ATMEGA64A-AU

{
  "schema_version": 1,
  "type": "component",
  "slug": "atmega64a-au",
  "title": "ATMEGA64A-AU",
  "brief": "Microchip Microcontrollers (MCU/MPU/SOC), TQFP-64(14x14). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "mcu",
    "atmega64a-au"
  ],
  "component": {
    "mpn": "ATMEGA64A-AU",
    "manufacturer": "Microchip",
    "package": "TQFP-64(14x14)",
    "pin_count": 64,
    "category": "MCU",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/523480394199432888d06866c18e8981.pdf",
    "parts": {
      "symbol": "atmega64a-au.kicad_sym",
      "footprint": "atmega64a-au.kicad_mod",
      "model_3d": "atmega64a-au-etched.glb",
      "model_3d_plain": "atmega64a-au.glb",
      "model_3d_step": "atmega64a-au-etched.step",
      "model_3d_step_plain": "atmega64a-au.step",
      "lbr": "atmega64a-au.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "PEN",
        "type": "input",
        "description": "Programming Enable for SPI Serial Programming mode. Held low during Power-on Reset to enter SPI programming; internally pulled high. No function during normal operation."
      },
      {
        "number": "2",
        "name": "PE0/RXD0/PDI",
        "type": "bidirectional",
        "description": "Port E bit 0. Alt: USART0 RXD receive data input; PDI input for SPI serial programming."
      },
      {
        "number": "3",
        "name": "PE1/TXD0/PDO",
        "type": "bidirectional",
        "description": "Port E bit 1. Alt: USART0 TXD transmit data output; PDO output for SPI serial programming."
      },
      {
        "number": "4",
        "name": "PE2/XCK0/AIN0",
        "type": "bidirectional",
        "description": "Port E bit 2. Alt: USART0 external clock (XCK0); Analog Comparator positive input AIN0."
      },
      {
        "number": "5",
        "name": "PE3/OC3A/AIN1",
        "type": "bidirectional",
        "description": "Port E bit 3. Alt: Timer/Counter3 Output Compare A (OC3A); Analog Comparator negative input AIN1."
      },
      {
        "number": "6",
        "name": "PE4/OC3B/INT4",
        "type": "bidirectional",
        "description": "Port E bit 4. Alt: Timer/Counter3 Output Compare B (OC3B); External Interrupt 4."
      },
      {
        "number": "7",
        "name": "PE5/OC3C/INT5",
        "type": "bidirectional",
        "description": "Port E bit 5. Alt: Timer/Counter3 Output Compare C (OC3C); External Interrupt 5."
      },
      {
        "number": "8",
        "name": "PE6/T3/INT6",
        "type": "bidirectional",
        "description": "Port E bit 6. Alt: Timer/Counter3 external clock input T3; External Interrupt 6."
      },
      {
        "number": "9",
        "name": "PE7/ICP3/INT7",
        "type": "bidirectional",
        "description": "Port E bit 7. Alt: Timer/Counter3 Input Capture (ICP3); External Interrupt 7."
      },
      {
        "number": "10",
        "name": "PB0/SS",
        "type": "bidirectional",
        "description": "Port B bit 0. Alt: SPI Slave Select input (SS)."
      },
      {
        "number": "11",
        "name": "PB1/SCK",
        "type": "bidirectional",
        "description": "Port B bit 1. Alt: SPI Serial Clock (SCK)."
      },
      {
        "number": "12",
        "name": "PB2/MOSI",
        "type": "bidirectional",
        "description": "Port B bit 2. Alt: SPI Master Out / Slave In (MOSI)."
      },
      {
        "number": "13",
        "name": "PB3/MISO",
        "type": "bidirectional",
        "description": "Port B bit 3. Alt: SPI Master In / Slave Out (MISO)."
      },
      {
        "number": "14",
        "name": "PB4/OC0",
        "type": "bidirectional",
        "description": "Port B bit 4. Alt: Timer/Counter0 Output Compare (OC0)."
      },
      {
        "number": "15",
        "name": "PB5/OC1A",
        "type": "bidirectional",
        "description": "Port B bit 5. Alt: Timer/Counter1 Output Compare A (OC1A)."
      },
      {
        "number": "16",
        "name": "PB6/OC1B",
        "type": "bidirectional",
        "description": "Port B bit 6. Alt: Timer/Counter1 Output Compare B (OC1B)."
      },
      {
        "number": "17",
        "name": "PB7/OC2/OC1C",
        "type": "bidirectional",
        "description": "Port B bit 7. Alt: Timer/Counter2 Output Compare (OC2); Timer/Counter1 Output Compare C (OC1C)."
