ATSAM3N1AB-AU

{
  "schema_version": 1,
  "type": "component",
  "slug": "atsam3n1ab-au",
  "title": "ATSAM3N1AB-AU",
  "brief": "Microchip Tech Pre-ordered MCUs, LQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "embedded processors & controllers",
    "atsam3n1ab-au",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ATSAM3N1AB-AU",
    "manufacturer": "Microchip Tech",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Pre-ordered MCUs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/e4e6ca22e00f658b21c2dba03d0196c1.pdf",
    "parts": {
      "symbol": "atsam3n1ab-au.kicad_sym",
      "footprint": "atsam3n1ab-au.kicad_mod",
      "model_3d": "atsam3n1ab-au-hero.glb",
      "model_3d_plain": "atsam3n1ab-au.glb",
      "model_3d_step": "atsam3n1ab-au-etched.step",
      "model_3d_step_plain": "atsam3n1ab-au.step",
      "lbr": "atsam3n1ab-au.lbr"
    },
    "distributor_links": {
      "lcsc": "C1338418",
      "digikey": "ATSAM3N1AB-AU-ND",
      "mouser": "556-ATSAM3N1AB-AU"
    },
    "distributor_check": {
      "checked_at": "2026-11-13T18:40:29Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ATSAM3N1AB-AU-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "556-ATSAM3N1AB-AU",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "ADVREF",
        "type": "power_in",
        "description": "ADC reference voltage input; conversions extend from 0 V to ADVREF, which may equal the analog supply, and an external decoupling capacitor is required for noise filtering."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection."
      },
      {
        "number": "3",
        "name": "PB0/AD4",
        "type": "bidirectional",
        "description": "PIO line PB0 multiplexed with ADC analog input AD4 (ADC input range 0 V to ADVREF)."
      },
      {
        "number": "4",
        "name": "PB1/AD5",
        "type": "bidirectional",
        "description": "PIO line PB1 multiplexed with ADC analog input AD5 (ADC input range 0 V to ADVREF)."
      },
      {
        "number": "5",
        "name": "PB2/AD6",
        "type": "bidirectional",
        "description": "PIO line PB2 multiplexed with ADC analog input AD6 and UART1 receive URXD1."
      },
      {
        "number": "6",
        "name": "PB3/AD7",
        "type": "bidirectional",
        "description": "PIO line PB3 multiplexed with ADC analog input AD7 and UART1 transmit UTXD1."
      },
      {
        "number": "7",
        "name": "VDDIN",
        "type": "power_in",
        "description": "Supply for the voltage regulator, ADC and DAC; the voltage regulator operates from 1.8 V to 3.6 V."
      },
      {
        "number": "8",
        "name": "VDDOUT",
        "type": "power_out",
        "description": "Output of the on-chip voltage regulator that powers VDDCORE when the internal regulator is used; its voltage limits are in Section 5.3, which is not in the extracted text."
      },
      {
        "number": "9",
        "name": "PA17/PGMD5/AD0",
        "type": "bidirectional",
        "description": "PIO line PA17 multiplexed with Fast Flash programming data PGMD5 and ADC analog input AD0."
      },
      {
        "number": "10",
        "name": "PA18/PGMD6/AD1",
        "type": "bidirectional",
        "description": "PIO line PA18 multiplexed with Fast Flash programming data PGMD6 and ADC analog input AD1."
      },
      {
        "number": "11",
        "name": "PA19/PGMD7/AD2",
        "type": "bidirectional",
        "description": "PIO line PA19 multiplexed with Fast Flash programming data PGMD7 and ADC analog input AD2 (wake-up WKUP9)."
      },
      {
        "number": "12",
        "name": "PA20/AD3",
        "type": "bidirectional",
        "description": "PIO line PA20 multiplexed with ADC analog input AD3 (wake-up WKUP10)."
      },
      {
        "number": "13",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Supply for peripheral I/O lines, backup part, 32 kHz crystal oscillator and oscillator pads, 1.62 V to 3.6 V; it must always be higher than or equal to VDDCORE."
      },
      {
        "number": "14",
        "name": "PA16/PGMD4",
        "type": "bidirectional",
        "description": "PIO line PA16 multiplexed with Fast Flash programming data PGMD4."
