CM2249-QFPTR

{
  "schema_version": 1,
  "type": "component",
  "slug": "cm2249-qfptr",
  "title": "CM2249-QFPTR",
  "brief": "CIMO Analog To Digital Converters (ADC), LQFP-80(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",
    "data acquisition",
    "cm2249-qfptr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CM2249-QFPTR",
    "manufacturer": "CIMO",
    "package": "LQFP-80(14x14)",
    "pin_count": 80,
    "category": "Data Acquisition",
    "subcategory": "Analog To Digital Converters (ADC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8618864843482800128",
    "parts": {
      "symbol": "cm2249-qfptr.kicad_sym",
      "footprint": "cm2249-qfptr.kicad_mod",
      "model_3d": "cm2249-qfptr-hero.glb",
      "model_3d_plain": "cm2249-qfptr-etched.glb",
      "model_3d_step": "cm2249-qfptr-etched.step",
      "model_3d_step_plain": "cm2249-qfptr.step",
      "lbr": "cm2249-qfptr.lbr"
    },
    "distributor_links": {
      "lcsc": "C20606819"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T09:40:31Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "V4BGND",
        "type": "power_in",
        "description": "Analog input ground return for channel 4 input V4B (ADC B)."
      },
      {
        "number": "2",
        "name": "V4B",
        "type": "passive",
        "description": "Analog input for channel 4 on ADC B; input is bipolar ±10 V, ±5 V or ±2.5 V with 1 MΩ input impedance and clamp protection to ±19.5 V."
      },
      {
        "number": "3",
        "name": "V5BGND",
        "type": "power_in",
        "description": "Analog input ground return for channel 5 input V5B (ADC B)."
      },
      {
        "number": "4",
        "name": "V5B",
        "type": "passive",
        "description": "Analog input for channel 5 on ADC B; input is bipolar ±10 V, ±5 V or ±2.5 V with 1 MΩ input impedance and clamp protection to ±19.5 V."
      },
      {
        "number": "5",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog power ground."
      },
      {
        "number": "6",
        "name": "VCC",
        "type": "power_in",
        "description": "Analog supply 4.75 V to 5.25 V for the front-end amplifiers and ADC core, decoupled to AGND with 0.1 µF in parallel with 10 µF."
      },
      {
        "number": "7",
        "name": "V6B",
        "type": "passive",
        "description": "Analog input for channel 6 on ADC B; input is bipolar ±10 V, ±5 V or ±2.5 V with 1 MΩ input impedance and clamp protection to ±19.5 V."
      },
      {
        "number": "8",
        "name": "V6BGND",
        "type": "power_in",
        "description": "Analog input ground return for channel 6 input V6B (ADC B)."
      },
      {
        "number": "9",
        "name": "V7B",
        "type": "passive",
        "description": "Analog input for channel 7 on ADC B; input is bipolar ±10 V, ±5 V or ±2.5 V with 1 MΩ input impedance and clamp protection to ±19.5 V."
      },
      {
        "number": "10",
        "name": "V7BGND",
        "type": "power_in",
        "description": "Analog input ground return for channel 7 input V7B (ADC B)."
      },
      {
        "number": "11",
        "name": "V7AGND",
        "type": "power_in",
        "description": "Analog input ground return for channel 7 input V7A (ADC A)."
      },
      {
        "number": "12",
        "name": "V7A",
        "type": "passive",
        "description": "Analog input for channel 7 on ADC A; input is bipolar ±10 V, ±5 V or ±2.5 V with 1 MΩ input impedance and clamp protection to ±19.5 V."
      },
      {
        "number": "13",
        "name": "V6AGND",
        "type": "power_in",
        "description": "Analog input ground return for channel 6 input V6A (ADC A)."
      },
      {
        "number": "14",
        "name": "V6A",
        "type": "passive",
        "description": "Analog input for channel 6 on ADC A; input is bipolar ±10 V, ±5 V or ±2.5 V with 1 MΩ input impedance and clamp protection to ±19.5 V."
      },
      {
        "number": "15",
        "name": "VCC",
        "type": "power_in",
        "description": "Analog supply 4.75 V to 5.25 V for the front-end amplifiers and ADC core, decoupled to AGND with 0.1 µF in parallel with 10 µF."
      },
      {
        "number": "16",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog power ground."
      },
      {
        "number": "17",
        "name": "V5A",
        "type": "passive",
        "description": "Analog input for channel 5 on ADC A; input is bipolar ±10 V, ±5 V or ±2.5 V with 1 MΩ input impedance and clamp protection to ±19.5 V."
      },
      {
        "number": "18",
        "name": "V5AGND",
        "type": "power_in",
        "description": "Analog input ground return for channel 5 input V5A (ADC A)."
