ATSAME51N20A-AUT

{
  "schema_version": 1,
  "type": "component",
  "slug": "atsame51n20a-aut",
  "title": "ATSAME51N20A-AUT",
  "brief": "Microchip Tech Pre-ordered MCUs, TQFP-100(14x14). 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",
    "atsame51n20a-aut",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ATSAME51N20A-AUT",
    "manufacturer": "Microchip Tech",
    "package": "TQFP-100(14x14)",
    "pin_count": 100,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Pre-ordered MCUs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/9793a584e47269a20b87364d41b6eaa9.pdf",
    "parts": {
      "symbol": "atsame51n20a-aut.kicad_sym",
      "footprint": "atsame51n20a-aut.kicad_mod",
      "model_3d": "atsame51n20a-aut-hero.glb",
      "model_3d_plain": "atsame51n20a-aut-etched.glb",
      "model_3d_step": "atsame51n20a-aut-etched.step",
      "model_3d_step_plain": "atsame51n20a-aut.step",
      "lbr": "atsame51n20a-aut.lbr"
    },
    "distributor_links": {
      "lcsc": "C1339620",
      "digikey": "ATSAME51N20A-AUTTR-ND",
      "mouser": "556-ATSAME51N20AAUT"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T16:26:04Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ATSAME51N20A-AUTTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "556-ATSAME51N20AAUT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PA00",
        "type": "bidirectional",
        "description": "General-purpose I/O PA00 with EIC EXTINT[0] and SERCOM1 PAD[0], shared with XIN32 of the XOSC32K 32.768 kHz crystal oscillator."
      },
      {
        "number": "2",
        "name": "PA01",
        "type": "bidirectional",
        "description": "General-purpose I/O PA01 with EIC EXTINT[1] and SERCOM1 PAD[1], shared with XOUT32 of the XOSC32K 32.768 kHz crystal oscillator."
      },
      {
        "number": "3",
        "name": "PC00",
        "type": "bidirectional",
        "description": "General-purpose I/O PC00 with EIC EXTINT[0] and ADC1 AIN[10]; it must stay static for XOSC32K crystal-mode behaviour and is also RTC tamper input IN3."
      },
      {
        "number": "4",
        "name": "PC01",
        "type": "bidirectional",
        "description": "General-purpose I/O PC01 with EIC EXTINT[1] and ADC1 AIN[11]; it must stay static for XOSC32K crystal-mode behaviour and is also RTC tamper input IN4."
      },
      {
        "number": "5",
        "name": "PC02",
        "type": "bidirectional",
        "description": "General-purpose I/O PC02 with EIC EXTINT[2] and ADC1 AIN[4]."
      },
      {
        "number": "6",
        "name": "PC03",
        "type": "bidirectional",
        "description": "General-purpose I/O PC03 with EIC EXTINT[3] and ADC1 AIN[5]."
      },
      {
        "number": "7",
        "name": "PA02",
        "type": "bidirectional",
        "description": "General-purpose I/O PA02 with EIC EXTINT[2], ADC0 AIN[0] and DAC VOUT[0]; it is also RTC tamper input IN2."
      },
      {
        "number": "8",
        "name": "PA03",
        "type": "bidirectional",
        "description": "General-purpose I/O PA03 with EIC EXTINT[3], ADC0 AIN[1], ANAREF VREFA and PTC X0/Y0."
      },
      {
        "number": "9",
        "name": "PB04",
        "type": "bidirectional",
        "description": "General-purpose I/O PB04 with EIC EXTINT[4], ADC1 AIN[6] and PTC X22/Y22."
      },
      {
        "number": "10",
        "name": "PB05",
        "type": "bidirectional",
        "description": "General-purpose I/O PB05 with EIC EXTINT[5], ADC1 AIN[7] and PTC X23/Y23."
      },
      {
        "number": "11",
        "name": "GNDANA",
        "type": "power_in",
        "description": "Analog ground for the ADC, DAC and analog comparator blocks."
      },
      {
        "number": "12",
        "name": "VDDANA",
        "type": "power_in",
        "description": "Analog supply for the analog peripherals; the device operating range is 1.71 V to 3.63 V."