      },
      {
        "number": "15",
        "name": "PA15/PGMD3",
        "type": "bidirectional",
        "description": "PIO line PA15 multiplexed with Fast Flash programming data PGMD3."
      },
      {
        "number": "16",
        "name": "PA14/PGMD2",
        "type": "bidirectional",
        "description": "PIO line PA14 multiplexed with Fast Flash programming data PGMD2 and SPI clock SPCK."
      },
      {
        "number": "17",
        "name": "PA13/PGMD1",
        "type": "bidirectional",
        "description": "PIO line PA13 multiplexed with Fast Flash programming data PGMD1 and SPI MOSI."
      },
      {
        "number": "18",
        "name": "VDDCORE",
        "type": "power_in",
        "description": "Core supply powering the processor, embedded memories and peripherals, 1.62 V to 1.95 V."
      },
      {
        "number": "19",
        "name": "PA12/PGMD0",
        "type": "bidirectional",
        "description": "PIO line PA12 multiplexed with Fast Flash programming data PGMD0 and SPI MISO."
      },
      {
        "number": "20",
        "name": "PA11/PGMM3",
        "type": "bidirectional",
        "description": "PIO line PA11 multiplexed with programming mode input PGMM3 and SPI NPCS0."
      },
      {
        "number": "21",
        "name": "PA10/PGMM2",
        "type": "bidirectional",
        "description": "PIO line PA10 multiplexed with programming mode input PGMM2, UART0 transmit UTXD0 and SPI NPCS2."
      },
      {
        "number": "22",
        "name": "PA9/PGMM1",
        "type": "bidirectional",
        "description": "PIO line PA9 multiplexed with programming mode input PGMM1, UART0 receive URXD0 and SPI NPCS1."
      },
      {
        "number": "23",
        "name": "PA8/XOUT32/PGMM0",
        "type": "bidirectional",
        "description": "PIO line PA8 multiplexed with programming mode input PGMM0, 32 kHz crystal output XOUT32 and ADC trigger ADTRG."
      },
      {
        "number": "24",
        "name": "PA7/XIN32/PGMNVALID",
        "type": "bidirectional",
        "description": "PIO line PA7 multiplexed with 32 kHz crystal input XIN32 and the programming data-direction output PGMNVALID (active low)."
      },
      {
        "number": "25",
        "name": "TDI/PB4",
        "type": "bidirectional",
        "description": "JTAG test data input TDI multiplexed with PIO line PB4 (also TWI1 data TWD1)."
      },
      {
        "number": "26",
        "name": "PA6/PGMNOE",
        "type": "bidirectional",
        "description": "PIO line PA6 multiplexed with programming read input PGMNOE (active low)."
      },
      {
        "number": "27",
        "name": "PA5/PGMRDY",
        "type": "bidirectional",
        "description": "PIO line PA5 multiplexed with programming ready output PGMRDY (active high)."
      },
      {
        "number": "28",
        "name": "PA4/PGMNCMD",
        "type": "bidirectional",
        "description": "PIO line PA4 multiplexed with programming command input PGMNCMD (active low) and TWI0 clock TWCK0."
      },
      {
        "number": "29",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Microcontroller reset, active low, operating as an input or output."
      },
      {
        "number": "30",
        "name": "TST",
        "type": "input",
        "description": "Test select: low at power-up selects normal operation and high selects test or FFPI mode; it has an internal pull-down of about 15 kΩ and may be left unconnected for normal operation."
      },
      {
        "number": "31",
        "name": "PA3",
        "type": "bidirectional",
        "description": "PIO line PA3 multiplexed with TWI0 data TWD0 and SPI NPCS3."
      },
      {
        "number": "32",
        "name": "PA2/PGMEN2",
        "type": "bidirectional",
        "description": "PIO line PA2 multiplexed with programming enable input PGMEN2."
      },
      {
        "number": "33",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Supply for peripheral I/O lines, 1.62 V to 3.6 V; it must always be higher than or equal to VDDCORE."
      },
      {
        "number": "34",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection."
      },
      {
        "number": "35",
        "name": "PA1/PGMEN1",
        "type": "bidirectional",
        "description": "PIO line PA1 multiplexed with programming enable input PGMEN1 and TC0 output TIOB0."
      },
      {
        "number": "36",
        "name": "PA0/PGMEN0",
        "type": "bidirectional",
        "description": "PIO line PA0 multiplexed with programming enable input PGMEN0 and TC0 signal TIOA0."
