AT90USB1287-AUR

{
  "schema_version": 1,
  "type": "component",
  "slug": "at90usb1287-aur",
  "title": "AT90USB1287-AUR",
  "brief": "Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), TQFP-64(14x14). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.1",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "single chip microcomputer-microcontroller",
    "at90usb1287-aur",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "AT90USB1287-AUR",
    "manufacturer": "Microchip Tech",
    "package": "TQFP-64(14x14)",
    "pin_count": 64,
    "category": "Single Chip Microcomputer/Microcontroller",
    "subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/d37417ab7e06e1004a1b9affb01a6dea.pdf",
    "parts": {
      "symbol": "at90usb1287-aur.kicad_sym",
      "footprint": "at90usb1287-aur.kicad_mod",
      "model_3d": "at90usb1287-aur-hero.glb",
      "model_3d_plain": "at90usb1287-aur.glb",
      "model_3d_step": "at90usb1287-aur-etched.step",
      "model_3d_step_plain": "at90usb1287-aur.step",
      "lbr": "at90usb1287-aur.lbr"
    },
    "distributor_links": {
      "lcsc": "C619282",
      "digikey": "AT90USB1287-AURTR-ND",
      "mouser": "556-AT90USB1287-AUR"
    },
    "distributor_check": {
      "checked_at": "2026-11-08T00:41:22Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "AT90USB1287-AURTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "556-AT90USB1287-AUR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PE6",
        "type": "bidirectional",
        "description": "Port E bit 6, bidirectional I/O with internal pull-up, alternate functions INT.6 and AIN.0."
      },
      {
        "number": "2",
        "name": "PE7",
        "type": "bidirectional",
        "description": "Port E bit 7, bidirectional I/O with internal pull-up, alternate functions INT.7, AIN.1 and UVcon."
      },
      {
        "number": "3",
        "name": "UVCC",
        "type": "power_in",
        "description": "USB pads internal regulator input supply voltage."
      },
      {
        "number": "4",
        "name": "D-",
        "type": "bidirectional",
        "description": "USB full/low speed negative data upstream port; connect to the USB D- connector pin with a serial 22 ohm resistor."
      },
      {
        "number": "5",
        "name": "D+",
        "type": "bidirectional",
        "description": "USB full/low speed positive data upstream port; connect to the USB D+ connector pin with a serial 22 ohm resistor."
      },
      {
        "number": "6",
        "name": "UGND",
        "type": "power_in",
        "description": "USB pads ground."
      },
      {
        "number": "7",
        "name": "UCAP",
        "type": "power_out",
        "description": "USB pads internal regulator output supply voltage; connect an external 1 uF capacitor."
      },
      {
        "number": "8",
        "name": "VBUS",
        "type": "power_in",
        "description": "USB VBUS monitor and OTG negotiations."
      },
      {
        "number": "9",
        "name": "PE3",
        "type": "bidirectional",
        "description": "Port E bit 3, bidirectional I/O with internal pull-up, alternate function IUID."
      },
      {
        "number": "10",
        "name": "PB0",
        "type": "bidirectional",
        "description": "Port B bit 0, bidirectional I/O with internal pull-up, alternate functions SS (SPI slave select input) and PCINT0."
      },
      {
        "number": "11",
        "name": "PB1",
        "type": "bidirectional",
        "description": "Port B bit 1, bidirectional I/O with internal pull-up, alternate functions SCK (SPI clock) and PCINT1."
      },
      {
        "number": "12",
        "name": "PB2",
        "type": "bidirectional",
        "description": "Port B bit 2, bidirectional I/O with internal pull-up, alternate functions PDI/MOSI (SPI data) and PCINT2."
      },
      {
        "number": "13",
        "name": "PB3",
        "type": "bidirectional",
        "description": "Port B bit 3, bidirectional I/O with internal pull-up, alternate functions PDO/MISO (SPI data) and PCINT3."
      },
      {
        "number": "14",
        "name": "PB4",
        "type": "bidirectional",
        "description": "Port B bit 4, bidirectional I/O with internal pull-up, alternate functions OC2A and PCINT4."
      },
      {
        "number": "15",
        "name": "PB5",
        "type": "bidirectional",
        "description": "Port B bit 5, bidirectional I/O with internal pull-up, alternate functions OC1A and PCINT5."
