ATSAME51N20A-AU

{
  "slug": "atsame51n20a-au",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), TQFP-100(14x14). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "single chip microcomputer-microcontroller",
    "atsame51n20a-au",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "atsame51n20a-au.kicad_sym",
    "atsame51n20a-au.kicad_mod",
    "atsame51n20a-au.glb",
    "atsame51n20a-au.step",
    "atsame51n20a-au.lbr",
    "docs/hero.png",
    "docs/atsame51n20a-au-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "atsame51n20a-au-hero.glb",
    "atsame51n20a-au-hero.overlay.json",
    "atsame51n20a-au-etched.glb"
  ],
  "component": {
    "mpn": "ATSAME51N20A-AU",
    "manufacturer": "Microchip Tech",
    "package": "TQFP-100(14x14)",
    "pin_count": 100,
    "category": "Single Chip Microcomputer/Microcontroller",
    "subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/9793a584e47269a20b87364d41b6eaa9.pdf",
    "parts": {
      "symbol": "atsame51n20a-au.kicad_sym",
      "footprint": "atsame51n20a-au.kicad_mod",
      "model_3d": "atsame51n20a-au-hero.glb",
      "model_3d_plain": "atsame51n20a-au-etched.glb",
      "model_3d_step": "atsame51n20a-au-etched.step",
      "model_3d_step_plain": "atsame51n20a-au.step",
      "lbr": "atsame51n20a-au.lbr"
    },
    "distributor_links": {
      "lcsc": "C618620",
      "digikey": "ATSAME51N20A-AU-ND",
      "mouser": "556-ATSAME51N20AAU"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T16:08:50Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ATSAME51N20A-AU-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "556-ATSAME51N20AAU",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PA00",
        "type": "bidirectional",
        "description": "PORT pin PA00 with EIC EXTINT[0], SERCOM1 PAD[0] and XIN32 for the 32.768 kHz crystal oscillator (XOSC32K)."
      },
      {
        "number": "2",
        "name": "PA01",
        "type": "bidirectional",
        "description": "PORT pin PA01 with EIC EXTINT[1], SERCOM1 PAD[1] and XOUT32 for the 32.768 kHz crystal oscillator (XOSC32K)."
      },
      {
        "number": "3",
        "name": "PC00",
        "type": "bidirectional",
        "description": "PORT pin PC00 with EIC EXTINT[0] and ADC1 AIN[10]; it must stay static for XOSC32K crystal-mode behavior."
      },
      {
        "number": "4",
        "name": "PC01",
        "type": "bidirectional",
        "description": "PORT pin PC01 with EIC EXTINT[1] and ADC1 AIN[11]; it must stay static for XOSC32K crystal-mode behavior."
      },
      {
        "number": "5",
        "name": "PC02",
        "type": "bidirectional",
        "description": "PORT pin PC02 with EIC EXTINT[2] and ADC1 AIN[4]."
      },
      {
        "number": "6",
        "name": "PC03",
        "type": "bidirectional",
        "description": "PORT pin PC03 with EIC EXTINT[3] and ADC1 AIN[5]."
      },
      {
        "number": "7",
        "name": "PA02",
        "type": "bidirectional",
        "description": "PORT pin PA02 with EIC EXTINT[2], ADC0 AIN[0] and DAC VOUT[0] output."
      },
      {
        "number": "8",
        "name": "PA03",
        "type": "bidirectional",
        "description": "PORT pin PA03 with EIC EXTINT[3], ADC0 AIN[1], ADC voltage reference VREFA and PTC X0/Y0."
      },
      {
        "number": "9",
        "name": "PB04",
        "type": "bidirectional",
        "description": "PORT pin PB04 with EIC EXTINT[4], ADC1 AIN[6] and PTC X22/Y22."
      },
      {
        "number": "10",
        "name": "PB05",
        "type": "bidirectional",
        "description": "PORT pin PB05 with EIC EXTINT[5], ADC1 AIN[7] and PTC X23/Y23."
      },
      {
        "number": "11",
        "name": "GNDANA",
        "type": "power_in",
        "description": "Ground reference for the analog circuitry (ADC, DAC, AC, PTC)."
