MCP2221A-I

{
  "schema_version": 1,
  "type": "component",
  "slug": "mcp2221a-i",
  "title": "MCP2221A-I",
  "brief": "Microchip Tech USB Converters, TSSOP-14. 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",
    "interface",
    "mcp2221a-i",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "MCP2221A-I",
    "manufacturer": "Microchip Tech",
    "package": "TSSOP-14",
    "pin_count": 14,
    "category": "Interface",
    "subcategory": "USB Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588883655992860672",
    "parts": {
      "symbol": "mcp2221a-i.kicad_sym",
      "footprint": "mcp2221a-i.kicad_mod",
      "model_3d": "mcp2221a-i-hero.glb",
      "model_3d_plain": "mcp2221a-i-etched.glb",
      "model_3d_step": "mcp2221a-i-etched.step",
      "model_3d_step_plain": "mcp2221a-i.step",
      "lbr": "mcp2221a-i.lbr"
    },
    "distributor_links": {
      "lcsc": "C130462"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T11:28:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply pin with an operating voltage of 3.0 to 5.5V, and its level sets the logic-high voltage on the GPIO and UART TX/RX pins."
      },
      {
        "number": "2",
        "name": "GP0",
        "type": "bidirectional",
        "description": "General purpose I/O pin that can alternatively be configured as the SSPND output or the LED_URX UART receive activity output (factory default)."
      },
      {
        "number": "3",
        "name": "GP1",
        "type": "bidirectional",
        "description": "General purpose I/O pin that can alternatively be configured as the CLKR clock output, ADC1 analog input, LED_UTX UART transmit activity output (factory default), or IOC external interrupt input."
      },
      {
        "number": "4",
        "name": "RST",
        "type": "input",
        "description": "Reset input with an internal pull-up."
      },
      {
        "number": "5",
        "name": "URX",
        "type": "input",
        "description": "UART RX pin, serving as the UART data input."
      },
      {
        "number": "6",
        "name": "UTX",
        "type": "output",
        "description": "UART TX pin, serving as the UART data output."
      },
      {
        "number": "7",
        "name": "GP2",
        "type": "bidirectional",
        "description": "General purpose I/O pin that can alternatively be configured as the USBCFG output (factory default), ADC2 analog input, or DAC1 analog output."
      },
      {
        "number": "8",
        "name": "GP3",
        "type": "bidirectional",
        "description": "General purpose I/O pin that can alternatively be configured as the LED_I2C output, ADC3 analog input, or DAC2 analog output."
      },
      {
        "number": "9",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C data line."
      },
      {
        "number": "10",
        "name": "SCL",
        "type": "bidirectional",
        "description": "I2C clock line."
      },
      {
        "number": "11",
        "name": "VUSB",
        "type": "power_in",
        "description": "USB power pin, internally connected to 3.3V, which should be locally bypassed with a high-quality ceramic capacitor."
      },
      {
        "number": "12",
        "name": "D-",
        "type": "bidirectional",
        "description": "USB D- data line."
      },
      {
        "number": "13",
        "name": "D+",
        "type": "bidirectional",
        "description": "USB D+ data line."
      },
      {
        "number": "14",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin."
      }
    ],
    "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: Table 1-1 labels the pin column 'PDIP, SOIC, SSOP', not TSSOP. The 14-pin TSSOP mapping was taken fr; The datasheet does not give a KiCad ERC class for VUSB. It is listed as a USB power pin, internally ; USB D- and D+ have no KiCad ERC class (the datasheet lists them as 'USB'). They were mapped to bidir"
        ],
        "pages_sent": 14,
        "cost_usd": 0.0643,
        "at": "2026-10-18T11:26:36"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588883655992860672",
        "pages": 80,
        "sha256": "7760f2692b2469e1",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 14,
        "described": 14,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "mcp2221a-i.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3ee5786aae56190997aa793ba3cfc003fd616782770e29719b4562f012982245",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mcp2221a-i-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "5cb0b980abba76ffd8dd6e71257469ac82ef646e2a9ff3be80b252476fa5d7d5",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "TSSOP-14",
      "Category": "Interface",
      "Pins": "14"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "7760f2692b2469e1b0290244de95d73e75adfc27229182406be012e4cd688fcb",
      "rows": [
        {
          "name": "Ambient temperature under bias",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Voltage on VDD with respect to VSS",
          "symbol": "VDD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Voltage on RST with respect to VSS",
          "symbol": "VRST",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 9,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Voltage on VUSB pin with respect to VSS",
          "symbol": "VUSB",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 4,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Voltage on D+ and D- pins with respect to VSS",
          "symbol": "VD+, VD-",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Voltage on all other pins with respect to VSS",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Maximum current out of VSS pin",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 95,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Maximum current into VDD pin",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 95,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Clamp current",
          "symbol": "IK",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "VPIN < 0 or VPIN > VDD",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Maximum current sunk by all ports",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 90,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Maximum current sourced by all ports",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 90,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": 5.5,
          "conditions": "Operating conditions 3.0V ≤ VDD ≤ 5.5V",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature (I-Temp)",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "I-Temp",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "RST pin pull-up resistor to VDD (POR)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "kΩ",
          "min": 1,
          "typ": null,
          "max": 10,
          "conditions": "Tie RST to VDD through a resistor",
          "source_page": 21,
          "source": "datasheet"
        },
        {
          "name": "VUSB bypass capacitor (ceramic)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 0.22,
