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Ray Set visibility: public 82b316f 4h ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "atmega8-16au",
  "title": "ATMEGA8-16AU",
  "brief": "Microchip Tech Pre-ordered MCUs, TQFP-32(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "embedded processors & controllers",
    "atmega8-16au",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ATMEGA8-16AU",
    "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/Atmel-2486-8-bit-AVR-microcontroller-ATmega8_L_datasheet.pdf",
    "parts": {
      "symbol": "atmega8-16au.kicad_sym",
      "footprint": "atmega8-16au.kicad_mod",
      "model_3d": "atmega8-16au-hero.glb",
      "model_3d_plain": "atmega8-16au-etched.glb",
      "model_3d_step": "atmega8-16au-etched.step",
      "model_3d_step_plain": "atmega8-16au.step",
      "lbr": "atmega8-16au.lbr"
    },
    "distributor_links": {
      "lcsc": "C1337807",
      "digikey": "ATMEGA8-16AU-ND",
      "mouser": "556-ATMEGA8-16AU"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T00:25:03Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ATMEGA8-16AU-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "556-ATMEGA8-16AU",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PD3 (INT1)",
        "type": "bidirectional",
        "description": "Port D bit 3 is a bidirectional I/O pin with internal pull-up that can also serve as external interrupt source INT1."
      },
      {
        "number": "2",
        "name": "PD4 (XCK/T0)",
        "type": "bidirectional",
        "description": "Port D bit 4 is a bidirectional I/O pin with internal pull-up that also serves as USART external clock XCK and Timer/Counter0 external counter input T0."
      },
      {
        "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 (XTAL1/TOSC1)",
        "type": "input",
        "description": "Port B bit 6 serves as input to the inverting oscillator amplifier and to the internal clock operating circuit, or as TOSC1 for the asynchronous timer."
      },
      {
        "number": "8",
        "name": "PB7 (XTAL2/TOSC2)",
        "type": "output",
        "description": "Port B bit 7 serves as output of the inverting oscillator amplifier (XTAL2), or as TOSC2 when the asynchronous timer is enabled."
      },
      {
        "number": "9",
        "name": "PD5 (T1)",
        "type": "bidirectional",
        "description": "Port D bit 5 is a bidirectional I/O pin with internal pull-up that also serves as Timer/Counter1 external counter input T1."
      },
      {
        "number": "10",
        "name": "PD6 (AIN0)",
        "type": "bidirectional",
        "description": "Port D bit 6 is a bidirectional I/O pin that serves as Analog Comparator positive input AIN0 and should be configured as input with pull-up off when used as comparator input."
      },
      {
        "number": "11",
        "name": "PD7 (AIN1)",
        "type": "bidirectional",
        "description": "Port D bit 7 is a bidirectional I/O pin that serves as Analog Comparator negative input AIN1 and should be configured as input with pull-up off when used as comparator input."
      },
      {
        "number": "12",
        "name": "PB0 (ICP1)",
        "type": "bidirectional",
        "description": "Port B bit 0 is a bidirectional I/O pin that serves as Input Capture pin ICP1 for Timer/Counter1."
      },
      {
        "number": "13",
        "name": "PB1 (OC1A)",
        "type": "bidirectional",
        "description": "Port B bit 1 is a bidirectional I/O pin that serves as Timer/Counter1 Output Compare A output OC1A when configured as output."
      },
      {
        "number": "14",
        "name": "PB2 (SS/OC1B)",
        "type": "bidirectional",
        "description": "Port B bit 2 is a bidirectional I/O pin that serves as SPI Slave Select SS and Timer/Counter1 Output Compare B output OC1B."
      },
      {
        "number": "15",
        "name": "PB3 (MOSI/OC2)",
        "type": "bidirectional",
        "description": "Port B bit 3 is a bidirectional I/O pin that serves as SPI Master Output/Slave Input MOSI and Timer/Counter2 Output Compare output OC2."
      },
      {
        "number": "16",
        "name": "PB4 (MISO)",
        "type": "bidirectional",
        "description": "Port B bit 4 is a bidirectional I/O pin with internal pull-up that serves as SPI Master Input/Slave Output MISO."
      },
      {
        "number": "17",
        "name": "PB5 (SCK)",
        "type": "bidirectional",
        "description": "Port B bit 5 is a bidirectional I/O pin with internal pull-up that serves as SPI clock SCK."
      },
      {
        "number": "18",
        "name": "AVCC",
        "type": "power_in",
        "description": "Supply voltage pin for the A/D Converter, Port C(3..0) and ADC(7..6), which should be externally connected to VCC even if the ADC is not used."
      },
      {
        "number": "19",
        "name": "ADC6",
        "type": "input",
        "description": "Analog input channel 6 of the A/D converter, available in TQFP and QFN/MLF packages only, powered from the analog supply with 10-bit accuracy."
