ATSAM3X4CA-AU

{
  "slug": "atsam3x4ca-au",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech Pre-ordered MCUs, LQFP-100(14x14). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "atsam3x4ca-au",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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  "files": [
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    "docs/atsam3x4ca-au-datasheet.pdf",
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  "component": {
    "mpn": "ATSAM3X4CA-AU",
    "manufacturer": "Microchip Tech",
    "package": "LQFP-100(14x14)",
    "pin_count": 100,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Pre-ordered MCUs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/8c90229c36152e998bdafd43bbd2be09.pdf",
    "parts": {
      "symbol": "atsam3x4ca-au.kicad_sym",
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      "model_3d_step": "atsam3x4ca-au-etched.step",
      "model_3d_step_plain": "atsam3x4ca-au.step",
      "lbr": "atsam3x4ca-au.lbr"
    },
    "distributor_links": {
      "lcsc": "C612578",
      "digikey": "ATSAM3X4CA-AU-ND",
      "mouser": "556-ATSAM3X4CA-AU"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T20:33:20Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ATSAM3X4CA-AU-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "556-ATSAM3X4CA-AU",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PB26",
        "type": "bidirectional",
        "description": "PIOB line PB26, multiplexed with TC0 TCLK0 (peripheral B)."
      },
      {
        "number": "2",
        "name": "PA9",
        "type": "bidirectional",
        "description": "PIOA line PA9, multiplexed with UART UTXD (peripheral A)."
      },
      {
        "number": "3",
        "name": "PA10",
        "type": "bidirectional",
        "description": "PIOA general-purpose I/O line PA10."
      },
      {
        "number": "4",
        "name": "PA11",
        "type": "bidirectional",
        "description": "PIOA line PA11, multiplexed with ADC ADTRG (peripheral B)."
      },
      {
        "number": "5",
        "name": "PA12",
        "type": "bidirectional",
        "description": "PIOA general-purpose I/O line PA12."
      },
      {
        "number": "6",
        "name": "PA13",
        "type": "bidirectional",
        "description": "PIOA general-purpose I/O line PA13."
      },
      {
        "number": "7",
        "name": "PA14",
        "type": "bidirectional",
        "description": "PIOA line PA14, multiplexed with SSC TK (peripheral B)."
      },
      {
        "number": "8",
        "name": "PA15",
        "type": "bidirectional",
        "description": "PIOA line PA15, multiplexed with SSC TF (peripheral B)."
      },
      {
        "number": "9",
        "name": "PA17",
        "type": "bidirectional",
        "description": "PIOA line PA17, multiplexed with TWI0 TWD0 (peripheral A)."
      },
      {
        "number": "10",
        "name": "VDDCORE",
        "type": "power_in",
        "description": "Core, embedded memories and peripherals supply, 1.62V to 1.95V."
      },
      {
        "number": "11",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Peripheral I/O lines supply, 1.62V to 3.6V."
      },
      {
        "number": "12",
        "name": "GND",
        "type": "power_in",
        "description": "Ground common to the VDDCORE and VDDIO supplies."
      },
      {
        "number": "13",
        "name": "PA0",
        "type": "bidirectional",
        "description": "PIOA general-purpose I/O line PA0."
      },
      {
        "number": "14",
        "name": "PA1",
        "type": "bidirectional",
        "description": "PIOA general-purpose I/O line PA1."
      },
      {
        "number": "15",
        "name": "PA5",
        "type": "bidirectional",
        "description": "PIOA line PA5, multiplexed with TC0 TIOA2 (peripheral A)."
      },
      {
        "number": "16",
        "name": "PA7",
        "type": "bidirectional",
        "description": "PIOA line PA7, multiplexed with TC0 TCLK2 (peripheral A)."
      },
      {
        "number": "17",
        "name": "PA8",
        "type": "bidirectional",
        "description": "PIOA line PA8, multiplexed with UART URXD (peripheral A)."
      },
      {
        "number": "18",
        "name": "PB28",
        "type": "bidirectional",
        "description": "PIOB general-purpose I/O line PB28."
      },
      {
        "number": "19",
        "name": "PB29",
        "type": "bidirectional",
        "description": "PIOB general-purpose I/O line PB29."
      },
      {
        "number": "20",
        "name": "PB30",
        "type": "bidirectional",
        "description": "PIOB general-purpose I/O line PB30."
      },
      {
        "number": "21",
        "name": "PB31",
        "type": "bidirectional",
        "description": "PIOB general-purpose I/O line PB31."
      },
      {
        "number": "22",
        "name": "GNDPLL",
        "type": "power_in",
        "description": "Separate ground for the VDDPLL supply."
      },
      {
        "number": "23",
        "name": "VDDPLL",
        "type": "power_in",
        "description": "Powers PLL A, UPLL and the 3-20 MHz oscillator, 1.62V to 1.95V."
