ATMEGA1608-MU

{
  "schema_version": 1,
  "type": "component",
  "slug": "atmega1608-mu",
  "title": "ATMEGA1608-MU",
  "brief": "Microchip Tech Microcontrollers (MCU/MPU/SOC), VQFN-32-EP(5x5). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "embedded processors & controllers",
    "atmega1608-mu"
  ],
  "component": {
    "mpn": "ATMEGA1608-MU",
    "manufacturer": "Microchip Tech",
    "package": "VQFN-32-EP(5x5)",
    "pin_count": 33,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588943153210933248",
    "parts": {
      "symbol": "atmega1608-mu.kicad_sym",
      "footprint": "atmega1608-mu.kicad_mod",
      "model_3d": "atmega1608-mu-etched.glb",
      "model_3d_plain": "atmega1608-mu.glb",
      "model_3d_step": "atmega1608-mu-etched.step",
      "model_3d_step_plain": "atmega1608-mu.step",
      "lbr": "atmega1608-mu.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "PA3",
        "type": "bidirectional",
        "description": "PORT A bit 3. GPIO on VDD domain. Alt functions: TWI0 (SCL master-slave alt), USART0 XDIR, TCA0 WO3, TCB1 WO, CCL LUT0-OUT."
      },
      {
        "number": "2",
        "name": "PA4",
        "type": "bidirectional",
        "description": "PORT A bit 4. GPIO on VDD domain. Alt functions: USART0 TxD (alt), SPI0 MOSI, TCA0 WO4."
      },
      {
        "number": "3",
        "name": "PA5",
        "type": "bidirectional",
        "description": "PORT A bit 5. GPIO on VDD domain. Alt functions: USART0 RxD (alt), SPI0 MISO, TCA0 WO5."
      },
      {
        "number": "4",
        "name": "PA6",
        "type": "bidirectional",
        "description": "PORT A bit 6. GPIO on VDD domain. Alt functions: USART0 XCK (alt), SPI0 SCK, AC0 OUT (alt)."
      },
      {
        "number": "5",
        "name": "PA7",
        "type": "bidirectional",
        "description": "PORT A bit 7. GPIO on VDD domain. Alt functions: CLKOUT, AC0 OUT, USART0 XDIR (alt), SPI0 SS, EVOUTA (alt)."
      },
      {
        "number": "6",
        "name": "PC0",
        "type": "bidirectional",
        "description": "PORT C bit 0. GPIO on VDD domain. Alt functions: USART1 TxD, SPI0 MOSI (alt), TCA0 WO0 (alt), TCB2 WO, CCL LUT1-IN0."
      },
      {
        "number": "7",
        "name": "PC1",
        "type": "bidirectional",
        "description": "PORT C bit 1. GPIO on VDD domain. Alt functions: USART1 RxD, SPI0 MISO (alt), TCA0 WO1 (alt), CCL LUT1-IN1."
      },
      {
        "number": "8",
        "name": "PC2",
        "type": "bidirectional",
        "description": "PORT C bit 2. GPIO on VDD domain. Alt functions: TWI0 (SCK/SDA master-slave alt), USART1 XCK, SPI0 SCK (alt), TCA0 WO2 (alt), EVOUTC, CCL LUT1-IN2."
      },
      {
        "number": "9",
        "name": "PC3",
        "type": "bidirectional",
        "description": "PORT C bit 3. GPIO on VDD domain. Alt functions: TWI0 (SCL master-slave alt), USART1 XDIR, SPI0 SS (alt), TCA0 WO3 (alt), CCL LUT1-OUT."
      },
      {
        "number": "10",
        "name": "PD0",
        "type": "bidirectional",
        "description": "PORT D bit 0. GPIO on AVDD (analog) domain. Alt functions: ADC0 AIN0, TCA0 WO0 (alt), CCL LUT2-IN0."
