ATSAMC21J18A-AUT

{
  "slug": "atsamc21j18a-aut",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), TQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "single chip microcomputer-microcontroller",
    "atsamc21j18a-aut",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "atsamc21j18a-aut.kicad_sym",
    "atsamc21j18a-aut.kicad_mod",
    "atsamc21j18a-aut.glb",
    "atsamc21j18a-aut.step",
    "atsamc21j18a-aut.lbr",
    "docs/hero.png",
    "docs/atsamc21j18a-aut-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "atsamc21j18a-aut-hero.glb",
    "atsamc21j18a-aut-hero.overlay.json",
    "atsamc21j18a-aut-etched.glb"
  ],
  "component": {
    "mpn": "ATSAMC21J18A-AUT",
    "manufacturer": "Microchip Tech",
    "package": "TQFP-64(10x10)",
    "pin_count": 64,
    "category": "Single Chip Microcomputer/Microcontroller",
    "subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/7ca0693ab79435b34d08da2f9e2ec965.pdf",
    "parts": {
      "symbol": "atsamc21j18a-aut.kicad_sym",
      "footprint": "atsamc21j18a-aut.kicad_mod",
      "model_3d": "atsamc21j18a-aut-hero.glb",
      "model_3d_plain": "atsamc21j18a-aut-etched.glb",
      "model_3d_step": "atsamc21j18a-aut-etched.step",
      "model_3d_step_plain": "atsamc21j18a-aut.step",
      "lbr": "atsamc21j18a-aut.lbr"
    },
    "distributor_links": {
      "lcsc": "C2052757",
      "digikey": "ATSAMC21J18A-AUTTR-ND",
      "mouser": "556-ATSAMC21J18A-AUT"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T02:05:01Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ATSAMC21J18A-AUTTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "556-ATSAMC21J18A-AUT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PA00",
        "type": "bidirectional",
        "description": "PORT group A pin 0, multiplexed to EXTINT[0], SERCOM1 PAD[0], TCC2/WO[0] and CMP[2], and also used as XIN32 (32.768 kHz crystal input) per Table 6-5."
      },
      {
        "number": "2",
        "name": "PA01",
        "type": "bidirectional",
        "description": "PORT group A pin 1, multiplexed to EXTINT[1], SERCOM1 PAD[1], TCC2/WO[1] and CMP[3], and also used as XOUT32 (32.768 kHz crystal output) per Table 6-5."
      },
      {
        "number": "3",
        "name": "PA02",
        "type": "bidirectional",
        "description": "PORT group A pin 2, an analog-capable pin on VDDANA with AIN[0], AIN[4], Y[0] and VOUT (DAC output) functions."
      },
      {
        "number": "4",
        "name": "PA03",
        "type": "bidirectional",
        "description": "PORT group A pin 3, an analog-capable pin on VDDANA with AIN[1], AIN[5], Y[1] and the ADC/DAC VREFA reference function."
      },
      {
        "number": "5",
        "name": "PB04",
        "type": "bidirectional",
        "description": "PORT group B pin 4, an analog-capable pin on VDDANA with EXTINT[4], AIN[6] and Y[10] functions."
      },
      {
        "number": "6",
        "name": "PB05",
        "type": "bidirectional",
        "description": "PORT group B pin 5, an analog-capable pin on VDDANA with EXTINT[5], AIN[7] and Y[11] functions."
      },
      {
        "number": "7",
        "name": "GNDANA",
        "type": "power_in",
        "description": "Analog ground reference for the ADC, DAC, and analog comparators."
      },
      {
        "number": "8",
        "name": "VDDANA",
        "type": "power_in",
        "description": "Analog supply for the analog peripherals (ADC, DAC, AC, SDADC, PTC)."
      },
      {
        "number": "9",
        "name": "PB06",
        "type": "bidirectional",
        "description": "PORT group B pin 6, on VDDIO with EXTINT[6], AIN[8], AINN[2], Y[12], SERCOM7 PAD[1] and CCL2/IN[6] functions."
      },
      {
        "number": "10",
        "name": "PB07",
        "type": "bidirectional",
        "description": "PORT group B pin 7, on VDDIO with EXTINT[7], AIN[9], AINP[2], Y[13], SERCOM7 PAD[3] and CCL2/IN[7] functions."
      },
      {
        "number": "11",
        "name": "PB08",
        "type": "bidirectional",
        "description": "PORT group B pin 8, on VDDIO with EXTINT[8], AIN[2], AIN[4], AINN[1], Y[14], SERCOM4 PAD[0] and TC0/WO[0] functions."
      },
      {
        "number": "12",
        "name": "PB09",
        "type": "bidirectional",
        "description": "PORT group B pin 9, on VDDIO with EXTINT[9], AIN[3], AIN[5], AINP[1], Y[15], SERCOM4 PAD[1] and TC0/WO[1] functions."
