CM2248-QFPTR

{
  "slug": "cm2248-qfptr",
  "version": "0.1.0",
  "type": "component",
  "description": "CIMO Analog To Digital Converters (ADCs), LQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "adc-dac-data conversion",
    "cm2248-qfptr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cm2248-qfptr.kicad_sym",
    "cm2248-qfptr.kicad_mod",
    "cm2248-qfptr.glb",
    "cm2248-qfptr.step",
    "cm2248-qfptr.lbr",
    "docs/hero.png",
    "docs/cm2248-qfptr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cm2248-qfptr-hero.glb",
    "cm2248-qfptr-hero.overlay.json"
  ],
  "component": {
    "mpn": "CM2248-QFPTR",
    "manufacturer": "CIMO",
    "package": "LQFP-64(10x10)",
    "pin_count": 64,
    "category": "ADC/DAC/Data Conversion",
    "subcategory": "Analog To Digital Converters (ADCs)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/f8e62edad79b3ac6b5c725f82616c81a.pdf",
    "parts": {
      "symbol": "cm2248-qfptr.kicad_sym",
      "footprint": "cm2248-qfptr.kicad_mod",
      "model_3d": "cm2248-qfptr-hero.glb",
      "model_3d_plain": "cm2248-qfptr.glb",
      "model_3d_step": "cm2248-qfptr-etched.step",
      "model_3d_step_plain": "cm2248-qfptr.step",
      "lbr": "cm2248-qfptr.lbr"
    },
    "distributor_links": {
      "lcsc": "C20606818"
    },
    "distributor_check": {
      "checked_at": "2026-11-13T11:58:47Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply pin; decouple to AGND with 100nF in parallel with 10µF, and the AVCC supply range is 4.75 V to 5.25 V."
      },
      {
        "number": "2",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for all analog circuitry; all six AGND pins must be connected to the system AGND plane."
      },
      {
        "number": "3",
        "name": "OS0",
        "type": "input",
        "description": "Oversampling select LSB; together with OS1 and OS2 it sets the digital-filter oversampling ratio from no oversampling up to 64x per Table 2."
      },
      {
        "number": "4",
        "name": "OS1",
        "type": "input",
        "description": "Oversampling select middle bit; together with OS0 and OS2 it sets the digital-filter oversampling ratio per Table 2."
      },
      {
        "number": "5",
        "name": "OS2",
        "type": "input",
        "description": "Oversampling select MSB; OS[2:0] = 111 is stated as invalid in Table 2."
      },
      {
        "number": "6",
        "name": "PAR/SER/BYTE_SEL",
        "type": "input",
        "description": "With DB15/BYTE_SEL selects the interface: low selects parallel, high with DB15/BYTE_SEL low selects serial, and high with DB15/BYTE_SEL high selects parallel byte mode."
      },
      {
        "number": "7",
        "name": "STBY",
        "type": "input",
        "description": "Low-power mode input; with RANGE selects standby (RANGE high) or shutdown (RANGE low) mode."
      },
      {
        "number": "8",
        "name": "RANGE",
        "type": "input",
        "description": "Selects the analog input range for all channels: high gives ±10 V and low gives ±5 V; a change takes effect immediately and about 80 µs settling is required before the next sample."
      },
      {
        "number": "9",
        "name": "CONVSTA",
        "type": "input",
        "description": "Convert-start input for V1 to V4 on its rising edge; tie to CONVSTB for simultaneous sampling of all eight channels."
      },
      {
        "number": "10",
        "name": "CONVSTB",
        "type": "input",
        "description": "Convert-start input for V5 to V8 on its rising edge; tie to CONVSTA for simultaneous sampling of all eight channels."
      },
      {
        "number": "11",
        "name": "RESET",
        "type": "input",
        "description": "Active-high reset that aborts any conversion in progress and clears the output register to all zeros; after power-up a high pulse longer than 50 ns is required."
