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ATSAME54P20A-AU
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Microchip Tech Pre-ordered MCUs, TQFP-128(14x14). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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"component": {
"mpn": "ATSAME54P20A-AU",
"manufacturer": "Microchip Tech",
"package": "TQFP-128(14x14)",
"pin_count": 128,
"category": "Embedded Processors & Controllers",
"subcategory": "Pre-ordered MCUs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/9793a584e47269a20b87364d41b6eaa9.pdf",
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"distributor_links": {
"lcsc": "C1337125",
"digikey": "ATSAME54P20A-AU-ND",
"mouser": "556-ATSAME54P20AAU"
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"checked_at": "2026-10-30T18:38:00Z",
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"pins": [
{
"number": "1",
"name": "PA00",
"type": "bidirectional",
"description": "PORT pin PA00 with EIC/EXTINT[0] and SERCOM1/PAD[0] functions, and XIN32 of the 32 kHz crystal oscillator (XOSC32K) per Table 6-2."
},
{
"number": "2",
"name": "PA01",
"type": "bidirectional",
"description": "PORT pin PA01 with EIC/EXTINT[1] function, and XOUT32 of the 32 kHz crystal oscillator (XOSC32K) per Table 6-2."
},
{
"number": "3",
"name": "PC00",
"type": "bidirectional",
"description": "PORT pin PC00 with EIC/EXTINT[0] and ADC1/AIN[10]; it must be static to guarantee XOSC32K crystal-mode behavior (Section 6.2.1)."
},
{
"number": "4",
"name": "PC01",
"type": "bidirectional",
"description": "PORT pin PC01 with EIC/EXTINT[1] and ADC1/AIN[11]; listed as a steady signal for XOSC32K jitter minimization (Table 6-3)."
},
{
"number": "5",
"name": "GND",
"type": "power_in",
"description": "Ground pin of the device."
},
{
"number": "6",
"name": "VDDANA",
"type": "power_in",
"description": "Analog supply pin; device operating range is 1.71 V to 3.63 V."
},
{
"number": "7",
"name": "PC02",
"type": "bidirectional",
"description": "PORT pin PC02 with EIC/EXTINT[2] and ADC1/AIN[4] functions."
},
{
"number": "8",
"name": "PC03",
"type": "bidirectional",
"description": "PORT pin PC03 with EIC/EXTINT[3] and ADC1/AIN[5] functions."
},
{
"number": "9",
"name": "PA02",
"type": "bidirectional",
"description": "PORT pin PA02 with EIC/EXTINT[2], ADC0/AIN[0] and DAC/VOUT[0] functions; also RTC tamper input IN2 (Table 6-7)."
},
{
"number": "10",
"name": "PA03",
"type": "bidirectional",
"description": "PORT pin PA03 with EIC/EXTINT[3], ADC0/AIN[1], PTC X0/Y0 and ANAREF/VREFA external reference functions."
},
{
"number": "11",
"name": "PB04",
"type": "bidirectional",
"description": "PORT pin PB04 with EIC/EXTINT[4], ADC1/AIN[6] and PTC X22/Y22 functions."
},
{
"number": "12",
"name": "PB05",
"type": "bidirectional",
"description": "PORT pin PB05 with EIC/EXTINT[5], ADC1/AIN[7] and PTC X23/Y23 functions."
},
{
"number": "13",
"name": "PD00",
"type": "bidirectional",
"description": "PORT pin PD00 with EIC/EXTINT[0] and ADC1/AIN[14] functions."
},
{
"number": "14",
"name": "GNDANA",
"type": "power_in",
"description": "Analog ground pin for the analog peripherals."
},
{
"number": "15",
"name": "VDDANA",
"type": "power_in",
"description": "Analog supply pin; device operating range is 1.71 V to 3.63 V."
},
{
"number": "16",
"name": "PD01",
"type": "bidirectional",
"description": "PORT pin PD01 with EIC/EXTINT[1] and ADC1/AIN[15] functions."
},
{
"number": "17",
"name": "PB06",
"type": "bidirectional",
"description": "PORT pin PB06 with EIC/EXTINT[6], ADC1/AIN[8], PTC X24/Y24 and CCL/IN[6] functions."