      },
      {
        "number": "12",
        "name": "VDDANA",
        "type": "power_in",
        "description": "Analog supply for the ADC, DAC and analog comparators, within the 1.71V to 3.63V device operating range."
      },
      {
        "number": "13",
        "name": "PB06",
        "type": "bidirectional",
        "description": "PORT pin PB06 with EIC EXTINT[6], ADC1 AIN[8], PTC X24/Y24 and CCL IN[6]."
      },
      {
        "number": "14",
        "name": "PB07",
        "type": "bidirectional",
        "description": "PORT pin PB07 with EIC EXTINT[7], ADC1 AIN[9], PTC X25/Y25 and CCL IN[7]."
      },
      {
        "number": "15",
        "name": "PB08",
        "type": "bidirectional",
        "description": "PORT pin PB08 with EIC EXTINT[8], ADC0 AIN[2], ADC1 AIN[0], SERCOM4 PAD[0] and CCL IN[8]."
      },
      {
        "number": "16",
        "name": "PB09",
        "type": "bidirectional",
        "description": "PORT pin PB09 with EIC EXTINT[9], ADC0 AIN[3], ADC1 AIN[1], SERCOM4 PAD[1] and CCL OUT[2]."
      },
      {
        "number": "17",
        "name": "PA04",
        "type": "bidirectional",
        "description": "PORT pin PA04 with EIC EXTINT[4], ADC0 AIN[4], ADC voltage reference VREFB, AC AIN[0] and SERCOM0 PAD[0]."
      },
      {
        "number": "18",
        "name": "PA05",
        "type": "bidirectional",
        "description": "PORT pin PA05 with EIC EXTINT[5], ADC0 AIN[5], AC AIN[1], DAC VOUT[1] and SERCOM0 PAD[1]."
      },
      {
        "number": "19",
        "name": "PA06",
        "type": "bidirectional",
        "description": "PORT pin PA06 with EIC EXTINT[6], ADC0 AIN[6], ADC voltage reference VREFC, AC AIN[2] and SERCOM0 PAD[2]."
      },
      {
        "number": "20",
        "name": "PA07",
        "type": "bidirectional",
        "description": "PORT pin PA07 with EIC EXTINT[7], ADC0 AIN[7], AC AIN[3], SERCOM0 PAD[3] and SDHC0 SDWP."
      },
      {
        "number": "21",
        "name": "PC05",
        "type": "bidirectional",
        "description": "PORT pin PC05 with EIC EXTINT[5] and SERCOM6 PAD[1]."
      },
      {
        "number": "22",
        "name": "PC06",
        "type": "bidirectional",
        "description": "PORT pin PC06 with EIC EXTINT[6], SERCOM6 PAD[2] and SDHC0 SDCD."
      },
      {
        "number": "23",
        "name": "PC07",
        "type": "bidirectional",
        "description": "PORT pin PC07 with EIC EXTINT[9], SERCOM6 PAD[3] and SDHC0 SDWP."
      },
      {
        "number": "24",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground for the device."
      },
      {
        "number": "25",
        "name": "VDDIOB",
        "type": "power_in",
        "description": "I/O supply for the PA08, PA09, PB10 to PB15 and PC pin clusters, within the 1.71V to 3.63V device operating range."
      },
      {
        "number": "26",
        "name": "PA08",
        "type": "bidirectional",
        "description": "High-sink PORT pin PA08 with EIC NMI, ADC0 AIN[8], ADC1 AIN[2], SERCOM0 PAD[0], SERCOM2 PAD[1], TCC0 WO[0] and I2C support."
      },
      {
        "number": "27",
        "name": "PA09",
        "type": "bidirectional",
        "description": "High-sink PORT pin PA09 with EIC EXTINT[9], ADC0 AIN[9], ADC1 AIN[3], SERCOM0 PAD[1] and I2C support."
      },
      {
        "number": "28",
        "name": "PA10",
        "type": "bidirectional",
        "description": "PORT pin PA10 with EIC EXTINT[10], ADC0 AIN[10], SERCOM0 PAD[2], SERCOM2 PAD[2] and TCC0 WO[2]."