      },
      {
        "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 A/D converter, available in TQFP and QFN/MLF packages only, powered from the analog supply with 10-bit accuracy."
      },
      {
        "number": "23",
        "name": "PC0 (ADC0)",
        "type": "bidirectional",
        "description": "Port C bit 0 is a bidirectional I/O pin that can also serve as ADC input channel 0 using analog power."
      },
      {
        "number": "24",
        "name": "PC1 (ADC1)",
        "type": "bidirectional",
        "description": "Port C bit 1 is a bidirectional I/O pin that can also serve as ADC input channel 1 using analog power."
      },
      {
        "number": "25",
        "name": "PC2 (ADC2)",
        "type": "bidirectional",
        "description": "Port C bit 2 is a bidirectional I/O pin that can also serve as ADC input channel 2 using analog power."
      },
      {
        "number": "26",
        "name": "PC3 (ADC3)",
        "type": "bidirectional",
        "description": "Port C bit 3 is a bidirectional I/O pin that can also serve as ADC input channel 3 using analog power."
      },
      {
        "number": "27",
        "name": "PC4 (ADC4/SDA)",
        "type": "bidirectional",
        "description": "Port C bit 4 is a bidirectional I/O pin that serves as Two-wire Serial Interface data SDA when enabled and as ADC input channel 4 using digital power."
      },
      {
        "number": "28",
        "name": "PC5 (ADC5/SCL)",
        "type": "bidirectional",
        "description": "Port C bit 5 is a bidirectional I/O pin that serves as Two-wire Serial Interface clock SCL when enabled and as ADC input channel 5 using digital power."
      },
      {
        "number": "29",
        "name": "PC6 (RESET)",
        "type": "input",
        "description": "Reset input when the RSTDISBL fuse is unprogrammed; a low level longer than the minimum pulse length generates a reset, otherwise the pin is an I/O pin."
      },
      {
        "number": "30",
        "name": "PD0 (RXD)",
        "type": "bidirectional",
        "description": "Port D bit 0 is a bidirectional I/O pin that serves as USART receive data input RXD when the USART receiver is enabled."
      },
      {
        "number": "31",
        "name": "PD1 (TXD)",
        "type": "bidirectional",
        "description": "Port D bit 1 is a bidirectional I/O pin that serves as USART transmit data output TXD when the USART transmitter is enabled."
      },
      {
        "number": "32",
        "name": "PD2 (INT0)",
        "type": "bidirectional",
        "description": "Port D bit 2 is a bidirectional I/O pin that can serve as external interrupt source INT0."
      }
    ],
    "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": null,
        "consensus": "skipped (clean text read)",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "16/32 pins cited to the wrong page (name found elsewhere): ['9:PD5 (T1)@p63', '10:PD6 (AIN0)@p63', '11:PD7 (AIN1)@p63', '12:PB0 (ICP1)@p59']"
        ],
        "pages_sent": 65,
        "cost_usd": 0.0046,
        "at": "2026-10-27T00:24:40"
      },
      "datasheet": {
        "url": "https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-2486-8-bit-AVR-microcontroller-ATmega8_L_datasheet.pdf",
        "pages": 331,
        "sha256": "279c22ef16189af1",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 32,
        "described": 32,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "atmega8-16au.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9,
          9,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "53431be61c684e9d923915676a90cb08050c23ee3f834d76a77a3b19b41422f1",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "atmega8-16au-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "49ffb9b259205a745db70671a975ddb3f93f9905eca161f276d391bca801fe36",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "TQFP-32(7x7)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "32"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "279c22ef16189af1f95948f51f454bac2d7d7f53fcfddbb9859e8c24e6a00b3f",
      "rows": [
        {
          "name": "Operating voltage (ATmega8)",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 5.5,
          "conditions": "ATmega8 (16 MHz speed grade)",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Speed grade oscillator frequency",
          "symbol": "1/tCLCL",
          "kind": "recommended_operating",
          "unit": "MHz",
          "min": 0,
          "typ": null,
          "max": 16,
          "conditions": "VCC = 4.5V - 5.5V",
          "source_page": 237,
          "source": "datasheet"
        },
        {
          "name": "Maximum operating voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 235,
          "source": "datasheet"
        },
        {
          "name": "Voltage on RESET with respect to Ground",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 13,
          "conditions": "",
          "source_page": 235,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 235,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "",
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          "unit": "C",
          "min": -55,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 235,
          "source": "datasheet"
        },
        {
          "name": "DC current per I/O pin",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 235,
          "source": "datasheet"
        },
        {
          "name": "DC current VCC and GND pins",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "",
          "source_page": 235,
          "source": "datasheet"
        },