      },
      {
        "number": "19",
        "name": "V4A",
        "type": "passive",
        "description": "Analog input for channel 4 on ADC A; input is bipolar ±10 V, ±5 V or ±2.5 V with 1 MΩ input impedance and clamp protection to ±19.5 V."
      },
      {
        "number": "20",
        "name": "V4AGND",
        "type": "power_in",
        "description": "Analog input ground return for channel 4 input V4A (ADC A)."
      },
      {
        "number": "21",
        "name": "V3AGND",
        "type": "power_in",
        "description": "Analog input ground return for channel 3 input V3A (ADC A)."
      },
      {
        "number": "22",
        "name": "V3A",
        "type": "passive",
        "description": "Analog input for channel 3 on ADC A; input is bipolar ±10 V, ±5 V or ±2.5 V with 1 MΩ input impedance and clamp protection to ±19.5 V."
      },
      {
        "number": "23",
        "name": "V2AGND",
        "type": "power_in",
        "description": "Analog input ground return for channel 2 input V2A (ADC A)."
      },
      {
        "number": "24",
        "name": "V2A",
        "type": "passive",
        "description": "Analog input for channel 2 on ADC A; input is bipolar ±10 V, ±5 V or ±2.5 V with 1 MΩ input impedance and clamp protection to ±19.5 V."
      },
      {
        "number": "25",
        "name": "V1AGND",
        "type": "power_in",
        "description": "Analog input ground return for channel 1 input V1A (ADC A)."
      },
      {
        "number": "26",
        "name": "V1A",
        "type": "passive",
        "description": "Analog input for channel 1 on ADC A; input is bipolar ±10 V, ±5 V or ±2.5 V with 1 MΩ input impedance and clamp protection to ±19.5 V."
      },
      {
        "number": "27",
        "name": "V0AGND",
        "type": "power_in",
        "description": "Analog input ground return for channel 0 input V0A (ADC A)."
      },
      {
        "number": "28",
        "name": "V0A",
        "type": "passive",
        "description": "Analog input for channel 0 on ADC A; input is bipolar ±10 V, ±5 V or ±2.5 V with 1 MΩ input impedance and clamp protection to ±19.5 V."
      },
      {
        "number": "29",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog power ground."
      },
      {
        "number": "30",
        "name": "VCC",
        "type": "power_in",
        "description": "Analog supply 4.75 V to 5.25 V for the front-end amplifiers and ADC core, decoupled to AGND with 0.1 µF in parallel with 10 µF."
      },
      {
        "number": "31",
        "name": "REFCAP",
        "type": "passive",
        "description": "Reference buffer output, typically 4 V; connect to AGND with a 10 µF low-ESR ceramic capacitor placed as close as possible to the pin."
      },
      {
        "number": "32",
        "name": "REFGND",
        "type": "power_in",
        "description": "Reference ground; must be connected to AGND."
      },
      {
        "number": "33",
        "name": "REFINOUT",
        "type": "passive",
        "description": "Reference input/output: provides the 2.5 V internal reference when REFSEL is high, or accepts an external 2.5 V reference when REFSEL is low; requires a 10 µF X5R capacitor to REFINOUTGND."
      },
      {
        "number": "34",
        "name": "REFINOUTGND",
        "type": "power_in",
        "description": "Ground for the REFINOUT reference pin."
      },
      {
        "number": "35",
        "name": "REFSEL",
        "type": "input",
        "description": "Selects internal (logic high, reference enabled) or external (logic low, internal reference disabled) 2.5 V reference; latched at full-reset release."
      },
      {
        "number": "36",
        "name": "RESET",
        "type": "input",
        "description": "Reset input: a low pulse of 200 ns to 1100 ns gives a partial reset, longer than 1250 ns gives a full reset, and holding it low powers the device down; after power-up a high pulse longer than 50 ns is required."
      },
      {
        "number": "37",
        "name": "SEQEN",
        "type": "input",
        "description": "Channel sequencer enable in hardware mode (high enables, low disables); must be tied to DGND in software mode and is latched at full-reset release."
      },
      {
        "number": "38",
        "name": "HW_RNGSEL1",
        "type": "input",
        "description": "Hardware/software mode select and hardware input range select (together with HW_RNGSEL0): 00 = software mode, 01 = ±2.5 V, 10 = ±5 V, 11 = ±10 V; mode is latched at full reset."
      },
      {
        "number": "39",
        "name": "HW_RNGSEL0",
        "type": "input",
        "description": "Hardware/software mode select and hardware input range select (together with HW_RNGSEL1): 00 = software mode, 01 = ±2.5 V, 10 = ±5 V, 11 = ±10 V; mode is latched at full reset."