      },
      {
        "number": "24",
        "name": "XOUT",
        "type": "output",
        "description": "Main 3-20 MHz crystal oscillator output."
      },
      {
        "number": "25",
        "name": "XIN",
        "type": "input",
        "description": "Main 3-20 MHz crystal oscillator input."
      },
      {
        "number": "26",
        "name": "DHSDP",
        "type": "bidirectional",
        "description": "USB Hi-Speed differential data line D+."
      },
      {
        "number": "27",
        "name": "DHSDM",
        "type": "bidirectional",
        "description": "USB Hi-Speed differential data line D-."
      },
      {
        "number": "28",
        "name": "VBUS",
        "type": "power_in",
        "description": "USB VBus bus power measurement input."
      },
      {
        "number": "29",
        "name": "VBG",
        "type": "passive",
        "description": "VBG pin; function not described in the provided text."
      },
      {
        "number": "30",
        "name": "VDDUTMI",
        "type": "power_in",
        "description": "Powers the UTMI+ interface, 3.0V to 3.6V, 3.3V nominal."
      },
      {
        "number": "31",
        "name": "DFSDP",
        "type": "bidirectional",
        "description": "USB Full-Speed differential data line D+."
      },
      {
        "number": "32",
        "name": "DFSDM",
        "type": "bidirectional",
        "description": "USB Full-Speed differential data line D-."
      },
      {
        "number": "33",
        "name": "GNDUTMI",
        "type": "power_in",
        "description": "Separate ground for the VDDUTMI supply."
      },
      {
        "number": "34",
        "name": "VDDCORE",
        "type": "power_in",
        "description": "Core, embedded memories and peripherals supply, 1.62V to 1.95V."
      },
      {
        "number": "35",
        "name": "JTAGSEL",
        "type": "input",
        "description": "JTAG selection input, active high; chip reset required after changing it."
      },
      {
        "number": "36",
        "name": "XIN32",
        "type": "input",
        "description": "32.768 kHz slow clock crystal input; external clock input in bypass mode."
      },
      {
        "number": "37",
        "name": "XOUT32",
        "type": "output",
        "description": "32.768 kHz slow clock crystal oscillator output; leave unconnected if crystal not used."
      },
      {
        "number": "38",
        "name": "TST",
        "type": "input",
        "description": "Test select input with ~15 kΩ permanent pull-down; low at power-up selects normal operation."
      },
      {
        "number": "39",
        "name": "VDDBU",
        "type": "power_in",
        "description": "Powers slow clock oscillator and part of the System Controller, 1.62V to 3.6V."
      },
      {
        "number": "40",
        "name": "FWUP",
        "type": "input",
        "description": "Wake-up pin (FWUP, renamed from WAKEUP); high with JTAGSEL during JTAG boundary scan."
      },
      {
        "number": "41",
        "name": "GND",
        "type": "power_in",
        "description": "Ground common to the VDDCORE and VDDIO supplies."
      },
      {
        "number": "42",
        "name": "VDDOUT",
        "type": "power_out",
        "description": "Output of the voltage regulator."
      },
      {
        "number": "43",
        "name": "VDDIN",
        "type": "power_in",
        "description": "Powers the voltage regulator (shared with ADC and DAC)."
      },
      {
        "number": "44",
        "name": "GND",
        "type": "power_in",
        "description": "Ground common to the VDDCORE and VDDIO supplies."
      },
      {
        "number": "45",
        "name": "VDDCORE",
        "type": "power_in",
        "description": "Core, embedded memories and peripherals supply, 1.62V to 1.95V."
      },
      {
        "number": "46",
        "name": "PB27",
        "type": "bidirectional",
        "description": "PIOB line PB27, multiplexed with TC0 TIOB0 (peripheral B)."
      },
      {
        "number": "47",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Microcontroller reset, input/output, active low."
      },
      {
        "number": "48",
        "name": "PA18",
        "type": "bidirectional",
        "description": "PIOA line PA18, multiplexed with TWI0 TWCK0 (peripheral A)."
      },
      {
        "number": "49",
        "name": "PA19",
        "type": "bidirectional",
        "description": "PIOA line PA19, multiplexed with HSMCI MCCK (peripheral A)."
      },
      {
        "number": "50",
        "name": "PA20",
        "type": "bidirectional",
        "description": "PIOA line PA20, multiplexed with HSMCI MCCDA (peripheral A)."
      },
      {
        "number": "51",
        "name": "VDDANA",
        "type": "power_in",
        "description": "Powers the ADC and DAC cells, 2.0V to 3.6V."
      },
      {
        "number": "52",
        "name": "GNDANA",
        "type": "power_in",
        "description": "Separate ground for the VDDANA supply."
