ATMEGA48A-AU

{
  "schema_version": 1,
  "type": "component",
  "slug": "atmega48a-au",
  "title": "ATMEGA48A-AU",
  "brief": "Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), TQFP-32(7x7). 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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    "single chip microcomputer-microcontroller",
    "atmega48a-au",
    "factory-2.0.0",
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  "component": {
    "mpn": "ATMEGA48A-AU",
    "manufacturer": "Microchip Tech",
    "package": "TQFP-32(7x7)",
    "pin_count": 32,
    "category": "Single Chip Microcomputer/Microcontroller",
    "subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
    "datasheet": "https://ww1.microchip.com/downloads/en/DeviceDoc/ATmega48A-PA-88A-PA-168A-PA-328-P-DS-DS40002061B.pdf",
    "parts": {
      "symbol": "atmega48a-au.kicad_sym",
      "footprint": "atmega48a-au.kicad_mod",
      "model_3d": "atmega48a-au-hero.glb",
      "model_3d_plain": "atmega48a-au-etched.glb",
      "model_3d_step": "atmega48a-au-etched.step",
      "model_3d_step_plain": "atmega48a-au.step",
      "lbr": "atmega48a-au.lbr"
    },
    "distributor_links": {
      "lcsc": "C618734",
      "digikey": "ATMEGA48A-AU-ND",
      "mouser": "556-ATMEGA48A-AU"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T18:17:12Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ATMEGA48A-AU-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "556-ATMEGA48A-AU",
        "status": "found",
        "lifecycle": "Not Recommended for New Designs"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PD3",
        "type": "bidirectional",
        "description": "Port D bit 3 is a bi-directional I/O pin with internal pull-up, alternate functions INT1 / OC2B / PCINT19."
      },
      {
        "number": "2",
        "name": "PD4",
        "type": "bidirectional",
        "description": "Port D bit 4 is a bi-directional I/O pin with internal pull-up, alternate functions XCK / T0 / PCINT20."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Digital supply voltage."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "6",
        "name": "VCC",
        "type": "power_in",
        "description": "Digital supply voltage."
      },
      {
        "number": "7",
        "name": "PB6",
        "type": "bidirectional",
        "description": "Port B bit 6 is a bi-directional I/O pin with internal pull-up; depending on the clock fuse settings it is the input to the inverting oscillator amplifier (XTAL1/TOSC1) and cannot be used as I/O when used as a clock pin."
      },
      {
        "number": "8",
        "name": "PB7",
        "type": "bidirectional",
        "description": "Port B bit 7 is a bi-directional I/O pin with internal pull-up; depending on the clock fuse settings it is the output of the inverting oscillator amplifier (XTAL2/TOSC2) and cannot be used as I/O when used as a clock pin."
      },
      {
        "number": "9",
        "name": "PD5",
        "type": "bidirectional",
        "description": "Port D bit 5 is a bi-directional I/O pin with internal pull-up, alternate functions T1 / OC0B / PCINT21."
      },
      {
        "number": "10",
        "name": "PD6",
        "type": "bidirectional",
        "description": "Port D bit 6 is a bi-directional I/O pin with internal pull-up, alternate functions AIN0 (analog comparator positive input) / OC0A / PCINT22."
      },
      {
        "number": "11",
        "name": "PD7",
        "type": "bidirectional",
        "description": "Port D bit 7 is a bi-directional I/O pin with internal pull-up, alternate functions AIN1 (analog comparator negative input) / PCINT23."
      },
      {
        "number": "12",
        "name": "PB0",
        "type": "bidirectional",
        "description": "Port B bit 0 is a bi-directional I/O pin with internal pull-up, alternate functions ICP1 / CLKO / PCINT0."
      },
      {
        "number": "13",
        "name": "PB1",
        "type": "bidirectional",
        "description": "Port B bit 1 is a bi-directional I/O pin with internal pull-up, alternate functions OC1A / PCINT1."
      },
      {
        "number": "14",
        "name": "PB2",
        "type": "bidirectional",
        "description": "Port B bit 2 is a bi-directional I/O pin with internal pull-up, alternate functions SS / OC1B / PCINT2."
      },
      {
        "number": "15",
        "name": "PB3",
        "type": "bidirectional",
        "description": "Port B bit 3 is a bi-directional I/O pin with internal pull-up, alternate functions MOSI / OC2A / PCINT3."
      },
      {
        "number": "16",
        "name": "PB4",
        "type": "bidirectional",
        "description": "Port B bit 4 is a bi-directional I/O pin with internal pull-up, alternate functions MISO / PCINT4."
      },
      {
        "number": "17",
        "name": "PB5",
        "type": "bidirectional",
        "description": "Port B bit 5 is a bi-directional I/O pin with internal pull-up, alternate functions SCK / PCINT5."