      },
      {
        "number": "12",
        "name": "RD/SCLK",
        "type": "input",
        "description": "Parallel read strobe RD in parallel interface mode, or serial clock SCLK in serial interface mode."
      },
      {
        "number": "13",
        "name": "CS",
        "type": "input",
        "description": "Active-low chip select that enables data frame transfer."
      },
      {
        "number": "14",
        "name": "BUSY",
        "type": "output",
        "description": "Goes high once CONVSTA and CONVSTB have both gone high and stays high until all channel conversions finish; its falling edge latches the conversion data into the output registers."
      },
      {
        "number": "15",
        "name": "FRSTDATA",
        "type": "output",
        "description": "Indicates that the first channel V1 result is ready to be read back; it is tri-stated while CS is high."
      },
      {
        "number": "16",
        "name": "DB0",
        "type": "output",
        "description": "Parallel data bit 0 (LSB) of the conversion result; must be connected to AGND when PAR/SER/BYTE_SEL is high."
      },
      {
        "number": "17",
        "name": "DB1",
        "type": "output",
        "description": "Parallel data bit 1 of the conversion result; must be connected to AGND when PAR/SER/BYTE_SEL is high."
      },
      {
        "number": "18",
        "name": "DB2",
        "type": "output",
        "description": "Parallel data bit 2 of the conversion result; must be connected to AGND when PAR/SER/BYTE_SEL is high."
      },
      {
        "number": "19",
        "name": "DB3",
        "type": "output",
        "description": "Parallel data bit 3 of the conversion result; must be connected to AGND when PAR/SER/BYTE_SEL is high."
      },
      {
        "number": "20",
        "name": "DB4",
        "type": "output",
        "description": "Parallel data bit 4 of the conversion result; must be connected to AGND when PAR/SER/BYTE_SEL is high."
      },
      {
        "number": "21",
        "name": "DB5",
        "type": "output",
        "description": "Parallel data bit 5 of the conversion result; must be connected to AGND when PAR/SER/BYTE_SEL is high."
      },
      {
        "number": "22",
        "name": "DB6",
        "type": "output",
        "description": "Parallel data bit 6 of the conversion result; must be connected to AGND when PAR/SER/BYTE_SEL is high."
      },
      {
        "number": "23",
        "name": "VDRIVE",
        "type": "power_in",
        "description": "Logic interface supply, 1.7 V to 5.25 V; it should match the supply of the controller (DSP or FPGA) it interfaces with."
      },
      {
        "number": "24",
        "name": "DB7/DOUTA",
        "type": "output",
        "description": "Parallel data bit 7 (MSB in parallel mode) or serial data output DOUTA."
      },
      {
        "number": "25",
        "name": "DB8/DOUTB",
        "type": "output",
        "description": "Parallel data bit 8 or serial data output DOUTB."
      },
      {
        "number": "26",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; connect to the system AGND plane."
      },
      {
        "number": "27",
        "name": "DB9",
        "type": "output",
        "description": "Parallel data bit 9 of the conversion result; must be connected to AGND when PAR/SER/BYTE_SEL is high."
      },
      {
        "number": "28",
        "name": "DB10",
        "type": "output",
        "description": "Parallel data bit 10 of the conversion result; must be connected to AGND when PAR/SER/BYTE_SEL is high."
      },
      {
        "number": "29",
        "name": "DB11",
        "type": "output",
        "description": "Parallel data bit 11 of the conversion result; must be connected to AGND when PAR/SER/BYTE_SEL is high."
      },
      {
        "number": "30",
        "name": "DB12",
        "type": "output",
        "description": "Parallel data bit 12 of the conversion result; must be connected to AGND when PAR/SER/BYTE_SEL is high."
      },
      {
        "number": "31",
        "name": "DB13",
        "type": "output",
        "description": "Parallel data bit 13 of the conversion result; must be connected to AGND when PAR/SER/BYTE_SEL is high."