},
{
"number": "18",
"name": "PB07",
"type": "bidirectional",
"description": "PORT pin PB07 with EIC/EXTINT[7], ADC1/AIN[9], PTC X25/Y25 and CCL/IN[7] functions."
},
{
"number": "19",
"name": "PB08",
"type": "bidirectional",
"description": "PORT pin PB08 with EIC/EXTINT[8], ADC0/AIN[2], ADC1/AIN[0] and PTC X1/Y1 functions."
},
{
"number": "20",
"name": "PB09",
"type": "bidirectional",
"description": "PORT pin PB09 with EIC/EXTINT[9], ADC0/AIN[3], ADC1/AIN[1] and PTC X2/Y2 functions."
},
{
"number": "21",
"name": "PA04",
"type": "bidirectional",
"description": "PORT pin PA04 with EIC/EXTINT[4], ADC0/AIN[4], AC/AIN[0] and ANAREF/VREFB functions."
},
{
"number": "22",
"name": "PA05",
"type": "bidirectional",
"description": "PORT pin PA05 with EIC/EXTINT[5], ADC0/AIN[5], AC/AIN[1] and DAC/VOUT[1] functions."
},
{
"number": "23",
"name": "PA06",
"type": "bidirectional",
"description": "PORT pin PA06 with EIC/EXTINT[6], ADC0/AIN[6], AC/AIN[2] and ANAREF/VREFC functions."
},
{
"number": "24",
"name": "PA07",
"type": "bidirectional",
"description": "PORT pin PA07 with EIC/EXTINT[7], ADC0/AIN[7] and AC/AIN[3] functions."
},
{
"number": "25",
"name": "GNDANA",
"type": "power_in",
"description": "Analog ground pin for the analog peripherals."
},
{
"number": "26",
"name": "VDDANA",
"type": "power_in",
"description": "Analog supply pin; device operating range is 1.71 V to 3.63 V."
},
{
"number": "27",
"name": "PC04",
"type": "bidirectional",
"description": "PORT pin PC04 with EIC/EXTINT[4] function and SERCOM6/PAD[0] and TCC0/WO[0] alternate functions."
},
{
"number": "28",
"name": "PC05",
"type": "bidirectional",
"description": "PORT pin PC05 with EIC/EXTINT[5] function and SERCOM6/PAD[1] alternate function."
},
{
"number": "29",
"name": "PC06",
"type": "bidirectional",
"description": "PORT pin PC06 with EIC/EXTINT[6] function and SERCOM6/PAD[2] and SDHC0/SDCD alternate functions."
},
{
"number": "30",
"name": "PC07",
"type": "bidirectional",
"description": "PORT pin PC07 with EIC/EXTINT[9] function and SERCOM6/PAD[3] and SDHC0/SDWP alternate functions."
},
{
"number": "31",
"name": "GND",
"type": "power_in",
"description": "Ground pin of the device."
},
{
"number": "32",
"name": "VDDIOB",
"type": "power_in",
"description": "I/O supply pin for the VDDIOB pin group; device operating range is 1.71 V to 3.63 V."
},
{
"number": "33",
"name": "PA08",
"type": "bidirectional",
"description": "High Sink PORT pin PA08 (Table 6-1 note 3) with EIC/NMI, ADC0/AIN[8] and ADC1/AIN[2] functions; SERCOM I2C support on VDDIOB (Table 6-8)."
},
{
"number": "34",
"name": "PA09",
"type": "bidirectional",
"description": "High Sink PORT pin PA09 (Table 6-1 note 3) with EIC/EXTINT[9], ADC0/AIN[9] and ADC1/AIN[3] functions; SERCOM I2C support on VDDIOB (Table 6-8)."
},
{
"number": "35",
"name": "PA10",
"type": "bidirectional",
"description": "PORT pin PA10 with EIC/EXTINT[10] and ADC0/AIN[10] functions."
},
{
"number": "36",
"name": "PA11",
"type": "bidirectional",
"description": "PORT pin PA11 with EIC/EXTINT[11] and ADC0/AIN[11] functions."
},
{
"number": "37",
"name": "VDDIOB",
"type": "power_in",
"description": "I/O supply pin for the VDDIOB pin group; device operating range is 1.71 V to 3.63 V."
},
{
"number": "38",
"name": "GND",
"type": "power_in",
"description": "Ground pin of the device."