      },
      {
        "number": "16",
        "name": "PB6",
        "type": "bidirectional",
        "description": "Port B bit 6, bidirectional I/O with internal pull-up, alternate functions OC1B and PCINT6."
      },
      {
        "number": "17",
        "name": "PB7",
        "type": "bidirectional",
        "description": "Port B bit 7, bidirectional I/O with internal pull-up, alternate functions OC0A, OC1C and PCINT7."
      },
      {
        "number": "18",
        "name": "PE4",
        "type": "bidirectional",
        "description": "Port E bit 4, bidirectional I/O with internal pull-up, alternate functions INT4 and TOSC1."
      },
      {
        "number": "19",
        "name": "PE5",
        "type": "bidirectional",
        "description": "Port E bit 5, bidirectional I/O with internal pull-up, alternate functions INT.5 and TOSC2."
      },
      {
        "number": "20",
        "name": "RESET",
        "type": "input",
        "description": "Reset input; a low level longer than the minimum pulse length generates a reset even if the clock is not running."
      },
      {
        "number": "21",
        "name": "VCC",
        "type": "power_in",
        "description": "Digital supply voltage."
      },
      {
        "number": "22",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "23",
        "name": "XTAL2",
        "type": "output",
        "description": "Output from the inverting oscillator amplifier."
      },
      {
        "number": "24",
        "name": "XTAL1",
        "type": "input",
        "description": "Input to the inverting oscillator amplifier and input to the internal clock operating circuit."
      },
      {
        "number": "25",
        "name": "PD0",
        "type": "bidirectional",
        "description": "Port D bit 0, bidirectional I/O with internal pull-up, alternate functions INT0, SCL (TWI clock) and OC0B."
      },
      {
        "number": "26",
        "name": "PD1",
        "type": "bidirectional",
        "description": "Port D bit 1, bidirectional I/O with internal pull-up, alternate functions INT1, SDA (TWI data) and OC2B."
      },
      {
        "number": "27",
        "name": "PD2",
        "type": "bidirectional",
        "description": "Port D bit 2, bidirectional I/O with internal pull-up, alternate functions INT2 and RXD1."
      },
      {
        "number": "28",
        "name": "PD3",
        "type": "bidirectional",
        "description": "Port D bit 3, bidirectional I/O with internal pull-up, alternate functions INT3 and TXD1."
      },
      {
        "number": "29",
        "name": "PD4",
        "type": "bidirectional",
        "description": "Port D bit 4, bidirectional I/O with internal pull-up, alternate function ICP1 (Timer/Counter1 input capture)."
      },
      {
        "number": "30",
        "name": "PD5",
        "type": "bidirectional",
        "description": "Port D bit 5, bidirectional I/O with internal pull-up, alternate function XCK1 (USART1 external clock)."
      },
      {
        "number": "31",
        "name": "PD6",
        "type": "bidirectional",
        "description": "Port D bit 6, bidirectional I/O with internal pull-up, alternate function T1 (Timer/Counter1 clock input)."
      },
      {
        "number": "32",
        "name": "PD7",
        "type": "bidirectional",
        "description": "Port D bit 7, bidirectional I/O with internal pull-up, alternate function T0 (Timer/Counter0 clock input)."
      },
      {
        "number": "33",
        "name": "PE0",
        "type": "bidirectional",
        "description": "Port E bit 0, bidirectional I/O with internal pull-up, alternate function WR (external memory write strobe)."
      },
      {
        "number": "34",
        "name": "PE1",
        "type": "bidirectional",
        "description": "Port E bit 1, bidirectional I/O with internal pull-up, alternate function RD (external memory read strobe)."
      },
      {
        "number": "35",
        "name": "PC0",
        "type": "bidirectional",
        "description": "Port C bit 0, bidirectional I/O with internal pull-up, alternate function A8 (external memory address)."
      },
      {
        "number": "36",
        "name": "PC1",
        "type": "bidirectional",
        "description": "Port C bit 1, bidirectional I/O with internal pull-up, alternate function A9 (external memory address)."
      },
      {
        "number": "37",
        "name": "PC2",
        "type": "bidirectional",
        "description": "Port C bit 2, bidirectional I/O with internal pull-up, alternate function A10 (external memory address)."
      },
      {
        "number": "38",
        "name": "PC3",
        "type": "bidirectional",
        "description": "Port C bit 3, bidirectional I/O with internal pull-up, alternate functions A11 and T3."
