component
AT42QT1481-AU
Public Made by Adomby adom
Microchip Tech Touch Sensors, TQFP-44(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "at42qt1481-au",
"version": "0.1.0",
"type": "component",
"description": "Microchip Tech Touch Sensors, TQFP-44(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"sensors",
"at42qt1481-au",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"at42qt1481-au.kicad_sym",
"at42qt1481-au.kicad_mod",
"at42qt1481-au.glb",
"at42qt1481-au.step",
"at42qt1481-au.lbr",
"docs/hero.png",
"docs/at42qt1481-au-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"at42qt1481-au-hero.glb",
"at42qt1481-au-hero.overlay.json",
"at42qt1481-au-etched.glb"
],
"component": {
"mpn": "AT42QT1481-AU",
"manufacturer": "Microchip Tech",
"package": "TQFP-44(10x10)",
"pin_count": 44,
"category": "Sensors",
"subcategory": "Touch Sensors",
"datasheet": "https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-9621-AT42-QT1481_Datasheet.pdf",
"parts": {
"symbol": "at42qt1481-au.kicad_sym",
"footprint": "at42qt1481-au.kicad_mod",
"model_3d": "at42qt1481-au-hero.glb",
"model_3d_plain": "at42qt1481-au-etched.glb",
"model_3d_step": "at42qt1481-au-etched.step",
"model_3d_step_plain": "at42qt1481-au.step",
"lbr": "at42qt1481-au.lbr"
},
"distributor_links": {
"lcsc": "C1522269",
"digikey": "AT42QT1481-AU-ND",
"mouser": "556-AT42QT1481-AU"
},
"distributor_check": {
"checked_at": "2026-10-28T15:47:37Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "AT42QT1481-AU-ND",
"status": "found"
},
"mouser": {
"pn": "556-AT42QT1481-AU",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "MOSI",
"type": "input",
"description": "SPI data input to the QT1481; leave open if unused."
},
{
"number": "2",
"name": "MISO",
"type": "output",
"description": "SPI data output from the QT1481; leave open if unused."
},
{
"number": "3",
"name": "SCK",
"type": "input",
"description": "SPI clock input; tie to Vdd if unused."
},
{
"number": "4",
"name": "RST",
"type": "input",
"description": "Active-low reset with an internal 30 k to 60 k pull-up resistor; the host should control this pin, and tie to Vdd if unused."
},
{
"number": "5",
"name": "VDD",
"type": "power_in",
"description": "Power supply input; the device operates from +4.75 to 5.25 V."
},
{
"number": "6",
"name": "VSS",
"type": "power_in",
"description": "Ground reference for the device."
},
{
"number": "7",
"name": "XT2",
"type": "output",
"description": "Connection for a 16 MHz ceramic resonator or crystal."
},
{
"number": "8",
"name": "XT1",
"type": "input",
"description": "Connection for a 16 MHz ceramic resonator or crystal."
},
{
"number": "9",
"name": "RX",
"type": "input",
"description": "UART receive data input; tie to Vdd if unused."
},
{
"number": "10",
"name": "TX",
"type": "output",
"description": "UART transmit data output with an internal 20 k to 50 k pull-up resistor; leave open if unused."
},
{
"number": "11",
"name": "WS",
"type": "input",
"description": "Wake-up from sleep input and/or sync input; tie to Vdd if unused."
},
{
"number": "12",
"name": "SMP",
"type": "bidirectional",
"description": "Sample output pin; no unused-pin connection is specified."
},
{
"number": "13",
"name": "Y3A",
"type": "bidirectional",
"description": "Y line connection; leave open if unused."
},
{
"number": "14",
"name": "Y2A",
"type": "bidirectional",
"description": "Y line connection; leave open if unused."
},
{
"number": "15",
"name": "Y1A",
"type": "bidirectional",
"description": "Y line connection; leave open if unused."
},
{
"number": "16",
"name": "Y0A",
"type": "bidirectional",
"description": "Y line connection; leave open if unused."
},
{
"number": "17",
"name": "VDD",
"type": "power_in",
"description": "Power supply input; the device operates from +4.75 to 5.25 V."
},
{
"number": "18",
"name": "VSS",
"type": "power_in",
"description": "Ground reference for the device."