      },
      {
        "number": "37",
        "name": "TDO/TRACESWO/PB5",
        "type": "output",
        "description": "JTAG test data output TDO, multiplexed with serial-wire trace output TRACESWO and PIO line PB5; outside debug mode it is in input mode, so its internal pull-up must be enabled to avoid floating-input current."
      },
      {
        "number": "38",
        "name": "JTAGSEL",
        "type": "input",
        "description": "JTAG selection input (active high): with TST low at power-up, a high level enables IEEE 1149.1 boundary scan, and a chip reset is required after it is changed."
      },
      {
        "number": "39",
        "name": "TMS/SWDIO/PB6",
        "type": "bidirectional",
        "description": "Test mode select TMS for JTAG or serial-wire data SWDIO, multiplexed with PIO line PB6."
      },
      {
        "number": "40",
        "name": "TCK/SWCLK/PB7",
        "type": "input",
        "description": "Test clock TCK for JTAG or serial-wire clock SWCLK, multiplexed with PIO line PB7."
      },
      {
        "number": "41",
        "name": "VDDCORE",
        "type": "power_in",
        "description": "Core supply powering the processor, embedded memories and peripherals, 1.62 V to 1.95 V."
      },
      {
        "number": "42",
        "name": "ERASE/PB12",
        "type": "bidirectional",
        "description": "PIO line PB12 multiplexed with the ERASE pin, whose function is described in Section 6.5 (not in the extracted text)."
      },
      {
        "number": "43",
        "name": "PB10",
        "type": "bidirectional",
        "description": "PIO line PB10 whose Schmitt trigger can be disabled through the PIO registers."
      },
      {
        "number": "44",
        "name": "PB11",
        "type": "bidirectional",
        "description": "PIO line PB11 whose Schmitt trigger can be disabled through the PIO registers."
      },
      {
        "number": "45",
        "name": "XOUT/PB8",
        "type": "bidirectional",
        "description": "Main oscillator output XOUT for a 3 to 20 MHz crystal, multiplexed with PIO line PB8."
      },
      {
        "number": "46",
        "name": "XIN/P/PB9/GMCK",
        "type": "input",
        "description": "Main oscillator input XIN for a 3 to 20 MHz crystal, multiplexed with PIO line PB9 and the programming clock PGMCK."
      },
      {
        "number": "47",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Supply for peripheral I/O lines, 1.62 V to 3.6 V; it must always be higher than or equal to VDDCORE."
      },
      {
        "number": "48",
        "name": "VDDPLL",
        "type": "power_in",
        "description": "Supply for the PLL, the Fast RC oscillator and the 3 to 20 MHz oscillators, 1.62 V to 1.95 V."
      }
    ],
    "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: MPN ATSAM3N1AB-AU is listed in the ordering table (page 752) as LQFP48 with revision B. The 48-pin p; Pin 46 name is printed as 'XIN/P/PB9/GMCK' in Table 4-4, which looks like a typo; the 64-pin table p; Some pin functions are not described in the extracted text: VDDOUT (regulator details in Section 5.3"
        ],
        "pages_sent": 50,
        "cost_usd": 0.2646,
        "at": "2026-11-13T18:40:18"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/e4e6ca22e00f658b21c2dba03d0196c1.pdf",
        "pages": 766,
        "sha256": "6e0c0e7028df8bf3",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 48,
        "described": 48,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "atsam3n1ab-au.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9,
          9,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "9dea352d93177c2904afd7d7b68ea8855ce1ab691f69f8b3e13655600514b6bf",
        "checked": "2026-11-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "atsam3n1ab-au-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9,
          9,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c2808d504f1ea64c234cb2a6cc300f9e3a427e44e40401d25320897370bdcd28",
        "checked": "2026-11-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "LQFP48",
      "source_page": 744,
      "D": {
        "nom_mm": 7,
        "range_mm": [
          null,
          null
        ]
      },
      "E1": {
        "nom_mm": 7,
        "range_mm": [
          null,
          null
        ]
      },
      "E": {
        "nom_mm": 9,
        "range_mm": [
          null,
          null
        ]
      },
      "e": {
        "nom_mm": 0.5,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.6,
        "range_mm": [
          null,
          1.6
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "atsam3n1ab-au.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "LQFP-48(7x7)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "48"
    },
    "appearance": {
      "housing": {
        "quote": "TBH [PC, R1, LSL #1] ; R1 is the index, PC is used as base of the",
        "page": 129,
        "doc": "ds.pdf",
        "material": "PC"
      },
      "version": 1,
      "datasheet_sha256": "6e0c0e7028df8bf3c7f62aaa1e6790229b9c4dafe5c16394ad05ce84f54f5303"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "6e0c0e7028df8bf3c7f62aaa1e6790229b9c4dafe5c16394ad05ce84f54f5303",
