AT42QT2100-MUR

{
  "schema_version": 1,
  "type": "component",
  "slug": "at42qt2100-mur",
  "title": "AT42QT2100-MUR",
  "brief": "Microchip Tech Pre-ordered MCUs, VQFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.1",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "embedded processors & controllers",
    "at42qt2100-mur",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "AT42QT2100-MUR",
    "manufacturer": "Microchip Tech",
    "package": "VQFN-32-EP(5x5)",
    "pin_count": 33,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Pre-ordered MCUs",
    "datasheet": "https://ww1.microchip.com/downloads/en/DeviceDoc/AT42QT2100_E_Level0%2013WW04.pdf",
    "parts": {
      "symbol": "at42qt2100-mur.kicad_sym",
      "footprint": "at42qt2100-mur.kicad_mod",
      "model_3d": "at42qt2100-mur-hero.glb",
      "model_3d_plain": "at42qt2100-mur.glb",
      "model_3d_step": "at42qt2100-mur-etched.step",
      "model_3d_step_plain": "at42qt2100-mur.step",
      "lbr": "at42qt2100-mur.lbr"
    },
    "distributor_links": {
      "lcsc": "C618029",
      "digikey": "AT42QT2100-MURTR-ND",
      "mouser": "556-AT42QT2100-MUR"
    },
    "distributor_check": {
      "checked_at": "2026-11-05T18:39:52Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "AT42QT2100-MURTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "556-AT42QT2100-MUR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SNSKB2",
        "type": "bidirectional",
        "description": "Sense pin for the B group; connect to any CsB + key, or leave open if unused."
      },
      {
        "number": "2",
        "name": "SNSB3",
        "type": "bidirectional",
        "description": "Sense pin for the B group; connect to CsB3, or leave open if unused."
      },
      {
        "number": "3",
        "name": "SNSKB3",
        "type": "bidirectional",
        "description": "Sense pin for the B group; connect to any CsB + key, or leave open if unused."
      },
      {
        "number": "4",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply; the device operates from 2.0 V to 5.5 V."
      },
      {
        "number": "5",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "6",
        "name": "SNSKB4",
        "type": "bidirectional",
        "description": "Sense pin for the B group; connect to any CsB + key, or leave open if unused."
      },
      {
        "number": "7",
        "name": "SNSB4",
        "type": "bidirectional",
        "description": "Sense pin for the B group; connect to CsB4, or leave open if unused."
      },
      {
        "number": "8",
        "name": "SNSB5",
        "type": "bidirectional",
        "description": "Sense pin for the B group; connect to CsB5, or leave open if unused."
      },
      {
        "number": "9",
        "name": "SNSKB5",
        "type": "bidirectional",
        "description": "Sense pin for the B group; connect to any CsB + key, or leave open if unused."
      },
      {
        "number": "10",
        "name": "SNSKB6",
        "type": "bidirectional",
        "description": "Sense pin for the B group; connect to any CsB + key, or leave open if unused."
      },
      {
        "number": "11",
        "name": "SNSKB7",
        "type": "bidirectional",
        "description": "Sense pin for the B group; connect to any CsB + key, or leave open if unused."
      },
      {
        "number": "12",
        "name": "SNSB6",
        "type": "bidirectional",
        "description": "Sense pin for the B group; connect to CsB6, or leave open if unused."
      },
      {
        "number": "13",
        "name": "SNSB7",
        "type": "bidirectional",
        "description": "Sense pin for the B group; connect to CsB7, or leave open if unused."
      },
      {
        "number": "14",
        "name": "SS",
        "type": "input",
        "description": "SPI slave select, active low."
      },
      {
        "number": "15",
        "name": "MOSI",
        "type": "input",
        "description": "SPI master out / slave in data input."
      },
      {
        "number": "16",
        "name": "MISO",
        "type": "tri_state",
        "description": "SPI master in / serial out data output; this CMOS output can float during Reset, Sleep or LP modes."
      },
      {
        "number": "17",
        "name": "SCK",
        "type": "input",
        "description": "SPI clock input."
      },
      {
        "number": "18",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply; the device operates from 2.0 V to 5.5 V."
      },
      {
        "number": "19",
        "name": "DRDY",
        "type": "tri_state",
        "description": "SPI data-ready handshake line; this CMOS output can float during Reset, Sleep or LP modes, and may need a pull-down resistor; leave open if unused."
      },
      {
        "number": "20",
        "name": "CHANGE",
        "type": "tri_state",
        "description": "State change notification output; this CMOS output can float during Reset, Sleep or LP modes, and may need a pull-down resistor; leave open if unused."
      },
      {
        "number": "21",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "22",
        "name": "SPREAD",
        "type": "output",
        "description": "Spread-spectrum enable: connect to Vdd (high) to enable or to Vss (low) to disable; CMOS open-drain output with pull-up to Vdd."
