ATMEGA88A-AU

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  "slug": "atmega88a-au",
  "title": "ATMEGA88A-AU",
  "brief": "Microchip Tech Pre-ordered MCUs, TQFP-32(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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  "component": {
    "mpn": "ATMEGA88A-AU",
    "manufacturer": "Microchip Tech",
    "package": "TQFP-32(7x7)",
    "pin_count": 32,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Pre-ordered MCUs",
    "datasheet": "https://ww1.microchip.com/downloads/en/DeviceDoc/ATmega48A-PA-88A-PA-168A-PA-328-P-DS-DS40002061B.pdf",
    "parts": {
      "symbol": "atmega88a-au.kicad_sym",
      "footprint": "atmega88a-au.kicad_mod",
      "model_3d": "atmega88a-au-hero.glb",
      "model_3d_plain": "atmega88a-au-etched.glb",
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      "lbr": "atmega88a-au.lbr"
    },
    "distributor_links": {
      "lcsc": "C1339730",
      "digikey": "ATMEGA88A-AU-ND",
      "mouser": "556-ATMEGA88A-AU"
    },
    "distributor_check": {
      "checked_at": "2026-10-29T03:53:34Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ATMEGA88A-AU-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "556-ATMEGA88A-AU",
        "status": "found",
        "lifecycle": "Not Recommended for New Designs"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PD3",
        "type": "bidirectional",
        "description": "Port D bit 3 is a bidirectional I/O pin with internal pull-up resistors, also serving as INT1 external interrupt 1 input, OC2B Timer/Counter2 output and PCINT19."
      },
      {
        "number": "2",
        "name": "PD4",
        "type": "bidirectional",
        "description": "Port D bit 4 is a bidirectional I/O pin with internal pull-up resistors, also serving as USART external clock XCK, Timer/Counter0 external counter input T0 and 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": "input",
        "description": "Port B bit 6 is used as input to the inverting Oscillator amplifier (XTAL1) or as TOSC1 when the clock fuses select it, and cannot be used as an I/O pin in that mode; it also serves as PCINT6."
      },
      {
        "number": "8",
        "name": "PB7",
        "type": "output",
        "description": "Port B bit 7 is used as output from the inverting Oscillator amplifier (XTAL2) or as TOSC2 when the clock fuses select it, and cannot be used as an I/O pin in that mode; it also serves as PCINT7."
      },
      {
        "number": "9",
        "name": "PD5",
        "type": "bidirectional",
        "description": "Port D bit 5 is a bidirectional I/O pin with internal pull-up resistors, also serving as Timer/Counter1 external counter input T1, OC0B output and PCINT21."
      },
      {
        "number": "10",
        "name": "PD6",
        "type": "bidirectional",
        "description": "Port D bit 6 is a bidirectional I/O pin with internal pull-up resistors, also serving as analog comparator positive input AIN0, OC0A output and PCINT22."
      },
      {
        "number": "11",
        "name": "PD7",
        "type": "bidirectional",
        "description": "Port D bit 7 is a bidirectional I/O pin with internal pull-up resistors, also serving as analog comparator negative input AIN1 and PCINT23."
      },
      {
        "number": "12",
        "name": "PB0",
        "type": "bidirectional",
        "description": "Port B bit 0 is a bidirectional I/O pin with internal pull-up resistors, also serving as Timer/Counter1 input capture ICP1, divided system clock output CLKO and PCINT0."
      },
      {
        "number": "13",
        "name": "PB1",
        "type": "bidirectional",
        "description": "Port B bit 1 is a bidirectional I/O pin with internal pull-up resistors, also serving as Timer/Counter1 output compare match A output OC1A and PCINT1."
      },
      {
        "number": "14",
        "name": "PB2",
        "type": "bidirectional",
        "description": "Port B bit 2 is a bidirectional I/O pin with internal pull-up resistors, also serving as SPI slave select SS, Timer/Counter1 output compare match B output OC1B and PCINT2."
