attiny88-au

{
  "slug": "attiny88-au",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Microcontrollers (MCU/MPU/SOC), TQFP-32(7x7). Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "mcu",
    "attiny88-au"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "attiny88-au.kicad_sym",
    "attiny88-au.kicad_mod",
    "attiny88-au.glb",
    "attiny88-au.step",
    "attiny88-au.lbr",
    "docs/hero.png",
    "docs/attiny88-au-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "attiny88-au-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "component": {
    "mpn": "ATTINY88-AU",
    "manufacturer": "Microchip",
    "package": "TQFP-32(7x7)",
    "pin_count": 32,
    "category": "Microcontrollers (MCU/MPU/SOC)",
    "parts": {
      "symbol": "attiny88-au.kicad_sym",
      "footprint": "attiny88-au.kicad_mod",
      "model_3d": "attiny88-au-etched.glb",
      "model_3d_plain": "attiny88-au.glb",
      "model_3d_step": "attiny88-au-etched.step",
      "model_3d_step_plain": "attiny88-au.step",
      "lbr": "attiny88-au.lbr"
    },
    "pins": [
      {
        "number": "1",
        "name": "PD3",
        "type": "bidirectional",
        "description": "Port D bit 3, general-purpose I/O with internal pull-up. Alt: PCINT19 (pin-change interrupt), INT1 (external interrupt 1)."
      },
      {
        "number": "2",
        "name": "PD4",
        "type": "bidirectional",
        "description": "Port D bit 4, general-purpose I/O with internal pull-up. Alt: PCINT20, T0 (Timer/Counter0 external clock input)."
      },
      {
        "number": "3",
        "name": "PA2",
        "type": "bidirectional",
        "description": "Port A bit 2, general-purpose I/O with internal pull-up (32-lead packages only). Alt: PCINT26."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Digital supply voltage, 1.8-5.5 V. Bypass with local decoupling capacitor to GND."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground return."
      },
      {
        "number": "6",
        "name": "PA3",
        "type": "bidirectional",
        "description": "Port A bit 3, general-purpose I/O with internal pull-up (32-lead packages only). Alt: PCINT27."
      },
      {
        "number": "7",
        "name": "PB6/CLKI",
        "type": "bidirectional",
        "description": "Port B bit 6, general-purpose I/O with internal pull-up. Alt: PCINT6, CLKI (external clock / crystal oscillator input, depending on CKSEL fuse)."
      },
      {
        "number": "8",
        "name": "PB7",
        "type": "bidirectional",
        "description": "Port B bit 7, general-purpose I/O with internal pull-up. Alt: PCINT7. In external crystal mode this pin pairs with PB6 as XTAL2 (oscillator output)."
      },
      {
        "number": "9",
        "name": "PD5",
        "type": "bidirectional",
        "description": "Port D bit 5, general-purpose I/O with internal pull-up. Alt: PCINT21, T1 (Timer/Counter1 external clock input)."
      },
      {
        "number": "10",
        "name": "PD6",
        "type": "bidirectional",
        "description": "Port D bit 6, general-purpose I/O with internal pull-up. Alt: PCINT22, AIN0 (analog comparator positive input)."
      },
      {
        "number": "11",
        "name": "PD7",
        "type": "bidirectional",
        "description": "Port D bit 7, general-purpose I/O with internal pull-up. Alt: PCINT23, AIN1 (analog comparator negative input)."
      },
      {
        "number": "12",
        "name": "PB0",
        "type": "bidirectional",
        "description": "Port B bit 0, general-purpose I/O with internal pull-up. Alt: PCINT0, CLKO (system clock output when CKOUT fuse programmed), ICP1 (Timer/Counter1 input capture)."
      },
      {
        "number": "13",
        "name": "PB1",
        "type": "bidirectional",
        "description": "Port B bit 1, general-purpose I/O with internal pull-up. Alt: PCINT1, OC1A (Timer/Counter1 compare-match output A / PWM)."
      },
      {
        "number": "14",
        "name": "PB2/SS",
        "type": "bidirectional",
        "description": "Port B bit 2, general-purpose I/O with internal pull-up. Alt: PCINT2, SS (SPI slave-select, active-low), OC1B (Timer/Counter1 compare-match output B / PWM)."
      },
      {
        "number": "15",
        "name": "PB3/MOSI",
        "type": "bidirectional",
        "description": "Port B bit 3, general-purpose I/O with internal pull-up. Alt: PCINT3, MOSI (SPI master-out / slave-in data)."
      },
      {
        "number": "16",
        "name": "PB4/MISO",
        "type": "bidirectional",
        "description": "Port B bit 4, general-purpose I/O with internal pull-up. Alt: PCINT4, MISO (SPI master-in / slave-out data)."