      },
      {
        "number": "23",
        "name": "SNSA1",
        "type": "bidirectional",
        "description": "Sense pin for the A group; connect to CsA1, or leave open if unused."
      },
      {
        "number": "24",
        "name": "SNSKA1",
        "type": "bidirectional",
        "description": "Sense pin for the A group; connect to any CsA + slider/wheel, or leave open if unused."
      },
      {
        "number": "25",
        "name": "SNSA2",
        "type": "bidirectional",
        "description": "Sense pin for the A group; connect to CsA2, or leave open if unused."
      },
      {
        "number": "26",
        "name": "SNSKA2",
        "type": "bidirectional",
        "description": "Sense pin for the A group; connect to any CsA + slider/wheel, or leave open if unused."
      },
      {
        "number": "27",
        "name": "SNSA3",
        "type": "bidirectional",
        "description": "Sense pin for the A group; connect to CsA3, or leave open if unused."
      },
      {
        "number": "28",
        "name": "SNSKA3",
        "type": "bidirectional",
        "description": "Sense pin for the A group; connect to any CsA + slider/wheel, or leave open if unused."
      },
      {
        "number": "29",
        "name": "RESET",
        "type": "input",
        "description": "Reset, active low; connect to Vdd via a resistor."
      },
      {
        "number": "30",
        "name": "SNSB1",
        "type": "bidirectional",
        "description": "Sense pin for the B group; connect to CsB1, or leave open if unused."
      },
      {
        "number": "31",
        "name": "SNSKB1",
        "type": "bidirectional",
        "description": "Sense pin for the B group; connect to any CsB + key, or leave open if unused."
      },
      {
        "number": "32",
        "name": "SNSB2",
        "type": "bidirectional",
        "description": "Sense pin for the B group; connect to CsB2, or 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 text gives no exposed-pad (EP) terminal designation or connection instruction for the ; SPREAD is a CMOS open-drain output (pull-up to Vdd), but the allowed type set has no open-drain clas; MISO, DRDY and CHANGE are marked OF (output that can float during Reset, Sleep or LP modes) and are ",
          "exposed pad 33 added from the footprint"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0559,
        "at": "2026-11-05T18:39:12"
      },
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        "url": "https://ww1.microchip.com/downloads/en/DeviceDoc/AT42QT2100_E_Level0%2013WW04.pdf",
        "pages": 44,
        "sha256": "1b9e3b9c9558e201",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 33,
        "described": 33,
        "cites_pages": true,
        "refuses_to_fabricate": true
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    },
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      "Package": "VQFN-32-EP(5x5)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "33"
    },
    "appearance": {
      "housing": {
        "quote": "The Cs capacitors can be virtually any plastic film or low to medium-K ceramic capacitor. Acceptable capacitor types for most uses include PPS film, polypropylene film, and NP0 and X7R ceramics. Lower",
        "page": 9,
        "doc": "ds.pdf",
        "material": "PPS"
      },
      "contacts": {
        "quote": "AT42QT2100-MUR 32-pin 5 × 5 mm MLF RoHS compliant IC AT42QT2100-AU 32-pin 7 × 7 mm TQFP RoHS compliant IC",
        "page": 40,
        "doc": "ds.pdf",
        "plating": "gold"
      },
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        {
          "name": "Supply voltage (absolute maximum)",
          "symbol": "VDD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 30,
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        },
        {
          "name": "Max continuous pin current, any control or drive pin",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "",
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        },
        {
          "name": "Voltage forced onto any pin",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Printed maximum is (Vdd + 0.3) V",
          "source_page": 30,
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        },
        {
          "name": "Operating temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
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        {
          "name": "Storage temperature",
          "symbol": "",
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          "unit": "°C",
          "min": -50,
          "typ": null,
          "max": 125,
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        {
          "name": "Supply voltage (recommended operating)",
          "symbol": "VDD",
          "kind": "recommended_operating",
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          "min": 2,
          "typ": null,
          "max": 5.5,
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        },
        {
          "name": "Short-term supply ripple + noise",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "mV/s",
          "min": -20,
          "typ": null,
          "max": 20,
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          "source_page": 30,
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        },
        {
          "name": "Long-term supply stability",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "mV",
          "min": -100,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 30,
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        },
        {
          "name": "Cs range, keys",
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          "min": 1,
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        {
          "name": "Cs range, slider/wheel",
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          "name": "Cx range",
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          "unit": "pF",
          "min": 0,
          "typ": null,
          "max": 50,
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        },
        {
          "name": "Low input logic level",
          "symbol": "Vil",
          "kind": "electrical",
          "unit": "× Vdd",
          "min": 0,
          "typ": null,
          "max": 0.3,
          "conditions": "Vdd = 5.0V, Cs keys = 4.7 nF, Cs slider/wheel = 15 nF",
          "source_page": 31,
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        },
        {