      },
      {
        "number": "32",
        "name": "DB14/HBEN",
        "type": "bidirectional",
        "description": "Parallel data bit 14 in parallel mode; in parallel byte mode it selects MSB-first (HBEN = 1) or LSB-first (HBEN = 0) output, and must be tied to AGND when PAR/SER/BYTE_SEL is high outside byte mode."
      },
      {
        "number": "33",
        "name": "DB15/BYTE_SEL",
        "type": "bidirectional",
        "description": "Parallel data bit 15 (MSB) in parallel mode; when PAR/SER/BYTE_SEL is high it selects serial (0) or parallel byte (1) interface."
      },
      {
        "number": "34",
        "name": "REF_SELECT",
        "type": "input",
        "description": "Selects the internal 2.5 V reference when high; when low the internal reference is disabled and an external 2.5 V reference must be applied to REFIN/REFOUT."
      },
      {
        "number": "35",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; connect to the system AGND plane."
      },
      {
        "number": "36",
        "name": "REGCAP",
        "type": "power_out",
        "description": "Internal regulator output at about 1.9 V; decouple to AGND with 1 µF, and must not be tied directly to pin 39."
      },
      {
        "number": "37",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply pin, 4.75 V to 5.25 V; decouple to AGND with 100nF in parallel with 10µF (may share the decoupling capacitor with pin 38)."
      },
      {
        "number": "38",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply pin, 4.75 V to 5.25 V; decouple to AGND with 100nF in parallel with 10µF (may share the decoupling capacitor with pin 37)."
      },
      {
        "number": "39",
        "name": "REGCAP",
        "type": "power_out",
        "description": "Internal regulator output at about 1.9 V; decouple to AGND with 1 µF, and must not be tied directly to pin 36."
      },
      {
        "number": "40",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; connect to the system AGND plane."
      },
      {
        "number": "41",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; connect to the system AGND plane."
      },
      {
        "number": "42",
        "name": "REFIN/REFOUT",
        "type": "bidirectional",
        "description": "Outputs a 2.5 V internal reference when REF_SELECT is high or accepts a 2.5 V external reference when REF_SELECT is low; a 10 µF capacitor to REFGND is required in both cases."
      },
      {
        "number": "43",
        "name": "REFGND",
        "type": "power_in",
        "description": "Reference ground; connect to AGND."
      },
      {
        "number": "44",
        "name": "REFCAPA",
        "type": "passive",
        "description": "Reference buffer output at about 4 V; must be shorted to REFCAPB and decoupled to AGND with a 10 µF low-ESR ceramic capacitor."
      },
      {
        "number": "45",
        "name": "REFCAPB",
        "type": "passive",
        "description": "Reference buffer output at about 4 V; must be shorted to REFCAPA and decoupled to AGND with a 10 µF low-ESR ceramic capacitor."
      },
      {
        "number": "46",
        "name": "REFGND",
        "type": "power_in",
        "description": "Reference ground; connect to AGND."
      },
      {
        "number": "47",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; connect to the system AGND plane."
      },
      {
        "number": "48",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply pin, 4.75 V to 5.25 V; decouple to AGND with 100nF in parallel with 10µF."
      },
      {
        "number": "49",
        "name": "V1",
        "type": "passive",
        "description": "Single-ended bipolar analog input whose range (±10 V or ±5 V) is set by RANGE; input impedance is 1 MΩ and the clamp protects to ±18.5 V."
      },
      {
        "number": "50",
        "name": "V1GND",
        "type": "power_in",
        "description": "Ground return for analog input V1; connect to the system AGND plane."
      },
      {
        "number": "51",
        "name": "V2",
        "type": "passive",
        "description": "Single-ended bipolar analog input whose range (±10 V or ±5 V) is set by RANGE; input impedance is 1 MΩ and the clamp protects to ±18.5 V."
      },
      {
        "number": "52",
        "name": "V2GND",
        "type": "power_in",
        "description": "Ground return for analog input V2; connect to the system AGND plane."