      },
      {
        "number": "40",
        "name": "SER/PAR",
        "type": "input",
        "description": "Interface select: low selects the parallel interface, high selects the serial interface; latched at power-up or full-reset release."
      },
      {
        "number": "41",
        "name": "DB0",
        "type": "bidirectional",
        "description": "Parallel data bit 0 (output/input); must be tied to DGND in serial mode."
      },
      {
        "number": "42",
        "name": "DB1",
        "type": "bidirectional",
        "description": "Parallel data bit 1 (output/input); must be tied to DGND in serial mode."
      },
      {
        "number": "43",
        "name": "DB2",
        "type": "bidirectional",
        "description": "Parallel data bit 2 (output/input); must be tied to DGND in serial mode."
      },
      {
        "number": "44",
        "name": "DB3",
        "type": "bidirectional",
        "description": "Parallel data bit 3 (output/input); must be tied to DGND in serial mode."
      },
      {
        "number": "45",
        "name": "DB4/SER1W",
        "type": "bidirectional",
        "description": "Parallel data bit 4 (tri-state); in serial mode selects 2-wire (high, SDOA and SDOB) or 1-wire (low, SDOA only) output and is latched at full reset."
      },
      {
        "number": "46",
        "name": "DB5/CRCEN",
        "type": "bidirectional",
        "description": "Parallel data bit 5 (tri-state); in serial mode it is the CRC enable input (high appends a CRC word after conversion results), latched at full reset release and tied to DGND in software mode."
      },
      {
        "number": "47",
        "name": "DB6",
        "type": "bidirectional",
        "description": "Parallel data bit 6 (tri-state); must be tied to DGND in serial mode."
      },
      {
        "number": "48",
        "name": "DB7",
        "type": "bidirectional",
        "description": "Parallel data bit 7 (tri-state); must be tied to DGND in serial mode."
      },
      {
        "number": "49",
        "name": "VDRIVE",
        "type": "power_in",
        "description": "Logic supply 2.3 V to 3.6 V that sets the logic interface voltage; decoupled to DGND with 0.1 µF in parallel with 10 µF."
      },
      {
        "number": "50",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "51",
        "name": "REGGNDD",
        "type": "power_in",
        "description": "Ground for the digital LDO."
      },
      {
        "number": "52",
        "name": "REGCAPD",
        "type": "passive",
        "description": "Digital LDO output, typically 1.9 V; decouple to REGGNDD with a 1 µF capacitor."
      },
      {
        "number": "53",
        "name": "DB8",
        "type": "bidirectional",
        "description": "Parallel data bit 8 (tri-state); must be tied to DGND in serial mode."
      },
      {
        "number": "54",
        "name": "DB9",
        "type": "bidirectional",
        "description": "Parallel data bit 9 (tri-state); must be tied to DGND in serial mode."
      },
      {
        "number": "55",
        "name": "DB10/SDI",
        "type": "bidirectional",
        "description": "Parallel data bit 10 (tri-state); in serial mode it is the SPI data input SDI."
      },
      {
        "number": "56",
        "name": "DB11/SDOB",
        "type": "bidirectional",
        "description": "Parallel data bit 11 (tri-state); in serial mode it is the serial data output SDOB for channel B."
      },
      {
        "number": "57",
        "name": "DB12/SDOA",
        "type": "bidirectional",
        "description": "Parallel data bit 12 (tri-state); in serial mode it is the serial data output SDOA for channel A."
      },
      {
        "number": "58",
        "name": "DB13/OS0",
        "type": "bidirectional",
        "description": "Parallel data bit 13 (tri-state); in hardware serial mode it is oversampling control OS0, latched at full reset release."
      },
      {
        "number": "59",
        "name": "DB14/OS1",
        "type": "bidirectional",
        "description": "Parallel data bit 14 (tri-state); in hardware serial mode it is oversampling control OS1, latched at full reset release."
      },
      {
        "number": "60",
        "name": "DB15/OS2",
        "type": "bidirectional",
        "description": "Parallel data bit 15 (tri-state); in hardware serial mode it is oversampling control OS2, latched at full reset release."
      },
      {
        "number": "61",
        "name": "WR/BURST",
        "type": "input",
        "description": "Write strobe in software parallel mode; in hardware parallel or serial mode it enables burst sequencer mode, latched at full reset release."
      },
      {
        "number": "62",
        "name": "SCLK/RD",
        "type": "input",
        "description": "Serial clock input in serial mode, or read strobe (active low with CS) in parallel mode for reading the conversion data bus."
      },
      {
        "number": "63",
        "name": "CS",
        "type": "input",
        "description": "Chip select: low enables the DBx output bus in parallel mode and enables serial read frames in serial mode."