      },
      {
        "number": "18",
        "name": "PG3/TOSC2",
        "type": "bidirectional",
        "description": "Port G bit 3. Alt: RTC oscillator pin TOSC2 (32 kHz crystal)."
      },
      {
        "number": "19",
        "name": "PG4/TOSC1",
        "type": "bidirectional",
        "description": "Port G bit 4. Alt: RTC oscillator pin TOSC1 (32 kHz crystal)."
      },
      {
        "number": "20",
        "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": "21",
        "name": "VCC",
        "type": "power_in",
        "description": "Digital supply voltage, 2.7-5.5 V."
      },
      {
        "number": "22",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "23",
        "name": "XTAL2",
        "type": "output",
        "description": "Output from the inverting oscillator amplifier. Connects to external crystal/resonator."
      },
      {
        "number": "24",
        "name": "XTAL1",
        "type": "input",
        "description": "Input to the inverting oscillator amplifier and internal clock operating circuit."
      },
      {
        "number": "25",
        "name": "PD0/SCL/INT0",
        "type": "bidirectional",
        "description": "Port D bit 0. Alt: TWI (I2C) serial clock (SCL); External Interrupt 0."
      },
      {
        "number": "26",
        "name": "PD1/SDA/INT1",
        "type": "bidirectional",
        "description": "Port D bit 1. Alt: TWI (I2C) serial data (SDA); External Interrupt 1."
      },
      {
        "number": "27",
        "name": "PD2/RXD1/INT2",
        "type": "bidirectional",
        "description": "Port D bit 2. Alt: USART1 RXD receive data input; External Interrupt 2."
      },
      {
        "number": "28",
        "name": "PD3/TXD1/INT3",
        "type": "bidirectional",
        "description": "Port D bit 3. Alt: USART1 TXD transmit data output; External Interrupt 3."
      },
      {
        "number": "29",
        "name": "PD4/ICP1",
        "type": "bidirectional",
        "description": "Port D bit 4. Alt: Timer/Counter1 Input Capture (ICP1)."
      },
      {
        "number": "30",
        "name": "PD5/XCK1",
        "type": "bidirectional",
        "description": "Port D bit 5. Alt: USART1 external clock (XCK1)."
      },
      {
        "number": "31",
        "name": "PD6/T1",
        "type": "bidirectional",
        "description": "Port D bit 6. Alt: Timer/Counter1 external clock input (T1)."
      },
      {
        "number": "32",
        "name": "PD7/T2",
        "type": "bidirectional",
        "description": "Port D bit 7. Alt: Timer/Counter2 external clock input (T2)."
      },
      {
        "number": "33",
        "name": "PG0/WR",
        "type": "bidirectional",
        "description": "Port G bit 0. Alt: External memory interface Write Strobe (WR, active-low)."
      },
      {
        "number": "34",
        "name": "PG1/RD",
        "type": "bidirectional",
        "description": "Port G bit 1. Alt: External memory interface Read Strobe (RD, active-low)."
      },
      {
        "number": "35",
        "name": "PC0/A8",
        "type": "bidirectional",
        "description": "Port C bit 0. Alt: External memory address bus A8."
      },
      {
        "number": "36",
        "name": "PC1/A9",
        "type": "bidirectional",
        "description": "Port C bit 1. Alt: External memory address bus A9."
      },
      {
        "number": "37",
        "name": "PC2/A10",
        "type": "bidirectional",
        "description": "Port C bit 2. Alt: External memory address bus A10."
      },
      {
        "number": "38",
        "name": "PC3/A11",
        "type": "bidirectional",
        "description": "Port C bit 3. Alt: External memory address bus A11."
      },
      {
        "number": "39",
        "name": "PC4/A12",
        "type": "bidirectional",
        "description": "Port C bit 4. Alt: External memory address bus A12."
      },
      {
        "number": "40",
        "name": "PC5/A13",
        "type": "bidirectional",
        "description": "Port C bit 5. Alt: External memory address bus A13."
      },
      {
        "number": "41",
        "name": "PC6/A14",
        "type": "bidirectional",
        "description": "Port C bit 6. Alt: External memory address bus A14."
      },
      {
        "number": "42",
        "name": "PC7/A15",
        "type": "bidirectional",
        "description": "Port C bit 7. Alt: External memory address bus A15."
      },
      {
        "number": "43",
        "name": "PG2/ALE",
        "type": "bidirectional",
        "description": "Port G bit 2. Alt: External memory interface Address Latch Enable (ALE)."