      },
      {
        "number": "29",
        "name": "PA11",
        "type": "bidirectional",
        "description": "PORT pin PA11 with EIC EXTINT[11], ADC0 AIN[11], SERCOM0 PAD[3] and SERCOM2 PAD[3]."
      },
      {
        "number": "30",
        "name": "VDDIOB",
        "type": "power_in",
        "description": "I/O supply for the PB10 to PB15 and PA08 to PA11 pin cluster, within the 1.71V to 3.63V device operating range."
      },
      {
        "number": "31",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground for the device."
      },
      {
        "number": "32",
        "name": "PB10",
        "type": "bidirectional",
        "description": "PORT pin PB10 with EIC EXTINT[10], SERCOM4 PAD[2], TC5 WO[0] and QSPI SCK."
      },
      {
        "number": "33",
        "name": "PB11",
        "type": "bidirectional",
        "description": "PORT pin PB11 with EIC EXTINT[11], SERCOM4 PAD[3], TC5 WO[1] and QSPI CS."
      },
      {
        "number": "34",
        "name": "PB12",
        "type": "bidirectional",
        "description": "PORT pin PB12 with EIC EXTINT[12], PTC X26/Y26, SERCOM4 PAD[0] and CAN1 TX."
      },
      {
        "number": "35",
        "name": "PB13",
        "type": "bidirectional",
        "description": "PORT pin PB13 with EIC EXTINT[13], PTC X27/Y27, SERCOM4 PAD[1] and CAN1 RX."
      },
      {
        "number": "36",
        "name": "PB14",
        "type": "bidirectional",
        "description": "PORT pin PB14 with EIC EXTINT[14], PTC X28/Y28, SERCOM4 PAD[2] and CAN1 TX."
      },
      {
        "number": "37",
        "name": "PB15",
        "type": "bidirectional",
        "description": "PORT pin PB15 with EIC EXTINT[15], PTC X29/Y29, SERCOM4 PAD[3] and CAN1 RX."
      },
      {
        "number": "38",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground for the device."
      },
      {
        "number": "39",
        "name": "VDDIO",
        "type": "power_in",
        "description": "I/O supply for the PC10 to PC15 and PA12 to PA15 pin cluster, within the 1.71V to 3.63V device operating range."
      },
      {
        "number": "40",
        "name": "PC10",
        "type": "bidirectional",
        "description": "PORT pin PC10 with EIC EXTINT[10], SERCOM6 PAD[2], SERCOM7 PAD[2] and TCC0 WO[0]."
      },
      {
        "number": "41",
        "name": "PC11",
        "type": "bidirectional",
        "description": "PORT pin PC11 with EIC EXTINT[11], SERCOM6 PAD[3], SERCOM7 PAD[3] and TCC0 WO[1]."
      },
      {
        "number": "42",
        "name": "PC12",
        "type": "bidirectional",
        "description": "General-purpose PORT pin PC12; its alternate peripheral functions are listed on page 34, which is not in the supplied text."
      },
      {
        "number": "43",
        "name": "PC13",
        "type": "bidirectional",
        "description": "General-purpose PORT pin PC13; its alternate peripheral functions are listed on page 34, which is not in the supplied text."
      },
      {
        "number": "44",
        "name": "PC14",
        "type": "bidirectional",
        "description": "General-purpose PORT pin PC14; its alternate peripheral functions are listed on page 34, which is not in the supplied text."
      },
      {
        "number": "45",
        "name": "PC15",
        "type": "bidirectional",
        "description": "General-purpose PORT pin PC15; its alternate peripheral functions are listed on page 34, which is not in the supplied text."
      },
      {
        "number": "46",
        "name": "PA12",
        "type": "bidirectional",
        "description": "High-sink PORT pin PA12; its alternate peripheral functions are listed on page 34, which is not in the supplied text, and it supports I2C."
      },
      {
        "number": "47",
        "name": "PA13",
        "type": "bidirectional",
        "description": "High-sink PORT pin PA13; its alternate peripheral functions are listed on page 34, which is not in the supplied text, and it supports I2C."
      },
      {
        "number": "48",
        "name": "PA14",
        "type": "bidirectional",
        "description": "PORT pin PA14; its alternate peripheral functions are listed on page 34, which is not in the supplied text. It is also XIN of XOSC0."
