ATMEGA32A-AU

{
  "schema_version": 1,
  "type": "component",
  "slug": "atmega32a-au",
  "title": "ATMEGA32A-AU",
  "brief": "Microchip Microcontrollers (MCU/MPU/SOC), TQFP-44(10x10). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "mcu",
    "atmega32a-au"
  ],
  "component": {
    "mpn": "ATMEGA32A-AU",
    "manufacturer": "Microchip",
    "package": "TQFP-44(10x10)",
    "pin_count": 44,
    "category": "MCU",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/33705013ee0e45e189fdf332de73a70f.pdf",
    "parts": {
      "symbol": "atmega32a-au.kicad_sym",
      "footprint": "atmega32a-au.kicad_mod",
      "model_3d": "atmega32a-au-etched.glb",
      "model_3d_plain": "atmega32a-au.glb",
      "model_3d_step": "atmega32a-au-etched.step",
      "model_3d_step_plain": "atmega32a-au.step",
      "lbr": "atmega32a-au.lbr"
    },
    "distributor_links": {
      "digikey": "ATMEGA32A-AU-ND",
      "lcsc": "C5659"
    },
    "pins": [
      {
        "number": "1",
        "name": "PB5/MOSI",
        "type": "bidirectional",
        "description": "Port B bit 5. Alt function: SPI Master Out Slave In. Internal pull-up available."
      },
      {
        "number": "2",
        "name": "PB6/MISO",
        "type": "bidirectional",
        "description": "Port B bit 6. Alt function: SPI Master In Slave Out."
      },
      {
        "number": "3",
        "name": "PB7/SCK",
        "type": "bidirectional",
        "description": "Port B bit 7. Alt function: SPI Bus Serial Clock."
      },
      {
        "number": "4",
        "name": "RESET",
        "type": "input",
        "description": "Active-low external reset input. A low level longer than the minimum pulse width generates a reset even if the clock is not running."
      },
      {
        "number": "5",
        "name": "VCC",
        "type": "power_in",
        "description": "Digital supply voltage (2.7-5.5V)."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "7",
        "name": "XTAL2",
        "type": "output",
        "description": "Output from the inverting oscillator amplifier. Connect to crystal/resonator with XTAL1."
      },
      {
        "number": "8",
        "name": "XTAL1",
        "type": "input",
        "description": "Input to the inverting oscillator amplifier and internal clock operating circuit."
      },
      {
        "number": "9",
        "name": "PD0/RXD",
        "type": "bidirectional",
        "description": "Port D bit 0. Alt function: USART Receive."
      },
      {
        "number": "10",
        "name": "PD1/TXD",
        "type": "bidirectional",
        "description": "Port D bit 1. Alt function: USART Transmit."
      },
      {
        "number": "11",
        "name": "PD2/INT0",
        "type": "bidirectional",
        "description": "Port D bit 2. Alt function: External Interrupt 0."
      },
      {
        "number": "12",
        "name": "PD3/INT1",
        "type": "bidirectional",
        "description": "Port D bit 3. Alt function: External Interrupt 1."
      },
      {
        "number": "13",
        "name": "PD4/OC1B",
        "type": "bidirectional",
        "description": "Port D bit 4. Alt function: Timer/Counter1 Compare Match B output / PWM."
      },
      {
        "number": "14",
        "name": "PD5/OC1A",
        "type": "bidirectional",
        "description": "Port D bit 5. Alt function: Timer/Counter1 Compare Match A output / PWM."
      },
      {
        "number": "15",
        "name": "PD6/ICP1",
        "type": "bidirectional",
        "description": "Port D bit 6. Alt function: Timer/Counter1 Input Capture."
      },
      {
        "number": "16",
        "name": "PD7/OC2",
        "type": "bidirectional",
        "description": "Port D bit 7. Alt function: Timer/Counter2 Compare Match output / PWM."
      },
      {
        "number": "17",
        "name": "VCC",
        "type": "power_in",
        "description": "Digital supply voltage (2.7-5.5V). All VCC pins must be tied together."
      },
      {
        "number": "18",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "19",
        "name": "PC0/SCL",
        "type": "bidirectional",
        "description": "Port C bit 0. Alt function: Two-Wire Serial Interface Clock."
      },
      {
        "number": "20",
        "name": "PC1/SDA",
        "type": "bidirectional",
        "description": "Port C bit 1. Alt function: Two-Wire Serial Interface Data."
      },
      {
        "number": "21",
        "name": "PC2/TCK",
        "type": "bidirectional",
        "description": "Port C bit 2. Alt function: JTAG Test Clock. Pull-up enabled when JTAG is active."
      },
      {
        "number": "22",
        "name": "PC3/TMS",
        "type": "bidirectional",
        "description": "Port C bit 3. Alt function: JTAG Test Mode Select. Pull-up enabled when JTAG is active."
      },
      {
        "number": "23",
        "name": "PC4/TDO",
        "type": "bidirectional",
        "description": "Port C bit 4. Alt function: JTAG Test Data Out. Tri-stated unless TAP is shifting data out."
