ATSAMC21E18A-AUT

{
  "schema_version": 1,
  "type": "component",
  "slug": "atsamc21e18a-aut",
  "title": "ATSAMC21E18A-AUT",
  "brief": "Microchip Tech MICROCHIP, 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",
    "atsamc21e18a-aut",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ATSAMC21E18A-AUT",
    "manufacturer": "Microchip Tech",
    "package": "TQFP-32(7x7)",
    "pin_count": 32,
    "category": "Embedded Processors & Controllers",
    "subcategory": "MICROCHIP",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/fea00a63f3814947957d683af2b86ed5.pdf",
    "parts": {
      "symbol": "atsamc21e18a-aut.kicad_sym",
      "footprint": "atsamc21e18a-aut.kicad_mod",
      "model_3d": "atsamc21e18a-aut-hero.glb",
      "model_3d_plain": "atsamc21e18a-aut-etched.glb",
      "model_3d_step": "atsamc21e18a-aut-etched.step",
      "model_3d_step_plain": "atsamc21e18a-aut.step",
      "lbr": "atsamc21e18a-aut.lbr"
    },
    "distributor_links": {
      "lcsc": "C124134",
      "digikey": "ATSAMC21E18A-AUTTR-ND",
      "mouser": "556-ATSAMC21E18A-AUT"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T01:23:14Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ATSAMC21E18A-AUTTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "556-ATSAMC21E18A-AUT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PA00",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDANA supply with EXTINT[0], SERCOM1 PAD[0], TCC2/WO[0] and AC/CMP[2]; also XIN32 for the 32.768kHz crystal oscillator."
      },
      {
        "number": "2",
        "name": "PA01",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDANA supply with EXTINT[1], SERCOM1 PAD[1], TCC2/WO[1] and AC/CMP[3]; also XOUT32 for the 32.768kHz crystal oscillator."
      },
      {
        "number": "3",
        "name": "PA02",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDANA supply with EXTINT[2], ADC input AIN[0], PTC Y[0] and DAC VOUT."
      },
      {
        "number": "4",
        "name": "PA03",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDANA supply with EXTINT[3], ADC/VREFA external reference (2.0V to VDDANA-0.6V for ADC), ADC AIN[1] and PTC Y[1]."
      },
      {
        "number": "5",
        "name": "PA04",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDANA supply with EXTINT[4], ADC analog input, PTC Y[2], SERCOM0 PAD[0] and TCC0/WO[0]."
      },
      {
        "number": "6",
        "name": "PA05",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDANA supply with EXTINT[5], ADC analog input, PTC Y[3], SERCOM0 PAD[1] and TCC0/WO[1]."
      },
      {
        "number": "7",
        "name": "PA06",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDANA supply with EXTINT[6], ADC analog input, PTC Y[4], AC input INN[0], SERCOM0 PAD[2] and TCC1/WO[0]."
      },
      {
        "number": "8",
        "name": "PA07",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDANA supply with EXTINT[7], ADC analog input, PTC Y[5], AC input INP[0], SERCOM0 PAD[3] and TCC1/WO[1]."
      },
      {
        "number": "9",
        "name": "VDDANA",
        "type": "power_in",
        "description": "Analog supply input, 2.7V to 5.5V, with 100nF and 10µF decoupling; on the 32-pin package it is also the supply pin for the VDDIO I/O group (GPIO cluster table)."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin (also the return for the analog domain on the 32-pin package)."
      },
      {
        "number": "11",
        "name": "PA08",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDIO supply with NMI, ADC inputs, PTC X[0]/Y[16], SERCOM0/SERCOM2 PAD[0] (I2C capable) and TCC0/WO[0]."
      },
      {
        "number": "12",
        "name": "PA09",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDIO supply with EXTINT[9], ADC inputs, PTC X[1]/Y[17], SERCOM0/SERCOM2 PAD[1] (I2C capable) and TCC0/WO[1]."
      },
      {
        "number": "13",
        "name": "PA10",
        "type": "bidirectional",
        "description": "High-sink general-purpose I/O on VDDIO supply with EXTINT[10], PTC X[2]/Y[18], SERCOM0/SERCOM2 PAD[2], TCC1/WO[0] and GCLK_IO[4]."
      },
      {
        "number": "14",
        "name": "PA11",
        "type": "bidirectional",
        "description": "High-sink general-purpose I/O on VDDIO supply with EXTINT[11], PTC X[3]/Y[19], SERCOM0/SERCOM2 PAD[3], TCC1/WO[1] and GCLK_IO[5]."
      },
      {
        "number": "15",
        "name": "PA14",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDIO supply with EXTINT[14], SERCOM2/SERCOM4 PAD[2], TC4/WO[0] and GCLK_IO[0]; also XIN for the external crystal/clock oscillator."
      },
      {
        "number": "16",
        "name": "PA15",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDIO supply with EXTINT[15], SERCOM2/SERCOM4 PAD[3], TC4/WO[1] and GCLK_IO[1]; also XOUT for the external crystal oscillator."
      },
      {
        "number": "17",
        "name": "PA16",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDIO supply with EXTINT[0], PTC X[4]/Y[20], SERCOM1/SERCOM3 PAD[0] (I2C capable), TCC2/WO[0] and GCLK_IO[2]."
