ATSAMD21G17A-MU

{
  "slug": "atsamd21g17a-mu",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech Pre-ordered MCUs, QFN-48-EP(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "atsamd21g17a-mu",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "atsamd21g17a-mu.kicad_sym",
    "atsamd21g17a-mu.kicad_mod",
    "atsamd21g17a-mu.glb",
    "atsamd21g17a-mu.step",
    "atsamd21g17a-mu.lbr",
    "docs/hero.png",
    "docs/atsamd21g17a-mu-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "atsamd21g17a-mu-hero.glb",
    "atsamd21g17a-mu-hero.overlay.json",
    "atsamd21g17a-mu-etched.glb"
  ],
  "component": {
    "mpn": "ATSAMD21G17A-MU",
    "manufacturer": "Microchip Tech",
    "package": "QFN-48-EP(7x7)",
    "pin_count": 49,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Pre-ordered MCUs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/5fde52c13eec16c0eb3aac53edbb553a.pdf",
    "parts": {
      "symbol": "atsamd21g17a-mu.kicad_sym",
      "footprint": "atsamd21g17a-mu.kicad_mod",
      "model_3d": "atsamd21g17a-mu-hero.glb",
      "model_3d_plain": "atsamd21g17a-mu-etched.glb",
      "model_3d_step": "atsamd21g17a-mu-etched.step",
      "model_3d_step_plain": "atsamd21g17a-mu.step",
      "lbr": "atsamd21g17a-mu.lbr"
    },
    "distributor_links": {
      "lcsc": "C1338611",
      "digikey": "ATSAMD21G17A-MU-ND",
      "mouser": "556-ATSAMD21G17A-MU"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T16:16:23Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ATSAMD21G17A-MU-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "556-ATSAMD21G17A-MU",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PA00",
        "type": "bidirectional",
        "description": "Port A I/O pin PA00 powered from VDDANA; can be used as external interrupt EXTINT[0] or as the 32 kHz crystal input XIN32 when XOSC32K is enabled."
      },
      {
        "number": "2",
        "name": "PA01",
        "type": "bidirectional",
        "description": "Port A I/O pin PA01 powered from VDDANA; can be used as external interrupt EXTINT[1] or as the 32 kHz crystal output XOUT32 when XOSC32K is enabled."
      },
      {
        "number": "3",
        "name": "PA02",
        "type": "bidirectional",
        "description": "Port A I/O pin PA02 powered from VDDANA; provides analog input AIN[0] and DAC output VOUT, or external interrupt EXTINT[2] (analog functions require peripheral function B to be selected)."
      },
      {
        "number": "4",
        "name": "PA03",
        "type": "bidirectional",
        "description": "Port A I/O pin PA03 powered from VDDANA; provides analog input AIN[1] and external reference VREFA, or external interrupt EXTINT[3] (analog functions require peripheral function B to be selected)."
      },
      {
        "number": "5",
        "name": "GNDANA",
        "type": "power_in",
        "description": "Ground for the analog domain (ADC, DAC, analog comparators and related analog pins)."
      },
      {
        "number": "6",
        "name": "VDDANA",
        "type": "power_in",
        "description": "Analog supply for the analog pins and analog peripherals; the SAM D21 operating voltage range is 1.62V - 3.63V."
      },
      {
        "number": "7",
        "name": "PB08",
        "type": "bidirectional",
        "description": "Port B I/O pin PB08 powered from VDDANA; provides analog input AIN[2], external interrupt EXTINT[8], SERCOM4 pad 0 and TC4 waveform output 0."
      },
      {
        "number": "8",
        "name": "PB09",
        "type": "bidirectional",
        "description": "Port B I/O pin PB09 powered from VDDANA; provides analog input AIN[3], external interrupt EXTINT[9], SERCOM4 pad 1 and TC4 waveform output 1."
      },
      {
        "number": "9",
        "name": "PA04",
        "type": "bidirectional",
        "description": "Port A I/O pin PA04 powered from VDDANA; provides analog input AIN[4], ADC external reference VREFB, external interrupt EXTINT[4] and SERCOM0 pad 0."