      },
      {
        "number": "17",
        "name": "PB5/SCK",
        "type": "bidirectional",
        "description": "Port B bit 5, general-purpose I/O with internal pull-up. Alt: PCINT5, SCK (SPI clock)."
      },
      {
        "number": "18",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply pin for the ADC and for I/O pins PC7, PC[5:0] and (32-lead only) PA[1:0]. Must be connected to VCC even if the ADC is unused; connect through an LC low-pass filter when ADC accuracy matters."
      },
      {
        "number": "19",
        "name": "PA0",
        "type": "bidirectional",
        "description": "Port A bit 0, general-purpose I/O with internal pull-up (32-lead only), powered from AVCC. Alt: ADC6 (ADC channel 6, 10-bit), PCINT24."
      },
      {
        "number": "20",
        "name": "PC7",
        "type": "bidirectional",
        "description": "Port C bit 7, general-purpose I/O with internal pull-up, powered from AVCC. Alt: PCINT15."
      },
      {
        "number": "21",
        "name": "GND",
        "type": "power_in",
        "description": "Analog/second ground return; tie to system GND plane."
      },
      {
        "number": "22",
        "name": "PA1",
        "type": "bidirectional",
        "description": "Port A bit 1, general-purpose I/O with internal pull-up (32-lead only), powered from AVCC. Alt: ADC7 (ADC channel 7, 10-bit), PCINT25."
      },
      {
        "number": "23",
        "name": "PC0",
        "type": "bidirectional",
        "description": "Port C bit 0, general-purpose I/O with internal pull-up, powered from AVCC. Alt: ADC0 (ADC channel 0), PCINT8."
      },
      {
        "number": "24",
        "name": "PC1",
        "type": "bidirectional",
        "description": "Port C bit 1, general-purpose I/O with internal pull-up, powered from AVCC. Alt: ADC1 (ADC channel 1), PCINT9."
      },
      {
        "number": "25",
        "name": "PC2",
        "type": "bidirectional",
        "description": "Port C bit 2, general-purpose I/O with internal pull-up, powered from AVCC. Alt: ADC2 (ADC channel 2), PCINT10."
      },
      {
        "number": "26",
        "name": "PC3",
        "type": "bidirectional",
        "description": "Port C bit 3, general-purpose I/O with internal pull-up, powered from AVCC. Alt: ADC3 (ADC channel 3), PCINT11."
      },
      {
        "number": "27",
        "name": "PC4/SDA",
        "type": "bidirectional",
        "description": "Port C bit 4, general-purpose I/O with internal pull-up, powered from AVCC. Alt: ADC4 (ADC channel 4), SDA (2-wire/I2C data line), PCINT12."
      },
      {
        "number": "28",
        "name": "PC5/SCL",
        "type": "bidirectional",
        "description": "Port C bit 5, general-purpose I/O with internal pull-up, powered from AVCC. Alt: ADC5 (ADC channel 5), SCL (2-wire/I2C clock line), PCINT13."
      },
      {
        "number": "29",
        "name": "PC6/RESET",
        "type": "input",
        "description": "Reset input (active-low) by default; asserting low for longer than the minimum pulse width triggers a reset even when the clock is stopped. If the RSTDISBL fuse is programmed, this pin becomes a general-purpose I/O (PC6) with electrical characteristics that differ from the rest of Port C."
      },
      {
        "number": "30",
        "name": "PD0",
        "type": "bidirectional",
        "description": "Port D bit 0, general-purpose I/O with internal pull-up. Alt: PCINT16."
      },
      {
        "number": "31",
        "name": "PD1",
        "type": "bidirectional",
        "description": "Port D bit 1, general-purpose I/O with internal pull-up. Alt: PCINT17."
      },
      {
        "number": "32",
        "name": "PD2",
        "type": "bidirectional",
        "description": "Port D bit 2, general-purpose I/O with internal pull-up. Alt: PCINT18, INT0 (external interrupt 0)."
      }
    ],
    "provenance": {
      "rebuilt": "component block rebuilt 2026-10-05 from this page's own README pinout table and .kicad_sym (pins cross-checked), no re-extraction"
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "distributor_links": {
      "lcsc": "C111451",
      "digikey": "ATTINY88-AU-ND",
      "mouser": "556-ATTINY88-AU"
    },
    "distributor_check": {
      "checked_at": "2026-10-05T18:53:28Z",
      "source": "Component Ocean /api/assign-pns + lcsc_map",
      "digikey": {
        "pn": "ATTINY88-AU-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "556-ATTINY88-AU",
        "status": "found"
      }
    },
    "models_3d": [
      {
        "file": "attiny88-au.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.0,
          9.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "53431be61c684e9d923915676a90cb08050c23ee3f834d76a77a3b19b41422f1",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "attiny88-au-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.0,
          9.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "4f63824072c3fa866f64d9af56f9d428d13006a452ce55d2bbd4c85ba0699955",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}