      },
      {
        "number": "24",
        "name": "PC5/TDI",
        "type": "bidirectional",
        "description": "Port C bit 5. Alt function: JTAG Test Data In. Pull-up enabled when JTAG is active."
      },
      {
        "number": "25",
        "name": "PC6/TOSC1",
        "type": "bidirectional",
        "description": "Port C bit 6. Alt function: Timer Oscillator pin 1 (async 32.768 kHz crystal for RTC)."
      },
      {
        "number": "26",
        "name": "PC7/TOSC2",
        "type": "bidirectional",
        "description": "Port C bit 7. Alt function: Timer Oscillator pin 2 (async 32.768 kHz crystal for RTC)."
      },
      {
        "number": "27",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply voltage for Port A and the ADC. Must be connected to VCC (through an LC filter if ADC is used)."
      },
      {
        "number": "28",
        "name": "GND",
        "type": "power_in",
        "description": "Analog/digital ground."
      },
      {
        "number": "29",
        "name": "AREF",
        "type": "input",
        "description": "Analog reference voltage input for the A/D Converter."
      },
      {
        "number": "30",
        "name": "PA7/ADC7",
        "type": "bidirectional",
        "description": "Port A bit 7. Alt function: ADC channel 7."
      },
      {
        "number": "31",
        "name": "PA6/ADC6",
        "type": "bidirectional",
        "description": "Port A bit 6. Alt function: ADC channel 6."
      },
      {
        "number": "32",
        "name": "PA5/ADC5",
        "type": "bidirectional",
        "description": "Port A bit 5. Alt function: ADC channel 5."
      },
      {
        "number": "33",
        "name": "PA4/ADC4",
        "type": "bidirectional",
        "description": "Port A bit 4. Alt function: ADC channel 4."
      },
      {
        "number": "34",
        "name": "PA3/ADC3",
        "type": "bidirectional",
        "description": "Port A bit 3. Alt function: ADC channel 3."
      },
      {
        "number": "35",
        "name": "PA2/ADC2",
        "type": "bidirectional",
        "description": "Port A bit 2. Alt function: ADC channel 2."
      },
      {
        "number": "36",
        "name": "PA1/ADC1",
        "type": "bidirectional",
        "description": "Port A bit 1. Alt function: ADC channel 1."
      },
      {
        "number": "37",
        "name": "PA0/ADC0",
        "type": "bidirectional",
        "description": "Port A bit 0. Alt function: ADC channel 0."
      },
      {
        "number": "38",
        "name": "VCC",
        "type": "power_in",
        "description": "Digital supply voltage (2.7-5.5V)."
      },
      {
        "number": "39",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "40",
        "name": "PB0/XCK/T0",
        "type": "bidirectional",
        "description": "Port B bit 0. Alt functions: USART External Clock (XCK) / Timer/Counter0 external counter input (T0)."
      },
      {
        "number": "41",
        "name": "PB1/T1",
        "type": "bidirectional",
        "description": "Port B bit 1. Alt function: Timer/Counter1 external counter input (T1)."
      },
      {
        "number": "42",
        "name": "PB2/AIN0/INT2",
        "type": "bidirectional",
        "description": "Port B bit 2. Alt functions: Analog Comparator positive input (AIN0) / External Interrupt 2."
      },
      {
        "number": "43",
        "name": "PB3/AIN1/OC0",
        "type": "bidirectional",
        "description": "Port B bit 3. Alt functions: Analog Comparator negative input (AIN1) / Timer/Counter0 Compare Match output (OC0)."
      },
      {
        "number": "44",
        "name": "PB4/SS",
        "type": "bidirectional",
        "description": "Port B bit 4. Alt function: SPI Slave Select (active low)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/33705013ee0e45e189fdf332de73a70f.pdf",
        "pages": 18,
        "sha256": "683cd3f08e75f0c3",
        "source_tier": "mfr"
      },
      "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -5.6625,
        -4
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "LQFP-44_10x10mm_P0.8mm@sha256:a24003d5101dbf25",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "atmega32a-au.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12,
          12,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "81aae6270b5c742bed79a8a35e9adf7fbed97c42e341e6b25ab20c1783b93b5d",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "atmega32a-au-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12,
          12,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "1ab2b80ee2053025d7ff1364ffcfa024bb10ff9bb0d08d1df957e04cd5e7d859",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip",
      "Package": "TQFP-44(10x10)",
      "Category": "MCU",
      "Pins": "44"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "atmega32a-au"
  ],
  "discovery_pitch": "ATMEGA32A-AU (Microchip) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "atmega32a-au.kicad_sym",
    "atmega32a-au.kicad_mod",
    "atmega32a-au.glb",
    "atmega32a-au.step",
    "atmega32a-au-etched.step",
    "atmega32a-au.lbr",
    "docs/hero.png",
    "docs/atmega32a-au-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:17:53.972Z"
}