ATMEGA1284P-AU

{
  "schema_version": 1,
  "type": "component",
  "slug": "atmega1284p-au",
  "title": "ATMEGA1284P-AU",
  "brief": "Microchip Tech Microcontrollers (MCU/MPU/SOC), TQFP-44(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": [
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    "embedded processors & controllers",
    "atmega1284p-au",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "ATMEGA1284P-AU",
    "manufacturer": "Microchip Tech",
    "package": "TQFP-44(10x10)",
    "pin_count": 44,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586175653775618048",
    "parts": {
      "symbol": "atmega1284p-au.kicad_sym",
      "footprint": "atmega1284p-au.kicad_mod",
      "model_3d": "atmega1284p-au-hero.glb",
      "model_3d_plain": "atmega1284p-au-etched.glb",
      "model_3d_step": "atmega1284p-au-etched.step",
      "model_3d_step_plain": "atmega1284p-au.step",
      "lbr": "atmega1284p-au.lbr"
    },
    "distributor_links": {
      "lcsc": "C33575",
      "digikey": "ATMEGA1284P-AU-ND",
      "mouser": "556-ATMEGA1284P-AU"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T05:27:21Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ATMEGA1284P-AU-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "556-ATMEGA1284P-AU",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PB5",
        "type": "bidirectional",
        "description": "Port B bit 5 is a bidirectional I/O with internal pull-up, also serving PCINT13 and SPI MOSI."
      },
      {
        "number": "2",
        "name": "PB6",
        "type": "bidirectional",
        "description": "Port B bit 6 is a bidirectional I/O with internal pull-up, also serving PCINT14 and SPI MISO."
      },
      {
        "number": "3",
        "name": "PB7",
        "type": "bidirectional",
        "description": "Port B bit 7 is a bidirectional I/O with internal pull-up, also serving PCINT15 and SPI SCK."
      },
      {
        "number": "4",
        "name": "RESET",
        "type": "input",
        "description": "A low level on this pin for longer than the minimum pulse length generates a reset, even if the clock is not running; shorter pulses are not guaranteed to reset the device."
      },
      {
        "number": "5",
        "name": "VCC",
        "type": "power_in",
        "description": "Digital supply voltage."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "7",
        "name": "XTAL2",
        "type": "output",
        "description": "Output from the inverting oscillator amplifier."
      },
      {
        "number": "8",
        "name": "XTAL1",
        "type": "input",
        "description": "Input to the inverting oscillator amplifier and to the internal clock operating circuit."
      },
      {
        "number": "9",
        "name": "PD0",
        "type": "bidirectional",
        "description": "Port D bit 0 is a bidirectional I/O with internal pull-up, also serving PCINT24 and USART0 RxD0."
      },
      {
        "number": "10",
        "name": "PD1",
        "type": "bidirectional",
        "description": "Port D bit 1 is a bidirectional I/O with internal pull-up, also serving PCINT25 and USART0 TxD0."
      },
      {
        "number": "11",
        "name": "PD2",
        "type": "bidirectional",
        "description": "Port D bit 2 is a bidirectional I/O with internal pull-up, also serving external interrupt INT0, PCINT26 and USART1 RxD1."
      },
      {
        "number": "12",
        "name": "PD3",
        "type": "bidirectional",
        "description": "Port D bit 3 is a bidirectional I/O with internal pull-up, also serving external interrupt INT1, PCINT27 and USART1 TxD1."
      },
      {
        "number": "13",
        "name": "PD4",
        "type": "bidirectional",
        "description": "Port D bit 4 is a bidirectional I/O with internal pull-up, also serving PCINT28, Timer/Counter1 OC1B and USART1 XCK1."
      },
      {
        "number": "14",
        "name": "PD5",
        "type": "bidirectional",
        "description": "Port D bit 5 is a bidirectional I/O with internal pull-up, also serving PCINT29 and Timer/Counter1 OC1A."