},
{
"number": "19",
"name": "X0",
"type": "output",
"description": "X matrix drive line; leave open if unused."
},
{
"number": "20",
"name": "X1",
"type": "output",
"description": "X matrix drive line; leave open if unused."
},
{
"number": "21",
"name": "X2",
"type": "output",
"description": "X matrix drive line; leave open if unused."
},
{
"number": "22",
"name": "X3",
"type": "output",
"description": "X matrix drive line; leave open if unused."
},
{
"number": "23",
"name": "X4",
"type": "output",
"description": "X matrix drive line; leave open if unused."
},
{
"number": "24",
"name": "X5",
"type": "output",
"description": "X matrix drive line; leave open if unused."
},
{
"number": "25",
"name": "X6",
"type": "output",
"description": "X matrix drive line; leave open if unused."
},
{
"number": "26",
"name": "X7",
"type": "output",
"description": "X matrix drive line; leave open if unused."
},
{
"number": "27",
"name": "VDD",
"type": "power_in",
"description": "Power supply input; the device operates from +4.75 to 5.25 V."
},
{
"number": "28",
"name": "VSS",
"type": "power_in",
"description": "Ground reference for the device."
},
{
"number": "29",
"name": "VDD",
"type": "power_in",
"description": "Power supply input; the device operates from +4.75 to 5.25 V."
},
{
"number": "30",
"name": "Y0B",
"type": "bidirectional",
"description": "Y line connection; leave open if unused."
},
{
"number": "31",
"name": "Y1B",
"type": "bidirectional",
"description": "Y line connection; leave open if unused."
},
{
"number": "32",
"name": "Y2B",
"type": "bidirectional",
"description": "Y line connection; leave open if unused."
},
{
"number": "33",
"name": "Y3B",
"type": "bidirectional",
"description": "Y line connection; leave open if unused."
},
{
"number": "34",
"name": "Y4A",
"type": "bidirectional",
"description": "Y line connection; leave open if unused."
},
{
"number": "35",
"name": "Y4B",
"type": "bidirectional",
"description": "Y line connection; leave open if unused."
},
{
"number": "36",
"name": "Y5A",
"type": "bidirectional",
"description": "Y line connection; leave open if unused."
},
{
"number": "37",
"name": "Y5B",
"type": "bidirectional",
"description": "Y line connection; leave open if unused."
},
{
"number": "38",
"name": "VDD",
"type": "power_in",
"description": "Power supply input; the device operates from +4.75 to 5.25 V."
},
{
"number": "39",
"name": "VSS",
"type": "power_in",
"description": "Ground reference for the device."
},
{
"number": "40",
"name": "STATUS / DBG_DATA",
"type": "output",
"description": "Active-low status output or debug data output, with an internal 20 k to 50 k pull-up resistor; leave open if unused."
},
{
"number": "41",
"name": "DRDY",
"type": "bidirectional",
"description": "Open-drain data ready pin with an internal 20 k to 50 k pull-up resistor; it MUST be used, reads 1 when comms are ready, and needs a 100 µs grace period before checking."
},
{
"number": "42",
"name": "VREF",
"type": "power_in",
"description": "Reference pin that must be connected to Vss."
},
{
"number": "43",
"name": "S_SYNC / DBG_CLK",
"type": "output",
"description": "Scope synchronization output or debug clock output; leave open if unused."
},
{
"number": "44",
"name": "SS",
"type": "input",
"description": "SPI slave select with an internal 20 k to 50 k pull-up resistor; leave open if unused."
}
],
"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": [],
"pages_sent": 15,
"cost_usd": 0.0255,
"at": "2026-10-28T15:47:06"
},
"datasheet": {
"url": "https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-9621-AT42-QT1481_Datasheet.pdf",
"pages": 73,
"sha256": "da52e2df9b963a9f",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 44,
"described": 44,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "at42qt1481-au.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
12.0,
12.0,
1.1
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "61ecec1147f835d2c9d165c450b1c8d53e65b038f6ca1dac3066a2dfb1bbbb85",
"checked": "2026-10-28",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "at42qt1481-au-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
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12.0,
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],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "8f8c626273d4961474b4098777a399b6bbb32c0e2e2f84df5d2b4b72c00e8501",
"checked": "2026-10-28",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}