      },
      {
        "number": "39",
        "name": "PC4",
        "type": "bidirectional",
        "description": "Port C bit 4, bidirectional I/O with internal pull-up, alternate functions A12 and OC3C."
      },
      {
        "number": "40",
        "name": "PC5",
        "type": "bidirectional",
        "description": "Port C bit 5, bidirectional I/O with internal pull-up, alternate functions A13 and OC3B."
      },
      {
        "number": "41",
        "name": "PC6",
        "type": "bidirectional",
        "description": "Port C bit 6, bidirectional I/O with internal pull-up, alternate functions A14 and OC3A."
      },
      {
        "number": "42",
        "name": "PC7",
        "type": "bidirectional",
        "description": "Port C bit 7, bidirectional I/O with internal pull-up, alternate functions A15, IC3 and CLKO (divided system clock)."
      },
      {
        "number": "43",
        "name": "PE2",
        "type": "bidirectional",
        "description": "Port E bit 2, bidirectional I/O with internal pull-up, alternate functions ALE and HWB."
      },
      {
        "number": "44",
        "name": "PA7",
        "type": "bidirectional",
        "description": "Port A bit 7, bidirectional I/O with internal pull-up, alternate function AD7 (external memory address/data)."
      },
      {
        "number": "45",
        "name": "PA6",
        "type": "bidirectional",
        "description": "Port A bit 6, bidirectional I/O with internal pull-up, alternate function AD6 (external memory address/data)."
      },
      {
        "number": "46",
        "name": "PA5",
        "type": "bidirectional",
        "description": "Port A bit 5, bidirectional I/O with internal pull-up, alternate function AD5 (external memory address/data)."
      },
      {
        "number": "47",
        "name": "PA4",
        "type": "bidirectional",
        "description": "Port A bit 4, bidirectional I/O with internal pull-up, alternate function AD4 (external memory address/data)."
      },
      {
        "number": "48",
        "name": "PA3",
        "type": "bidirectional",
        "description": "Port A bit 3, bidirectional I/O with internal pull-up, alternate function AD3 (external memory address/data)."
      },
      {
        "number": "49",
        "name": "PA2",
        "type": "bidirectional",
        "description": "Port A bit 2, bidirectional I/O with internal pull-up, alternate function AD2 (external memory address/data)."
      },
      {
        "number": "50",
        "name": "PA1",
        "type": "bidirectional",
        "description": "Port A bit 1, bidirectional I/O with internal pull-up, alternate function AD1 (external memory address/data)."
      },
      {
        "number": "51",
        "name": "PA0",
        "type": "bidirectional",
        "description": "Port A bit 0, bidirectional I/O with internal pull-up, alternate function AD0 (external memory address/data)."
      },
      {
        "number": "52",
        "name": "VCC",
        "type": "power_in",
        "description": "Digital supply voltage."
      },
      {
        "number": "53",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "54",
        "name": "PF7",
        "type": "bidirectional",
        "description": "Port F bit 7, ADC7 analog input or I/O, also JTAG TDI with pull-up active even during reset when JTAG is enabled."
      },
      {
        "number": "55",
        "name": "PF6",
        "type": "bidirectional",
        "description": "Port F bit 6, ADC6 analog input or I/O, also JTAG TDO."
      },
      {
        "number": "56",
        "name": "PF5",
        "type": "bidirectional",
        "description": "Port F bit 5, ADC5 analog input or I/O, also JTAG TMS with pull-up active even during reset when JTAG is enabled."
      },
      {
        "number": "57",
        "name": "PF4",
        "type": "bidirectional",
        "description": "Port F bit 4, ADC4 analog input or I/O, also JTAG TCK with pull-up active even during reset when JTAG is enabled."
      },
      {
        "number": "58",
        "name": "PF3",
        "type": "bidirectional",
        "description": "Port F bit 3, ADC3 analog input to the A/D converter or I/O."
      },
      {
        "number": "59",
        "name": "PF2",
        "type": "bidirectional",
        "description": "Port F bit 2, ADC2 analog input to the A/D converter or I/O."
      },
      {
        "number": "60",
        "name": "PF1",
        "type": "bidirectional",
        "description": "Port F bit 1, ADC1 analog input to the A/D converter or I/O."
      },
      {
        "number": "61",
        "name": "PF0",
        "type": "bidirectional",
        "description": "Port F bit 0, ADC0 analog input to the A/D converter or I/O."