      },
      {
        "number": "13",
        "name": "PB06",
        "type": "bidirectional",
        "description": "General-purpose I/O PB06 with EIC EXTINT[6], ADC1 AIN[8], PTC X24/Y24 and CCL IN[6]."
      },
      {
        "number": "14",
        "name": "PB07",
        "type": "bidirectional",
        "description": "General-purpose I/O PB07 with EIC EXTINT[7], ADC1 AIN[9], PTC X25/Y25 and CCL IN[7]."
      },
      {
        "number": "15",
        "name": "PB08",
        "type": "bidirectional",
        "description": "General-purpose I/O PB08 with EIC EXTINT[8], ADC0 AIN[2], ADC1 AIN[0], PTC X1/Y1, SERCOM4 PAD[0], TC4 WO[0] and CCL IN[8]."
      },
      {
        "number": "16",
        "name": "PB09",
        "type": "bidirectional",
        "description": "General-purpose I/O PB09 with EIC EXTINT[9], ADC0 AIN[3], ADC1 AIN[1], PTC X2/Y2, SERCOM4 PAD[1], TC4 WO[1] and CCL OUT[2]."
      },
      {
        "number": "17",
        "name": "PA04",
        "type": "bidirectional",
        "description": "General-purpose I/O PA04 with EIC EXTINT[4], ANAREF VREFB, ADC0 AIN[4], AC AIN[0], PTC X3/Y3, SERCOM0 PAD[0], TC0 WO[0] and CCL IN[0]."
      },
      {
        "number": "18",
        "name": "PA05",
        "type": "bidirectional",
        "description": "General-purpose I/O PA05 with EIC EXTINT[5], ADC0 AIN[5], AC AIN[1], DAC VOUT[1], SERCOM0 PAD[1], TC0 WO[1] and CCL IN[1]."
      },
      {
        "number": "19",
        "name": "PA06",
        "type": "bidirectional",
        "description": "General-purpose I/O PA06 with EIC EXTINT[6], ANAREF VREFC, ADC0 AIN[6], AC AIN[2], PTC X4/Y4, SERCOM0 PAD[2], TC1 WO[0] and CCL IN[2]."
      },
      {
        "number": "20",
        "name": "PA07",
        "type": "bidirectional",
        "description": "General-purpose I/O PA07 with EIC EXTINT[7], ADC0 AIN[7], AC AIN[3], PTC X5/Y5, SERCOM0 PAD[3], TC1 WO[1] and CCL OUT[0]."
      },
      {
        "number": "21",
        "name": "PC05",
        "type": "bidirectional",
        "description": "General-purpose I/O PC05 with EIC EXTINT[5] and SERCOM6 PAD[1]."
      },
      {
        "number": "22",
        "name": "PC06",
        "type": "bidirectional",
        "description": "General-purpose I/O PC06 with EIC EXTINT[6], SERCOM6 PAD[2] and SDHC0 SDCD."
      },
      {
        "number": "23",
        "name": "PC07",
        "type": "bidirectional",
        "description": "General-purpose I/O PC07 with EIC EXTINT[9], SERCOM6 PAD[3] and SDHC0 SDWP."
      },
      {
        "number": "24",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground reference."
      },
      {
        "number": "25",
        "name": "VDDIOB",
        "type": "power_in",
        "description": "I/O supply for the VDDIOB pin group, which includes the I2C-capable pins PA08 and PA09."
      },
      {
        "number": "26",
        "name": "PA08",
        "type": "bidirectional",
        "description": "High-sink I/O PA08 with EIC NMI, ADC0 AIN[8], ADC1 AIN[2], PTC X6/Y6, SERCOM0 PAD[0], SERCOM2 PAD[1], TC0 WO[0], TCC0 WO[0], TCC1 WO[4], QSPI DATA[0], SDHC0 SDCMD, I2S MCK[0] and CCL IN[3]."
      },
      {
        "number": "27",
        "name": "PA09",
        "type": "bidirectional",
        "description": "High-sink I/O PA09 with EIC EXTINT[9], ADC0 AIN[9], ADC1 AIN[3], PTC X7/Y7, SERCOM0 PAD[1], SERCOM2 PAD[0], TC0 WO[1], TCC0 WO[1], QSPI DATA[1], SDHC0 SDDAT[0], I2S FS[0] and CCL IN[4]."
