component
ATSAM3A8CA-AU
Public Made by Adomby adom
Microchip Tech Pre-ordered MCUs, LQFP-100(14x14). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "atsam3a8ca-au",
"title": "ATSAM3A8CA-AU",
"brief": "Microchip Tech Pre-ordered MCUs, LQFP-100(14x14). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"embedded processors & controllers",
"atsam3a8ca-au",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "ATSAM3A8CA-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": "atsam3a8ca-au.kicad_sym",
"footprint": "atsam3a8ca-au.kicad_mod",
"model_3d": "atsam3a8ca-au-hero.glb",
"model_3d_plain": "atsam3a8ca-au-etched.glb",
"model_3d_step": "atsam3a8ca-au-etched.step",
"model_3d_step_plain": "atsam3a8ca-au.step",
"lbr": "atsam3a8ca-au.lbr"
},
"distributor_links": {
"lcsc": "C1337749"
},
"distributor_check": {
"checked_at": "2026-10-31T18:48:01Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "PB26",
"type": "bidirectional",
"description": "PIO port B line 26, with TC0 TCLK0 as peripheral B function."
},
{
"number": "2",
"name": "PA9",
"type": "bidirectional",
"description": "PIO port A line 9, with UART UTXD as peripheral A function."
},
{
"number": "3",
"name": "PA10",
"type": "bidirectional",
"description": "PIO port A line 10, general-purpose I/O."
},
{
"number": "4",
"name": "PA11",
"type": "bidirectional",
"description": "PIO port A line 11, with ADC ADTRG as peripheral B function."
},
{
"number": "5",
"name": "PA12",
"type": "bidirectional",
"description": "PIO port A line 12, general-purpose I/O."
},
{
"number": "6",
"name": "PA13",
"type": "bidirectional",
"description": "PIO port A line 13, general-purpose I/O."
},
{
"number": "7",
"name": "PA14",
"type": "bidirectional",
"description": "PIO port A line 14, with SSC TK as peripheral B function."
},
{
"number": "8",
"name": "PA15",
"type": "bidirectional",
"description": "PIO port A line 15, with SSC TF as peripheral B function."
},
{
"number": "9",
"name": "PA17",
"type": "bidirectional",
"description": "PIO port A line 17, with TWI0 TWD0 as peripheral A function."
},
{
"number": "10",
"name": "VDDCORE",
"type": "power_in",
"description": "Core supply powering the core, embedded memories and peripherals, 1.62V to 1.95V."
},
{
"number": "11",
"name": "VDDIO",
"type": "power_in",
"description": "Peripheral I/O lines supply, 1.62V to 3.6V, must be higher than or equal to VDDCORE."
},
{
"number": "12",
"name": "GND",
"type": "power_in",
"description": "Ground common to VDDCORE and VDDIO supplies."
},
{
"number": "13",
"name": "PA0",
"type": "bidirectional",
"description": "PIO port A line 0, general-purpose I/O."
},
{
"number": "14",
"name": "PA1",
"type": "bidirectional",
"description": "PIO port A line 1, general-purpose I/O."
},
{
"number": "15",
"name": "PA5",
"type": "bidirectional",
"description": "PIO port A line 5, with TC0 TIOA2 as peripheral A function."
},
{
"number": "16",
"name": "PA7",
"type": "bidirectional",
"description": "PIO port A line 7, with TC0 TCLK2 as peripheral A function."
},
{
"number": "17",
"name": "PA8",
"type": "bidirectional",
"description": "PIO port A line 8, with UART URXD as peripheral A function."
},
{
"number": "18",
"name": "PB28",
"type": "bidirectional",
"description": "PIO port B line 28, general-purpose I/O."
},
{
"number": "19",
"name": "PB29",
"type": "bidirectional",
"description": "PIO port B line 29, general-purpose I/O."
},
{
"number": "20",
"name": "PB30",
"type": "bidirectional",
"description": "PIO port B line 30, general-purpose I/O."
},
{
"number": "21",
"name": "PB31",
"type": "bidirectional",
"description": "PIO port B line 31, general-purpose I/O."