      },
      {
        "number": "15",
        "name": "PD6",
        "type": "bidirectional",
        "description": "Port D bit 6 is a bidirectional I/O with internal pull-up, also serving PCINT30, Timer/Counter2 OC2B and Timer/Counter1 input capture ICP1."
      },
      {
        "number": "16",
        "name": "PD7",
        "type": "bidirectional",
        "description": "Port D bit 7 is a bidirectional I/O with internal pull-up, also serving PCINT31 and Timer/Counter2 OC2A."
      },
      {
        "number": "17",
        "name": "VCC",
        "type": "power_in",
        "description": "Digital supply voltage."
      },
      {
        "number": "18",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "19",
        "name": "PC0",
        "type": "bidirectional",
        "description": "Port C bit 0 is a bidirectional I/O with internal pull-up, also serving PCINT16 and TWI SCL."
      },
      {
        "number": "20",
        "name": "PC1",
        "type": "bidirectional",
        "description": "Port C bit 1 is a bidirectional I/O with internal pull-up, also serving PCINT17 and TWI SDA."
      },
      {
        "number": "21",
        "name": "PC2",
        "type": "bidirectional",
        "description": "Port C bit 2 is a bidirectional I/O with internal pull-up, also serving PCINT18 and JTAG TCK."
      },
      {
        "number": "22",
        "name": "PC3",
        "type": "bidirectional",
        "description": "Port C bit 3 is a bidirectional I/O with internal pull-up, also serving PCINT19 and JTAG TMS."
      },
      {
        "number": "23",
        "name": "PC4",
        "type": "bidirectional",
        "description": "Port C bit 4 is a bidirectional I/O with internal pull-up, also serving PCINT20 and JTAG TDO."
      },
      {
        "number": "24",
        "name": "PC5",
        "type": "bidirectional",
        "description": "Port C bit 5 is a bidirectional I/O with internal pull-up, also serving PCINT21 and JTAG TDI."
      },
      {
        "number": "25",
        "name": "PC6",
        "type": "bidirectional",
        "description": "Port C bit 6 is a bidirectional I/O with internal pull-up, also serving PCINT22 and the 32.768 kHz oscillator TOSC1."
      },
      {
        "number": "26",
        "name": "PC7",
        "type": "bidirectional",
        "description": "Port C bit 7 is a bidirectional I/O with internal pull-up, also serving PCINT23 and the 32.768 kHz oscillator TOSC2."
      },
      {
        "number": "27",
        "name": "AVCC",
        "type": "power_in",
        "description": "Supply voltage pin for Port A and the ADC; it should be externally connected to VCC even if the ADC is not used, and through a low-pass filter if the ADC is used."
      },
      {
        "number": "28",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "29",
        "name": "AREF",
        "type": "input",
        "description": "Analog reference pin for the Analog-to-digital Converter."
      },
      {
        "number": "30",
        "name": "PA7",
        "type": "bidirectional",
        "description": "Port A bit 7 is a bidirectional I/O with internal pull-up that also serves as ADC7 analog input and PCINT7."
      },
      {
        "number": "31",
        "name": "PA6",
        "type": "bidirectional",
        "description": "Port A bit 6 is a bidirectional I/O with internal pull-up that also serves as ADC6 analog input and PCINT6."
      },
      {
        "number": "32",
        "name": "PA5",
        "type": "bidirectional",
        "description": "Port A bit 5 is a bidirectional I/O with internal pull-up that also serves as ADC5 analog input and PCINT5."
      },
      {
        "number": "33",
        "name": "PA4",
        "type": "bidirectional",
        "description": "Port A bit 4 is a bidirectional I/O with internal pull-up that also serves as ADC4 analog input and PCINT4."
      },
      {
        "number": "34",
        "name": "PA3",
        "type": "bidirectional",
        "description": "Port A bit 3 is a bidirectional I/O with internal pull-up that also serves as ADC3 analog input and PCINT3."