      },
      {
        "number": "53",
        "name": "ADVREF",
        "type": "power_in",
        "description": "ADC reference voltage."
      },
      {
        "number": "54",
        "name": "PB15",
        "type": "bidirectional",
        "description": "PIOB general-purpose I/O line PB15."
      },
      {
        "number": "55",
        "name": "PB16",
        "type": "bidirectional",
        "description": "PIOB line PB16, multiplexed with TC1 TCLK5 (peripheral A)."
      },
      {
        "number": "56",
        "name": "PA16",
        "type": "bidirectional",
        "description": "PIOA line PA16, SSC TD (peripheral B) or ADC AD7."
      },
      {
        "number": "57",
        "name": "PA24",
        "type": "bidirectional",
        "description": "PIOA line PA24, HSMCI MCDA3 (peripheral A) or ADC AD6."
      },
      {
        "number": "58",
        "name": "PA23",
        "type": "bidirectional",
        "description": "PIOA line PA23, HSMCI MCDA2 (peripheral A), TC1 TCLK4 (B) or ADC AD5."
      },
      {
        "number": "59",
        "name": "PA22",
        "type": "bidirectional",
        "description": "PIOA line PA22, HSMCI MCDA1 (peripheral A), TC1 TCLK3 (B) or ADC AD4."
      },
      {
        "number": "60",
        "name": "PA6",
        "type": "bidirectional",
        "description": "PIOA line PA6, TC0 TIOB2 (peripheral A) or ADC AD3."
      },
      {
        "number": "61",
        "name": "PA4",
        "type": "bidirectional",
        "description": "PIOA line PA4, TC0 TCLK1 (peripheral A) or ADC AD2."
      },
      {
        "number": "62",
        "name": "PA3",
        "type": "bidirectional",
        "description": "PIOA line PA3, TC0 TIOB1 (peripheral A) or ADC AD1/WKUP1."
      },
      {
        "number": "63",
        "name": "PA2",
        "type": "bidirectional",
        "description": "PIOA line PA2, TC0 TIOA1 (peripheral A) or ADC AD0."
      },
      {
        "number": "64",
        "name": "PB12",
        "type": "bidirectional",
        "description": "PIOB line PB12, TWI1 TWD1 (peripheral A) or ADC AD8."
      },
      {
        "number": "65",
        "name": "PB13",
        "type": "bidirectional",
        "description": "PIOB line PB13, TWI1 TWCK1 (peripheral A) or ADC AD9."
      },
      {
        "number": "66",
        "name": "PB17",
        "type": "bidirectional",
        "description": "PIOB line PB17, SSC RF (peripheral A) or ADC AD10."
      },
      {
        "number": "67",
        "name": "PB18",
        "type": "bidirectional",
        "description": "PIOB line PB18, SSC RD (peripheral A) or ADC AD11."
      },
      {
        "number": "68",
        "name": "PB19",
        "type": "bidirectional",
        "description": "PIOB line PB19, SSC RK (peripheral A) or ADC AD12."
      },
      {
        "number": "69",
        "name": "PB20",
        "type": "bidirectional",
        "description": "PIOB line PB20, SPI0 NPCS1 (peripheral B) or ADC AD13."
      },
      {
        "number": "70",
        "name": "PB21",
        "type": "bidirectional",
        "description": "PIOB line PB21, SPI0 NPCS2 (peripheral B) or ADC AD14/WKUP13."
      },
      {
        "number": "71",
        "name": "VDDCORE",
        "type": "power_in",
        "description": "Core, embedded memories and peripherals supply, 1.62V to 1.95V."
      },
      {
        "number": "72",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Peripheral I/O lines supply, 1.62V to 3.6V."
      },
      {
        "number": "73",
        "name": "GND",
        "type": "power_in",
        "description": "Ground common to the VDDCORE and VDDIO supplies."
      },
      {
        "number": "74",
        "name": "PA21",
        "type": "bidirectional",
        "description": "PIOA line PA21, multiplexed with HSMCI MCDA0 (peripheral A)."
      },
      {
        "number": "75",
        "name": "PA25",
        "type": "bidirectional",
        "description": "PIOA line PA25, multiplexed with SPI0 MISO (peripheral A)."
      },
      {
        "number": "76",
        "name": "PA26",
        "type": "bidirectional",
        "description": "PIOA line PA26, multiplexed with SPI0 MOSI (peripheral A)."
      },
      {
        "number": "77",
        "name": "PA27",
        "type": "bidirectional",
        "description": "PIOA line PA27, multiplexed with SPI0 SPCK (peripheral A)."
      },
      {
        "number": "78",
        "name": "PA28",
        "type": "bidirectional",
        "description": "PIOA line PA28, multiplexed with SPI0 NPCS0 (peripheral A)."
