ATSAMC21G18A-AUT

{
  "slug": "atsamc21g18a-aut",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech MICROCHIP, TQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "atsamc21g18a-aut",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "atsamc21g18a-aut.kicad_sym",
    "atsamc21g18a-aut.kicad_mod",
    "atsamc21g18a-aut.glb",
    "atsamc21g18a-aut.step",
    "atsamc21g18a-aut.lbr",
    "docs/hero.png",
    "docs/atsamc21g18a-aut-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "atsamc21g18a-aut-hero.glb",
    "atsamc21g18a-aut-hero.overlay.json",
    "atsamc21g18a-aut-etched.glb"
  ],
  "component": {
    "mpn": "ATSAMC21G18A-AUT",
    "manufacturer": "Microchip Tech",
    "package": "TQFP-48(7x7)",
    "pin_count": 48,
    "category": "Embedded Processors & Controllers",
    "subcategory": "MICROCHIP",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/7ca0693ab79435b34d08da2f9e2ec965.pdf",
    "parts": {
      "symbol": "atsamc21g18a-aut.kicad_sym",
      "footprint": "atsamc21g18a-aut.kicad_mod",
      "model_3d": "atsamc21g18a-aut-hero.glb",
      "model_3d_plain": "atsamc21g18a-aut-etched.glb",
      "model_3d_step": "atsamc21g18a-aut-etched.step",
      "model_3d_step_plain": "atsamc21g18a-aut.step",
      "lbr": "atsamc21g18a-aut.lbr"
    },
    "distributor_links": {
      "lcsc": "C124133",
      "digikey": "ATSAMC21G18A-AUTTR-ND",
      "mouser": "556-ATSAMC21G18A-AUT"
    },
    "distributor_check": {
      "checked_at": "2026-10-24T00:08:52Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ATSAMC21G18A-AUTTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "556-ATSAMC21G18A-AUT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PA00",
        "type": "bidirectional",
        "description": "GPIO on VDDANA with EXTINT[0], SERCOM1/PAD[0], TCC2/WO[0], AC CMP[2] and XIN32 (32.768 kHz crystal input)."
      },
      {
        "number": "2",
        "name": "PA01",
        "type": "bidirectional",
        "description": "GPIO on VDDANA with EXTINT[1], SERCOM1/PAD[1], TCC2/WO[1], AC CMP[3] and XOUT32 (32.768 kHz crystal output)."
      },
      {
        "number": "3",
        "name": "PA02",
        "type": "bidirectional",
        "description": "GPIO on VDDANA with EXTINT[2], ADC0 AIN[0], ADC1 AIN[4], PTC Y[0] and DAC VOUT."
      },
      {
        "number": "4",
        "name": "PA03",
        "type": "bidirectional",
        "description": "GPIO on VDDANA with EXTINT[3], ADC/DAC external reference VREFA, ADC0 AIN[1], ADC1 AIN[5] and PTC Y[1]."
      },
      {
        "number": "5",
        "name": "GNDANA",
        "type": "power_in",
        "description": "Analog ground reference."
      },
      {
        "number": "6",
        "name": "VDDANA",
        "type": "power_in",
        "description": "Analog supply input for the VDDANA-domain pins."
      },
      {
        "number": "7",
        "name": "PB08",
        "type": "bidirectional",
        "description": "GPIO on VDDANA with EXTINT[8], ADC0 AIN[2], ADC1 AIN[4], PTC Y[14], SDADC AINN[1], SERCOM4/PAD[0], TC0/WO[0] and CCL2/IN[8]."
      },
      {
        "number": "8",
        "name": "PB09",
        "type": "bidirectional",
        "description": "GPIO on VDDANA with EXTINT[9], ADC0 AIN[3], ADC1 AIN[5], PTC Y[15], SDADC AINP[1], SERCOM4/PAD[1], TC0/WO[1] and CCL2/OUT[2]."
      },
      {
        "number": "9",
        "name": "PA04",
        "type": "bidirectional",
        "description": "GPIO on VDDANA with EXTINT[4], SDADC VREFB, ADC0 AIN[4], ADC1 AIN[0], PTC Y[2], SERCOM0/PAD[0], TCC0/WO[0] and CCL0/IN[0]."
      },
      {
        "number": "10",
        "name": "PA05",
        "type": "bidirectional",
        "description": "GPIO on VDDANA with EXTINT[5], ADC0 AIN[5], ADC1 AIN[1], PTC Y[3], SERCOM0/PAD[1], TCC0/WO[1] and CCL0/IN[1]."