},
{
"number": "39",
"name": "PB10",
"type": "bidirectional",
"description": "PORT pin PB10 with EIC/EXTINT[10] function and SERCOM4/PAD[2], QSPI/SCK and I2S/SDI alternate functions."
},
{
"number": "40",
"name": "PB11",
"type": "bidirectional",
"description": "PORT pin PB11 with EIC/EXTINT[11] function and SERCOM4/PAD[3], QSPI/CS and I2S/FS[1] alternate functions."
},
{
"number": "41",
"name": "PB12",
"type": "bidirectional",
"description": "PORT pin PB12 with EIC/EXTINT[12] and PTC X26/Y26 functions, and SERCOM4/PAD[0] and CAN1/TX alternate functions."
},
{
"number": "42",
"name": "PB13",
"type": "bidirectional",
"description": "PORT pin PB13 with EIC/EXTINT[13] and PTC X27/Y27 functions, and SERCOM4/PAD[1] and CAN1/RX alternate functions."
},
{
"number": "43",
"name": "PB14",
"type": "bidirectional",
"description": "PORT pin PB14 with EIC/EXTINT[14] and PTC X28/Y28 functions, and SERCOM4/PAD[2] and GMAC/GMDC alternate functions."
},
{
"number": "44",
"name": "PB15",
"type": "bidirectional",
"description": "PORT pin PB15 with EIC/EXTINT[15] and PTC X29/Y29 functions, and SERCOM4/PAD[3] and GMAC/GMDIO alternate functions."
},
{
"number": "45",
"name": "VDDIO",
"type": "power_in",
"description": "I/O supply pin for its pin group; device operating range is 1.71 V to 3.63 V."
},
{
"number": "46",
"name": "GND",
"type": "power_in",
"description": "Ground pin of the device."
},
{
"number": "47",
"name": "PD08",
"type": "bidirectional",
"description": "High Sink PORT pin PD08 (Table 6-1 note 3) with EIC/EXTINT[3] function; SERCOM I2C support on VDDIO (Table 6-8)."
},
{
"number": "48",
"name": "PD09",
"type": "bidirectional",
"description": "High Sink PORT pin PD09 (Table 6-1 note 3) with EIC/EXTINT[4] function; SERCOM I2C support on VDDIO (Table 6-8)."
},
{
"number": "49",
"name": "PD10",
"type": "bidirectional",
"description": "PORT pin PD10 with EIC/EXTINT[5] function and SERCOM7/PAD[2], SERCOM6/PAD[2] and TCC0/WO[3] alternate functions."
},
{
"number": "50",
"name": "PD11",
"type": "bidirectional",
"description": "PORT pin PD11 with EIC/EXTINT[6] function and SERCOM7/PAD[3], SERCOM6/PAD[3] and TCC0/WO[4] alternate functions."
},
{
"number": "51",
"name": "PD12",
"type": "bidirectional",
"description": "PORT pin PD12 with EIC/EXTINT[7] function and TCC0/WO[5] alternate function."
},
{
"number": "52",
"name": "PC10",
"type": "bidirectional",
"description": "PORT pin PC10 with EIC/EXTINT[10] function and SERCOM6/PAD[2], SERCOM7/PAD[2], TCC0/WO[0] and TCC1/WO[4] alternate functions."
},
{
"number": "53",
"name": "GND",
"type": "power_in",
"description": "Ground pin of the device."
},
{
"number": "54",
"name": "VDDIO",
"type": "power_in",
"description": "I/O supply pin for its pin group; device operating range is 1.71 V to 3.63 V."
},
{
"number": "55",
"name": "PC11",
"type": "bidirectional",
"description": "PORT pin PC11 with EIC/EXTINT[11] function and SERCOM6/PAD[3], SERCOM7/PAD[3], TCC0/WO[1], TCC1/WO[5] and GMAC/GMDC alternate functions."
},
{
"number": "56",
"name": "PC12",
"type": "bidirectional",
"description": "PORT pin PC12 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "57",
"name": "PC13",
"type": "bidirectional",
"description": "PORT pin PC13 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "58",
"name": "PC14",
"type": "bidirectional",
"description": "PORT pin PC14 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "59",
"name": "PC15",
"type": "bidirectional",
"description": "PORT pin PC15 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "60",
"name": "PA12",
"type": "bidirectional",
"description": "High Sink PORT pin PA12 (Table 6-1 note 3) with SERCOM I2C support on VDDIO (Table 6-8); other alternate functions are on page 34, not in the supplied text."