      },
      {
        "number": "79",
        "name": "PA29",
        "type": "bidirectional",
        "description": "PIOA line PA29, multiplexed with SPI0 NPCS1 (peripheral A)."
      },
      {
        "number": "80",
        "name": "PB0",
        "type": "bidirectional",
        "description": "PIOB line PB0, multiplexed with TC1 TIOA3 (peripheral B)."
      },
      {
        "number": "81",
        "name": "PB1",
        "type": "bidirectional",
        "description": "PIOB line PB1, multiplexed with TC1 TIOB3 (peripheral B)."
      },
      {
        "number": "82",
        "name": "PB2",
        "type": "bidirectional",
        "description": "PIOB line PB2, multiplexed with TC1 TIOA4 (peripheral B)."
      },
      {
        "number": "83",
        "name": "PB3",
        "type": "bidirectional",
        "description": "PIOB line PB3, multiplexed with TC1 TIOB4 (peripheral B)."
      },
      {
        "number": "84",
        "name": "PB4",
        "type": "bidirectional",
        "description": "PIOB line PB4, multiplexed with TC1 TIOA5 (peripheral B)."
      },
      {
        "number": "85",
        "name": "PB5",
        "type": "bidirectional",
        "description": "PIOB line PB5, multiplexed with TC1 TIOB5 (peripheral B)."
      },
      {
        "number": "86",
        "name": "PB6",
        "type": "bidirectional",
        "description": "PIOB general-purpose I/O line PB6."
      },
      {
        "number": "87",
        "name": "PB7",
        "type": "bidirectional",
        "description": "PIOB general-purpose I/O line PB7."
      },
      {
        "number": "88",
        "name": "PB8",
        "type": "bidirectional",
        "description": "PIOB general-purpose I/O line PB8."
      },
      {
        "number": "89",
        "name": "VDDCORE",
        "type": "power_in",
        "description": "Core, embedded memories and peripherals supply, 1.62V to 1.95V."
      },
      {
        "number": "90",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Peripheral I/O lines supply, 1.62V to 3.6V."
      },
      {
        "number": "91",
        "name": "GND",
        "type": "power_in",
        "description": "Ground common to the VDDCORE and VDDIO supplies."
      },
      {
        "number": "92",
        "name": "PB9",
        "type": "bidirectional",
        "description": "PIOB general-purpose I/O line PB9."
      },
      {
        "number": "93",
        "name": "PB10",
        "type": "bidirectional",
        "description": "PIOB line PB10, multiplexed with USB UOTGVBOF (peripheral A)."
      },
      {
        "number": "94",
        "name": "PB11",
        "type": "bidirectional",
        "description": "PIOB line PB11, multiplexed with USB UOTGID (peripheral A); enable internal pull-up if used."
      },
      {
        "number": "95",
        "name": "PC0",
        "type": "bidirectional",
        "description": "PIOC line PC0, which is the ERASE pin by default."
      },
      {
        "number": "96",
        "name": "PB14",
        "type": "bidirectional",
        "description": "PIOB general-purpose I/O line PB14."
      },
      {
        "number": "97",
        "name": "PB22",
        "type": "bidirectional",
        "description": "PIOB general-purpose I/O line PB22."
      },
      {
        "number": "98",
        "name": "PB23",
        "type": "bidirectional",
        "description": "PIOB line PB23, multiplexed with SPI0 NPCS3 (peripheral B)."
      },
      {
        "number": "99",
        "name": "PB24",
        "type": "bidirectional",
        "description": "PIOB general-purpose I/O line PB24."
      },
      {
        "number": "100",
        "name": "PB25",
        "type": "bidirectional",
        "description": "PIOB line PB25, multiplexed with TC0 TIOA0 (peripheral B)."
      }
    ],
    "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: VBG function is not described in the supplied text; typed passive as a placeholder.; Descriptions for non-PIO pins (XIN/XOUT, VBUS, ADVREF, FWUP) are inferred from block diagrams and si; Peripheral mux listings for PIOs come only from the peripheral chapters supplied; the full PIO multi",
          "12/100 pins cited to the wrong page (name found elsewhere): ['24:XOUT@p15', '26:DHSDP@p1056', '27:DHSDM@p1056', '28:VBUS@p1056']"
        ],
        "pages_sent": 73,
        "cost_usd": 0.7642,
        "at": "2026-10-30T20:33:02"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/8c90229c36152e998bdafd43bbd2be09.pdf",
        "pages": 1459,
        "sha256": "aafc34e215ce68af",
        "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": [
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        "file": "atsam3x4ca-au.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          16.0,
          16.0,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "51720097260ffba41c3062f85f67623721102fa535901c47cb555a1f444feeb3",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "atsam3x4ca-au-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          16.0,
          16.0,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d52a36216540377553b9aca6cc7517a489fdfef354bf78bdaad99160ccce4643",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}