ATMEGA164P-20AUR

{
  "slug": "atmega164p-20aur",
  "version": "0.1.1",
  "type": "component",
  "description": "Microchip Tech Pre-ordered MCUs, TQFP-44(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
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    "embedded processors & controllers",
    "atmega164p-20aur",
    "factory-2.0.0",
    "extractor-text"
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  "dependencies": {},
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    "atmega164p-20aur.step",
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    "docs/atmega164p-20aur-datasheet.pdf",
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  "component": {
    "mpn": "ATMEGA164P-20AUR",
    "manufacturer": "Microchip Tech",
    "package": "TQFP-44(10x10)",
    "pin_count": 44,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Pre-ordered MCUs",
    "datasheet": "https://ww1.microchip.com/downloads/en/DeviceDoc/ATmega164P-324P-644P-Data-Sheet-40002071A.pdf",
    "parts": {
      "symbol": "atmega164p-20aur.kicad_sym",
      "footprint": "atmega164p-20aur.kicad_mod",
      "model_3d": "atmega164p-20aur-hero.glb",
      "model_3d_plain": "atmega164p-20aur.glb",
      "model_3d_step": "atmega164p-20aur-etched.step",
      "model_3d_step_plain": "atmega164p-20aur.step",
      "lbr": "atmega164p-20aur.lbr"
    },
    "distributor_links": {
      "lcsc": "C1339362",
      "digikey": "ATMEGA164P-20AURTR-ND",
      "mouser": "556-ATMEGA164P-20AUR"
    },
    "distributor_check": {
      "checked_at": "2026-11-05T17:05:24Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ATMEGA164P-20AURTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "556-ATMEGA164P-20AUR",
        "status": "found",
        "lifecycle": "Not Recommended for New Designs"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PB5",
        "type": "bidirectional",
        "description": "Port B bit 5, 8-bit bi-directional I/O with internal pull-up; alternate functions MOSI (SPI master data out/slave data in) and PCINT13."
      },
      {
        "number": "2",
        "name": "PB6",
        "type": "bidirectional",
        "description": "Port B bit 6, bi-directional I/O with internal pull-up; alternate functions MISO (SPI master data in/slave data out) and PCINT14."
      },
      {
        "number": "3",
        "name": "PB7",
        "type": "bidirectional",
        "description": "Port B bit 7, bi-directional I/O with internal pull-up; alternate functions SCK (SPI clock) and PCINT15."
      },
      {
        "number": "4",
        "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": "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, bi-directional I/O with internal pull-up; alternate functions RXD0 (USART0 receive) and PCINT24."
      },
      {
        "number": "10",
        "name": "PD1",
        "type": "bidirectional",
        "description": "Port D bit 1, bi-directional I/O with internal pull-up; alternate functions TXD0 (USART0 transmit) and PCINT25."
      },
      {
        "number": "11",
        "name": "PD2",
        "type": "bidirectional",
        "description": "Port D bit 2, bi-directional I/O with internal pull-up; alternate functions INT0, RXD1 (USART1 receive) and PCINT26."
      },
      {
        "number": "12",
        "name": "PD3",
        "type": "bidirectional",
        "description": "Port D bit 3, bi-directional I/O with internal pull-up; alternate functions INT1, TXD1 (USART1 transmit) and PCINT27."
      },
      {
        "number": "13",
        "name": "PD4",
        "type": "bidirectional",
        "description": "Port D bit 4, bi-directional I/O with internal pull-up; alternate functions OC1B, XCK1 (USART1 external clock) and PCINT28."
      },
      {
        "number": "14",
        "name": "PD5",
        "type": "bidirectional",
        "description": "Port D bit 5, bi-directional I/O with internal pull-up; alternate functions OC1A and PCINT29."
      },
      {
        "number": "15",
        "name": "PD6",
        "type": "bidirectional",
        "description": "Port D bit 6, bi-directional I/O with internal pull-up; alternate functions ICP1 (Timer/Counter1 input capture), OC2B and PCINT30."