      },
      {
        "number": "28",
        "name": "PA10",
        "type": "bidirectional",
        "description": "General-purpose I/O PA10 with EIC EXTINT[10], ADC0 AIN[10], PTC X8/Y8, SERCOM0 PAD[2], SERCOM2 PAD[2], TC1 WO[0], TCC0 WO[2], QSPI DATA[2], SDHC0 SDDAT[1], I2S SCK[0], GCLK IO[4] and CCL IN[5]."
      },
      {
        "number": "29",
        "name": "PA11",
        "type": "bidirectional",
        "description": "General-purpose I/O PA11 with EIC EXTINT[11], ADC0 AIN[11], PTC X9/Y9, SERCOM0 PAD[3], SERCOM2 PAD[3], TC1 WO[1], TCC0 WO[3], QSPI DATA[3], SDHC0 SDDAT[2], I2S SDO, GCLK IO[5] and CCL OUT[1]."
      },
      {
        "number": "30",
        "name": "VDDIOB",
        "type": "power_in",
        "description": "I/O supply for the VDDIOB pin group, which includes the I2C-capable pins PA08 and PA09."
      },
      {
        "number": "31",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground reference."
      },
      {
        "number": "32",
        "name": "PB10",
        "type": "bidirectional",
        "description": "General-purpose I/O PB10 with EIC EXTINT[10], SERCOM4 PAD[2], TC5 WO[0], TCC0 WO[4], TCC1 WO[0], QSPI SCK, SDHC0 SDDAT[3], I2S SDI, GCLK IO[4] and CCL IN[11]."
      },
      {
        "number": "33",
        "name": "PB11",
        "type": "bidirectional",
        "description": "General-purpose I/O PB11 with EIC EXTINT[11], SERCOM4 PAD[3], TC5 WO[1], TCC0 WO[5], TCC1 WO[1], QSPI CS, SDHC0 SDCK, I2S FS[1], GCLK IO[5] and CCL OUT[1]."
      },
      {
        "number": "34",
        "name": "PB12",
        "type": "bidirectional",
        "description": "General-purpose I/O PB12 with EIC EXTINT[12], PTC X26/Y26, SERCOM4 PAD[0], TC4 WO[0], TCC3 WO[0], TCC0 WO[0], CAN1 TX, SDHC0 SDCD, I2S SCK[1] and GCLK IO[6]."
      },
      {
        "number": "35",
        "name": "PB13",
        "type": "bidirectional",
        "description": "General-purpose I/O PB13 with EIC EXTINT[13], PTC X27/Y27, SERCOM4 PAD[1], TC4 WO[1], TCC3 WO[1], TCC0 WO[1], CAN1 RX, SDHC0 SDWP, I2S MCK[1] and GCLK IO[7]."
      },
      {
        "number": "36",
        "name": "PB14",
        "type": "bidirectional",
        "description": "General-purpose I/O PB14 with EIC EXTINT[14], PTC X28/Y28, SERCOM4 PAD[2], TC5 WO[0], TCC4 WO[0], TCC0 WO[2], CAN1 TX, PCC DATA[8], GMAC GMDC, GCLK IO[0] and CCL IN[9]."
      },
      {
        "number": "37",
        "name": "PB15",
        "type": "bidirectional",
        "description": "General-purpose I/O PB15 with EIC EXTINT[15], PTC X29/Y29, SERCOM4 PAD[3], TC5 WO[1], TCC4 WO[1], TCC0 WO[3], CAN1 RX, PCC DATA[9], GMAC GMDIO, GCLK IO[1] and CCL IN[10]."
      },
      {
        "number": "38",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground reference."
      },
      {
        "number": "39",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Digital I/O supply for its pin group; the device operating range is 1.71 V to 3.63 V."
      },
      {
        "number": "40",
        "name": "PC10",
        "type": "bidirectional",
        "description": "General-purpose I/O PC10 with EIC EXTINT[10], SERCOM6 PAD[2], SERCOM7 PAD[2], TCC0 WO[0] and TCC1 WO[4]."