      },
      {
        "number": "11",
        "name": "PD1",
        "type": "bidirectional",
        "description": "PORT D bit 1. GPIO on AVDD (analog) domain. Alt functions: ADC0 AIN1, AC0 P3, TCA0 WO1 (alt), CCL LUT2-IN1."
      },
      {
        "number": "12",
        "name": "PD2",
        "type": "bidirectional",
        "description": "PORT D bit 2. GPIO on AVDD (analog) domain. Alt functions: ADC0 AIN2, AC0 P0, TCA0 WO2 (alt), EVOUTD, CCL LUT2-IN2."
      },
      {
        "number": "13",
        "name": "PD3",
        "type": "bidirectional",
        "description": "PORT D bit 3. GPIO on AVDD (analog) domain. Alt functions: ADC0 AIN3, AC0 N0, TCA0 WO3 (alt), CCL LUT2-OUT."
      },
      {
        "number": "14",
        "name": "PD4",
        "type": "bidirectional",
        "description": "PORT D bit 4. GPIO on AVDD (analog) domain. Alt functions: ADC0 AIN4, AC0 P1, TCA0 WO4 (alt)."
      },
      {
        "number": "15",
        "name": "PD5",
        "type": "bidirectional",
        "description": "PORT D bit 5. GPIO on AVDD (analog) domain. Alt functions: ADC0 AIN5, AC0 N1, TCA0 WO5 (alt)."
      },
      {
        "number": "16",
        "name": "PD6",
        "type": "bidirectional",
        "description": "PORT D bit 6. GPIO on AVDD (analog) domain. Alt functions: ADC0 AIN6, TCB2 WO (alt)."
      },
      {
        "number": "17",
        "name": "PD7",
        "type": "bidirectional",
        "description": "PORT D bit 7. GPIO on AVDD (analog) domain. Alt functions: VREFA external voltage reference input, ADC0 AIN7, AC0 N2, EVOUTD (alt)."
      },
      {
        "number": "18",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog supply voltage (1.8-5.5 V). Must be tied to the same rail as VDD; supplies the ADC, AC and PORT-D/F analog domain. Decouple with a 100 nF ceramic close to the pin."
      },
      {
        "number": "19",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the analog and digital supply. All GND pins must be connected to the board's ground plane."
      },
      {
        "number": "20",
        "name": "PF0/TOSC1",
        "type": "bidirectional",
        "description": "PORT F bit 0 / TOSC1 32.768 kHz crystal input for the RTC. Alt functions: USART2 TxD, TCA0 WO0 (alt), CCL LUT3-IN0."
      },
      {
        "number": "21",
        "name": "PF1/TOSC2",
        "type": "bidirectional",
        "description": "PORT F bit 1 / TOSC2 32.768 kHz crystal output for the RTC. Alt functions: USART2 RxD, TCA0 WO1 (alt), CCL LUT3-IN1."
      },
      {
        "number": "22",
        "name": "PF2",
        "type": "bidirectional",
        "description": "PORT F bit 2. Alt functions: TWI0 SDA (slave alt), ADC0 AIN12, USART2 XCK, TCA0 WO2 (alt), EVOUTF, CCL LUT3-IN2."
      },
      {
        "number": "23",
        "name": "PF3",
        "type": "bidirectional",
        "description": "PORT F bit 3. Alt functions: TWI0 SCL (slave alt), ADC0 AIN13, USART2 XDIR, TCA0 WO3 (alt), CCL LUT3-OUT."
      },
      {
        "number": "24",
        "name": "PF4",
        "type": "bidirectional",
        "description": "PORT F bit 4. Alt functions: ADC0 AIN14, USART2 TxD (alt), TCA0 WO4 (alt), TCB0 WO (alt)."
      },
      {
        "number": "25",
        "name": "PF5",
        "type": "bidirectional",
        "description": "PORT F bit 5. Alt functions: ADC0 AIN15, USART2 RxD (alt), TCA0 WO5 (alt), TCB1 WO (alt)."