      },
      {
        "number": "62",
        "name": "AREF",
        "type": "input",
        "description": "Analog reference pin for the A/D converter."
      },
      {
        "number": "63",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "64",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply voltage."
      }
    ],
    "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: The TQFP pinout figure (page 3) was extracted as an unnumbered list of labels in scrambled order, wi; The datasheet text gives no description for AREF, XTAL2 or PE0-PE3 beyond the figure labels. The ARE; The ordering page lists AT90USB1287-AU for the 64-lead 14x14 mm TQFP. The -AUR suffix (tape and reel",
          "44/64 pins cited to the wrong page (name found elsewhere): ['10:PB0@p79', '13:PB3@p79', '14:PB4@p79', '15:PB5@p79']"
        ],
        "pages_sent": 58,
        "cost_usd": 0.3461,
        "at": "2026-11-08T00:41:09"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/d37417ab7e06e1004a1b9affb01a6dea.pdf",
        "pages": 456,
        "sha256": "35fbe95dd74314a9",
        "source_tier": "mfr"
      },
      "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": "at90usb1287-aur.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          16,
          16,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "ba925bf5c4254d55a029c50945e4157a8371aaac29d2dc73cee8d71f59249e8c",
        "checked": "2026-11-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "at90usb1287-aur-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          16,
          16,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "244a64f04d100a33fe1f4aac97e648bdcc35e7bcb4e9f6b11734265b13de1012",
        "checked": "2026-11-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "TQFP-64(14x14)",
      "Category": "Single Chip Microcomputer/Microcontroller",
      "Pins": "64"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "35fbe95dd74314a933d5a602a6fc4ae23bfff2a81936ff1764db2a0a0d18fc59",
      "rows": [
        {
          "name": "Operating supply voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.7,
          "typ": null,
          "max": 5.5,
          "conditions": "Industrial range; max 16 MHz speed",
          "source_page": 429,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "Industrial range",
          "source_page": 390,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 390,
          "source": "datasheet"
        },
        {
          "name": "Voltage on any pin except RESET and VBUS",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "With respect to ground; max printed as VCC+0.5V",
          "source_page": 390,
          "source": "datasheet"
        },
        {
          "name": "Voltage on RESET",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 13,
          "conditions": "With respect to ground",
          "source_page": 390,
          "source": "datasheet"
        },
        {
          "name": "Voltage on VBUS",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 6,
          "conditions": "With respect to ground",
          "source_page": 390,
          "source": "datasheet"
        },
        {
          "name": "Maximum operating voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 390,
          "source": "datasheet"
        },
        {
          "name": "DC current per I/O pin",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 390,
          "source": "datasheet"
        },
        {
          "name": "DC current VCC and GND pins",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "",
          "source_page": 390,
          "source": "datasheet"
        },
        {
          "name": "Input low voltage, except XTAL1 and RESET pin",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "VCC = 2.7V - 5.5V; max printed as 0.2VCC",
          "source_page": 390,
          "source": "datasheet"
        },
        {
          "name": "Input low voltage, XTAL1 pin",
          "symbol": "VIL1",
          "kind": "electrical",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "VCC = 2.7V - 5.5V; max printed as 0.1VCC",
          "source_page": 390,
          "source": "datasheet"
        },
        {
          "name": "Input low voltage, RESET pin",
          "symbol": "VIL2",
          "kind": "electrical",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "VCC = 2.7V - 5.5V; max printed as 0.1VCC",
          "source_page": 390,
          "source": "datasheet"
        },
        {
          "name": "Output low voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.7,
          "conditions": "IOL = 10mA, VCC = 5V",
          "source_page": 390,
          "source": "datasheet"
        },
        {
          "name": "Output low voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "IOL = 5mA, VCC = 3V",
          "source_page": 390,
          "source": "datasheet"
        },
        {
          "name": "Output high voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.2,
          "typ": null,
          "max": 4.5,
          "conditions": "IOH = -20mA, VCC = 5V",
          "source_page": 390,
          "source": "datasheet"
        },
        {
          "name": "Output high voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.3,
          "typ": null,
          "max": 2.6,
          "conditions": "IOH = -10mA, VCC = 3V",
          "source_page": 390,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current I/O pin (low)",
          "symbol": "IIL",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "VCC = 5.5V, pin low (absolute value)",
          "source_page": 390,
          "source": "datasheet"
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