      },
      {
        "number": "41",
        "name": "PC11",
        "type": "bidirectional",
        "description": "General-purpose I/O PC11 with EIC EXTINT[11], SERCOM6 PAD[3], SERCOM7 PAD[3], TCC0 WO[1], TCC1 WO[5] and GMAC GMDC."
      },
      {
        "number": "42",
        "name": "PC12",
        "type": "bidirectional",
        "description": "General-purpose I/O PC12 with selectable peripheral functions A to N through the PORT multiplexer."
      },
      {
        "number": "43",
        "name": "PC13",
        "type": "bidirectional",
        "description": "General-purpose I/O PC13 with selectable peripheral functions A to N through the PORT multiplexer."
      },
      {
        "number": "44",
        "name": "PC14",
        "type": "bidirectional",
        "description": "General-purpose I/O PC14 with selectable peripheral functions A to N through the PORT multiplexer."
      },
      {
        "number": "45",
        "name": "PC15",
        "type": "bidirectional",
        "description": "General-purpose I/O PC15 with selectable peripheral functions A to N through the PORT multiplexer."
      },
      {
        "number": "46",
        "name": "PA12",
        "type": "bidirectional",
        "description": "High-sink I/O PA12 that supports SERCOM I2C on the VDDIO group, with selectable peripheral functions A to N."
      },
      {
        "number": "47",
        "name": "PA13",
        "type": "bidirectional",
        "description": "High-sink I/O PA13 that supports SERCOM I2C on the VDDIO group, with selectable peripheral functions A to N."
      },
      {
        "number": "48",
        "name": "PA14",
        "type": "bidirectional",
        "description": "I/O PA14 that is the XIN pin of the XOSC0 main crystal oscillator, with selectable peripheral functions A to N."
      },
      {
        "number": "49",
        "name": "PA15",
        "type": "bidirectional",
        "description": "I/O PA15 that is the XOUT pin of the XOSC0 main crystal oscillator, with selectable peripheral functions A to N."
      },
      {
        "number": "50",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground reference."
      },
      {
        "number": "51",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Digital I/O supply for its pin group; the device operating range is 1.71 V to 3.63 V."
      },
      {
        "number": "52",
        "name": "PA16",
        "type": "bidirectional",
        "description": "High-sink I/O PA16 that supports SERCOM I2C on the VDDIO group, with selectable peripheral functions A to N."
      },
      {
        "number": "53",
        "name": "PA17",
        "type": "bidirectional",
        "description": "High-sink I/O PA17 that supports SERCOM I2C on the VDDIO group, with selectable peripheral functions A to N."
      },
      {
        "number": "54",
        "name": "PA18",
        "type": "bidirectional",
        "description": "General-purpose I/O PA18 with selectable peripheral functions A to N through the PORT multiplexer."
      },
      {
        "number": "55",
        "name": "PA19",
        "type": "bidirectional",
        "description": "General-purpose I/O PA19 with selectable peripheral functions A to N through the PORT multiplexer."
      },
      {
        "number": "56",
        "name": "PC16",
        "type": "bidirectional",
        "description": "General-purpose I/O PC16 with selectable peripheral functions A to N through the PORT multiplexer."
      },
      {
        "number": "57",
        "name": "PC17",
        "type": "bidirectional",
        "description": "General-purpose I/O PC17 with selectable peripheral functions A to N through the PORT multiplexer."
      },
      {
        "number": "58",
        "name": "PC18",
        "type": "bidirectional",
        "description": "General-purpose I/O PC18 with selectable peripheral functions A to N through the PORT multiplexer."
      },
      {
        "number": "59",
        "name": "PC19",
        "type": "bidirectional",
        "description": "General-purpose I/O PC19 with selectable peripheral functions A to N through the PORT multiplexer."
      },
      {
        "number": "60",
        "name": "PC20",
        "type": "bidirectional",
        "description": "General-purpose I/O PC20 with selectable peripheral functions A to N through the PORT multiplexer."