          "name": "High input logic level",
          "symbol": "Vhl",
          "kind": "electrical",
          "unit": "× Vdd",
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          "typ": null,
          "max": null,
          "conditions": "Vdd = 5.0V, Cs keys = 4.7 nF, Cs slider/wheel = 15 nF",
          "source_page": 31,
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        {
          "name": "Low output voltage",
          "symbol": "Vol",
          "kind": "electrical",
          "unit": "V",
          "min": null,
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          "max": 0.5,
          "conditions": "7 mA sink; Vdd = 5.0V, Cs keys = 4.7 nF, Cs slider/wheel = 15 nF",
          "source_page": 31,
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        {
          "name": "High output voltage",
          "symbol": "Voh",
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          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "2.5 mA source; min printed as Vdd – 0.5",
          "source_page": 31,
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        {
          "name": "Input leakage current",
          "symbol": "Iil",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "Vdd = 5.0V, Cs keys = 4.7 nF, Cs slider/wheel = 15 nF",
          "source_page": 31,
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        },
        {
          "name": "External reset low pulse width",
          "symbol": "Trst",
          "kind": "timing",
          "unit": "µs",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "Vdd = 5.0V, Cs keys = 4.7 nF, Cs slider/wheel = 15 nF",
          "source_page": 31,
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        {
          "name": "Start-up to SPI time",
          "symbol": "Tsu",
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          "min": null,
          "typ": 50,
          "max": 60,
          "conditions": "From cold start; Vdd = 5.0V, Cs keys = 4.7 nF, Cs slider/wheel = 15 nF",
          "source_page": 31,
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        {
          "name": "Recalibration time",
          "symbol": "Trc",
          "kind": "timing",
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          "min": null,
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          "max": null,
          "conditions": "Depends on ground loading of electrodes and Cs selection",
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          "name": "Burst center frequency",
          "symbol": "Fc",
          "kind": "timing",
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          "min": null,
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          "max": null,
          "conditions": "Spread spectrum disabled",
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        },
        {
          "name": "Burst center frequency",
          "symbol": "Fc",
          "kind": "timing",
          "unit": "kHz",
          "min": null,
          "typ": 80,
          "max": null,
          "conditions": "Spread spectrum enabled",
          "source_page": 31,
          "source": "datasheet"
        },
        {
          "name": "Burst modulation, percent",
          "symbol": "Fm",
          "kind": "timing",
          "unit": "%",
          "min": null,
          "typ": 15,
          "max": null,
          "conditions": "Total deviation",
          "source_page": 31,
          "source": "datasheet"
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        {
          "name": "Sample pulse duration",
          "symbol": "Tpc",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": 2.66,
          "max": null,
          "conditions": "Spread spectrum disabled",
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        },
        {
          "name": "Sample pulse duration",
          "symbol": "Tpc",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": 5.85,
          "max": null,
          "conditions": "Spread spectrum enabled",
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        {
          "name": "Acquire burst duration",
          "symbol": "Tbd",
          "kind": "timing",
          "unit": "ms",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "Spread spectrum disabled (total for all 3 acquire burst groups)",
          "source_page": 31,
          "source": "datasheet"
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          "name": "Acquire burst duration",
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          "max": null,
          "conditions": "Spread spectrum enabled (total for all 3 acquire burst groups)",
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        {
          "name": "Response time – Free Run mode, DI 6 samples",
          "symbol": "Tdf6",
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          "min": null,
          "typ": 120,
          "max": null,
          "conditions": "Free Run mode, DI 6 samples; spread spectrum disabled",
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        {
          "name": "Response time – Free Run mode, DI 2 samples",
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          "typ": 40,
          "max": null,
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          "source": "datasheet"
        },
        {
          "name": "Response time – LP mode",
          "symbol": "Tdl",
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          "max": null,
          "conditions": "LP Mode 2, DI = six counts",
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        },
        {
          "name": "Release time – all modes",
          "symbol": "Tdr",
          "kind": "timing",
          "unit": "ms",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "End of touch",
          "source_page": 31,
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        },
        {
          "name": "Acquisition resolution",
          "symbol": "Ar",
          "kind": "electrical",
          "unit": "bits",
          "min": null,
          "typ": 14,
          "max": null,
          "conditions": "Vdd = 5.0V, Cs keys = 4.7 nF, Cs slider/wheel = 15 nF",
          "source_page": 31,
          "source": "datasheet"
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      ]
    }
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  "visibility": "public",
  "description": "Microchip Tech Pre-ordered MCUs, VQFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "org": "adom"
}