},
{
"number": "61",
"name": "PA13",
"type": "bidirectional",
"description": "High Sink PORT pin PA13 (Table 6-1 note 3) with SERCOM I2C support on VDDIO (Table 6-8); other alternate functions are on page 34, not in the supplied text."
},
{
"number": "62",
"name": "PA14",
"type": "bidirectional",
"description": "PORT pin PA14, which is XIN of the XOSC0 main oscillator (VDDIO supply) per Table 6-2."
},
{
"number": "63",
"name": "PA15",
"type": "bidirectional",
"description": "PORT pin PA15, which is XOUT of the XOSC0 main oscillator (VDDIO supply) per Table 6-2."
},
{
"number": "64",
"name": "GND",
"type": "power_in",
"description": "Ground pin of the device."
},
{
"number": "65",
"name": "VDDIO",
"type": "power_in",
"description": "I/O supply pin for its pin group; device operating range is 1.71 V to 3.63 V."
},
{
"number": "66",
"name": "PA16",
"type": "bidirectional",
"description": "High Sink PORT pin PA16 (Table 6-1 note 3) with SERCOM I2C support on VDDIO (Table 6-8); other alternate functions are on page 34, not in the supplied text."
},
{
"number": "67",
"name": "PA17",
"type": "bidirectional",
"description": "High Sink PORT pin PA17 (Table 6-1 note 3) with SERCOM I2C support on VDDIO (Table 6-8); other alternate functions are on page 34, not in the supplied text."
},
{
"number": "68",
"name": "PA18",
"type": "bidirectional",
"description": "PORT pin PA18 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "69",
"name": "PA19",
"type": "bidirectional",
"description": "PORT pin PA19 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "70",
"name": "PC16",
"type": "bidirectional",
"description": "PORT pin PC16 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "71",
"name": "PC17",
"type": "bidirectional",
"description": "PORT pin PC17 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "72",
"name": "PC18",
"type": "bidirectional",
"description": "PORT pin PC18 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "73",
"name": "PC19",
"type": "bidirectional",
"description": "PORT pin PC19 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "74",
"name": "PC20",
"type": "bidirectional",
"description": "PORT pin PC20 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "75",
"name": "PC21",
"type": "bidirectional",
"description": "PORT pin PC21 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "76",
"name": "PC22",
"type": "bidirectional",
"description": "PORT pin PC22 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "77",
"name": "PC23",
"type": "bidirectional",
"description": "PORT pin PC23 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "78",
"name": "GND",
"type": "power_in",
"description": "Ground pin of the device."
},
{
"number": "79",
"name": "VDDIO",
"type": "power_in",
"description": "I/O supply pin for its pin group; device operating range is 1.71 V to 3.63 V."
},
{
"number": "80",
"name": "PD20",
"type": "bidirectional",
"description": "PORT pin PD20 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "81",
"name": "PD21",
"type": "bidirectional",
"description": "PORT pin PD21 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "82",
"name": "PB16",
"type": "bidirectional",
"description": "PORT pin PB16 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "83",
"name": "PB17",
"type": "bidirectional",
"description": "PORT pin PB17 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "84",
"name": "PB18",
"type": "bidirectional",
"description": "PORT pin PB18 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "85",
"name": "PB19",
"type": "bidirectional",
"description": "PORT pin PB19 digital I/O; its alternate-function list is in Table 6-1 on page 34, which is not in the supplied text."
},
{
"number": "86",
"name": "PB20",
"type": "bidirectional",
"description": "PORT pin PB20 with EIC/EXTINT[4] function and other alternate functions listed in Table 6-1."
},
{
"number": "87",
"name": "PB21",
"type": "bidirectional",
"description": "PORT pin PB21 with EIC/EXTINT[5] function and other alternate functions listed in Table 6-1."
},
{
"number": "88",
"name": "PA20",
"type": "bidirectional",
"description": "PORT pin PA20 with EIC/EXTINT[4] and PTC X14/Y14 functions."