      },
      {
        "number": "61",
        "name": "PC21",
        "type": "bidirectional",
        "description": "General-purpose I/O PC21 with selectable peripheral functions A to N through the PORT multiplexer."
      },
      {
        "number": "62",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground reference."
      },
      {
        "number": "63",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Digital I/O supply for its pin group; the device operating range is 1.71 V to 3.63 V."
      },
      {
        "number": "64",
        "name": "PB16",
        "type": "bidirectional",
        "description": "General-purpose I/O PB16 with selectable peripheral functions A to N through the PORT multiplexer."
      },
      {
        "number": "65",
        "name": "PB17",
        "type": "bidirectional",
        "description": "General-purpose I/O PB17 with selectable peripheral functions A to N through the PORT multiplexer."
      },
      {
        "number": "66",
        "name": "PB18",
        "type": "bidirectional",
        "description": "General-purpose I/O PB18 with selectable peripheral functions A to N through the PORT multiplexer."
      },
      {
        "number": "67",
        "name": "PB19",
        "type": "bidirectional",
        "description": "General-purpose I/O PB19 with selectable peripheral functions A to N through the PORT multiplexer."
      },
      {
        "number": "68",
        "name": "PB20",
        "type": "bidirectional",
        "description": "General-purpose I/O PB20 with EIC EXTINT[4], SERCOM3 PAD[0], SERCOM7 PAD[1], TCC1 WO[2], PDEC PDEC[2], SDHC1 SDDAT[2] and GCLK IO[6]."
      },
      {
        "number": "69",
        "name": "PB21",
        "type": "bidirectional",
        "description": "General-purpose I/O PB21 with EIC EXTINT[5], SERCOM3 PAD[1], SERCOM7 PAD[0], TCC1 WO[3], SDHC1 SDDAT[3] and GCLK IO[7]."
      },
      {
        "number": "70",
        "name": "PA20",
        "type": "bidirectional",
        "description": "General-purpose I/O PA20 with EIC EXTINT[4], PTC X14/Y14, SERCOM5 PAD[2], SERCOM3 PAD[2], TC7 WO[0], TCC1 WO[4], TCC0 WO[0], SDHC1 SDCMD, I2S FS[0], PCC DATA[4] and GMAC GMDC."
      },
      {
        "number": "71",
        "name": "PA21",
        "type": "bidirectional",
        "description": "General-purpose I/O PA21 with EIC EXTINT[5], PTC X15/Y15, SERCOM5 PAD[3], SERCOM3 PAD[3], TC7 WO[1], TCC1 WO[5], TCC0 WO[1], SDHC1 SDCK, I2S SDO, PCC DATA[5] and GMAC GMDIO."
      },
      {
        "number": "72",
        "name": "PA22",
        "type": "bidirectional",
        "description": "High-sink I/O PA22 with EIC EXTINT[6], PTC X16/Y16, SERCOM3 PAD[0], SERCOM5 PAD[1], TC4 WO[0], TCC1 WO[6], TCC0 WO[2], CAN0 TX, I2S SDI, PCC DATA[6] and CCL IN[6]; it supports SERCOM I2C on VDDIO."
      },
      {
        "number": "73",
        "name": "PA23",
        "type": "bidirectional",
        "description": "High-sink I/O PA23 with EIC EXTINT[7], PTC X17/Y17, SERCOM3 PAD[1], SERCOM5 PAD[0], TC4 WO[1], TCC1 WO[7], TCC0 WO[3], USB SOF 1 kHz, CAN0 RX, I2S FS[1], PCC DATA[7] and CCL IN[7]; it supports SERCOM I2C on VDDIO."
      },
      {
        "number": "74",
        "name": "PA24",
        "type": "bidirectional",
        "description": "General-purpose I/O PA24 with EIC EXTINT[8], SERCOM3 PAD[2], SERCOM5 PAD[2], TC5 WO[0], TCC2 WO[2], PDEC PDEC[0], USB DM, CAN0 TX and CCL IN[8]."
      },
      {
        "number": "75",
        "name": "PA25",
        "type": "bidirectional",
        "description": "General-purpose I/O PA25 with EIC EXTINT[9], SERCOM3 PAD[3], SERCOM5 PAD[3], TC5 WO[1], PDEC PDEC[1], USB DP, CAN0 RX and CCL OUT[2]."