      },
      {
        "number": "13",
        "name": "PA04",
        "type": "bidirectional",
        "description": "PORT group A pin 4, on VDDANA with EXTINT[4], SDADC/VREFB, AIN[4], AIN[0], Y[2], SERCOM0 PAD[0] and TCC0/WO[0] functions."
      },
      {
        "number": "14",
        "name": "PA05",
        "type": "bidirectional",
        "description": "PORT group A pin 5, on VDDANA with EXTINT[5], AIN[5], AIN[1], Y[3], SERCOM0 PAD[1] and TCC0/WO[1] functions."
      },
      {
        "number": "15",
        "name": "PA06",
        "type": "bidirectional",
        "description": "PORT group A pin 6, on VDDANA with EXTINT[6], AIN[6], AIN[2], Y[4], AINN[0], SERCOM0 PAD[2] and TCC1/WO[0] functions."
      },
      {
        "number": "16",
        "name": "PA07",
        "type": "bidirectional",
        "description": "PORT group A pin 7, on VDDANA with EXTINT[7], AIN[7], AIN[3], Y[5], AINP[0], SERCOM0 PAD[3] and TCC1/WO[1] functions."
      },
      {
        "number": "17",
        "name": "PA08",
        "type": "bidirectional",
        "description": "PORT group A pin 8, on VDDIO with NMI, AIN[8], AIN[10], X[0]/Y[16], SERCOM0 PAD[0], SERCOM2 PAD[0], TCC0/WO[0] and TCC1/WO[2] functions."
      },
      {
        "number": "18",
        "name": "PA09",
        "type": "bidirectional",
        "description": "PORT group A pin 9, on VDDIO with EXTINT[9], AIN[9], AIN[11], X[1]/Y[17], SERCOM0 PAD[1], SERCOM2 PAD[1], TCC0/WO[1] and TCC1/WO[3] functions."
      },
      {
        "number": "19",
        "name": "PA10",
        "type": "bidirectional",
        "description": "PORT group A pin 10, on VDDIO with EXTINT[10], AIN[10], X[2]/Y[18], SERCOM0 PAD[2], SERCOM2 PAD[2], TCC1/WO[0], TCC0/WO[2] and GCLK_IO[4] functions."
      },
      {
        "number": "20",
        "name": "PA11",
        "type": "bidirectional",
        "description": "PORT group A pin 11, on VDDIO with EXTINT[11], AIN[11], X[3]/Y[19], SERCOM0 PAD[3], SERCOM2 PAD[3], TCC1/WO[1], TCC0/WO[3] and GCLK_IO[5] functions."
      },
      {
        "number": "21",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Digital I/O supply for the GPIO ring of this package."
      },
      {
        "number": "22",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "23",
        "name": "PB10",
        "type": "bidirectional",
        "description": "PORT group B pin 10, on VDDIO with EXTINT[10], SERCOM4 PAD[2], TC1/WO[0], TCC0/WO[4], CAN1/TX and GCLK_IO[4] functions."
      },
      {
        "number": "24",
        "name": "PB11",
        "type": "bidirectional",
        "description": "PORT group B pin 11, on VDDIO with EXTINT[11], SERCOM4 PAD[3], TC1/WO[1], TCC0/WO[5], CAN1/RX and GCLK_IO[5] functions."
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "PORT group B pin 12, on VDDIO with EXTINT[12], X[12]/Y[28], SERCOM4 PAD[0], TC0/WO[0], TCC0/WO[6] and GCLK_IO[6] functions."
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "PORT group B pin 13, on VDDIO with EXTINT[13], X[13]/Y[29], SERCOM4 PAD[1], TC0/WO[1], TCC0/WO[7] and GCLK_IO[7] functions."
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "PORT group B pin 14, on VDDIO with EXTINT[14], X[14]/Y[30], SERCOM4 PAD[2], TC1/WO[0], CAN1/TX, GCLK_IO[0] and CCL3/IN[9] functions."
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "PORT group B pin 15, on VDDIO with EXTINT[15], X[15]/Y[31], SERCOM4 PAD[3], TC1/WO[1], CAN1/RX, GCLK_IO[1] and CCL3/IN[10] functions."
      },
      {
        "number": "29",
        "name": "PA12",
        "type": "bidirectional",
        "description": "PORT group A pin 12, on VDDIO with EXTINT[12], SERCOM2 PAD[0], SERCOM4 PAD[0], TCC2/WO[0], TCC0/WO[6] and AC/CMP[0] functions."
      },
      {
        "number": "30",
        "name": "PA13",
        "type": "bidirectional",
        "description": "PORT group A pin 13, on VDDIO with EXTINT[13], SERCOM2 PAD[1], SERCOM4 PAD[1], TCC2/WO[1], TCC0/WO[7] and AC/CMP[1] functions."