      },
      {
        "number": "49",
        "name": "PA15",
        "type": "bidirectional",
        "description": "PORT pin PA15; its alternate peripheral functions are listed on page 34, which is not in the supplied text. It is also XOUT of XOSC0."
      },
      {
        "number": "50",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground for the device."
      },
      {
        "number": "51",
        "name": "VDDIO",
        "type": "power_in",
        "description": "I/O supply for the PA16 to PA19 and PC16 to PC21 pin cluster, within the 1.71V to 3.63V device operating range."
      },
      {
        "number": "52",
        "name": "PA16",
        "type": "bidirectional",
        "description": "High-sink PORT pin PA16; its alternate peripheral functions are listed on page 34, which is not in the supplied text, and it supports I2C."
      },
      {
        "number": "53",
        "name": "PA17",
        "type": "bidirectional",
        "description": "High-sink PORT pin PA17; its alternate peripheral functions are listed on page 34, which is not in the supplied text, and it supports I2C."
      },
      {
        "number": "54",
        "name": "PA18",
        "type": "bidirectional",
        "description": "PORT pin PA18; its alternate peripheral functions are listed on page 34, which is not in the supplied text."
      },
      {
        "number": "55",
        "name": "PA19",
        "type": "bidirectional",
        "description": "PORT pin PA19; its alternate peripheral functions are listed on page 34, which is not in the supplied text."
      },
      {
        "number": "56",
        "name": "PC16",
        "type": "bidirectional",
        "description": "General-purpose PORT pin PC16; its alternate peripheral functions are listed on page 34, which is not in the supplied text."
      },
      {
        "number": "57",
        "name": "PC17",
        "type": "bidirectional",
        "description": "General-purpose PORT pin PC17; its alternate peripheral functions are listed on page 34, which is not in the supplied text."
      },
      {
        "number": "58",
        "name": "PC18",
        "type": "bidirectional",
        "description": "General-purpose PORT pin PC18; its alternate peripheral functions are listed on page 34, which is not in the supplied text."
      },
      {
        "number": "59",
        "name": "PC19",
        "type": "bidirectional",
        "description": "General-purpose PORT pin PC19; its alternate peripheral functions are listed on page 34, which is not in the supplied text."
      },
      {
        "number": "60",
        "name": "PC20",
        "type": "bidirectional",
        "description": "General-purpose PORT pin PC20; its alternate peripheral functions are listed on page 34, which is not in the supplied text."
      },
      {
        "number": "61",
        "name": "PC21",
        "type": "bidirectional",
        "description": "General-purpose PORT pin PC21; its alternate peripheral functions are listed on page 34, which is not in the supplied text."
      },
      {
        "number": "62",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground for the device."
      },
      {
        "number": "63",
        "name": "VDDIO",
        "type": "power_in",
        "description": "I/O supply for the PB16 to PB21 and PA20 to PA25 pin cluster, within the 1.71V to 3.63V device operating range."
      },
      {
        "number": "64",
        "name": "PB16",
        "type": "bidirectional",
        "description": "General-purpose PORT pin PB16; its alternate peripheral functions are listed on page 34, which is not in the supplied text."
      },
      {
        "number": "65",
        "name": "PB17",
        "type": "bidirectional",
        "description": "General-purpose PORT pin PB17; its alternate peripheral functions are listed on page 34, which is not in the supplied text."
      },
      {
        "number": "66",
        "name": "PB18",
        "type": "bidirectional",
        "description": "General-purpose PORT pin PB18; its alternate peripheral functions are listed on page 34, which is not in the supplied text."
      },
      {
        "number": "67",
        "name": "PB19",
        "type": "bidirectional",
        "description": "General-purpose PORT pin PB19; its alternate peripheral functions are listed on page 34, which is not in the supplied text."
      },
      {
        "number": "68",
        "name": "PB20",
        "type": "bidirectional",
        "description": "PORT pin PB20 with EIC EXTINT[4], SERCOM3 PAD[0], SERCOM7 PAD[1], TCC1 WO[2], PDEC PDEC[2] and GCLK IO[6]."