},
{
"number": "89",
"name": "PA21",
"type": "bidirectional",
"description": "PORT pin PA21 with EIC/EXTINT[5] and PTC X15/Y15 functions."
},
{
"number": "90",
"name": "GND",
"type": "power_in",
"description": "Ground pin of the device."
},
{
"number": "91",
"name": "VDDIO",
"type": "power_in",
"description": "I/O supply pin for its pin group; device operating range is 1.71 V to 3.63 V."
},
{
"number": "92",
"name": "PA22",
"type": "bidirectional",
"description": "High Sink PORT pin PA22 (Table 6-1 note 3) with EIC/EXTINT[6] function; SERCOM I2C support on VDDIO (Table 6-8)."
},
{
"number": "93",
"name": "PA23",
"type": "bidirectional",
"description": "High Sink PORT pin PA23 (Table 6-1 note 3) with EIC/EXTINT[7] and PTC X17/Y17 functions; SERCOM I2C support on VDDIO (Table 6-8)."
},
{
"number": "94",
"name": "PA24",
"type": "bidirectional",
"description": "PORT pin PA24 with EIC/EXTINT[8] function and USB/DM alternate function."
},
{
"number": "95",
"name": "PA25",
"type": "bidirectional",
"description": "PORT pin PA25 with EIC/EXTINT[9] function and USB/DP alternate function."
},
{
"number": "96",
"name": "GND",
"type": "power_in",
"description": "Ground pin of the device."
},
{
"number": "97",
"name": "VDDIO",
"type": "power_in",
"description": "I/O supply pin for its pin group; device operating range is 1.71 V to 3.63 V."
},
{
"number": "98",
"name": "PB22",
"type": "bidirectional",
"description": "PORT pin PB22 with EIC/EXTINT[6] function, and XIN of the XOSC1 oscillator per Table 6-2."
},
{
"number": "99",
"name": "PB23",
"type": "bidirectional",
"description": "PORT pin PB23 with EIC/EXTINT[7] function, and XOUT of the XOSC1 oscillator per Table 6-2."
},
{
"number": "100",
"name": "PB24",
"type": "bidirectional",
"description": "PORT pin PB24 with EIC/EXTINT[8] function and AC/CMP[0] comparator output."
},
{
"number": "101",
"name": "PB25",
"type": "bidirectional",
"description": "PORT pin PB25 with EIC/EXTINT[9] function and AC/CMP[1] comparator output."
},
{
"number": "102",
"name": "PB26",
"type": "bidirectional",
"description": "PORT pin PB26 with EIC/EXTINT[12] function and other alternate functions listed in Table 6-1."
},
{
"number": "103",
"name": "PB27",
"type": "bidirectional",
"description": "PORT pin PB27 with EIC/EXTINT[13] function and other alternate functions listed in Table 6-1."
},
{
"number": "104",
"name": "PB28",
"type": "bidirectional",
"description": "PORT pin PB28 with EIC/EXTINT[14] function and other alternate functions listed in Table 6-1."
},
{
"number": "105",
"name": "PB29",
"type": "bidirectional",
"description": "PORT pin PB29 with EIC/EXTINT[15] function and other alternate functions listed in Table 6-1."
},
{
"number": "106",
"name": "GND",
"type": "power_in",
"description": "Ground pin of the device."
},
{
"number": "107",
"name": "VDDIO",
"type": "power_in",
"description": "I/O supply pin for its pin group; device operating range is 1.71 V to 3.63 V."
},
{
"number": "108",
"name": "PC24",
"type": "bidirectional",
"description": "PORT pin PC24 with EIC/EXTINT[8] function and TRACEDATA[3] trace output per Table 6-5."
},
{
"number": "109",
"name": "PC25",
"type": "bidirectional",
"description": "PORT pin PC25 with EIC/EXTINT[9] function and TRACEDATA[2] trace output per Table 6-5."
},
{
"number": "110",
"name": "PC26",
"type": "bidirectional",
"description": "PORT pin PC26 with EIC/EXTINT[10] function and TRACEDATA[1] trace output per Table 6-5."
},
{
"number": "111",
"name": "PC27",
"type": "bidirectional",
"description": "PORT pin PC27 with EIC/EXTINT[11] function; carries TRACECLK, and SWO in single-wire debug mode (Table 6-1 note 5, Table 6-5)."