      },
      {
        "number": "31",
        "name": "PA14",
        "type": "bidirectional",
        "description": "PORT group A pin 14, on VDDIO with EXTINT[14], SERCOM2 PAD[2], SERCOM4 PAD[2], TC4/WO[0], TCC0/WO[4] and GCLK_IO[0] functions; also the XOSC input (XIN) per Table 6-5."
      },
      {
        "number": "32",
        "name": "PA15",
        "type": "bidirectional",
        "description": "PORT group A pin 15, on VDDIO with EXTINT[15], SERCOM2 PAD[3], SERCOM4 PAD[3], TC4/WO[1], TCC0/WO[5] and GCLK_IO[1] functions; also the XOSC output (XOUT) per Table 6-5."
      },
      {
        "number": "33",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "34",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Digital I/O supply for the GPIO ring of this package."
      },
      {
        "number": "35",
        "name": "PA16",
        "type": "bidirectional",
        "description": "PORT group A pin 16, on VDDIO with EXTINT[0], X[4]/Y[20], SERCOM1 PAD[0], SERCOM3 PAD[0], TCC2/WO[0], TCC0/WO[6], GCLK_IO[2] and CCL0/IN[0] functions."
      },
      {
        "number": "36",
        "name": "PA17",
        "type": "bidirectional",
        "description": "PORT group A pin 17, on VDDIO with EXTINT[1], X[5]/Y[21], SERCOM1 PAD[1], SERCOM3 PAD[1], TCC2/WO[1], TCC0/WO[7], GCLK_IO[3] and CCL0/IN[1] functions."
      },
      {
        "number": "37",
        "name": "PA18",
        "type": "bidirectional",
        "description": "PORT group A pin 18, on VDDIO with EXTINT[2], X[6]/Y[22], SERCOM1 PAD[2], SERCOM3 PAD[2], TC4/WO[0], TCC0/WO[2], AC/CMP[0] and CCL0/IN[2] functions."
      },
      {
        "number": "38",
        "name": "PA19",
        "type": "bidirectional",
        "description": "PORT group A pin 19, on VDDIO with EXTINT[3], X[7]/Y[23], SERCOM1 PAD[3], SERCOM3 PAD[3], TC4/WO[1], TCC0/WO[3], AC/CMP[1] and CCL0/OUT[0] functions."
      },
      {
        "number": "39",
        "name": "PB16",
        "type": "bidirectional",
        "description": "PORT group B pin 16, on VDDIO with EXTINT[0], SERCOM5 PAD[0], TC2/WO[0], TCC0/WO[4], GCLK_IO[2] and CCL3/IN[11] functions."
      },
      {
        "number": "40",
        "name": "PB17",
        "type": "bidirectional",
        "description": "PORT group B pin 17, on VDDIO with EXTINT[1], SERCOM5 PAD[1], TC2/WO[1], TCC0/WO[5], GCLK_IO[3] and CCL3/OUT[3] functions."
      },
      {
        "number": "41",
        "name": "PA20",
        "type": "bidirectional",
        "description": "PORT group A pin 20, on VDDIO with EXTINT[4], X[8]/Y[24], SERCOM5 PAD[2], SERCOM3 PAD[2], TC3/WO[0], TCC0/WO[6] and GCLK_IO[4] functions."
      },
      {
        "number": "42",
        "name": "PA21",
        "type": "bidirectional",
        "description": "PORT group A pin 21, on VDDIO with EXTINT[5], X[9]/Y[25], SERCOM5 PAD[3], SERCOM3 PAD[3], TC3/WO[1], TCC0/WO[7] and GCLK_IO[5] functions."
      },
      {
        "number": "43",
        "name": "PA22",
        "type": "bidirectional",
        "description": "PORT group A pin 22, on VDDIO with EXTINT[6], X[10]/Y[26], SERCOM3 PAD[0], SERCOM5 PAD[0], TC0/WO[0], TCC0/WO[4], GCLK_IO[6] and CCL2/IN[6] functions."
      },
      {
        "number": "44",
        "name": "PA23",
        "type": "bidirectional",
        "description": "PORT group A pin 23, on VDDIO with EXTINT[7], X[11]/Y[27], SERCOM3 PAD[1], SERCOM5 PAD[1], TC0/WO[1], TCC0/WO[5], GCLK_IO[7] and CCL2/IN[7] functions."
      },
      {
        "number": "45",
        "name": "PA24",
        "type": "bidirectional",
        "description": "PORT group A pin 24, 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] functions."
      },
      {
        "number": "46",
        "name": "PA25",
        "type": "bidirectional",
        "description": "PORT group A pin 25, 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] functions."
