ATMEGA164A-AU

{
  "schema_version": 1,
  "type": "component",
  "slug": "atmega164a-au",
  "title": "ATMEGA164A-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": [
    "component",
    "embedded processors & controllers",
    "atmega164a-au",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ATMEGA164A-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/8589018279217647616",
    "parts": {
      "symbol": "atmega164a-au.kicad_sym",
      "footprint": "atmega164a-au.kicad_mod",
      "model_3d": "atmega164a-au-hero.glb",
      "model_3d_plain": "atmega164a-au-etched.glb",
      "model_3d_step": "atmega164a-au-etched.step",
      "model_3d_step_plain": "atmega164a-au.step",
      "lbr": "atmega164a-au.lbr"
    },
    "distributor_links": {
      "lcsc": "C1337270",
      "digikey": "ATMEGA164A-AU-ND",
      "mouser": "556-ATMEGA164A-AU"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T00:36:28Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ATMEGA164A-AU-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "556-ATMEGA164A-AU",
        "status": "found",
        "lifecycle": "Not Recommended for New Designs"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PB5",
        "type": "bidirectional",
        "description": "Port B bit 5 I/O with internal pull-up; alternate functions MOSI, ICP3, PCINT13."
      },
      {
        "number": "2",
        "name": "PB6",
        "type": "bidirectional",
        "description": "Port B bit 6 I/O with internal pull-up; alternate functions MISO, OC3A, PCINT14."
      },
      {
        "number": "3",
        "name": "PB7",
        "type": "bidirectional",
        "description": "Port B bit 7 I/O with internal pull-up; alternate functions SCK, OC3B, PCINT15."
      },
      {
        "number": "4",
        "name": "RESET",
        "type": "input",
        "description": "Active-low reset input; a low level longer than the minimum pulse length generates a reset even if the clock is not running."
      },
      {
        "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 input to the internal clock operating circuit."
      },
      {
        "number": "9",
        "name": "PD0",
        "type": "bidirectional",
        "description": "Port D bit 0 I/O with internal pull-up; alternate functions RXD0, PCINT24 (T3 only on ATmega1284/1284P)."
      },
      {
        "number": "10",
        "name": "PD1",
        "type": "bidirectional",
        "description": "Port D bit 1 I/O with internal pull-up; alternate functions TXD0, PCINT25."
      },
      {
        "number": "11",
        "name": "PD2",
        "type": "bidirectional",
        "description": "Port D bit 2 I/O with internal pull-up; alternate functions RXD1, INT0, PCINT26."
      },
      {
        "number": "12",
        "name": "PD3",
        "type": "bidirectional",
        "description": "Port D bit 3 I/O with internal pull-up; alternate functions TXD1, INT1, PCINT27."
      },
      {
        "number": "13",
        "name": "PD4",
        "type": "bidirectional",
        "description": "Port D bit 4 I/O with internal pull-up; alternate functions XCK1, OC1B, PCINT28."
      },
      {
        "number": "14",
        "name": "PD5",
        "type": "bidirectional",
        "description": "Port D bit 5 I/O with internal pull-up; alternate functions OC1A, PCINT29."
      },
      {
        "number": "15",
        "name": "PD6",
        "type": "bidirectional",
        "description": "Port D bit 6 I/O with internal pull-up; alternate functions OC2B, ICP1, PCINT30."
      },
      {
        "number": "16",
        "name": "PD7",
        "type": "bidirectional",
        "description": "Port D bit 7 I/O with internal pull-up; alternate functions OC2A, PCINT31."
      },
      {
        "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 I/O with internal pull-up; alternate functions SCL (TWI), PCINT16."
      },
      {
        "number": "20",
        "name": "PC1",
        "type": "bidirectional",
        "description": "Port C bit 1 I/O with internal pull-up; alternate functions SDA (TWI), PCINT17."
      },
      {
        "number": "21",
        "name": "PC2",
        "type": "bidirectional",
        "description": "Port C bit 2 I/O with internal pull-up; alternate functions TCK (JTAG), PCINT18."
      },
      {
        "number": "22",
        "name": "PC3",
        "type": "bidirectional",
        "description": "Port C bit 3 I/O with internal pull-up; alternate functions TMS (JTAG), PCINT19."
      },
      {
        "number": "23",
        "name": "PC4",
        "type": "bidirectional",
        "description": "Port C bit 4 I/O with internal pull-up; alternate functions TDO (JTAG), PCINT20."