},
{
"number": "22",
"name": "GNDPLL",
"type": "power_in",
"description": "Separate ground pin 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": "3-20 MHz crystal oscillator output."
},
{
"number": "25",
"name": "XIN",
"type": "input",
"description": "3-20 MHz crystal oscillator input."
},
{
"number": "26",
"name": "DHSDP",
"type": "bidirectional",
"description": "USB high-speed differential data line D+ of the UTMI+ port."
},
{
"number": "27",
"name": "DHSDM",
"type": "bidirectional",
"description": "USB high-speed differential data line D- of the UTMI+ port."
},
{
"number": "28",
"name": "VBUS",
"type": "power_in",
"description": "USB VBus bus power measurement input."
},
{
"number": "29",
"name": "VBG",
"type": "passive",
"description": "Bias/band-gap pin of the USB transceiver, listed in the pinout without further description."
},
{
"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 pin for the VDDUTMI supply."
},
{
"number": "34",
"name": "VDDCORE",
"type": "power_in",
"description": "Core supply powering the core, embedded memories and peripherals, 1.62V to 1.95V."
},
{
"number": "35",
"name": "JTAGSEL",
"type": "input",
"description": "JTAG selection input, active high; SW-DP or JTAG-DP mode is selected when low, and a chip reset is needed after changing it."
},
{
"number": "36",
"name": "XIN32",
"type": "input",
"description": "32.768 kHz crystal oscillator input, or external clock input in bypass mode; leave unconnected if the crystal is not used."
},
{
"number": "37",
"name": "XOUT32",
"type": "output",
"description": "32.768 kHz crystal oscillator output; leave unconnected if the crystal is not used."
},
{
"number": "38",
"name": "TST",
"type": "input",
"description": "Test select input with permanent ~15 kOhm pull-down; low at power-up gives normal operation, high gives test or FFPI mode."
},
{
"number": "39",
"name": "VDDBU",
"type": "power_in",
"description": "Powers the slow clock oscillator and part of the system controller, 1.62V to 3.6V, supplied before or with VDDIO and VDDCORE."
},
{
"number": "40",
"name": "FWUP",
"type": "input",
"description": "Wake-up input (renamed from WAKEUP); must be high with JTAGSEL during boundary scan."
},
{
"number": "41",
"name": "GND",
"type": "power_in",
"description": "Ground common to VDDCORE and VDDIO supplies."
},
{
"number": "42",
"name": "VDDOUT",
"type": "power_out",
"description": "Output of the internal 1.8V voltage regulator."
},
{
"number": "43",
"name": "VDDIN",
"type": "power_in",
"description": "Powers the voltage regulator input, shared with the ADC and DAC."
},
{
"number": "44",
"name": "GND",
"type": "power_in",
"description": "Ground common to VDDCORE and VDDIO supplies."
},
{
"number": "45",
"name": "VDDCORE",
"type": "power_in",
"description": "Core supply powering the core, embedded memories and peripherals, 1.62V to 1.95V."
},
{
"number": "46",
"name": "PB27",
"type": "bidirectional",
"description": "PIO port B line 27, with TC0 TIOB0 as peripheral B function."
},
{
"number": "47",
"name": "NRST",
"type": "bidirectional",
"description": "Microcontroller reset, active low input/output."
},
{
"number": "48",
"name": "PA18",
"type": "bidirectional",
"description": "PIO port A line 18, with TWI0 TWCK0 as peripheral A function."
},
{
"number": "49",
"name": "PA19",
"type": "bidirectional",
"description": "PIO port A line 19, with HSMCI MCCK as peripheral A function."
},
{
"number": "50",
"name": "PA20",
"type": "bidirectional",
"description": "PIO port A line 20, with HSMCI MCCDA as peripheral A function."
},
{
"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 pin for the VDDANA supply."
},
{
"number": "53",
"name": "ADVREF",
"type": "input",
"description": "ADC reference voltage input."
},
{
"number": "54",
"name": "PB15",
"type": "bidirectional",
"description": "PIO port B line 15, general-purpose I/O."
},
{
"number": "55",
"name": "PB16",
"type": "bidirectional",
"description": "PIO port B line 16, with TC1 TCLK5 as peripheral A function."