      },
      {
        "number": "10",
        "name": "PA05",
        "type": "bidirectional",
        "description": "Port A I/O pin PA05 powered from VDDANA; provides analog input AIN[5], external interrupt EXTINT[5] and SERCOM0 pad 1."
      },
      {
        "number": "11",
        "name": "PA06",
        "type": "bidirectional",
        "description": "Port A I/O pin PA06 powered from VDDANA; provides analog input AIN[6], external interrupt EXTINT[6] and SERCOM0 pad 2."
      },
      {
        "number": "12",
        "name": "PA07",
        "type": "bidirectional",
        "description": "Port A I/O pin PA07 powered from VDDANA; provides analog input AIN[7], external interrupt EXTINT[7] and SERCOM0 pad 3."
      },
      {
        "number": "13",
        "name": "PA08",
        "type": "bidirectional",
        "description": "Port A I/O pin PA08 powered from VDDIO; can be used as non-maskable interrupt NMI, analog input AIN[16], SERCOM0/SERCOM2 pad 0 or I2S SD[0]."
      },
      {
        "number": "14",
        "name": "PA09",
        "type": "bidirectional",
        "description": "Port A I/O pin PA09 powered from VDDIO; can be used as external interrupt EXTINT[9], analog input AIN[17], SERCOM0/SERCOM2 pad 1 or I2S SD[1]."
      },
      {
        "number": "15",
        "name": "PA10",
        "type": "bidirectional",
        "description": "Port A I/O pin PA10 powered from VDDIO; can be used as external interrupt EXTINT[10], analog input AIN[18], SERCOM0/SERCOM2 pad 2 or TCC1 waveform output 0."
      },
      {
        "number": "16",
        "name": "PA11",
        "type": "bidirectional",
        "description": "Port A I/O pin PA11 powered from VDDIO; can be used as external interrupt EXTINT[11], analog input AIN[19], SERCOM0/SERCOM2 pad 3 or TCC1 waveform output 1."
      },
      {
        "number": "17",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Digital I/O supply for the pin group it serves; the SAM D21 operating voltage range is 1.62V - 3.63V."
      },
      {
        "number": "18",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the digital I/O and core domain."
      },
      {
        "number": "19",
        "name": "PB10",
        "type": "bidirectional",
        "description": "Port B I/O pin PB10 powered from VDDIO; can be used as external interrupt EXTINT[10], SERCOM4 pad 2, TC5 waveform output 0 or TCC0 waveform output 4."
      },
      {
        "number": "20",
        "name": "PB11",
        "type": "bidirectional",
        "description": "Port B I/O pin PB11 powered from VDDIO; can be used as external interrupt EXTINT[11], SERCOM4 pad 3, TC5 waveform output 1 or TCC0 waveform output 5."
      },
      {
        "number": "21",
        "name": "PA12",
        "type": "bidirectional",
        "description": "Port A I/O pin PA12 powered from VDDIO; can be used as external interrupt EXTINT[12], SERCOM2/SERCOM4 pad 0, TCC2 waveform output 0 or analog comparator output CMP[0]."
      },
      {
        "number": "22",
        "name": "PA13",
        "type": "bidirectional",
        "description": "Port A I/O pin PA13 powered from VDDIO; can be used as external interrupt EXTINT[13], SERCOM2/SERCOM4 pad 1, TCC2 waveform output 1 or analog comparator output CMP[1]."
      },
      {
        "number": "23",
        "name": "PA14",
        "type": "bidirectional",
        "description": "Port A I/O pin PA14 powered from VDDIO; can be used as external interrupt EXTINT[14], SERCOM2/SERCOM4 pad 2, TC3 waveform output 0 or GCLK_IO[0], and as crystal input XIN when XOSC is enabled."
      },
      {
        "number": "24",
        "name": "PA15",
        "type": "bidirectional",
        "description": "Port A I/O pin PA15 powered from VDDIO; can be used as external interrupt EXTINT[15], SERCOM2/SERCOM4 pad 3, TC3 waveform output 1 or GCLK_IO[1], and as crystal output XOUT when XOSC is enabled."