      },
      {
        "number": "44",
        "name": "PA7/AD7",
        "type": "bidirectional",
        "description": "Port A bit 7. Alt: External memory data/address bus AD7 (multiplexed low-address / data)."
      },
      {
        "number": "45",
        "name": "PA6/AD6",
        "type": "bidirectional",
        "description": "Port A bit 6. Alt: External memory data/address bus AD6."
      },
      {
        "number": "46",
        "name": "PA5/AD5",
        "type": "bidirectional",
        "description": "Port A bit 5. Alt: External memory data/address bus AD5."
      },
      {
        "number": "47",
        "name": "PA4/AD4",
        "type": "bidirectional",
        "description": "Port A bit 4. Alt: External memory data/address bus AD4."
      },
      {
        "number": "48",
        "name": "PA3/AD3",
        "type": "bidirectional",
        "description": "Port A bit 3. Alt: External memory data/address bus AD3."
      },
      {
        "number": "49",
        "name": "PA2/AD2",
        "type": "bidirectional",
        "description": "Port A bit 2. Alt: External memory data/address bus AD2."
      },
      {
        "number": "50",
        "name": "PA1/AD1",
        "type": "bidirectional",
        "description": "Port A bit 1. Alt: External memory data/address bus AD1."
      },
      {
        "number": "51",
        "name": "PA0/AD0",
        "type": "bidirectional",
        "description": "Port A bit 0. Alt: External memory data/address bus AD0."
      },
      {
        "number": "52",
        "name": "VCC",
        "type": "power_in",
        "description": "Digital supply voltage, 2.7-5.5 V (second VCC pin)."
      },
      {
        "number": "53",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground (second GND pin)."
      },
      {
        "number": "54",
        "name": "PF7/ADC7/TDI",
        "type": "bidirectional",
        "description": "Port F bit 7 / ADC channel 7 analog input / JTAG Test Data In (TDI). Pull-up activated when JTAG enabled."
      },
      {
        "number": "55",
        "name": "PF6/ADC6/TDO",
        "type": "bidirectional",
        "description": "Port F bit 6 / ADC channel 6 analog input / JTAG Test Data Out (TDO). TDO is tri-stated unless TAP is shifting out data."
      },
      {
        "number": "56",
        "name": "PF5/ADC5/TMS",
        "type": "bidirectional",
        "description": "Port F bit 5 / ADC channel 5 analog input / JTAG Test Mode Select (TMS). Pull-up activated when JTAG enabled."
      },
      {
        "number": "57",
        "name": "PF4/ADC4/TCK",
        "type": "bidirectional",
        "description": "Port F bit 4 / ADC channel 4 analog input / JTAG Test Clock (TCK). Pull-up activated when JTAG enabled."
      },
      {
        "number": "58",
        "name": "PF3/ADC3",
        "type": "bidirectional",
        "description": "Port F bit 3 / ADC channel 3 analog input. Digital I/O when ADC not used."
      },
      {
        "number": "59",
        "name": "PF2/ADC2",
        "type": "bidirectional",
        "description": "Port F bit 2 / ADC channel 2 analog input. Digital I/O when ADC not used."
      },
      {
        "number": "60",
        "name": "PF1/ADC1",
        "type": "bidirectional",
        "description": "Port F bit 1 / ADC channel 1 analog input. Digital I/O when ADC not used."
      },
      {
        "number": "61",
        "name": "PF0/ADC0",
        "type": "bidirectional",
        "description": "Port F bit 0 / ADC channel 0 analog input. Digital I/O when ADC not used."
      },
      {
        "number": "62",
        "name": "AREF",
        "type": "passive",
        "description": "Analog reference input for the A/D Converter. Bypass to AGND with a capacitor when internal reference is used."
      },
      {
        "number": "63",
        "name": "GND",
        "type": "power_in",
        "description": "Analog ground (third GND pin, adjacent to AVCC/AREF)."
      },
      {
        "number": "64",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply for Port F and the A/D Converter. Externally connect to VCC (through a low-pass filter when the ADC is used), even if ADC is unused."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/523480394199432888d06866c18e8981.pdf",
        "pages": 13,
        "sha256": "33c21a82d91798a5",
        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 64,
        "described": 64,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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        "sha256": "ba925bf5c4254d55a029c50945e4157a8371aaac29d2dc73cee8d71f59249e8c",
        "checked": "2026-10-07",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip",
      "Package": "TQFP-64(14x14)",
      "Category": "MCU",
      "Pins": "64"
    }
  },
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  "discovery_triggers": [
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  "discovery_pitch": "ATMEGA64A-AU (Microchip) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
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  "updated_at": "2026-09-24T17:18:10.358Z"
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