      },
      {
        "number": "16",
        "name": "PD7",
        "type": "bidirectional",
        "description": "Port D bit 7, bi-directional I/O with internal pull-up; alternate functions OC2A and 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, bi-directional I/O with internal pull-up; alternate functions SCL (2-wire serial clock) and PCINT16."
      },
      {
        "number": "20",
        "name": "PC1",
        "type": "bidirectional",
        "description": "Port C bit 1, bi-directional I/O with internal pull-up; alternate functions SDA (2-wire serial data) and PCINT17."
      },
      {
        "number": "21",
        "name": "PC2",
        "type": "bidirectional",
        "description": "Port C bit 2, bi-directional I/O with internal pull-up; alternate functions TCK (JTAG) and PCINT18."
      },
      {
        "number": "22",
        "name": "PC3",
        "type": "bidirectional",
        "description": "Port C bit 3, bi-directional I/O with internal pull-up; alternate functions TMS (JTAG) and PCINT19."
      },
      {
        "number": "23",
        "name": "PC4",
        "type": "bidirectional",
        "description": "Port C bit 4, bi-directional I/O with internal pull-up; alternate functions TDO (JTAG) and PCINT20."
      },
      {
        "number": "24",
        "name": "PC5",
        "type": "bidirectional",
        "description": "Port C bit 5, bi-directional I/O with internal pull-up; alternate functions TDI (JTAG) and PCINT21."
      },
      {
        "number": "25",
        "name": "PC6",
        "type": "bidirectional",
        "description": "Port C bit 6, bi-directional I/O with internal pull-up; alternate functions TOSC1 and PCINT22."
      },
      {
        "number": "26",
        "name": "PC7",
        "type": "bidirectional",
        "description": "Port C bit 7, bi-directional I/O with internal pull-up; alternate functions TOSC2 and PCINT23."
      },
      {
        "number": "27",
        "name": "AVCC",
        "type": "power_in",
        "description": "Supply voltage pin for Port A and the ADC; it must be connected to VCC even if the ADC is not used, 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, bi-directional I/O with internal pull-up and ADC7 analog input; also PCINT7."
      },
      {
        "number": "31",
        "name": "PA6",
        "type": "bidirectional",
        "description": "Port A bit 6, bi-directional I/O with internal pull-up and ADC6 analog input; also PCINT6."
      },
      {
        "number": "32",
        "name": "PA5",
        "type": "bidirectional",
        "description": "Port A bit 5, bi-directional I/O with internal pull-up and ADC5 analog input; also PCINT5."
      },
      {
        "number": "33",
        "name": "PA4",
        "type": "bidirectional",
        "description": "Port A bit 4, bi-directional I/O with internal pull-up and ADC4 analog input; also PCINT4."
      },
      {
        "number": "34",
        "name": "PA3",
        "type": "bidirectional",
        "description": "Port A bit 3, bi-directional I/O with internal pull-up and ADC3 analog input; also PCINT3."
      },
      {
        "number": "35",
        "name": "PA2",
        "type": "bidirectional",
        "description": "Port A bit 2, bi-directional I/O with internal pull-up and ADC2 analog input; also PCINT2."
      },
      {
        "number": "36",
        "name": "PA1",
        "type": "bidirectional",
        "description": "Port A bit 1, bi-directional I/O with internal pull-up and ADC1 analog input; also PCINT1."
      },
      {
        "number": "37",
        "name": "PA0",
        "type": "bidirectional",
        "description": "Port A bit 0, bi-directional I/O with internal pull-up and ADC0 analog input; also 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, bi-directional I/O with internal pull-up; alternate functions T0 (Timer/Counter0 external input), XCK0 (USART0 external clock) and PCINT8."
      },
      {
        "number": "41",
        "name": "PB1",
        "type": "bidirectional",
        "description": "Port B bit 1, bi-directional I/O with internal pull-up; alternate functions T1 (Timer/Counter1 external input), CLKO (divided system clock output) and PCINT9."