      },
      {
        "number": "24",
        "name": "PC5",
        "type": "bidirectional",
        "description": "Port C bit 5 I/O with internal pull-up; alternate functions TDI (JTAG), PCINT21."
      },
      {
        "number": "25",
        "name": "PC6",
        "type": "bidirectional",
        "description": "Port C bit 6 I/O with internal pull-up; alternate functions TOSC1 (Timer/Counter2 oscillator), PCINT22."
      },
      {
        "number": "26",
        "name": "PC7",
        "type": "bidirectional",
        "description": "Port C bit 7 I/O with internal pull-up; alternate functions TOSC2 (Timer/Counter2 oscillator), PCINT23."
      },
      {
        "number": "27",
        "name": "AVCC",
        "type": "power_in",
        "description": "Supply voltage for Port A and the ADC; must be connected to VCC even if the ADC is unused, 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 I/O with internal pull-up; ADC7 analog input, PCINT7."
      },
      {
        "number": "31",
        "name": "PA6",
        "type": "bidirectional",
        "description": "Port A bit 6 I/O with internal pull-up; ADC6 analog input, PCINT6."
      },
      {
        "number": "32",
        "name": "PA5",
        "type": "bidirectional",
        "description": "Port A bit 5 I/O with internal pull-up; ADC5 analog input, PCINT5."
      },
      {
        "number": "33",
        "name": "PA4",
        "type": "bidirectional",
        "description": "Port A bit 4 I/O with internal pull-up; ADC4 analog input, PCINT4."
      },
      {
        "number": "34",
        "name": "PA3",
        "type": "bidirectional",
        "description": "Port A bit 3 I/O with internal pull-up; ADC3 analog input, PCINT3."
      },
      {
        "number": "35",
        "name": "PA2",
        "type": "bidirectional",
        "description": "Port A bit 2 I/O with internal pull-up; ADC2 analog input, PCINT2."
      },
      {
        "number": "36",
        "name": "PA1",
        "type": "bidirectional",
        "description": "Port A bit 1 I/O with internal pull-up; ADC1 analog input, PCINT1."
      },
      {
        "number": "37",
        "name": "PA0",
        "type": "bidirectional",
        "description": "Port A bit 0 I/O with internal pull-up; ADC0 analog input, 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 I/O with internal pull-up; alternate functions XCK0, T0, PCINT8."
      },
      {
        "number": "41",
        "name": "PB1",
        "type": "bidirectional",
        "description": "Port B bit 1 I/O with internal pull-up; alternate functions CLKO, T1, PCINT9."
      },
      {
        "number": "42",
        "name": "PB2",
        "type": "bidirectional",
        "description": "Port B bit 2 I/O with internal pull-up; alternate functions AIN0, INT2, PCINT10."
      },
      {
        "number": "43",
        "name": "PB3",
        "type": "bidirectional",
        "description": "Port B bit 3 I/O with internal pull-up; alternate functions AIN1, OC0A, PCINT11."
      },
      {
        "number": "44",
        "name": "PB4",
        "type": "bidirectional",
        "description": "Port B bit 4 I/O with internal pull-up; alternate functions SS, OC0B, PCINT12."
      }
    ],
    "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+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin numbers were read from the TQFP/QFN/MLF drawing on page 11. The -AU suffix is taken as the 44A T; PD0 shows T3 in the figure, but the datasheet says T3 exists only on ATmega1284/1284P, so it was omi",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 115,
        "cost_usd": 1.1244,
        "at": "2026-10-21T00:33:48"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589018279217647616",
        "pages": 672,
        "sha256": "b5ee49362803dc70",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 44,
        "described": 44,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "atmega164a-au.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12,
          12,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "61ecec1147f835d2c9d165c450b1c8d53e65b038f6ca1dac3066a2dfb1bbbb85",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "atmega164a-au-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12,
          12,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c345f3391fcf5849356e1e75e011de6490cd908c929c4ac73bce6ff9eca0846f",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "TQFP-44(10x10)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "44"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "b5ee49362803dc705961f724da40af85ec14fbc03102b1716f0092775a679561",
      "rows": [
        {
          "name": "Input Low Voltage, except XTAL1 and RESET pin",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "VCC = 1.8V - 2.4V",
          "source_page": 326,
          "source": "datasheet"
        },
        {
          "name": "Input Low Voltage, XTAL1 pin",
          "symbol": "VIL1",
          "kind": "electrical",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "VCC = 1.8V - 5.5V",
          "source_page": 326,
          "source": "datasheet"
        },
        {
          "name": "Input Low Voltage, RESET pin",
          "symbol": "VIL2",
          "kind": "electrical",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "VCC = 1.8V - 5.5V",
          "source_page": 326,
          "source": "datasheet"
        },
        {
          "name": "Output Low Voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.9,
          "conditions": "IOL = 20mA, VCC = 5V",
          "source_page": 326,
          "source": "datasheet"
        },
        {
          "name": "Output Low Voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.6,
          "conditions": "IOL = 10mA, VCC = 3V",
          "source_page": 326,