      },
      {
        "number": "18",
        "name": "PA17",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDIO supply with EXTINT[1], PTC X[5]/Y[21], SERCOM1/SERCOM3 PAD[1] (I2C capable), TCC2/WO[1] and GCLK_IO[3]."
      },
      {
        "number": "19",
        "name": "PA18",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDIO supply with EXTINT[2], PTC X[6]/Y[22], SERCOM1/SERCOM3 PAD[2], TC4/WO[0] and AC/CMP[0]."
      },
      {
        "number": "20",
        "name": "PA19",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDIO supply with EXTINT[3], PTC X[7]/Y[23], SERCOM1/SERCOM3 PAD[3], TC4/WO[1] and AC/CMP[1]."
      },
      {
        "number": "21",
        "name": "PA22",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDIO supply with EXTINT[6], PTC X[10]/Y[26], SERCOM3/SERCOM5 PAD[0] (I2C capable), TC0/WO[0] and GCLK_IO[6]."
      },
      {
        "number": "22",
        "name": "PA23",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDIO supply with EXTINT[7], PTC X[11]/Y[27], SERCOM3/SERCOM5 PAD[1] (I2C capable), TC0/WO[1] and GCLK_IO[7]."
      },
      {
        "number": "23",
        "name": "PA24",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDIO supply with EXTINT[12], SERCOM3 PAD[2], TC1/WO[0], CAN0/TX and AC/CMP[2]."
      },
      {
        "number": "24",
        "name": "PA25",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDIO supply with EXTINT[13], SERCOM3 PAD[3], TC1/WO[1], CAN0/RX and AC/CMP[3]."
      },
      {
        "number": "25",
        "name": "PA27",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDIN supply with EXTINT[15] and GCLK_IO[0]."
      },
      {
        "number": "26",
        "name": "RESETN",
        "type": "input",
        "description": "Active-low external reset input with internal pull-up; low-level threshold below 0.3*VDDIO."
      },
      {
        "number": "27",
        "name": "PA28",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDIN supply with EXTINT[8] and GCLK_IO[0]."
      },
      {
        "number": "28",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "29",
        "name": "VDDCORE",
        "type": "power_out",
        "description": "Regulated core supply output/external decoupling pin, 1.1V to 1.3V typical, with 100nF and 1µF capacitors."
      },
      {
        "number": "30",
        "name": "VDDIN",
        "type": "power_in",
        "description": "Digital supply input, 2.7V to 5.5V, with 100nF and 10µF decoupling."
      },
      {
        "number": "31",
        "name": "PA30",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDIN supply with EXTINT[10] and SERCOM1 PAD[2]; also SWCLK serial wire debug clock (1kΩ pull-up recommended)."
      },
      {
        "number": "32",
        "name": "PA31",
        "type": "bidirectional",
        "description": "General-purpose I/O on VDDIN supply with EXTINT[11] and SERCOM1 PAD[3]; also SWDIO serial wire debug data."
      }
    ],
    "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: The 32-pin package has no VDDIO pin. The GPIO cluster table (page 36) lists VDDIO (9), so pin 9 VDDA; Peripheral-function lists are taken from the E column of Table 6-2, which was flattened in extractio; The datasheet text covers the SAM C20/C21 family. Pin numbers come from the QFN32/TQFP32 pinout figu"
        ],
        "pages_sent": 122,
        "cost_usd": 0.9653,
        "at": "2026-10-27T01:22:44"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/fea00a63f3814947957d683af2b86ed5.pdf",
        "pages": 1107,
        "sha256": "57e02a68f2f793d5",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 32,
        "described": 32,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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        "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": "53431be61c684e9d923915676a90cb08050c23ee3f834d76a77a3b19b41422f1",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
        "file": "atsamc21e18a-aut-etched.step",
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        "sha256": "8882a3f8302a1cbedc9a28fbf11e059180761da1f3938bb45f9480a404aebd08",
        "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"
    },
    "appearance": {
      "contacts": {
        "quote": "configurations, including indium tin oxide (ITO) sensor grids. The PTC requires one pin per X-line and one pin per Y-line.",
        "page": 977,
        "doc": "ds.pdf",
        "plating": "tin"
      },
      "version": 1,
      "datasheet_sha256": "57e02a68f2f793d568b58dd581ab164eef43e9eff18485a27b02acb84b816d25"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "57e02a68f2f793d568b58dd581ab164eef43e9eff18485a27b02acb84b816d25",
      "rows": [
        {
          "name": "Operating supply voltage",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.7,
          "typ": null,
          "max": 5.5,
          "conditions": "VDDIN and VDDANA at the same voltage",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature (U grade)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "Ordering code U = -40 - 85°C",
          "source_page": 19,
          "source": "datasheet"
        },
        {
          "name": "CPU clock frequency",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "MHz",
          "min": null,
          "typ": null,
          "max": 48,
          "conditions": "DC to 48 MHz",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "VDDCORE regulated output voltage",
          "symbol": "VDDCORE",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.2,
          "max": null,
          "conditions": "Internal regulated voltage output",
          "source_page": 40,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  "discovery_pitch": "ATSAMC21E18A-AUT (Microchip Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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