      },
      {
        "number": "35",
        "name": "PA2",
        "type": "bidirectional",
        "description": "Port A bit 2 is a bidirectional I/O with internal pull-up that also serves as ADC2 analog input and PCINT2."
      },
      {
        "number": "36",
        "name": "PA1",
        "type": "bidirectional",
        "description": "Port A bit 1 is a bidirectional I/O with internal pull-up that also serves as ADC1 analog input and PCINT1."
      },
      {
        "number": "37",
        "name": "PA0",
        "type": "bidirectional",
        "description": "Port A bit 0 is a bidirectional I/O with internal pull-up that also serves as ADC0 analog input and PCINT0."
      },
      {
        "number": "38",
        "name": "VCC",
        "type": "power_in",
        "description": "Digital supply voltage."
      },
      {
        "number": "39",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "40",
        "name": "PB0",
        "type": "bidirectional",
        "description": "Port B bit 0 is a bidirectional I/O with internal pull-up, also serving PCINT8, Timer/Counter0 T0 and USART0 XCK0."
      },
      {
        "number": "41",
        "name": "PB1",
        "type": "bidirectional",
        "description": "Port B bit 1 is a bidirectional I/O with internal pull-up, also serving PCINT9, CLKO and Timer/Counter1 T1."
      },
      {
        "number": "42",
        "name": "PB2",
        "type": "bidirectional",
        "description": "Port B bit 2 is a bidirectional I/O with internal pull-up, also serving external interrupt INT2, PCINT10 and analog comparator input AIN0."
      },
      {
        "number": "43",
        "name": "PB3",
        "type": "bidirectional",
        "description": "Port B bit 3 is a bidirectional I/O with internal pull-up, also serving PCINT11, analog comparator input AIN1 and Timer/Counter0 OC0A."
      },
      {
        "number": "44",
        "name": "PB4",
        "type": "bidirectional",
        "description": "Port B bit 4 is a bidirectional I/O with internal pull-up, also serving PCINT12, Timer/Counter0 OC0B and SPI SS."
      }
    ],
    "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: Table 6-1 column header reads '32-pin TQFP/QFN/MLF Pin #' but the column is numbered 1-44 with 44 en; The TQFP-44 pin numbering is not printed explicitly beside the 44-lead TQFP drawing (section 8.2 has; Datasheet covers ATmega1284P (and ordering codes ATmega1284PA-AU). The MPN requested is ATMEGA1284P-",
          "1/44 pins cited to the wrong page (name found elsewhere): ['8:XTAL1@p9']",
          "1/44 pin names appear NOWHERE in the datasheet text: ['7:XTAL2@p9']"
        ],
        "pages_sent": 16,
        "cost_usd": 0.1088,
        "at": "2026-10-18T05:25:06"
      },
      "datasheet": {
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        "pages": 16,
        "sha256": "e9c076b4cf9d8569",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 44,
        "described": 44,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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        "sha256": "61ecec1147f835d2c9d165c450b1c8d53e65b038f6ca1dac3066a2dfb1bbbb85",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "TQFP-44(10x10)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "44"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "e9c076b4cf9d856920cbcac9d32c824b9247c5f687dcfc20122d95e3135f3b97",
      "rows": [
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          "kind": "recommended_operating",
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          "min": 1.8,
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          "max": 5.5,
          "conditions": "Operating Voltage (features list; ordering table lists 1.8 - 5.5 V)",
          "source_page": 2,
          "source": "datasheet"
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          "symbol": "",
          "kind": "recommended_operating",
          "unit": "MHz",
          "min": 0,
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          "max": 4,
          "conditions": "@ 1.8V - 5.5V",
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          "kind": "recommended_operating",
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        {
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          "conditions": "@ 4.5V - 5.5V",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
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  "discovery_triggers": [
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  "discovery_pitch": "ATMEGA1284P-AU (Microchip Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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