      },
      {
        "number": "47",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "48",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Digital I/O supply for the GPIO ring of this package."
      },
      {
        "number": "49",
        "name": "PB22",
        "type": "bidirectional",
        "description": "PORT group B pin 22, on VDDIN with EXTINT[6], SERCOM5 PAD[2], TC3/WO[0], CAN0/TX, GCLK_IO[0] and CCL0/IN[0] functions."
      },
      {
        "number": "50",
        "name": "PB23",
        "type": "bidirectional",
        "description": "PORT group B pin 23, on VDDIN with EXTINT[7], SERCOM5 PAD[3], TC3/WO[1], CAN0/RX, GCLK_IO[1] and CCL0/OUT[0] functions."
      },
      {
        "number": "51",
        "name": "PA27",
        "type": "bidirectional",
        "description": "PORT group A pin 27, on VDDIN with EXTINT[15] and GCLK_IO[0] functions."
      },
      {
        "number": "52",
        "name": "RESET",
        "type": "input",
        "description": "External active-low reset input pin."
      },
      {
        "number": "53",
        "name": "PA28",
        "type": "bidirectional",
        "description": "PORT group A pin 28, on VDDIN with EXTINT[8] and GCLK_IO[0] functions."
      },
      {
        "number": "54",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "55",
        "name": "VDDCORE",
        "type": "power_out",
        "description": "Regulated output of the internal voltage regulator that supplies the core; it is not an external supply input."
      },
      {
        "number": "56",
        "name": "VDDIN",
        "type": "power_in",
        "description": "Input supply for the internal voltage regulator and the VDDIN-domain I/O (also used by PA27, PA28, PA30, PA31, PB22, PB23, PB30, PB31)."
      },
      {
        "number": "57",
        "name": "PA30",
        "type": "bidirectional",
        "description": "PORT group A pin 30, on VDDIN with EXTINT[10], SERCOM1 PAD[2], TCC1/WO[0], CORTEX_M0P/SWCLK (Serial Wire Debug clock), GCLK_IO[0] and CCL1/IN[3] functions."
      },
      {
        "number": "58",
        "name": "PA31",
        "type": "bidirectional",
        "description": "PORT group A pin 31, on VDDIN with EXTINT[11], SERCOM1 PAD[3], TCC1/WO[1], CORTEX_M0P/SWDIO (Serial Wire Debug data) and CCL1/OUT[1] functions."
      },
      {
        "number": "59",
        "name": "PB30",
        "type": "bidirectional",
        "description": "PORT group B pin 30, on VDDIN with EXTINT[14], SERCOM5 PAD[0], TCC0/WO[0], TCC1/WO[2] and AC/CMP[2] functions."
      },
      {
        "number": "60",
        "name": "PB31",
        "type": "bidirectional",
        "description": "PORT group B pin 31, on VDDIN with EXTINT[15], SERCOM5 PAD[1], TCC0/WO[1], TCC1/WO[3] and AC/CMP[3] functions."
      },
      {
        "number": "61",
        "name": "PB00",
        "type": "bidirectional",
        "description": "PORT group B pin 0, on VDDANA with EXTINT[0], AIN[0], Y[6], SERCOM5 PAD[2], TC3/WO[0] and CCL0/IN[1] functions."
      },
      {
        "number": "62",
        "name": "PB01",
        "type": "bidirectional",
        "description": "PORT group B pin 1, on VDDANA with EXTINT[1], AIN[1], Y[7], SERCOM5 PAD[3], TC3/WO[1] and CCL0/IN[2] functions."
      },
      {
        "number": "63",
        "name": "PB02",
        "type": "bidirectional",
        "description": "PORT group B pin 2, on VDDANA with EXTINT[2], AIN[2], Y[8], SERCOM5 PAD[0], TC2/WO[0] and CCL0/OUT[0] functions."
      },
      {
        "number": "64",
        "name": "PB03",
        "type": "bidirectional",
        "description": "PORT group B pin 3, on VDDANA with EXTINT[3], AIN[3], Y[9], SERCOM5 PAD[1] and TC2/WO[1] functions."
      }
    ],
    "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: Pinout taken from the VQFN64/TQFP64 diagram on page 23 (SAM C21J/C20J). The ordering code -A-U-T giv"
        ],
        "pages_sent": 104,
        "cost_usd": 0.1757,
        "at": "2026-10-27T02:04:37"
      },
      "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": 64,
        "described": 64,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "atsamc21j18a-aut.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          12.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "60567e81b0770b6c519104183a7a05ba52dddc11146b5fbe21434fbb5801696c",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "atsamc21j18a-aut-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": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "05b07d811262770b9682a59ec9503c539b19b78ad06c0e060d68bb28f20bc89d",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}