      },
      {
        "number": "25",
        "name": "PA16",
        "type": "bidirectional",
        "description": "Port A I/O pin PA16 powered from VDDIO; can be used as external interrupt EXTINT[0], SERCOM1/SERCOM3 pad 0, TCC2 waveform output 0 or GCLK_IO[2]."
      },
      {
        "number": "26",
        "name": "PA17",
        "type": "bidirectional",
        "description": "Port A I/O pin PA17 powered from VDDIO; can be used as external interrupt EXTINT[1], SERCOM1/SERCOM3 pad 1, TCC2 waveform output 1 or GCLK_IO[3]."
      },
      {
        "number": "27",
        "name": "PA18",
        "type": "bidirectional",
        "description": "Port A I/O pin PA18 powered from VDDIO; can be used as external interrupt EXTINT[2], SERCOM1/SERCOM3 pad 2, TC3 waveform output 0 or analog comparator output CMP[0]."
      },
      {
        "number": "28",
        "name": "PA19",
        "type": "bidirectional",
        "description": "Port A I/O pin PA19 powered from VDDIO; can be used as external interrupt EXTINT[3], SERCOM1/SERCOM3 pad 3, TC3 waveform output 1 or analog comparator output CMP[1]."
      },
      {
        "number": "29",
        "name": "PA20",
        "type": "bidirectional",
        "description": "Port A I/O pin PA20 powered from VDDIO; can be used as external interrupt EXTINT[4], SERCOM5/SERCOM3 pad 2, TC7 waveform output 0 or GCLK_IO[4]."
      },
      {
        "number": "30",
        "name": "PA21",
        "type": "bidirectional",
        "description": "Port A I/O pin PA21 powered from VDDIO; can be used as external interrupt EXTINT[5], SERCOM5/SERCOM3 pad 3, TC7 waveform output 1 or GCLK_IO[5]."
      },
      {
        "number": "31",
        "name": "PA22",
        "type": "bidirectional",
        "description": "Port A I/O pin PA22 powered from VDDIO; can be used as external interrupt EXTINT[6], SERCOM3/SERCOM5 pad 0, TC4 waveform output 0 or GCLK_IO[6], and supports SERCOM I2C."
      },
      {
        "number": "32",
        "name": "PA23",
        "type": "bidirectional",
        "description": "Port A I/O pin PA23 powered from VDDIO; can be used as external interrupt EXTINT[7], SERCOM3/SERCOM5 pad 1, TC4 waveform output 1, USB SOF 1kHz or GCLK_IO[7], and supports SERCOM I2C."
      },
      {
        "number": "33",
        "name": "PA24",
        "type": "bidirectional",
        "description": "Port A I/O pin PA24 powered from VDDIO; carries USB DM and can be used as external interrupt EXTINT[12], SERCOM3/SERCOM5 pad 2 or TC5 waveform output 0; a pull-up is recommended if the pin is unconnected to avoid extra power consumption (<1mA)."
      },
      {
        "number": "34",
        "name": "PA25",
        "type": "bidirectional",
        "description": "Port A I/O pin PA25 powered from VDDIO; carries USB DP and can be used as external interrupt EXTINT[13], SERCOM3/SERCOM5 pad 3 or TC5 waveform output 1; a pull-up is recommended if the pin is unconnected to avoid extra power consumption (<1mA)."
      },
      {
        "number": "35",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the digital I/O and core domain."
      },
      {
        "number": "36",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Digital I/O supply for the pin group it serves; the SAM D21 operating voltage range is 1.62V - 3.63V."
      },
      {
        "number": "37",
        "name": "PB22",
        "type": "bidirectional",
        "description": "Port B I/O pin PB22 powered from VDDIO; can be used as external interrupt EXTINT[6], SERCOM5 pad 2, TC7 waveform output 0, TCC3 waveform output 0 or GCLK_IO[0]."
      },
      {
        "number": "38",
        "name": "PB23",
        "type": "bidirectional",
        "description": "Port B I/O pin PB23 powered from VDDIO; can be used as external interrupt EXTINT[7], SERCOM5 pad 3, TC7 waveform output 1, TCC3 waveform output 1 or GCLK_IO[1]."