      },
      {
        "number": "11",
        "name": "PA06",
        "type": "bidirectional",
        "description": "GPIO on VDDANA with EXTINT[6], ADC0 AIN[6], ADC1 AIN[2], PTC Y[4], SDADC AINN[0], SERCOM0/PAD[2], TCC1/WO[0] and CCL0/IN[2]."
      },
      {
        "number": "12",
        "name": "PA07",
        "type": "bidirectional",
        "description": "GPIO on VDDANA with EXTINT[7], ADC0 AIN[7], ADC1 AIN[3], PTC Y[5], SDADC AINP[0], SERCOM0/PAD[3], TCC1/WO[1] and CCL0/OUT[0]."
      },
      {
        "number": "13",
        "name": "PA08",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with NMI, ADC0 AIN[8], ADC1 AIN[10], PTC X[0]/Y[16], SERCOM0/PAD[0], SERCOM2/PAD[0], TCC0/WO[0], TCC1/WO[2] and CCL1/IN[3]; supports I2C."
      },
      {
        "number": "14",
        "name": "PA09",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[9], ADC0 AIN[9], ADC1 AIN[11], PTC X[1]/Y[17], SERCOM0/PAD[1], SERCOM2/PAD[1], TCC0/WO[1], TCC1/WO[3] and CCL1/IN[4]; supports I2C."
      },
      {
        "number": "15",
        "name": "PA10",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[10], ADC1 AIN[10], PTC X[2]/Y[18], SERCOM0/PAD[2], SERCOM2/PAD[2], TCC1/WO[0], TCC0/WO[2], GCLK_IO[4] and CCL1/IN[5]."
      },
      {
        "number": "16",
        "name": "PA11",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[11], ADC1 AIN[11], PTC X[3]/Y[19], SERCOM0/PAD[3], SERCOM2/PAD[3], TCC1/WO[1], TCC0/WO[3], GCLK_IO[5] and CCL1/OUT[1]."
      },
      {
        "number": "17",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Digital I/O supply input for the VDDIO-domain pins."
      },
      {
        "number": "18",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "19",
        "name": "PB10",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[10], SERCOM4/PAD[2], TC1/WO[0], TCC0/WO[4], CAN1/TX, GCLK_IO[4] and CCL1/IN[5]."
      },
      {
        "number": "20",
        "name": "PB11",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[11], SERCOM4/PAD[3], TC1/WO[1], TCC0/WO[5], CAN1/RX, GCLK_IO[5] and CCL1/OUT[1]."
      },
      {
        "number": "21",
        "name": "PA12",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[12], SERCOM2/PAD[0], SERCOM4/PAD[0], TCC2/WO[0], TCC0/WO[6] and AC CMP[0]; supports I2C."
      },
      {
        "number": "22",
        "name": "PA13",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[13], SERCOM2/PAD[1], SERCOM4/PAD[1], TCC2/WO[1], TCC0/WO[7] and AC CMP[1]; supports I2C."
      },
      {
        "number": "23",
        "name": "PA14",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[14], SERCOM2/PAD[2], SERCOM4/PAD[2], TC4/WO[0], TCC0/WO[4], GCLK_IO[0] and XIN (crystal or external clock input)."
      },
      {
        "number": "24",
        "name": "PA15",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[15], SERCOM2/PAD[3], SERCOM4/PAD[3], TC4/WO[1], TCC0/WO[5], GCLK_IO[1] and XOUT (crystal output)."
      },
      {
        "number": "25",
        "name": "PA16",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[0], PTC X[4]/Y[20], SERCOM1/PAD[0], SERCOM3/PAD[0], TCC2/WO[0], TCC0/WO[6], GCLK_IO[2] and CCL0/IN[0]; supports I2C."
      },
      {
        "number": "26",
        "name": "PA17",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[1], PTC X[5]/Y[21], SERCOM1/PAD[1], SERCOM3/PAD[1], TCC2/WO[1], TCC0/WO[7], GCLK_IO[3] and CCL0/IN[1]; supports I2C."
      },
      {
        "number": "27",
        "name": "PA18",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[2], PTC X[6]/Y[22], SERCOM1/PAD[2], SERCOM3/PAD[2], TC4/WO[0], TCC0/WO[2], AC CMP[0] and CCL0/IN[2]."
      },
      {
        "number": "28",
        "name": "PA19",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[3], PTC X[7]/Y[23], SERCOM1/PAD[3], SERCOM3/PAD[3], TC4/WO[1], TCC0/WO[3], AC CMP[1] and CCL0/OUT[0]."
      },
      {
        "number": "29",
        "name": "PA20",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[4], PTC X[8]/Y[24], SERCOM5/PAD[2], SERCOM3/PAD[2], TC3/WO[0], TCC0/WO[6] and GCLK_IO[4]."