      },
      {
        "number": "69",
        "name": "PB21",
        "type": "bidirectional",
        "description": "PORT pin PB21 with EIC EXTINT[5], SERCOM3 PAD[1], SERCOM7 PAD[0], TCC1 WO[3] and GCLK IO[7]."
      },
      {
        "number": "70",
        "name": "PA20",
        "type": "bidirectional",
        "description": "PORT pin PA20 with EIC EXTINT[4], PTC X14/Y14, SERCOM5 PAD[2], SERCOM3 PAD[2], TCC0 WO[0] and I2S FS[0]."
      },
      {
        "number": "71",
        "name": "PA21",
        "type": "bidirectional",
        "description": "PORT pin PA21 with EIC EXTINT[5], PTC X15/Y15, SERCOM5 PAD[3], SERCOM3 PAD[3], TCC0 WO[1] and I2S SDO."
      },
      {
        "number": "72",
        "name": "PA22",
        "type": "bidirectional",
        "description": "High-sink PORT pin PA22 with EIC EXTINT[6], PTC X16/Y16, SERCOM3 PAD[0], SERCOM5 PAD[1], TCC0 WO[2], CAN0 TX and I2S SDI."
      },
      {
        "number": "73",
        "name": "PA23",
        "type": "bidirectional",
        "description": "High-sink PORT pin PA23 with EIC EXTINT[7], PTC X17/Y17, SERCOM3 PAD[1], SERCOM5 PAD[0], TCC0 WO[3], CAN0 RX and I2S FS[1]."
      },
      {
        "number": "74",
        "name": "PA24",
        "type": "bidirectional",
        "description": "PORT pin PA24 with EIC EXTINT[8], SERCOM3 PAD[2], SERCOM5 PAD[2], TCC2 WO[2], USB DM and CAN0 TX."
      },
      {
        "number": "75",
        "name": "PA25",
        "type": "bidirectional",
        "description": "PORT pin PA25 with EIC EXTINT[9], SERCOM3 PAD[3], SERCOM5 PAD[3], PDEC PDEC[1], USB DP and CAN0 RX."
      },
      {
        "number": "76",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground for the device."
      },
      {
        "number": "77",
        "name": "VDDIO",
        "type": "power_in",
        "description": "I/O supply for the PB22 to PB25 and PC24 to PC28 pin cluster, within the 1.71V to 3.63V device operating range."
      },
      {
        "number": "78",
        "name": "PB22",
        "type": "bidirectional",
        "description": "PORT pin PB22 with EIC EXTINT[6], SERCOM1 PAD[2], SERCOM5 PAD[2], TC7 WO[0], USB SOF 1KHz and XIN of XOSC1."
      },
      {
        "number": "79",
        "name": "PB23",
        "type": "bidirectional",
        "description": "PORT pin PB23 with EIC EXTINT[7], SERCOM1 PAD[3], SERCOM5 PAD[3], TC7 WO[1] and XOUT of XOSC1."
      },
      {
        "number": "80",
        "name": "PB24",
        "type": "bidirectional",
        "description": "PORT pin 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": "PORT pin 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": "PORT pin PC24 with EIC EXTINT[8], SERCOM0 PAD[2], SERCOM2 PAD[2] and TRACE DATA[3]."
      },
      {
        "number": "83",
        "name": "PC25",
        "type": "bidirectional",
        "description": "PORT pin PC25 with EIC EXTINT[9], SERCOM0 PAD[3], SERCOM2 PAD[3] and TRACE DATA[2]."
      },
      {
        "number": "84",
        "name": "PC26",
        "type": "bidirectional",
        "description": "PORT pin PC26 with EIC EXTINT[10] and TRACE DATA[1]."
      },
      {
        "number": "85",
        "name": "PC27",
        "type": "bidirectional",
        "description": "PORT pin PC27 with EIC EXTINT[11], SERCOM1 PAD[0], TRACE CLK, CCL IN[4], and acts as SWO in single-wire trace mode."
      },
      {
        "number": "86",
        "name": "PC28",
        "type": "bidirectional",
        "description": "PORT pin PC28 with EIC EXTINT[12], SERCOM1 PAD[1], TRACE DATA[0] and CCL IN[5]."
