ATTINY88-MUR

{
  "slug": "attiny88-mur",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech ATMEL & AVR, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "attiny88-mur",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "attiny88-mur.kicad_sym",
    "attiny88-mur.kicad_mod",
    "attiny88-mur.glb",
    "attiny88-mur.step",
    "attiny88-mur.lbr",
    "docs/hero.png",
    "docs/attiny88-mur-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "attiny88-mur-hero.glb",
    "attiny88-mur-hero.overlay.json",
    "attiny88-mur-etched.glb"
  ],
  "component": {
    "mpn": "ATTINY88-MUR",
    "manufacturer": "Microchip Tech",
    "package": "QFN-32-EP(5x5)",
    "pin_count": 33,
    "category": "Embedded Processors & Controllers",
    "subcategory": "ATMEL & AVR",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/2de19331d45b463d91079422b8f91310.pdf",
    "parts": {
      "symbol": "attiny88-mur.kicad_sym",
      "footprint": "attiny88-mur.kicad_mod",
      "model_3d": "attiny88-mur-hero.glb",
      "model_3d_plain": "attiny88-mur-etched.glb",
      "model_3d_step": "attiny88-mur-etched.step",
      "model_3d_step_plain": "attiny88-mur.step",
      "lbr": "attiny88-mur.lbr"
    },
    "distributor_links": {
      "lcsc": "C219105",
      "digikey": "ATTINY88-MURTR-ND",
      "mouser": "556-ATTINY88-MUR"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T15:50:24Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ATTINY88-MURTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "556-ATTINY88-MUR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PD3",
        "type": "bidirectional",
        "description": "Port D bit 3 with INT1 external interrupt source and PCINT19; PD[3:0] output buffers have high sink capability."
      },
      {
        "number": "2",
        "name": "PD4",
        "type": "bidirectional",
        "description": "Port D bit 4 with T0 Timer/Counter0 external counter input and PCINT20; PD[7:4] output buffers have symmetrical sink and source drive."
      },
      {
        "number": "3",
        "name": "PA2",
        "type": "bidirectional",
        "description": "Port A bit 2 with PCINT26 pin change interrupt source; Port A is available only in 32-lead packages and is tri-stated when reset is active."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Digital supply voltage."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "6",
        "name": "PA3",
        "type": "bidirectional",
        "description": "Port A bit 3 with PCINT27 pin change interrupt source; Port A is a 4-bit bidirectional I/O port with selectable internal pull-ups."
      },
      {
        "number": "7",
        "name": "PB6",
        "type": "bidirectional",
        "description": "Port B bit 6 that serves as CLKI external clock input (when used as clock pin it cannot be used as I/O) and PCINT6 pin change interrupt source."
      },
      {
        "number": "8",
        "name": "PB7",
        "type": "bidirectional",
        "description": "Port B bit 7 with PCINT7 pin change interrupt source; Port B is an 8-bit bidirectional I/O port with selectable internal pull-ups."
      },
      {
        "number": "9",
        "name": "PD5",
        "type": "bidirectional",
        "description": "Port D bit 5 with T1 Timer/Counter1 external counter input and PCINT21 pin change interrupt source."
      },
      {
        "number": "10",
        "name": "PD6",
        "type": "bidirectional",
        "description": "Port D bit 6 with AIN0 analog comparator positive input (configure as input with pull-up off) and PCINT22 pin change interrupt source."
      },
      {
        "number": "11",
        "name": "PD7",
        "type": "bidirectional",
        "description": "Port D bit 7 with AIN1 analog comparator negative input (configure as input with pull-up off) and PCINT23 pin change interrupt source."
      },
      {
        "number": "12",
        "name": "PB0",
        "type": "bidirectional",
        "description": "Port B bit 0 with ICP1 Timer/Counter1 input capture pin, CLKO divided system clock output when the CKOUT fuse is programmed, and PCINT0 pin change interrupt source."
      },
      {
        "number": "13",
        "name": "PB1",
        "type": "bidirectional",
        "description": "Port B bit 1 with OC1A Timer/Counter1 compare match A output, which requires the pin to be configured as an output, and PCINT1 pin change interrupt source."
      },
      {
        "number": "14",
        "name": "PB2",
        "type": "bidirectional",
        "description": "Port B bit 2 with SS SPI slave select input, OC1B Timer/Counter1 compare match B output (requires output configuration), and PCINT2 pin change interrupt source."
      },
      {
        "number": "15",
        "name": "PB3",
        "type": "bidirectional",
        "description": "Port B bit 3 with MOSI SPI master output / slave input and PCINT3 pin change interrupt source."
      },
      {
        "number": "16",
        "name": "PB4",
        "type": "bidirectional",
        "description": "Port B bit 4 with MISO SPI master input / slave output and PCINT4 pin change interrupt source."
      },
      {
        "number": "17",
        "name": "PB5",
        "type": "bidirectional",
        "description": "Port B bit 5 with SCK SPI master clock output / slave clock input and PCINT5 pin change interrupt source; this pin takes its supply from VCC."