      },
      {
        "number": "26",
        "name": "PF6/RESET",
        "type": "bidirectional",
        "description": "PORT F bit 6 / external RESET input (active-low). Function selected by the RSTPINCFG fuse: default is GPIO input; when configured as RESET, drive low to reset the device (internal pull-up present). Alt functions: USART2 XCK (alt), CCL LUT3-OUT (alt)."
      },
      {
        "number": "27",
        "name": "UPDI",
        "type": "bidirectional",
        "description": "Unified Program and Debug Interface. Single-wire bidirectional pin used by the UPDI programmer/debugger; keep accessible on a programming header (e.g. 4.7 kΩ series to protect against contention)."
      },
      {
        "number": "28",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply voltage (1.8-5.5 V). Decouple with a 100 nF ceramic close to the pin; supplies the CPU core, PORT A/C/F digital domain and peripherals."
      },
      {
        "number": "29",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the digital supply. Tie to the board's ground plane together with pin 19."
      },
      {
        "number": "30",
        "name": "PA0/EXTCLK",
        "type": "bidirectional",
        "description": "PORT A bit 0 / external clock input (EXTCLK). Alt functions: USART0 TxD, TCA0 WO0, CCL LUT0-IN0."
      },
      {
        "number": "31",
        "name": "PA1",
        "type": "bidirectional",
        "description": "PORT A bit 1. GPIO on VDD domain. Alt functions: USART0 RxD, TCA0 WO1, CCL LUT0-IN1."
      },
      {
        "number": "32",
        "name": "PA2",
        "type": "bidirectional",
        "description": "PORT A bit 2. GPIO on VDD domain. Alt functions: TWI0 SDA (master-slave default), USART0 XCK, TCA0 WO2, TCB0 WO, EVOUTA, CCL LUT0-IN2."
      },
      {
        "number": "EP",
        "name": "EP",
        "type": "passive",
        "description": "Exposed thermal pad on the underside of the VQFN package. Datasheet states it may be left electrically unconnected but must be soldered or glued for mechanical stability; commonly tied to GND for best thermal/EMI performance."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588943153210933248",
        "pages": null,
        "sha256": "11b98b7b422fa15b",
        "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": "atmega1608-mu.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5,
          5,
          0.875
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "atmega1608-mu-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5,
          5,
          0.875
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "a4113b80c5ac86756c8302e20abfb6255efeb3c78b9c5820ce294d7947f77302",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "VQFN-32-EP(5x5)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "33"
    }
  },
  "variants": [
    {
      "mpn": "ATMEGA1608-MU",
      "kind": "packaging"
    },
    {
      "mpn": "ATMEGA1608-MUR",
      "kind": "packaging"
    },
    {
      "mpn": "ATMEGA1608-MUMF",
      "kind": "packaging"
    },
    {
      "mpn": "ATMEGA1608-MUMFR",
      "kind": "packaging"
    },
    {
      "mpn": "ATMEGA1608-MUAU",
      "kind": "packaging"
    },
    {
      "mpn": "ATMEGA1608-MUAUR",
      "kind": "packaging"
    },
    {
      "mpn": "ATMEGA1608-MUAF",
      "kind": "packaging"
    },
    {
      "mpn": "ATMEGA1608-MUAFR",
      "kind": "packaging"
    },
    {
      "mpn": "ATMEGA1608-MUXU",
      "kind": "packaging"
    },
    {
      "mpn": "ATMEGA1608-MUXUR",
      "kind": "packaging"
    },
    {
      "mpn": "ATMEGA1608-MUXF",
      "kind": "packaging"
    },
    {
      "mpn": "ATMEGA1608-MUXFR",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "atmega1608-mu"
  ],
  "discovery_pitch": "ATMEGA1608-MU (Microchip Tech) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "atmega1608-mu.kicad_sym",
    "atmega1608-mu.kicad_mod",
    "atmega1608-mu.glb",
    "atmega1608-mu.step",
    "atmega1608-mu.lbr",
    "docs/hero.png",
    "docs/atmega1608-mu-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:17:21.523Z"
}