        {
          "name": "Power-on Reset threshold voltage (rising)",
          "symbol": "VPOT",
          "kind": "electrical",
          "unit": "V",
          "min": 1.4,
          "typ": null,
          "max": 2.3,
          "conditions": "rising",
          "source_page": 38,
          "source": "datasheet"
        },
        {
          "name": "Power-on Reset threshold voltage (falling)",
          "symbol": "VPOT",
          "kind": "electrical",
          "unit": "V",
          "min": 1.3,
          "typ": null,
          "max": 2.3,
          "conditions": "falling",
          "source_page": 38,
          "source": "datasheet"
        },
        {
          "name": "RESET pin threshold voltage",
          "symbol": "VRST",
          "kind": "electrical",
          "unit": "VCC",
          "min": 0.2,
          "typ": 0.9,
          "max": null,
          "conditions": "",
          "source_page": 38,
          "source": "datasheet"
        },
        {
          "name": "Minimum pulse width on RESET pin",
          "symbol": "tRST",
          "kind": "timing",
          "unit": "µs",
          "min": 1.5,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 38,
          "source": "datasheet"
        },
        {
          "name": "Brown-out reset threshold voltage",
          "symbol": "VBOT",
          "kind": "electrical",
          "unit": "V",
          "min": 3.7,
          "typ": 4,
          "max": 4.5,
          "conditions": "BODLEVEL = 0",
          "source_page": 38,
          "source": "datasheet"
        },
        {
          "name": "Bandgap reference voltage",
          "symbol": "VBG",
          "kind": "electrical",
          "unit": "V",
          "min": 1.15,
          "typ": 1.3,
          "max": 1.4,
          "conditions": "",
          "source_page": 42,
          "source": "datasheet"
        },
        {
          "name": "Internal voltage reference",
          "symbol": "VINT",
          "kind": "electrical",
          "unit": "V",
          "min": 2.3,
          "typ": 2.56,
          "max": 2.9,
          "conditions": "",
          "source_page": 241,
          "source": "datasheet"
        },
        {
          "name": "Input low voltage except XTAL1 and RESET pins",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "VCC",
          "min": -0.5,
          "typ": null,
          "max": 0.2,
          "conditions": "VCC = 2.7V - 5.5V",
          "source_page": 235,
          "source": "datasheet"
        },
        {
          "name": "Input high voltage except XTAL1 and RESET pins",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "VCC",
          "min": 0.6,
          "typ": null,
          "max": null,
          "conditions": "VCC = 2.7V - 5.5V",
          "source_page": 235,
          "source": "datasheet"
        },
        {
          "name": "Input low voltage XTAL1 pin",
          "symbol": "VIL1",
          "kind": "electrical",
          "unit": "VCC",
          "min": -0.5,
          "typ": null,
          "max": 0.1,
          "conditions": "VCC = 2.7V - 5.5V",
          "source_page": 235,
          "source": "datasheet"
        },
        {
          "name": "Input high voltage XTAL1 pin",
          "symbol": "VIH1",
          "kind": "electrical",
          "unit": "VCC",
          "min": 0.8,
          "typ": null,
          "max": null,
          "conditions": "VCC = 2.7V - 5.5V",
          "source_page": 235,
          "source": "datasheet"
        },
        {
          "name": "Input low voltage RESET pin",
          "symbol": "VIL2",
          "kind": "electrical",
          "unit": "VCC",
          "min": -0.5,
          "typ": null,
          "max": 0.2,
          "conditions": "VCC = 2.7V - 5.5V",
          "source_page": 235,
          "source": "datasheet"
        },
        {
          "name": "Input high voltage RESET pin",
          "symbol": "VIH2",
          "kind": "electrical",
          "unit": "VCC",
          "min": 0.9,
          "typ": null,
          "max": null,
          "conditions": "VCC = 2.7V - 5.5V",
          "source_page": 235,
          "source": "datasheet"
        },
        {
          "name": "Input low voltage RESET pin as I/O",
          "symbol": "VIL3",
          "kind": "electrical",
          "unit": "VCC",
          "min": -0.5,
          "typ": null,
          "max": 0.2,
          "conditions": "VCC = 2.7V - 5.5V",
          "source_page": 235,
          "source": "datasheet"
        },
        {
          "name": "Input high voltage RESET pin as I/O",
          "symbol": "VIH3",
          "kind": "electrical",
          "unit": "VCC",
          "min": 0.6,
          "typ": null,
          "max": null,
          "conditions": "VCC = 2.7V - 5.5V",
          "source_page": 235,
          "source": "datasheet"
        },
        {
          "name": "Output low voltage (Ports B,C,D)",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.9,
          "conditions": "IOL = 20mA, VCC = 5V",
          "source_page": 235,
          "source": "datasheet"
        },
        {
          "name": "Output low voltage (Ports B,C,D)",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.6,
          "conditions": "IOL = 10mA, VCC = 3V",
          "source_page": 235,
          "source": "datasheet"
        },
        {
          "name": "Output high voltage (Ports B,C,D)",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.2,
          "typ": null,
          "max": null,
          "conditions": "IOH = -20mA, VCC = 5V",
          "source_page": 235,
          "source": "datasheet"
        },
        {
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