component
AT42QT1244-MU
Public Made by Adomby adom
Microchip Tech Touch Sensors, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "at42qt1244-mu",
"version": "0.1.0",
"type": "component",
"description": "Microchip Tech Touch Sensors, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"sensors",
"at42qt1244-mu",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"at42qt1244-mu.kicad_sym",
"at42qt1244-mu.kicad_mod",
"at42qt1244-mu.glb",
"at42qt1244-mu.step",
"at42qt1244-mu.lbr",
"docs/hero.png",
"docs/at42qt1244-mu-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"at42qt1244-mu-hero.glb",
"at42qt1244-mu-hero.overlay.json",
"at42qt1244-mu-etched.glb"
],
"component": {
"mpn": "AT42QT1244-MU",
"manufacturer": "Microchip Tech",
"package": "QFN-32-EP(5x5)",
"pin_count": 33,
"category": "Sensors",
"subcategory": "Touch Sensors",
"datasheet": "https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-9631-AT42-QT1244_Datasheet.pdf",
"parts": {
"symbol": "at42qt1244-mu.kicad_sym",
"footprint": "at42qt1244-mu.kicad_mod",
"model_3d": "at42qt1244-mu-hero.glb",
"model_3d_plain": "at42qt1244-mu-etched.glb",
"model_3d_step": "at42qt1244-mu-etched.step",
"model_3d_step_plain": "at42qt1244-mu.step",
"lbr": "at42qt1244-mu.lbr"
},
"distributor_links": {
"lcsc": "C1522270",
"digikey": "AT42QT1244-MU-ND",
"mouser": "556-AT42QT1244-MU"
},
"distributor_check": {
"checked_at": "2026-10-29T01:54:31Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "AT42QT1244-MU-ND",
"status": "found"
},
"mouser": {
"pn": "556-AT42QT1244-MU",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "M_SYNC",
"type": "input",
"description": "Mains sync input; if unused, connect to Vdd."
},
{
"number": "2",
"name": "CHANGE",
"type": "output",
"description": "State change notification output, active low, with an internal 20 k - 50 k pull-up resistor; leave open if unused."
},
{
"number": "3",
"name": "VSS",
"type": "power_in",
"description": "Ground."
},
{
"number": "4",
"name": "VDD",
"type": "power_in",
"description": "Power supply; the regulator output capacitor should be kept close to pins 4 and 6."
},
{
"number": "5",
"name": "VSS",
"type": "power_in",
"description": "Ground."
},
{
"number": "6",
"name": "VDD",
"type": "power_in",
"description": "Power supply; the regulator output capacitor should be kept close to pins 4 and 6."
},
{
"number": "7",
"name": "X6",
"type": "output",
"description": "X matrix drive line; leave open if unused."
},
{
"number": "8",
"name": "X7",
"type": "output",
"description": "X matrix drive line; leave open if unused."
},
{
"number": "9",
"name": "DBG_CLK",
"type": "output",
"description": "Debug clock output; leave open if unused."
},
{
"number": "10",
"name": "VREF",
"type": "power_in",
"description": "Reference input; connect to Vss."
},
{
"number": "11",
"name": "S_SYNC/DBG_DATA",
"type": "output",
"description": "Oscilloscope sync / debug data output; leave open if unused."
},
{
"number": "12",
"name": "X0",
"type": "output",
"description": "X matrix drive line; leave open if unused."
},
{
"number": "13",
"name": "X1",
"type": "output",
"description": "X matrix drive line; leave open if unused."
},
{
"number": "14",
"name": "X2",
"type": "output",
"description": "X matrix drive line; leave open if unused."
},
{
"number": "15",
"name": "X3",
"type": "output",
"description": "X matrix drive line; leave open if unused."
},
{
"number": "16",
"name": "X4",
"type": "output",
"description": "X matrix drive line; leave open if unused."
},
{
"number": "17",
"name": "X5",
"type": "output",
"description": "X matrix drive line; leave open if unused."
},
{
"number": "18",
"name": "VDD",
"type": "power_in",
"description": "Power supply; a 100 nF capacitor should be placed close to this pin."
},
{
"number": "19",
"name": "A1",
"type": "input",
"description": "I2C address bit 1, read after reset."
},
{
"number": "20",
"name": "VDD",
"type": "power_in",
"description": "Power supply."
},
{
"number": "21",
"name": "VSS",
"type": "power_in",
"description": "Ground."
},
{
"number": "22",
"name": "A0",
"type": "input",
"description": "I2C address bit 0, read after reset."
},
{
"number": "23",
"name": "Y0B",
"type": "bidirectional",
"description": "Y line connection; leave open if unused."
},
{
"number": "24",
"name": "Y1B",
"type": "bidirectional",
"description": "Y line connection; leave open if unused."
},
{
"number": "25",
"name": "Y2B",
"type": "bidirectional",
"description": "Y line connection; leave open if unused."
},
{
"number": "26",
"name": "SMP",
"type": "output",
"description": "Sample output."
},
{
"number": "27",
"name": "SDA",
"type": "output",
"description": "Serial data line (open-drain per datasheet)."
},
{
"number": "28",
"name": "SCL",
"type": "output",
"description": "Serial clock line (open-drain per datasheet)."
},
{
"number": "29",
"name": "RST",
"type": "input",
"description": "Active-low reset with an internal 30 k - 60 k pull-up resistor; should be controlled by the host, and may be left open or connected to Vdd."
},
{
"number": "30",
"name": "Y0A",
"type": "bidirectional",
"description": "Y line connection; leave open if unused."
},
{
"number": "31",
"name": "Y1A",
"type": "bidirectional",
"description": "Y line connection; leave open if unused."
},
{
"number": "32",
"name": "Y2A",
"type": "bidirectional",
"description": "Y line connection; leave open if unused."
},
{
"number": "33",
"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-haiku-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 lists the AT42QT1244-MU as a 32-pad 5 × 5 mm QFN, but the extracted text does not ment; The pinout diagram text in the extract is garbled, so pin numbers were taken from the clear Table 1-; The datasheet labels CHANGE, SDA and SCL as open-drain (OD). The KiCad class set has no open-drain t",
"exposed pad 33 added from the footprint"
],
"pages_sent": 13,
"cost_usd": 0.0578,
"at": "2026-10-29T01:54:09"
},
"datasheet": {
"url": "https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-9631-AT42-QT1244_Datasheet.pdf",
"pages": 61,
"sha256": "c5b64a3fb868a3eb",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "at42qt1244-mu.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5.0,
5.0,
0.875
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
"checked": "2026-10-29",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "at42qt1244-mu-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5.0,
5.0,
0.875
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "584eaef09ad272f721cfdb7d79cbe3f75dd1d347e439d9374162b8c679270a3e",
"checked": "2026-10-29",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}