},
{
"number": "56",
"name": "PA16",
"type": "bidirectional",
"description": "PIO port A line 16, with ADC input AD7 and SSC TD as peripheral B function."
},
{
"number": "57",
"name": "PA24",
"type": "bidirectional",
"description": "PIO port A line 24, with ADC input AD6 and HSMCI MCDA3 as peripheral A function."
},
{
"number": "58",
"name": "PA23",
"type": "bidirectional",
"description": "PIO port A line 23, with ADC input AD5 and HSMCI MCDA2 as peripheral A function."
},
{
"number": "59",
"name": "PA22",
"type": "bidirectional",
"description": "PIO port A line 22, with ADC input AD4 and HSMCI MCDA1 as peripheral A function."
},
{
"number": "60",
"name": "PA6",
"type": "bidirectional",
"description": "PIO port A line 6, with ADC input AD3 and TC0 TIOB2 as peripheral A function."
},
{
"number": "61",
"name": "PA4",
"type": "bidirectional",
"description": "PIO port A line 4, with ADC input AD2 and TC0 TCLK1 as peripheral A function."
},
{
"number": "62",
"name": "PA3",
"type": "bidirectional",
"description": "PIO port A line 3, with ADC input AD1/WKUP1 and TC0 TIOB1 as peripheral A function."
},
{
"number": "63",
"name": "PA2",
"type": "bidirectional",
"description": "PIO port A line 2, with ADC input AD0 and TC0 TIOA1 as peripheral A function."
},
{
"number": "64",
"name": "PB12",
"type": "bidirectional",
"description": "PIO port B line 12, with ADC input AD8 and TWI1 TWD1 as peripheral A function."
},
{
"number": "65",
"name": "PB13",
"type": "bidirectional",
"description": "PIO port B line 13, with ADC input AD9 and TWI1 TWCK1 as peripheral A function."
},
{
"number": "66",
"name": "PB17",
"type": "bidirectional",
"description": "PIO port B line 17, with ADC input AD10 and SSC RF as peripheral A function."
},
{
"number": "67",
"name": "PB18",
"type": "bidirectional",
"description": "PIO port B line 18, with ADC input AD11 and SSC RD as peripheral A function."
},
{
"number": "68",
"name": "PB19",
"type": "bidirectional",
"description": "PIO port B line 19, with ADC input AD12 and SSC RK as peripheral A function."
},
{
"number": "69",
"name": "PB20",
"type": "bidirectional",
"description": "PIO port B line 20, with ADC input AD13 and SPI0 NPCS1 as peripheral B function."
},
{
"number": "70",
"name": "PB21",
"type": "bidirectional",
"description": "PIO port B line 21, with ADC input AD14/WKUP13 and SPI0 NPCS2 as peripheral B function."
},
{
"number": "71",
"name": "VDDCORE",
"type": "power_in",
"description": "Core supply powering the core, embedded memories and peripherals, 1.62V to 1.95V."
},
{
"number": "72",
"name": "VDDIO",
"type": "power_in",
"description": "Peripheral I/O lines supply, 1.62V to 3.6V, must be higher than or equal to VDDCORE."
},
{
"number": "73",
"name": "GND",
"type": "power_in",
"description": "Ground common to VDDCORE and VDDIO supplies."
},
{
"number": "74",
"name": "PA21",
"type": "bidirectional",
"description": "PIO port A line 21, with HSMCI MCDA0 as peripheral A function."
},
{
"number": "75",
"name": "PA25",
"type": "bidirectional",
"description": "PIO port A line 25, with SPI0 MISO as peripheral A function."
},
{
"number": "76",
"name": "PA26",
"type": "bidirectional",
"description": "PIO port A line 26, with SPI0 MOSI as peripheral A function."
},
{
"number": "77",
"name": "PA27",
"type": "bidirectional",
"description": "PIO port A line 27, with SPI0 SPCK as peripheral A function."
},
{
"number": "78",
"name": "PA28",
"type": "bidirectional",
"description": "PIO port A line 28, with SPI0 NPCS0 as peripheral A function."
},
{
"number": "79",
"name": "PA29",
"type": "bidirectional",
"description": "PIO port A line 29, with SPI0 NPCS1 as peripheral A function."
