nRESET",
        "type": "input",
        "description": "External reset input, low active, resets chip to initial state, with internal pull-up; a 10 kΩ pull-up resistor and 10 μF capacitor are recommended."
      },
      {
        "number": "47",
        "name": "PF.2",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or ADC6 analog input, I2C0_SDA or PS2_DAT."
      },
      {
        "number": "48",
        "name": "PF.3",
        "type": "bidirectional",
        "description": "Digital GPIO pin, or ADC7 analog input, I2C0_SCL or PS2_CLK."
      }
    ],
    "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 5 (PA.10) is marked with an asterisk in the table; the footnote meaning is not in the pr; The datasheet shows only a pin diagram for NUC123LxxANx (page 17); the AEx LQFP48 diagram page was n; LDO_CAP and USB_VDD33_CAP are listed as power/regulator output pins; the type power_out is an interp"
        ],
        "pages_sent": 16,
        "cost_usd": 0.2058,
        "at": "2026-10-23T12:27:39"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/82b297f7a63d68e4dc5dc43b8878f216.pdf",
        "pages": 100,
        "sha256": "4155f3be31484ab1",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 48,
        "described": 48,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "nuc123ld4ae0.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.0,
          9.0,
          1.5
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "9dea352d93177c2904afd7d7b68ea8855ce1ab691f69f8b3e13655600514b6bf",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "nuc123ld4ae0-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.0,
          9.0,
          1.5
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "1b8301dc398ba138c37a1c415f604268c537e1e76269c8092f125bb0041b2c59",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}