      },
      {
        "number": "18",
        "name": "AVCC",
        "type": "power_in",
        "description": "Supply voltage pin for the A/D converter, PC3:0 and ADC7:6; it should be connected to VCC even if the ADC is not used, and through a low-pass filter if the ADC is used."
      },
      {
        "number": "19",
        "name": "ADC6",
        "type": "input",
        "description": "Analog input channel 6 of the 10-bit A/D converter (TQFP and VQFN package only), powered from the analog supply."
      },
      {
        "number": "20",
        "name": "AREF",
        "type": "power_in",
        "description": "Analog reference pin for the A/D Converter."
      },
      {
        "number": "21",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "22",
        "name": "ADC7",
        "type": "input",
        "description": "Analog input channel 7 of the 10-bit A/D converter (TQFP and VQFN package only), powered from the analog supply."
      },
      {
        "number": "23",
        "name": "PC0",
        "type": "bidirectional",
        "description": "Port C bit 0 is a bi-directional I/O pin with internal pull-up, alternate functions ADC0 / PCINT8; ADC input channel 0 uses analog power."
      },
      {
        "number": "24",
        "name": "PC1",
        "type": "bidirectional",
        "description": "Port C bit 1 is a bi-directional I/O pin with internal pull-up, alternate functions ADC1 / PCINT9; ADC input channel 1 uses analog power."
      },
      {
        "number": "25",
        "name": "PC2",
        "type": "bidirectional",
        "description": "Port C bit 2 is a bi-directional I/O pin with internal pull-up, alternate functions ADC2 / PCINT10; ADC input channel 2 uses analog power."
      },
      {
        "number": "26",
        "name": "PC3",
        "type": "bidirectional",
        "description": "Port C bit 3 is a bi-directional I/O pin with internal pull-up, alternate functions ADC3 / PCINT11; ADC input channel 3 uses analog power."
      },
      {
        "number": "27",
        "name": "PC4",
        "type": "bidirectional",
        "description": "Port C bit 4 is a bi-directional I/O pin with internal pull-up, alternate functions SDA (2-wire serial data) / ADC4 / PCINT12; ADC input channel 4 uses digital power."
      },
      {
        "number": "28",
        "name": "PC5",
        "type": "bidirectional",
        "description": "Port C bit 5 is a bi-directional I/O pin with internal pull-up, alternate functions SCL (2-wire serial clock) / ADC5 / PCINT13; ADC input channel 5 uses digital power."
      },
      {
        "number": "29",
        "name": "PC6",
        "type": "bidirectional",
        "description": "Port C bit 6 is the RESET input when the RSTDISBL fuse is unprogrammed (a low level longer than the minimum pulse length generates a reset) and a normal I/O pin when RSTDISBL is programmed; alternate function PCINT14."
      },
      {
        "number": "30",
        "name": "PD0",
        "type": "bidirectional",
        "description": "Port D bit 0 is a bi-directional I/O pin with internal pull-up, alternate functions RXD (USART receive data input) / PCINT16."
      },
      {
        "number": "31",
        "name": "PD1",
        "type": "bidirectional",
        "description": "Port D bit 1 is a bi-directional I/O pin with internal pull-up, alternate functions TXD (USART transmit data output) / PCINT17."
      },
      {
        "number": "32",
        "name": "PD2",
        "type": "bidirectional",
        "description": "Port D bit 2 is a bi-directional I/O pin with internal pull-up, alternate functions INT0 (external interrupt 0 input) / PCINT18."
      }
    ],
    "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: The datasheet's 32-lead TQFP is package code 32A (ordering table, page 628). The text extract does n; Pin 29 (PC6/RESET) is typed bidirectional because it is an I/O pin when RSTDISBL is programmed and a; Pins 7 and 8 (PB6/PB7) are typed bidirectional for consistency with the port; when used as crystal/c",
          "12/32 pins cited to the wrong page (name found elsewhere): ['8:PB7@p91', '15:PB3@p92', '16:PB4@p92', '17:PB5@p92']"
        ],
        "pages_sent": 126,
        "cost_usd": 0.3927,
        "at": "2026-10-30T18:17:04"
      },
      "datasheet": {
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        "pages": 653,
        "sha256": "b9b9d83cda56a95d",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 32,
        "described": 32,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "TQFP-32(7x7)",
      "Category": "Single Chip Microcomputer/Microcontroller",
      "Pins": "32"
    },
    "characteristics": {
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          "name": "DC current per I/O pin",
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          "name": "Power supply current, idle mode",
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          "name": "Power supply current, power-down mode",
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        {
          "name": "Supply voltage VCC (industrial)",
          "symbol": "VCC",
          "kind": "recommended_operating",
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          "typ": null,
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          "conditions": "ATmega48A-AU ordering information; Industrial -40°C to 85°C",
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        {
          "name": "Maximum speed grade",
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          "unit": "MHz",
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          "conditions": "ATmega48A-AU speed grade; see Speed Grades",
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    "email": "[email protected]"
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