      },
      {
        "number": "53",
        "name": "V3",
        "type": "passive",
        "description": "Single-ended bipolar analog input whose range (±10 V or ±5 V) is set by RANGE; input impedance is 1 MΩ and the clamp protects to ±18.5 V."
      },
      {
        "number": "54",
        "name": "V3GND",
        "type": "power_in",
        "description": "Ground return for analog input V3; connect to the system AGND plane."
      },
      {
        "number": "55",
        "name": "V4",
        "type": "passive",
        "description": "Single-ended bipolar analog input whose range (±10 V or ±5 V) is set by RANGE; input impedance is 1 MΩ and the clamp protects to ±18.5 V."
      },
      {
        "number": "56",
        "name": "V4GND",
        "type": "power_in",
        "description": "Ground return for analog input V4; connect to the system AGND plane."
      },
      {
        "number": "57",
        "name": "V5",
        "type": "passive",
        "description": "Single-ended bipolar analog input whose range (±10 V or ±5 V) is set by RANGE; input impedance is 1 MΩ and the clamp protects to ±18.5 V."
      },
      {
        "number": "58",
        "name": "V5GND",
        "type": "power_in",
        "description": "Ground return for analog input V5; connect to the system AGND plane."
      },
      {
        "number": "59",
        "name": "V6",
        "type": "passive",
        "description": "Single-ended bipolar analog input whose range (±10 V or ±5 V) is set by RANGE; input impedance is 1 MΩ and the clamp protects to ±18.5 V."
      },
      {
        "number": "60",
        "name": "V6GND",
        "type": "power_in",
        "description": "Ground return for analog input V6; connect to the system AGND plane."
      },
      {
        "number": "61",
        "name": "V7",
        "type": "passive",
        "description": "Single-ended bipolar analog input whose range (±10 V or ±5 V) is set by RANGE; input impedance is 1 MΩ and the clamp protects to ±18.5 V."
      },
      {
        "number": "62",
        "name": "V7GND",
        "type": "power_in",
        "description": "Ground return for analog input V7; connect to the system AGND plane."
      },
      {
        "number": "63",
        "name": "V8",
        "type": "passive",
        "description": "Single-ended bipolar analog input whose range (±10 V or ±5 V) is set by RANGE; input impedance is 1 MΩ and the clamp protects to ±18.5 V."
      },
      {
        "number": "64",
        "name": "V8GND",
        "type": "power_in",
        "description": "Ground return for analog input V8; connect to the system AGND plane."
      }
    ],
    "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's pin table gives BUSY as DI, but the function text describes it as a status output dr; The datasheet labels DB0-DB13 and FRSTDATA as DO, while DB0-DB6 and DB14/DB15 are described as paral; KiCad ERC has no analog class; analog inputs, reference buffer pins and REFCAPA/B were mapped to pas"
        ],
        "pages_sent": 27,
        "cost_usd": 0.1512,
        "at": "2026-11-13T11:58:34"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/f8e62edad79b3ac6b5c725f82616c81a.pdf",
        "pages": 27,
        "sha256": "cb7e3944fcbcc7a7",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 64,
        "described": 64,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "cm2248-qfptr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12.0,
          12.0,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b0c827bc5c05552175d28affe44a5bd2ab45c9c36efff6ff07a74cc449b13db4",
        "checked": "2026-11-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cm2248-qfptr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12.0,
          12.0,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f6770433512dc62aba5bbae6cae0d67cac33adb9eb7da2f65d9f4f4d6f0e8552",
        "checked": "2026-11-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "LQFP64",
      "source_page": 27,
      "D": {
        "nom_mm": 10.0,
        "range_mm": [
          9.9,
          10.1
        ]
      },
      "E1": {
        "nom_mm": 10.0,
        "range_mm": [
          9.9,
          10.1
        ]
      },
      "E": {
        "nom_mm": 12.0,
        "range_mm": [
          11.8,
          12.2
        ]
      },
      "e": {
        "nom_mm": 0.5,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.6,
        "range_mm": [
          null,
          1.6
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "cm2248-qfptr.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}