      },
      {
        "number": "30",
        "name": "PA21",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[5], PTC X[9]/Y[25], SERCOM5/PAD[3], SERCOM3/PAD[3], TC3/WO[1], TCC0/WO[7] and GCLK_IO[5]."
      },
      {
        "number": "31",
        "name": "PA22",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[6], PTC X[10]/Y[26], SERCOM3/PAD[0], SERCOM5/PAD[0], TC0/WO[0], TCC0/WO[4], GCLK_IO[6] and CCL2/IN[6]; supports I2C."
      },
      {
        "number": "32",
        "name": "PA23",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[7], PTC X[11]/Y[27], SERCOM3/PAD[1], SERCOM5/PAD[1], TC0/WO[1], TCC0/WO[5], GCLK_IO[7] and CCL2/IN[7]; supports I2C."
      },
      {
        "number": "33",
        "name": "PA24",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[12], SERCOM3/PAD[2], SERCOM5/PAD[2], TC1/WO[0], TCC1/WO[2], CAN0/TX, AC CMP[2] and CCL2/IN[8]."
      },
      {
        "number": "34",
        "name": "PA25",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[13], SERCOM3/PAD[3], SERCOM5/PAD[3], TC1/WO[1], TCC1/WO[3], CAN0/RX, AC CMP[3] and CCL2/OUT[2]."
      },
      {
        "number": "35",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "36",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Digital I/O supply input for the VDDIO-domain pins."
      },
      {
        "number": "37",
        "name": "PB22",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[6], SERCOM5/PAD[2], TC3/WO[0], CAN0/TX, GCLK_IO[0] and CCL0/IN[0]."
      },
      {
        "number": "38",
        "name": "PB23",
        "type": "bidirectional",
        "description": "GPIO on VDDIO with EXTINT[7], SERCOM5/PAD[3], TC3/WO[1], CAN0/RX, GCLK_IO[1] and CCL0/OUT[0]."
      },
      {
        "number": "39",
        "name": "PA27",
        "type": "bidirectional",
        "description": "GPIO on VDDIN with EXTINT[15] and GCLK_IO[0]."
      },
      {
        "number": "40",
        "name": "RESET",
        "type": "input",
        "description": "External reset input, active low."
      },
      {
        "number": "41",
        "name": "PA28",
        "type": "bidirectional",
        "description": "GPIO on VDDIN with EXTINT[8] and GCLK_IO[0]."
      },
      {
        "number": "42",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "43",
        "name": "VDDCORE",
        "type": "power_out",
        "description": "Regulated output supply for the core."
      },
      {
        "number": "44",
        "name": "VDDIN",
        "type": "power_in",
        "description": "Input supply for the internal regulator and the VDDIN-domain pins."
      },
      {
        "number": "45",
        "name": "PA30",
        "type": "bidirectional",
        "description": "GPIO on VDDIN with EXTINT[10], SERCOM1/PAD[2], TCC1/WO[0], GCLK_IO[0], CCL1/IN[3] and SWCLK (serial wire debug clock)."
      },
      {
        "number": "46",
        "name": "PA31",
        "type": "bidirectional",
        "description": "GPIO on VDDIN with EXTINT[11], SERCOM1/PAD[3], TCC1/WO[1], CCL1/OUT[1] and SWDIO (serial wire debug data)."
      },
      {
        "number": "47",
        "name": "PB02",
        "type": "bidirectional",
        "description": "GPIO on VDDANA with EXTINT[2], ADC0 AIN[2], PTC Y[8], SERCOM5/PAD[0], TC2/WO[0] and CCL0/OUT[0]."
      },
      {
        "number": "48",
        "name": "PB03",
        "type": "bidirectional",
        "description": "GPIO on VDDANA with EXTINT[3], ADC0 AIN[3], PTC Y[9], SERCOM5/PAD[1] and TC2/WO[1]."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: In the page 22 pinout text the label PA21 is separated from its pin number 30; assigned PA21 to pin ; VDDCORE is labeled 'regulated output supply'; typed power_out. The datasheet text given does not sta"
        ],
        "pages_sent": 104,
        "cost_usd": 1.0061,
        "at": "2026-10-24T00:08:28"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/7ca0693ab79435b34d08da2f9e2ec965.pdf",
        "pages": 1206,
        "sha256": "5991eaad10c5cd35",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 48,
        "described": 48,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "atsamc21g18a-aut.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": "14ca7676e4932e92f0eca0c6d56ce3018cd28a2531204a70ab7bbacb3eeb3cf5",
        "checked": "2026-10-24",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "atsamc21g18a-aut-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": "48d5a0cf6448d5df75f70dd597e0e0233769cf3d69c678bf9e7f84224f836f57",
        "checked": "2026-10-24",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}