          "source": "datasheet"
        },
        {
          "name": "Output High Voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.2,
          "typ": null,
          "max": null,
          "conditions": "IOH = -20mA, VCC = 5V",
          "source_page": 326,
          "source": "datasheet"
        },
        {
          "name": "Output High Voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.3,
          "typ": null,
          "max": null,
          "conditions": "IOH = -10mA, VCC = 3V",
          "source_page": 326,
          "source": "datasheet"
        },
        {
          "name": "Input Leakage Current I/O Pin (absolute value)",
          "symbol": "IIL",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "VCC = 5.5V, pin low",
          "source_page": 326,
          "source": "datasheet"
        },
        {
          "name": "Reset Pull-up Resistor",
          "symbol": "RRST",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 30,
          "typ": null,
          "max": 60,
          "conditions": "",
          "source_page": 326,
          "source": "datasheet"
        },
        {
          "name": "I/O Pin Pull-up Resistor",
          "symbol": "RPU",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 20,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 326,
          "source": "datasheet"
        },
        {
          "name": "Analog Comparator Input Offset Voltage",
          "symbol": "VACIO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "VCC = 5V, Vin = VCC/2",
          "source_page": 326,
          "source": "datasheet"
        },
        {
          "name": "Analog Comparator Input Offset Voltage",
          "symbol": "VACIO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 60,
          "conditions": "VCC < 3.6V, Vin < 0.5V",
          "source_page": 327,
          "source": "datasheet"
        },
        {
          "name": "Analog Comparator Input Offset Voltage",
          "symbol": "VACIO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "VCC > 3.6V, Vin < 0.5V",
          "source_page": 327,
          "source": "datasheet"
        },
        {
          "name": "Analog Comparator Input Leakage Current",
          "symbol": "IACLK",
          "kind": "electrical",
          "unit": "nA",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "VCC = 5V, Vin = VCC/2",
          "source_page": 327,
          "source": "datasheet"
        },
        {
          "name": "Analog Comparator Propagation Delay",
          "symbol": "tACID",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 750,
          "conditions": "VCC = 2.7V",
          "source_page": 327,
          "source": "datasheet"
        },
        {
          "name": "Analog Comparator Propagation Delay",
          "symbol": "tACID",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "VCC = 4.0V",
          "source_page": 327,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Current, Active mode",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.3,
          "max": 0.55,
          "conditions": "Active 1MHz, VCC = 2V",
          "source_page": 328,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Current, Active mode",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.4,
          "max": 3.5,
          "conditions": "Active 4MHz, VCC = 3V",
          "source_page": 328,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Current, Active mode",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 4.8,
          "max": 12,
          "conditions": "Active 8MHz, VCC = 5V",
          "source_page": 328,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Current, Idle mode",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.07,
          "max": 0.5,
          "conditions": "Idle 1MHz, VCC = 2V",
          "source_page": 328,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Current, Idle mode",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.25,
          "max": 1.5,
          "conditions": "Idle 4MHz, VCC = 3V",
          "source_page": 328,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Current, Idle mode",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1,
          "max": 5.5,
          "conditions": "Idle 8MHz, VCC = 5V",
          "source_page": 328,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Current, Power-down mode",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 5,
          "max": 15,
          "conditions": "Power-down mode, WDT enabled, VCC = 3V",
          "source_page": 328,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Current, Power-down mode",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.17,
          "max": 3,
          "conditions": "Power-down mode, WDT disabled, VCC = 3V",
          "source_page": 328,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Current, Power-save mode",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.5,
          "max": null,
          "conditions": "Power-save mode, 32kHz TOSC enabled, VCC = 1.8V",
          "source_page": 328,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Current, Power-save mode",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.6,
          "max": null,
          "conditions": "Power-save mode, 32kHz TOSC enabled, VCC = 3V",
          "source_page": 328,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 326,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 326,
          "source": "datasheet"
        },
        {
          "name": "Voltage on any pin except RESET with respect to ground",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 326,
          "source": "datasheet"
        },
        {
          "name": "Voltage on RESET with respect to ground",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
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