      "rows": [
        {
          "name": "VDDCORE core supply voltage",
          "symbol": "VDDCORE",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.62,
          "typ": null,
          "max": 1.95,
          "conditions": "",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "VDDIO I/O supply voltage",
          "symbol": "VDDIO",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.62,
          "typ": null,
          "max": 3.6,
          "conditions": "",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "VDDIN voltage regulator supply voltage",
          "symbol": "VDDIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.8,
          "typ": null,
          "max": 3.6,
          "conditions": "Voltage Regulator",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "VDDPLL PLL and oscillator supply voltage",
          "symbol": "VDDPLL",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.62,
          "typ": null,
          "max": 1.95,
          "conditions": "",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "Main supply for ADC and DAC usable",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": null,
          "conditions": "With Main Supply >= 3 V all peripherals usable; below 3 V ADC and DAC not usable",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "VDDIO minimum operating voltage before VDDCORE reaches VDDCORE(min) at power-up",
          "symbol": "VDDIO",
          "kind": "timing",
          "unit": "V",
          "min": 1.62,
          "typ": null,
          "max": null,
          "conditions": "Power-up sequencing",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "VDDIO rising slope when VDDCORE rises with VDDIO",
          "symbol": "",
          "kind": "timing",
          "unit": "V/ms",
          "min": 5,
          "typ": null,
          "max": null,
          "conditions": "VDDCORE rising at the same time as VDDIO",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "VDDIO level at power-up before VDDIN reaches 1.0 V",
          "symbol": "VDDIO",
          "kind": "timing",
          "unit": "V",
          "min": 0.6,
          "typ": null,
          "max": null,
          "conditions": "At power-up, before VDDIN reaches 1.0 V",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "VDDIO relative to VDDIN at startup",
          "symbol": "VDDIO",
          "kind": "timing",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "VDDIO at or below VDDIN voltage + 0.5 V",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Voltage regulator static current in Normal mode",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 700,
          "conditions": "Normal mode, static current",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Voltage regulator quiescent current in Wait mode",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 7,
          "max": null,
          "conditions": "Wait mode",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Voltage regulator current consumption in Backup mode",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "Backup mode; VDDOUT driven internally to GND",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Voltage regulator default output voltage",
          "symbol": "VDDOUT",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.8,
          "max": null,
          "conditions": "Default output voltage",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Voltage regulator start-up time to Normal mode",
          "symbol": "",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "Start-up to Normal mode",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Backup mode total consumption",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 3,
          "max": null,
          "conditions": "Backup mode, total current consumption",
          "source_page": 21,
          "source": "datasheet"
        },
        {
          "name": "Backup mode wake-up time",
          "symbol": "",
          "kind": "timing",
          "unit": "ms",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "Wake-up from Backup mode",
          "source_page": 21,
          "source": "datasheet"
        },
        {
          "name": "Wait mode current consumption",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "5 µA on VDDCORE; 15 µA total with internal voltage regulator; 8 µA total without internal voltage regulator (Wait mode)",
          "source_page": 21,
          "source": "datasheet"
        },
        {
          "name": "Wait mode wake-up time",
          "symbol": "",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "Wake-up from Wait mode",
          "source_page": 21,
          "source": "datasheet"
        },
        {
          "name": "Supply monitor threshold on VDDIO",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 1.9,
          "typ": null,
          "max": 3.4,
          "conditions": "Programmable in 100 mV steps (SMTH)",
          "source_page": 253,
          "source": "datasheet"
        },
        {
          "name": "Fast RC low-power oscillator frequency (Slow Clock RC)",
          "symbol": "",
          "kind": "electrical",
          "unit": "kHz",
          "min": 22,
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