      },
      {
        "number": "15",
        "name": "PB3",
        "type": "bidirectional",
        "description": "Port B bit 3 is a bidirectional I/O pin with internal pull-up resistors, also serving as SPI MOSI, Timer/Counter2 output compare match A output OC2A and PCINT3."
      },
      {
        "number": "16",
        "name": "PB4",
        "type": "bidirectional",
        "description": "Port B bit 4 is a bidirectional I/O pin with internal pull-up resistors, also serving as SPI MISO and PCINT4."
      },
      {
        "number": "17",
        "name": "PB5",
        "type": "bidirectional",
        "description": "Port B bit 5 is a bidirectional I/O pin with internal pull-up resistors, also serving as SPI clock SCK and 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 externally 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, powered from the analog supply (TQFP and VQFN package only)."
      },
      {
        "number": "20",
        "name": "AREF",
        "type": "input",
        "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, powered from the analog supply (TQFP and VQFN package only)."
      },
      {
        "number": "23",
        "name": "PC0",
        "type": "bidirectional",
        "description": "Port C bit 0 is a bidirectional I/O pin with internal pull-up resistors, also serving as ADC input channel 0 (analog power) and PCINT8."
      },
      {
        "number": "24",
        "name": "PC1",
        "type": "bidirectional",
        "description": "Port C bit 1 is a bidirectional I/O pin with internal pull-up resistors, also serving as ADC input channel 1 (analog power) and PCINT9."
      },
      {
        "number": "25",
        "name": "PC2",
        "type": "bidirectional",
        "description": "Port C bit 2 is a bidirectional I/O pin with internal pull-up resistors, also serving as ADC input channel 2 (analog power) and PCINT10."
      },
      {
        "number": "26",
        "name": "PC3",
        "type": "bidirectional",
        "description": "Port C bit 3 is a bidirectional I/O pin with internal pull-up resistors, also serving as ADC input channel 3 (analog power) and PCINT11."
      },
      {
        "number": "27",
        "name": "PC4",
        "type": "bidirectional",
        "description": "Port C bit 4 is a bidirectional I/O pin with internal pull-up resistors, also serving as 2-wire serial data SDA when TWEN is set, ADC input channel 4 (digital power) and PCINT12."
      },
      {
        "number": "28",
        "name": "PC5",
        "type": "bidirectional",
        "description": "Port C bit 5 is a bidirectional I/O pin with internal pull-up resistors, also serving as 2-wire serial clock SCL when TWEN is set, ADC input channel 5 (digital power) and PCINT13."
      },
      {
        "number": "29",
        "name": "PC6",
        "type": "input",
        "description": "Reset input when the RSTDISBL fuse is unprogrammed: a low level longer than the minimum pulse length in Table 29-11 generates a Reset, and shorter pulses are not ensured to do so; if RSTDISBL is programmed it is an I/O pin with electrical characteristics differing from other Port C pins (also PCINT14)."
      },
      {
        "number": "30",
        "name": "PD0",
        "type": "bidirectional",
        "description": "Port D bit 0 is a bidirectional I/O pin with internal pull-up resistors, serving as USART receive data input RXD when the USART receiver is enabled, and PCINT16."
      },
      {
        "number": "31",
        "name": "PD1",
        "type": "bidirectional",
        "description": "Port D bit 1 is a bidirectional I/O pin with internal pull-up resistors, serving as USART transmit data output TXD when the USART transmitter is enabled, and PCINT17."
      },
      {
        "number": "32",
        "name": "PD2",
        "type": "bidirectional",
        "description": "Port D bit 2 is a bidirectional I/O pin with internal pull-up resistors, also serving as external interrupt 0 input INT0 and PCINT18."
      }
    ],
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        "at": "2026-10-29T03:53:23"
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      "Package": "TQFP-32(7x7)",
      "Category": "Embedded Processors & Controllers",
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