},
{
"number": "112",
"name": "PC28",
"type": "bidirectional",
"description": "PORT pin PC28 with EIC/EXTINT[12] function and TRACEDATA[0] trace output per Table 6-5."
},
{
"number": "113",
"name": "PA27",
"type": "bidirectional",
"description": "PORT pin PA27 with EIC/EXTINT[11] function and GCLK/IO[1] alternate function."
},
{
"number": "114",
"name": "RESETN",
"type": "input",
"description": "External active-low reset input for the device (Table 5-1, Section 12.4)."
},
{
"number": "115",
"name": "VDDCORE",
"type": "power_in",
"description": "Core supply pin for the device's internal logic; electrical direction is not stated in the supplied text."
},
{
"number": "116",
"name": "GNDIO",
"type": "power_in",
"description": "I/O ground pin of the device."
},
{
"number": "117",
"name": "VSW",
"type": "power_out",
"description": "Switch node pin of the embedded buck regulator (Buck/LDO regulator feature, page 1); direction class is inferred."
},
{
"number": "118",
"name": "VDDIO",
"type": "power_in",
"description": "I/O supply pin for its pin group; device operating range is 1.71 V to 3.63 V."
},
{
"number": "119",
"name": "PA30",
"type": "bidirectional",
"description": "PORT pin PA30 with EIC/EXTINT[14] function and SWCLK serial-wire debug clock per Table 6-4."
},
{
"number": "120",
"name": "PA31",
"type": "bidirectional",
"description": "PORT pin PA31 with EIC/EXTINT[15] function and SWDIO serial-wire debug data per Table 6-4."
},
{
"number": "121",
"name": "PB30",
"type": "bidirectional",
"description": "PORT pin PB30 with EIC/EXTINT[14] function; carries SWO when not in single-wire trace mode (Table 6-1 note 5)."
},
{
"number": "122",
"name": "PB31",
"type": "bidirectional",
"description": "PORT pin PB31 with EIC/EXTINT[15] function and other alternate functions listed in Table 6-1."
},
{
"number": "123",
"name": "PC30",
"type": "bidirectional",
"description": "PORT pin PC30 with EIC/EXTINT[14] function and ADC1/AIN[12] analog input."
},
{
"number": "124",
"name": "PC31",
"type": "bidirectional",
"description": "PORT pin PC31 with EIC/EXTINT[15] function and ADC1/AIN[13] analog input."
},
{
"number": "125",
"name": "PB00",
"type": "bidirectional",
"description": "PORT pin PB00 with EIC/EXTINT[0] and ADC0/AIN[12] functions; RTC tamper input IN0 (Table 6-7); steady signal for XOSC32K jitter (Table 6-3)."
},
{
"number": "126",
"name": "PB01",
"type": "bidirectional",
"description": "PORT pin PB01 with EIC/EXTINT[1] and ADC0/AIN[13] functions; RTC tamper output OUT and SUPC OUT0 (Tables 6-6, 6-7)."
},
{
"number": "127",
"name": "PB02",
"type": "bidirectional",
"description": "PORT pin PB02 with EIC/EXTINT[2] and ADC0/AIN[14] functions; RTC tamper input IN1 and SUPC OUT1 (Tables 6-6, 6-7)."
},
{
"number": "128",
"name": "PB03",
"type": "bidirectional",
"description": "PORT pin PB03 with EIC/EXTINT[3] and ADC0/AIN[15] functions; steady signal for XOSC32K jitter (Table 6-3)."
}
],
"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: Alternate-function rows for these pins are in Table 6-1 on page 34, which is not in the supplied tex; Only the EIC/EXTINT function was taken from the mux table; the other alternate functions listed in T; The supplied text does not state electrical direction for VDDCORE or VSW. Types power_in (VDDCORE) a"
],
"pages_sent": 107,
"cost_usd": 0.713,
"at": "2026-10-30T18:37:42"
},
"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": 128,
"described": 128,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "atsame54p20a-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": "3b8d257b30f25cdf1e0f6a8c639d98f6174f71f83f9b50ea0ca10c4bbb58ee28",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "atsame54p20a-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": "e66cf6a50c8bac7b15185adeec48c1e883a099d96826876f68b2cd7aabd7cde1",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}