      },
      {
        "number": "64",
        "name": "CHSEL0",
        "type": "input",
        "description": "Channel select bit 0 for the next conversion pair in hardware mode (channel pair V0A/V0B to V7A/V7B); must be tied to DGND in software mode."
      },
      {
        "number": "65",
        "name": "CHSEL1",
        "type": "input",
        "description": "Channel select bit 1 for the next conversion pair in hardware mode (channel pair V0A/V0B to V7A/V7B); must be tied to DGND in software mode."
      },
      {
        "number": "66",
        "name": "CHSEL2",
        "type": "input",
        "description": "Channel select bit 2 for the next conversion pair in hardware mode (channel pair V0A/V0B to V7A/V7B); must be tied to DGND in software mode."
      },
      {
        "number": "67",
        "name": "BUSY",
        "type": "output",
        "description": "Conversion status output: goes high after the CONVST rising edge and returns low when conversion completes; data must be read after BUSY falls."
      },
      {
        "number": "68",
        "name": "CONVST",
        "type": "input",
        "description": "Conversion start: a low-to-high transition starts conversion of the selected analog input pair; ignored while BUSY is high."
      },
      {
        "number": "69",
        "name": "REGGND",
        "type": "power_in",
        "description": "Ground for the internal analog LDO."
      },
      {
        "number": "70",
        "name": "REGCAP",
        "type": "passive",
        "description": "Internal analog LDO output, typically 1.9 V; decouple to REGGND with a 1 µF capacitor."
      },
      {
        "number": "71",
        "name": "VCC",
        "type": "power_in",
        "description": "Analog supply 4.75 V to 5.25 V for the front-end amplifiers and ADC core, decoupled to AGND with 0.1 µF in parallel with 10 µF."
      },
      {
        "number": "72",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog power ground."
      },
      {
        "number": "73",
        "name": "V0B",
        "type": "passive",
        "description": "Analog input for channel 0 on ADC B; input is bipolar ±10 V, ±5 V or ±2.5 V with 1 MΩ input impedance and clamp protection to ±19.5 V."
      },
      {
        "number": "74",
        "name": "V0BGND",
        "type": "power_in",
        "description": "Analog input ground return for channel 0 input V0B (ADC B)."
      },
      {
        "number": "75",
        "name": "V1B",
        "type": "passive",
        "description": "Analog input for channel 1 on ADC B; input is bipolar ±10 V, ±5 V or ±2.5 V with 1 MΩ input impedance and clamp protection to ±19.5 V."
      },
      {
        "number": "76",
        "name": "V1BGND",
        "type": "power_in",
        "description": "Analog input ground return for channel 1 input V1B (ADC B)."
      },
      {
        "number": "77",
        "name": "V2B",
        "type": "passive",
        "description": "Analog input for channel 2 on ADC B; input is bipolar ±10 V, ±5 V or ±2.5 V with 1 MΩ input impedance and clamp protection to ±19.5 V."
      },
      {
        "number": "78",
        "name": "V2BGND",
        "type": "power_in",
        "description": "Analog input ground return for channel 2 input V2B (ADC B)."
      },
      {
        "number": "79",
        "name": "V3B",
        "type": "passive",
        "description": "Analog input for channel 3 on ADC B; input is bipolar ±10 V, ±5 V or ±2.5 V with 1 MΩ input impedance and clamp protection to ±19.5 V."
      },
      {
        "number": "80",
        "name": "V3BGND",
        "type": "power_in",
        "description": "Analog input ground return for channel 3 input V3B (ADC B)."
      }
    ],
    "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: Ordering table lists CM2249-QFPTR with packing 'Tray', quantity 900; the 'TR' suffix suggests tape-a; The pin 1-80 figure text is garbled in the extraction; pin numbers and names were taken from Table 1; Analog pins (AI in the datasheet) are mapped to KiCad 'passive'; REFCAP, REFINOUT, REGCAPD and REGCA",
          "2/80 pins cited to the wrong page (name found elsewhere): ['59:DB14/OS1@p7', '65:CHSEL1@p7']"
        ],
        "pages_sent": 28,
        "cost_usd": 0.1748,
        "at": "2026-10-18T09:38:44"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8618864843482800128",
        "pages": 41,
        "sha256": "fc28061c8cda7505",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 80,
        "described": 80,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
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        "footprint_binding": "identity",
        "sha256": "477979184005b1973cf4f2ae93e03c5a50342504190416921945164d4f1db58d",
        "checked": "2026-10-18",
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      },
      {
        "file": "cm2249-qfptr-etched.step",
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "CIMO",
      "Package": "LQFP-80(14x14)",
      "Category": "Data Acquisition",
      "Pins": "80"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "fc28061c8cda75055d42c71a984efcc932b7fd1c9f0100e94b78d8336c871f63",
      "rows": [
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