      },
      {
        "number": "76",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground reference."
      },
      {
        "number": "77",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Digital I/O supply for its pin group; the device operating range is 1.71 V to 3.63 V."
      },
      {
        "number": "78",
        "name": "PB22",
        "type": "bidirectional",
        "description": "General-purpose I/O PB22 with EIC EXTINT[6], SERCOM1 PAD[2], SERCOM5 PAD[2], TC7 WO[0], PDEC PDEC[2], USB SOF 1 kHz, GCLK IO[0] and CCL IN[0]; it is also XIN of XOSC1."
      },
      {
        "number": "79",
        "name": "PB23",
        "type": "bidirectional",
        "description": "General-purpose I/O PB23 with EIC EXTINT[7], SERCOM1 PAD[3], SERCOM5 PAD[3], TC7 WO[1], PDEC PDEC[0], GCLK IO[1] and CCL OUT[0]; it is also XOUT of XOSC1."
      },
      {
        "number": "80",
        "name": "PB24",
        "type": "bidirectional",
        "description": "General-purpose I/O PB24 with EIC EXTINT[8], SERCOM0 PAD[0], SERCOM2 PAD[1], PDEC PDEC[1] and AC CMP[0]."
      },
      {
        "number": "81",
        "name": "PB25",
        "type": "bidirectional",
        "description": "General-purpose I/O PB25 with EIC EXTINT[9], SERCOM0 PAD[1], SERCOM2 PAD[0], PDEC PDEC[2] and AC CMP[1]."
      },
      {
        "number": "82",
        "name": "PC24",
        "type": "bidirectional",
        "description": "General-purpose I/O PC24 with EIC EXTINT[8], SERCOM0 PAD[2], SERCOM2 PAD[2] and trace output TRACEDATA[3]."
      },
      {
        "number": "83",
        "name": "PC25",
        "type": "bidirectional",
        "description": "General-purpose I/O PC25 with EIC EXTINT[9], SERCOM0 PAD[3], SERCOM2 PAD[3] and trace output TRACEDATA[2]."
      },
      {
        "number": "84",
        "name": "PC26",
        "type": "bidirectional",
        "description": "General-purpose I/O PC26 with EIC EXTINT[10] and trace output TRACEDATA[1]."
      },
      {
        "number": "85",
        "name": "PC27",
        "type": "bidirectional",
        "description": "General-purpose I/O PC27 with EIC EXTINT[11], SERCOM1 PAD[0], trace clock TRACECLK and CCL IN[4]; it takes the SWO role when trace is used in single-wire debug mode."
      },
      {
        "number": "86",
        "name": "PC28",
        "type": "bidirectional",
        "description": "General-purpose I/O PC28 with EIC EXTINT[12], SERCOM1 PAD[1], trace output TRACEDATA[0] and CCL IN[5]."
      },
      {
        "number": "87",
        "name": "PA27",
        "type": "bidirectional",
        "description": "General-purpose I/O PA27 with EIC EXTINT[11], PTC X18/Y18 and GCLK IO[1]."
      },
      {
        "number": "88",
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        "type": "input",
        "description": "Active-low external reset input."
      },
      {
        "number": "89",
        "name": "VDDCORE",
        "type": "power_in",
        "description": "Core voltage pin for the device's internal logic."
      },
      {
        "number": "90",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground reference."
      },
      {
        "number": "91",
        "name": "VSW",
        "type": "power_out",
        "description": "Switching-node pin associated with the embedded Buck/LDO regulator; its external connection is not described in the provided text."
      },
      {
        "number": "92",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Digital I/O supply for its pin group; the device operating range is 1.71 V to 3.63 V."
      },
      {
        "number": "93",
        "name": "PA30",
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      },
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        "number": "94",
        "name": "PA31",
        "type": "bidirectional",
        "description": "I/O PA31 that is the SWDIO Serial Wire Debug data pin, also with EIC EXTINT[15], SERCOM1/SERCOM7 PAD[3], TC6 WO[1], TCC2 WO[1] and CCL OUT[1]."
      },
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      },
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