      },
      {
        "number": "42",
        "name": "PB2",
        "type": "bidirectional",
        "description": "Port B bit 2, bi-directional I/O with internal pull-up; alternate functions AIN0 (analog comparator positive input), INT2 and PCINT10."
      },
      {
        "number": "43",
        "name": "PB3",
        "type": "bidirectional",
        "description": "Port B bit 3, bi-directional I/O with internal pull-up; alternate functions AIN1 (analog comparator negative input), OC0A and PCINT11."
      },
      {
        "number": "44",
        "name": "PB4",
        "type": "bidirectional",
        "description": "Port B bit 4, bi-directional I/O with internal pull-up; alternate functions SS (SPI slave select input), OC0B and 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 pinout drawing on page 11. The 44A (TQFP) package was matched to",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 74,
        "cost_usd": 0.638,
        "at": "2026-11-05T17:05:12"
      },
      "datasheet": {
        "url": "https://ww1.microchip.com/downloads/en/DeviceDoc/ATmega164P-324P-644P-Data-Sheet-40002071A.pdf",
        "pages": 496,
        "sha256": "5edda0efd505127f",
        "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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  },
  "title": "ATMEGA164P-20AUR",
  "brief": "Microchip Tech Pre-ordered MCUs, TQFP-44(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "metadata": {
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      "Manufacturer": "Microchip Tech",
      "Package": "TQFP-44(10x10)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "44"
    },
    "characteristics": {
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          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
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          "source_page": 322,
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        {
          "name": "Output High Voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.3,
          "typ": null,
          "max": null,
          "conditions": "IOH = -10 mA, VCC = 3V",
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          "name": "Input Leakage Current I/O Pin (pin low)",
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          "kind": "electrical",
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          "name": "Reset Pull-up Resistor",
          "symbol": "RRST",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 30,
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        {
          "name": "Analog Comparator Input Offset Voltage",
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          "kind": "electrical",
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          "conditions": "VCC = 5V, Vin = VCC/2",
          "source_page": 323,
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        {
          "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": 323,
          "source": "datasheet"
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        {
          "name": "Analog Comparator Propagation Delay",
          "symbol": "tACID",
          "kind": "electrical",
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          "max": 750,
          "conditions": "VCC = 2.7V",
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          "name": "Analog Comparator Propagation Delay",
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          "conditions": "VCC = 4.0V",
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          "name": "Power Supply Current, Active",
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        {
          "name": "Power Supply Current, Active",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2.1,
          "max": 2.7,
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          "name": "Power Supply Current, Active",
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          "typ": 7.4,
          "max": 9,
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          "name": "Power Supply Current, Idle",
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          "unit": "mA",
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          "max": 0.15,
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        {
          "name": "Power Supply Current, Idle",
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          "unit": "mA",
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          "typ": 0.5,
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        {
          "name": "Power Supply Current, Idle",
          "symbol": "ICC",
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          "unit": "mA",
          "min": null,
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        {
          "name": "Power Supply Current, Power-down mode",
          "symbol": "ICC",
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          "unit": "µA",
          "min": null,
          "typ": 4.3,
          "max": 8,
          "conditions": "WDT enabled, VCC = 3V",
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        {
          "name": "Power Supply Current, Power-down mode",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.2,
          "max": 2,
          "conditions": "WDT disabled, VCC = 3V",
          "source_page": 324,
          "source": "datasheet"
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        {
          "name": "Voltage on RESET with respect to Ground",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
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          "typ": null,
          "max": 13,
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        {
          "name": "Operating Temperature",
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          "unit": "°C",
          "min": -55,
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        {
          "name": "Storage Temperature",
          "symbol": "",
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          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
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        {
          "name": "DC Current per I/O Pin",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
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          "source": "datasheet"
        }
      ]
    }
  },
  "discovery_triggers": [
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  "discovery_pitch": "ATMEGA164P-20AUR (Microchip Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "visibility": "public"
}