},
{
"number": "80",
"name": "PB0",
"type": "bidirectional",
"description": "PIO port B line 0, with TC1 TIOA3 as peripheral B function."
},
{
"number": "81",
"name": "PB1",
"type": "bidirectional",
"description": "PIO port B line 1, with TC1 TIOB3 as peripheral B function."
},
{
"number": "82",
"name": "PB2",
"type": "bidirectional",
"description": "PIO port B line 2, with TC1 TIOA4 as peripheral B function."
},
{
"number": "83",
"name": "PB3",
"type": "bidirectional",
"description": "PIO port B line 3, with TC1 TIOB4 as peripheral B function."
},
{
"number": "84",
"name": "PB4",
"type": "bidirectional",
"description": "PIO port B line 4, with TC1 TIOA5 as peripheral B function."
},
{
"number": "85",
"name": "PB5",
"type": "bidirectional",
"description": "PIO port B line 5, with TC1 TIOB5 as peripheral B function."
},
{
"number": "86",
"name": "PB6",
"type": "bidirectional",
"description": "PIO port B line 6, general-purpose I/O."
},
{
"number": "87",
"name": "PB7",
"type": "bidirectional",
"description": "PIO port B line 7, general-purpose I/O."
},
{
"number": "88",
"name": "PB8",
"type": "bidirectional",
"description": "PIO port B line 8, general-purpose I/O."
},
{
"number": "89",
"name": "VDDCORE",
"type": "power_in",
"description": "Core supply powering the core, embedded memories and peripherals, 1.62V to 1.95V."
},
{
"number": "90",
"name": "VDDIO",
"type": "power_in",
"description": "Peripheral I/O lines supply, 1.62V to 3.6V, must be higher than or equal to VDDCORE."
},
{
"number": "91",
"name": "GND",
"type": "power_in",
"description": "Ground common to VDDCORE and VDDIO supplies."
},
{
"number": "92",
"name": "PB9",
"type": "bidirectional",
"description": "PIO port B line 9, general-purpose I/O."
},
{
"number": "93",
"name": "PB10",
"type": "bidirectional",
"description": "PIO port B line 10, with UOTGHS UOTGVBOF as peripheral A function."
},
{
"number": "94",
"name": "PB11",
"type": "bidirectional",
"description": "PIO port B line 11, with UOTGHS UOTGID as peripheral A function."
},
{
"number": "95",
"name": "PC0",
"type": "bidirectional",
"description": "PIO port C line 0, default ERASE pin that can erase Flash when set high."
},
{
"number": "96",
"name": "PB14",
"type": "bidirectional",
"description": "PIO port B line 14, general-purpose I/O."
},
{
"number": "97",
"name": "PB22",
"type": "bidirectional",
"description": "PIO port B line 22, general-purpose I/O."
},
{
"number": "98",
"name": "PB23",
"type": "bidirectional",
"description": "PIO port B line 23, with SPI0 NPCS3 as peripheral B function."
},
{
"number": "99",
"name": "PB24",
"type": "bidirectional",
"description": "PIO port B line 24, general-purpose I/O."
},
{
"number": "100",
"name": "PB25",
"type": "bidirectional",
"description": "PIO port B line 25, with TC0 TIOA0 as peripheral B function."
}
],
"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: The datasheet pinout table (Table 4-1, page 15) lists only names, with no descriptions or pin types.; The supplied pages give no description or electrical limits for VBG. I typed it as passive. Pin dire; The 'Pxx' pin multiplexing tables (Section 9.3) were not in the supplied pages. Peripheral functions",
"1/100 pins cited to the wrong page (name found elsewhere): ['24:XOUT@p15']"
],
"pages_sent": 61,
"cost_usd": 0.3785,
"at": "2026-10-31T18:47:46"
},
"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": [
{
"file": "atsam3a8ca-au.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
16,
16,
1.5
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "51720097260ffba41c3062f85f67623721102fa535901c47cb555a1f444feeb3",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "atsam3a8ca-au-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
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16,
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "5d342263ded85f95d52dc72eb639b83f12431655f41e72ef9ae2942ca431219c",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
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