      },
      {
        "number": "39",
        "name": "PA27",
        "type": "bidirectional",
        "description": "Port A I/O pin PA27 powered from VDDIO; can be used as external interrupt EXTINT[15], TCC3 waveform output 6 or GCLK_IO[0]."
      },
      {
        "number": "40",
        "name": "RESET",
        "type": "input",
        "description": "External active-low reset input for the device."
      },
      {
        "number": "41",
        "name": "PA28",
        "type": "bidirectional",
        "description": "Port A I/O pin PA28 powered from VDDIO; can be used as external interrupt EXTINT[8], TCC3 waveform output 7 or GCLK_IO[0]."
      },
      {
        "number": "42",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the digital I/O and core domain."
      },
      {
        "number": "43",
        "name": "VDDCORE",
        "type": "power_out",
        "description": "Regulated output supply of the internal voltage regulator that feeds the device core."
      },
      {
        "number": "44",
        "name": "VDDIN",
        "type": "power_in",
        "description": "Input supply to the internal voltage regulator; the SAM D21 operating voltage range is 1.62V - 3.63V."
      },
      {
        "number": "45",
        "name": "PA30",
        "type": "bidirectional",
        "description": "Port A I/O pin PA30 powered from VDDIO; carries the SWCLK debug clock and can also be used as external interrupt EXTINT[10], SERCOM1 pad 2, TCC1 waveform output 0, TCC3 waveform output 4 or GCLK_IO[0]."
      },
      {
        "number": "46",
        "name": "PA31",
        "type": "bidirectional",
        "description": "Port A I/O pin PA31 powered from VDDIO; carries SWDIO (active only when a debugger is present) and can also be used as external interrupt EXTINT[11], SERCOM1 pad 3, TCC1 waveform output 1 or TCC3 waveform output 5."
      },
      {
        "number": "47",
        "name": "PB02",
        "type": "bidirectional",
        "description": "Port B I/O pin PB02 powered from VDDANA; provides analog input AIN[10], external interrupt EXTINT[2], SERCOM5 pad 0, TC6 waveform output 0 and TCC3 waveform output 2."
      },
      {
        "number": "48",
        "name": "PB03",
        "type": "bidirectional",
        "description": "Port B I/O pin PB03 powered from VDDANA; provides analog input AIN[11], external interrupt EXTINT[3], SERCOM5 pad 1, TC6 waveform output 1 and TCC3 waveform output 3."
      },
      {
        "number": "49",
        "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 hint says QFN-48-EP, but the datasheet pinout (section 5.2.1) lists only pins 1-48 and does not ; Pin 43 VDDCORE is typed power_out because the pinout legend marks it as a REGULATED OUTPUT SUPPLY; t; Pin-to-function mapping was taken from the G-column of the PORT multiplexing table (section 7.1, pag",
          "exposed pad 49 added from the footprint"
        ],
        "pages_sent": 115,
        "cost_usd": 0.6233,
        "at": "2026-10-30T16:15:54"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/5fde52c13eec16c0eb3aac53edbb553a.pdf",
        "pages": 1153,
        "sha256": "98766371fd0886dd",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 49,
        "described": 49,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "atsamd21g17a-mu.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          7.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f2b38b0b4bf967c77e683e8d4599608b9f0503055ec535b93c4ebb5d0163e916",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "atsamd21g17a-mu-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          7.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "5d8546f6234a9d8e05216836e79bab6e22a1ac9739309427e3ce997f17f14d72",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "T3B (48-Lead VQFN 7x7x0.9 mm, 5.15x5.15 mm exposed pad, drawing C04-21425)",
      "source_page": 1077,
      "D": {
        "nom_mm": 7.0,
        "range_mm": [
          null,
          null
        ]
      },
      "E1": {
        "nom_mm": 7.0,
        "range_mm": [
          null,
          null
        ]
      },
      "e": {
        "nom_mm": 0.5,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 0.85,
        "range_mm": [
          0.8,
          0.9
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "atsamd21g17a-mu.step",
        "verdict": "PASS",
        "reasons": [
          "height within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}