      },
      {
        "number": "18",
        "name": "AVCC",
        "type": "power_in",
        "description": "Supply voltage pin for the A/D converter and PC7, PC[5:0] and PA[1:0]; 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": "PA0",
        "type": "bidirectional",
        "description": "Port A bit 0 with ADC6 ADC input channel 6 and PCINT24 pin change interrupt source; in 32-lead packages PA0 takes its supply from AVCC."
      },
      {
        "number": "20",
        "name": "PC7",
        "type": "bidirectional",
        "description": "Port C bit 7 with PCINT15 pin change interrupt source; this pin takes its supply from AVCC."
      },
      {
        "number": "21",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "22",
        "name": "PA1",
        "type": "bidirectional",
        "description": "Port A bit 1 with ADC7 ADC input channel 7 and PCINT25 pin change interrupt source; in 32-lead packages PA1 takes its supply from AVCC."
      },
      {
        "number": "23",
        "name": "PC0",
        "type": "bidirectional",
        "description": "Port C bit 0 with ADC0 ADC input channel 0 (uses analog power) and PCINT8 pin change interrupt source."
      },
      {
        "number": "24",
        "name": "PC1",
        "type": "bidirectional",
        "description": "Port C bit 1 with ADC1 ADC input channel 1 (uses analog power) and PCINT9 pin change interrupt source."
      },
      {
        "number": "25",
        "name": "PC2",
        "type": "bidirectional",
        "description": "Port C bit 2 with ADC2 ADC input channel 2 (uses analog power) and PCINT10 pin change interrupt source."
      },
      {
        "number": "26",
        "name": "PC3",
        "type": "bidirectional",
        "description": "Port C bit 3 with ADC3 ADC input channel 3 (uses analog power) and PCINT11 pin change interrupt source."
      },
      {
        "number": "27",
        "name": "PC4",
        "type": "bidirectional",
        "description": "Port C bit 4 with SDA 2-wire serial data I/O (open-drain with spike filter when TWEN is set), ADC4 input channel 4 (uses digital power) and PCINT12 pin change interrupt source."
      },
      {
        "number": "28",
        "name": "PC5",
        "type": "bidirectional",
        "description": "Port C bit 5 with SCL 2-wire serial clock I/O (open-drain with spike filter when TWEN is set), ADC5 input channel 5 (uses digital power) and PCINT13 pin change interrupt source."
      },
      {
        "number": "29",
        "name": "PC6",
        "type": "bidirectional",
        "description": "PC6/RESET: a low level longer than the minimum pulse width generates a reset when the RSTDISBL fuse is unprogrammed, otherwise it is an I/O pin; it also provides PCINT14 and its electrical characteristics differ from the other Port C pins."
      },
      {
        "number": "30",
        "name": "PD0",
        "type": "bidirectional",
        "description": "Port D bit 0 with PCINT16 pin change interrupt source; PD[3:0] output buffers have high sink capability."
      },
      {
        "number": "31",
        "name": "PD1",
        "type": "bidirectional",
        "description": "Port D bit 1 with PCINT17 pin change interrupt source; PD[3:0] output buffers have high sink capability."
      },
      {
        "number": "32",
        "name": "PD2",
        "type": "bidirectional",
        "description": "Port D bit 2 with INT0 external interrupt source 0 and PCINT18 pin change interrupt source; PD[3:0] output buffers have high sink capability."
      },
      {
        "number": "33",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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 32 QFN top-view text in the extracted datasheet is column-scrambled, so the pin-to-number mappin; The exposed bottom pad (thermal/ground pad) has no pin number in the datasheet text; the datasheet o; PC6 is listed as bidirectional because it is a port pin when RSTDISBL is programmed; when used as RE",
          "exposed pad 33 added from the footprint",
          "15/33 pins cited to the wrong page (name found elsewhere): ['8:PB7@p69', '16:PB4@p69', '17:PB5@p69', '19:PA0@p68']"
        ],
        "pages_sent": 70,
        "cost_usd": 0.2444,
        "at": "2026-10-30T15:49:34"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/2de19331d45b463d91079422b8f91310.pdf",
        "pages": 302,
        "sha256": "c4c6c01b2bda5d04",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 33,
        "described": 33,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "attiny88-mur.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          5.0,
          0.875
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "attiny88-mur-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          5.0,
          0.875
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "0d58cbcce7e3c84d97fd07b44b02f0069cdfe49379b34f2b8687e5d6d3354c8b",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "32M1-A",
      "source_page": 289,
      "D": {
        "nom_mm": 5.0,
        "range_mm": [
          4.9,
          5.1
        ]
      },
      "E1": {
        "nom_mm": 5.0,
        "range_mm": [
          4.9,
          5.1
        ]
      },
      "e": {
        "nom_mm": 0.5,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 0.9,
        "range_mm": [
          0.8,
          1.0
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "attiny88-mur.step",
        "verdict": "PASS",
        "reasons": [
          "height within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}