component
ATSAM4S4AA-MU
Public Made by Adomby adom
Microchip Tech Pre-ordered MCUs, QFN-48-EP(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "atsam4s4aa-mu",
"version": "0.1.0",
"type": "component",
"description": "Microchip Tech Pre-ordered MCUs, QFN-48-EP(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"embedded processors & controllers",
"atsam4s4aa-mu",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
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"README.md",
"atsam4s4aa-mu.kicad_sym",
"atsam4s4aa-mu.kicad_mod",
"atsam4s4aa-mu.glb",
"atsam4s4aa-mu.step",
"atsam4s4aa-mu.lbr",
"docs/hero.png",
"docs/atsam4s4aa-mu-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"atsam4s4aa-mu-hero.glb",
"atsam4s4aa-mu-hero.overlay.json",
"atsam4s4aa-mu-etched.glb"
],
"component": {
"mpn": "ATSAM4S4AA-MU",
"manufacturer": "Microchip Tech",
"package": "QFN-48-EP(7x7)",
"pin_count": 49,
"category": "Embedded Processors & Controllers",
"subcategory": "Pre-ordered MCUs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/d5551aa2e0d5163467403501353ff180.pdf",
"parts": {
"symbol": "atsam4s4aa-mu.kicad_sym",
"footprint": "atsam4s4aa-mu.kicad_mod",
"model_3d": "atsam4s4aa-mu-hero.glb",
"model_3d_plain": "atsam4s4aa-mu-etched.glb",
"model_3d_step": "atsam4s4aa-mu-etched.step",
"model_3d_step_plain": "atsam4s4aa-mu.step",
"lbr": "atsam4s4aa-mu.lbr"
},
"distributor_links": {
"lcsc": "C614454",
"digikey": "ATSAM4S4AA-MU-ND",
"mouser": "556-ATSAM4S4AA-MU"
},
"distributor_check": {
"checked_at": "2026-10-30T20:33:52Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "ATSAM4S4AA-MU-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "556-ATSAM4S4AA-MU",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "ADVREF",
"type": "power_in",
"description": "Reference voltage for the ADC, DAC and analog comparator."
},
{
"number": "2",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "3",
"name": "PB0/AD4",
"type": "bidirectional",
"description": "PIO line PB0 shared with ADC analog input AD4."
},
{
"number": "4",
"name": "PB1/AD5",
"type": "bidirectional",
"description": "PIO line PB1 shared with ADC analog input AD5."
},
{
"number": "5",
"name": "PB2/AD6",
"type": "bidirectional",
"description": "PIO line PB2 shared with ADC analog input AD6."
},
{
"number": "6",
"name": "PB3/AD7",
"type": "bidirectional",
"description": "PIO line PB3 shared with ADC analog input AD7."
},
{
"number": "7",
"name": "VDDIN",
"type": "power_in",
"description": "Voltage regulator input and ADC, DAC and analog comparator supply, 1.62 to 3.6 V."
},
{
"number": "8",
"name": "VDDOUT",
"type": "power_out",
"description": "Output of the internal voltage regulator."
},
{
"number": "9",
"name": "PA17/PGMD5/AD0",
"type": "bidirectional",
"description": "PIO line PA17 shared with FFPI data bit PGMD5 and ADC analog input AD0."
},
{
"number": "10",
"name": "PA18/PGMD6/AD1",
"type": "bidirectional",
"description": "PIO line PA18 shared with FFPI data bit PGMD6 and ADC analog input AD1."
},
{
"number": "11",
"name": "PA19/PGMD7/AD2",
"type": "bidirectional",
"description": "PIO line PA19 shared with FFPI data bit PGMD7 and ADC analog input AD2."
},
{
"number": "12",
"name": "PA20/AD3",
"type": "bidirectional",
"description": "PIO line PA20 shared with ADC analog input AD3."
},
{
"number": "13",
"name": "VDDIO",
"type": "power_in",
"description": "Peripheral I/O lines supply, 1.62 to 3.6 V."
},
{
"number": "14",
"name": "PA16/PGMD4",
"type": "bidirectional",
"description": "PIO line PA16 shared with FFPI data bit PGMD4."
},
{
"number": "15",
"name": "PA15/PGMD3",
"type": "bidirectional",
"description": "PIO line PA15 shared with FFPI data bit PGMD3."
},
{
"number": "16",
"name": "PA14/PGMD2",
"type": "bidirectional",
"description": "PIO line PA14 shared with FFPI data bit PGMD2."
},
{
"number": "17",
"name": "PA13/PGMD1",
"type": "bidirectional",
"description": "PIO line PA13 shared with FFPI data bit PGMD1."
},
{
"number": "18",
"name": "VDDCORE",
"type": "power_in",
"description": "Core, first flash rail, embedded memories and peripherals supply, 1.08 to 1.32 V."
},
{
"number": "19",
"name": "PA12/PGMD0",
"type": "bidirectional",
"description": "PIO line PA12 shared with FFPI data bit PGMD0."
},
{
"number": "20",
"name": "PA11/PGMM3",
"type": "bidirectional",
"description": "PIO line PA11 shared with FFPI programming mode input PGMM3."
},
{
"number": "21",
"name": "PA10/PGMM2",
"type": "bidirectional",
"description": "PIO line PA10 shared with FFPI programming mode input PGMM2."
},
{
"number": "22",
"name": "PA9/PGMM1",
"type": "bidirectional",
"description": "PIO line PA9 shared with FFPI programming mode input PGMM1."