      },
      {
        "number": "87",
        "name": "PA27",
        "type": "bidirectional",
        "description": "PORT pin PA27 with EIC EXTINT[11], PTC X18/Y18 and GCLK IO[1]."
      },
      {
        "number": "88",
        "name": "RESETN",
        "type": "input",
        "description": "External active-low reset input for the device."
      },
      {
        "number": "89",
        "name": "VDDCORE",
        "type": "power_in",
        "description": "Core supply pin for the device, within the 1.71V to 3.63V device operating range."
      },
      {
        "number": "90",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground for the device."
      },
      {
        "number": "91",
        "name": "VSW",
        "type": "power_out",
        "description": "Switching node of the embedded buck regulator."
      },
      {
        "number": "92",
        "name": "VDDIO",
        "type": "power_in",
        "description": "I/O supply for the PA30 and PA31 pin cluster, within the 1.71V to 3.63V device operating range."
      },
      {
        "number": "93",
        "name": "PA30",
        "type": "bidirectional",
        "description": "PORT pin PA30 with EIC EXTINT[14], SERCOM1 PAD[2], SERCOM7 PAD[2], TC6 WO[0], TCC2 WO[0], SWCLK and CCL IN[3]."
      },
      {
        "number": "94",
        "name": "PA31",
        "type": "bidirectional",
        "description": "PORT pin PA31 with EIC EXTINT[15], SERCOM1 PAD[3], SERCOM7 PAD[3], TC6 WO[1], TCC2 WO[1] and SWDIO."
      },
      {
        "number": "95",
        "name": "PB30",
        "type": "bidirectional",
        "description": "PORT pin PB30 with EIC EXTINT[14], SERCOM7 PAD[0], SERCOM5 PAD[1], TC0 WO[0], TCC4 WO[0] and SWO (in non-single-wire trace modes)."
      },
      {
        "number": "96",
        "name": "PB31",
        "type": "bidirectional",
        "description": "PORT pin PB31 with EIC EXTINT[15], SERCOM7 PAD[1], SERCOM5 PAD[0], TC0 WO[1], TCC4 WO[1] and TCC0 WO[7]."
      },
      {
        "number": "97",
        "name": "PB00",
        "type": "bidirectional",
        "description": "PORT pin PB00 with EIC EXTINT[0], ADC0 AIN[12], PTC X30/Y30, SERCOM5 PAD[2], TC7 WO[0] and CCL IN[1]."
      },
      {
        "number": "98",
        "name": "PB01",
        "type": "bidirectional",
        "description": "PORT pin PB01 with EIC EXTINT[1], ADC0 AIN[13], PTC X31/Y31, SERCOM5 PAD[3], TC7 WO[1] and CCL IN[2]."
      },
      {
        "number": "99",
        "name": "PB02",
        "type": "bidirectional",
        "description": "PORT pin PB02 with EIC EXTINT[2], ADC0 AIN[14], PTC X20/Y20, SERCOM5 PAD[0], TC6 WO[0], TCC2 WO[2] and CCL OUT[0]."
      },
      {
        "number": "100",
        "name": "PB03",
        "type": "bidirectional",
        "description": "PORT pin PB03 with EIC EXTINT[3], PTC X21/Y21, SERCOM5 PAD[1] and TC6 WO[1]."
      }
    ],
    "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: Package mapping: MPN ATSAME51N20A-AU is the 100-pin TQFP variant (N = 100 pins, A = TQFP, 14x14x1.2 ; Pins 42-45, 46-49, 52-55, 56-61 and 64-67 are not described with their alternate functions because t; Supply voltage limits for each supply pin are not stated per pin in the supplied text; the only stat"
        ],
        "pages_sent": 107,
        "cost_usd": 0.1724,
        "at": "2026-10-28T16:08:09"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/9793a584e47269a20b87364d41b6eaa9.pdf",
        "pages": 1934,
        "sha256": "6f02ccc3e69325ab",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 100,
        "described": 100,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "atsame51n20a-au.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          16.0,
          16.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "99d530be126138ea024746562f1110203db0273456e99932e7e1930dc9f5fba5",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "atsame51n20a-au-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          16.0,
          16.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "e67c2af5b8156593b8c305549518c2813bba7f5bd0e54ac8e93f3819a0e84060",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}