},
{
"number": "23",
"name": "PA8/XOUT32/PGMM0",
"type": "bidirectional",
"description": "PIO line PA8 shared with 32 kHz crystal output XOUT32 and FFPI programming mode input PGMM0."
},
{
"number": "24",
"name": "PA7/XIN32/PGMNVALID",
"type": "bidirectional",
"description": "PIO line PA7 shared with 32 kHz crystal input XIN32 and FFPI data direction output PGMNVALID."
},
{
"number": "25",
"name": "TDI/PB4",
"type": "bidirectional",
"description": "JTAG test data input shared with PIO line PB4; voltage must stay within -0.1 V to VDDIO+0.4 V per errata."
},
{
"number": "26",
"name": "PA6/PGMNOE",
"type": "bidirectional",
"description": "PIO line PA6 shared with FFPI programming read input PGMNOE."
},
{
"number": "27",
"name": "PA5/PGMRDY",
"type": "bidirectional",
"description": "PIO line PA5 shared with FFPI programming ready output PGMRDY."
},
{
"number": "28",
"name": "PA4/PGMNCMD",
"type": "bidirectional",
"description": "PIO line PA4 shared with FFPI programming command input PGMNCMD."
},
{
"number": "29",
"name": "NRST",
"type": "bidirectional",
"description": "Active-low microcontroller reset, input/output."
},
{
"number": "30",
"name": "TST",
"type": "input",
"description": "Test select; low at power-up gives normal operation, high gives test or FFPI mode, with an internal pull-down of about 15 kΩ."
},
{
"number": "31",
"name": "PA3",
"type": "bidirectional",
"description": "PIO line PA3."
},
{
"number": "32",
"name": "PA2/PGMEN2",
"type": "bidirectional",
"description": "PIO line PA2 shared with FFPI programming enable input PGMEN2."
},
{
"number": "33",
"name": "VDDIO",
"type": "power_in",
"description": "Peripheral I/O lines supply, 1.62 to 3.6 V."
},
{
"number": "34",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "35",
"name": "PA1/PGMEN1",
"type": "bidirectional",
"description": "PIO line PA1 shared with FFPI programming enable input PGMEN1."
},
{
"number": "36",
"name": "PA0/PGMEN0",
"type": "bidirectional",
"description": "PIO line PA0 shared with FFPI programming enable input PGMEN0."
},
{
"number": "37",
"name": "TDO/TRACESWO/PB5",
"type": "output",
"description": "JTAG test data out or asynchronous trace output TRACESWO (SW-DP only), shared with PIO line PB5."
},
{
"number": "38",
"name": "JTAGSEL",
"type": "input",
"description": "Active-high JTAG selection input; a chip reset is required after it changes."
},
{
"number": "39",
"name": "TMS/SWDIO/PB6",
"type": "bidirectional",
"description": "JTAG test mode select or serial wire data I/O, shared with PIO line PB6."
},
{
"number": "40",
"name": "TCK/SWCLK/PB7",
"type": "input",
"description": "JTAG test clock or serial wire clock, shared with PIO line PB7."
},
{
"number": "41",
"name": "VDDCORE",
"type": "power_in",
"description": "Core, first flash rail, embedded memories and peripherals supply, 1.08 to 1.32 V."
},
{
"number": "42",
"name": "ERASE/PB12",
"type": "bidirectional",
"description": "Flash erase input shared with PIO line PB12."
},
{
"number": "43",
"name": "DDM/PB10",
"type": "bidirectional",
"description": "USB full-speed data minus shared with PIO line PB10."
},
{
"number": "44",
"name": "DDP/PB11",
"type": "bidirectional",
"description": "USB full-speed data plus shared with PIO line PB11."
},
{
"number": "45",
"name": "XOUT/PB8",
"type": "bidirectional",
"description": "3 to 20 MHz oscillator output shared with PIO line PB8."
},
{
"number": "46",
"name": "XIN/PB9/PGMCK",
"type": "bidirectional",
"description": "3 to 20 MHz oscillator input shared with PIO line PB9 and FFPI programming clock PGMCK."
},
{
"number": "47",
"name": "VDDIO",
"type": "power_in",
"description": "Peripheral I/O lines supply, 1.62 to 3.6 V."
},
{
"number": "48",
"name": "VDDPLL",
"type": "power_in",
"description": "Supply for PLLA, PLLB, fast RC and 3 to 20 MHz oscillator, 1.08 to 1.32 V."
},
{
"number": "49",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"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 says the QFN bottom pad must be connected to ground but gives it no pin number, so no ; The datasheet does not describe VDDOUT or give its type. 'power_out' and the description are inferre; The pin-type classes for TMS/SWDIO (bidirectional), the debug pins and the oscillator PIO pins were ",
"6/49 pins cited to the wrong page (name found elsewhere): ['29:NRST@p269', '30:TST@p270', '37:TDO/TRACESWO/PB5@p269', '38:JTAGSEL@p269']"
],
"pages_sent": 82,
"cost_usd": 0.7545,
"at": "2026-10-30T20:33:44"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/d5551aa2e0d5163467403501353ff180.pdf",
"pages": 1269,
"sha256": "64941c58dfa3899c",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 49,
"described": 49,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "atsam4s4aa-mu.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
7.0,
7.0,
0.77
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "f2b38b0b4bf967c77e683e8d4599608b9f0503055ec535b93c4ebb5d0163e916",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "atsam4s4aa-mu-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
7.0,
7.0,
0.77
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "1264026a7c455653e40b42e6983b196ed118c69ff7248aa6c6f7d6f6af819354",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}