          "typ": null,
          "max": 0.47,
          "conditions": "Ceramic capacitor on VUSB",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Supply Rise Rate to Ensure POR",
          "symbol": "SVDD",
          "kind": "electrical",
          "unit": "V/ms",
          "min": 0.05,
          "typ": null,
          "max": null,
          "conditions": "Design guidance only; Not tested",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "POR Release Voltage",
          "symbol": "VPOR",
          "kind": "electrical",
          "unit": "V",
          "min": 1.6,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "Supply Current",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 10,
          "max": 12,
          "conditions": "FOSC = 12 MHz, (330 nF on VUSB); VDD = 3.0V",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "Supply Current",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 13,
          "max": 15,
          "conditions": "FOSC = 12 MHz, (330 nF on VUSB); VDD = 5.0V",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "Input Low-Voltage Schmitt Trigger (URX)",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "VDD",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "3.0V ≤ VDD ≤ 5.5V",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "Input Low-Voltage TTL (GP pins)",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "4.5V ≤ VDD ≤ 5.5V",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "Input High-Voltage Schmitt Trigger (URX)",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "VDD",
          "min": 0.8,
          "typ": null,
          "max": null,
          "conditions": "3.0V ≤ VDD ≤ 5.5V",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "Input High-Voltage TTL (GP pins)",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "4.5V ≤ VDD ≤ 5.5V",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "Input Leakage Current GP, URX",
          "symbol": "IIL",
          "kind": "tolerance",
          "unit": "nA",
          "min": -100,
          "typ": null,
          "max": 100,
          "conditions": "VSS ≤ VPIN ≤ VDD, pin at high-Z",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "Output Low-Voltage GP, UTX",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.6,
          "conditions": "IOL = 8.0 mA, VDD = 5.0V",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "Output High-Voltage GP, UTX",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V below VDD",
          "min": 0.7,
          "typ": null,
          "max": null,
          "conditions": "IOH = -3.5 mA, VDD = 5.0V",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "GPIO Capacitive Loading",
          "symbol": "CIO",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "Note 1",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "USB Voltage",
          "symbol": "VUSB",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": 3.6,
          "conditions": "Voltage on the VUSB pin must be in this range for proper USB operation",
          "source_page": 59,
          "source": "datasheet"
        },
        {
          "name": "Input Leakage on Pin",
          "symbol": "IIL",
          "kind": "tolerance",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VSS ≤ VPIN ≤ VDD, pin at high-impedance",
          "source_page": 59,
          "source": "datasheet"
        },
        {
          "name": "Input Low Voltage for USB Buffer",
          "symbol": "VILUSB",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "For VUSB range",
          "source_page": 59,
          "source": "datasheet"
        },
        {
          "name": "Input High Voltage for USB Buffer",
          "symbol": "VIHUSB",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "For VUSB range",
          "source_page": 59,
          "source": "datasheet"
        },
        {
          "name": "Differential Input Sensitivity",
          "symbol": "VDIFS",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "The difference between D+ and D- must exceed this value while VCM is met",
          "source_page": 59,
          "source": "datasheet"
        },
        {
          "name": "Differential Common Mode Range",
          "symbol": "VCM",
          "kind": "electrical",
          "unit": "V",
          "min": 0.8,
          "typ": null,
          "max": 2.5,
          "conditions": "",
          "source_page": 59,
          "source": "datasheet"
        },
        {
          "name": "Driver Output Impedance",
          "symbol": "ZOUT",
          "kind": "electrical",
          "unit": "Ω",
          "min": 28,
          "typ": null,
          "max": 44,
          "conditions": "",
          "source_page": 59,
          "source": "datasheet"
        },
        {
          "name": "Voltage Output Low",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 0.3,
          "conditions": "1.5 k load connected to 3.6V",
          "source_page": 59,
          "source": "datasheet"
        },
        {
          "name": "Voltage Output High",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.8,
          "typ": null,
          "max": 3.6,
          "conditions": "1.5 k load connected to ground",
          "source_page": 59,
          "source": "datasheet"
        },
        {
          "name": "ADC Resolution",
          "symbol": "NR",
          "kind": "electrical",
          "unit": "bit",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 60,
          "source": "datasheet"
        },
        {
          "name": "Recommended Impedance of Analog Voltage Source",
          "symbol": "ZAIN",
          "kind": "recommended_operating",
          "unit": "kΩ",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "Can go higher if external 0.01F capacitor is present on input pin.",
          "source_page": 60,
          "source": "datasheet"
        },
        {
          "name": "Settling Time",
          "symbol": "CST",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "Settling time measured while DACVAL<4:0> transitions from '0000' to '1111'",
          "source_page": 60,
          "source": "datasheet"
        },
        {
          "name": "RST Pulse Width (low)",
          "symbol": "TRST",
          "kind": "timing",
          "unit": "µs",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 62,
          "source": "datasheet"
        },
        {
          "name": "Power-up Timer",
          "symbol": "TPWRT",
          "kind": "timing",
          "unit": "ms",
          "min": 40,
          "typ": 65,
          "max": 140,
          "conditions": "",
          "source_page": 62,
          "source": "datasheet"
        },
        {
          "name": "CLKR clock frequency tolerance",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.25,
          "typ": null,
          "max": 0.25,
          "conditions": "Nominal 12 MHz clock output",
          "source_page": 21,
          "source": "datasheet"
        },
        {
          "name": "Internal oscillator clock accuracy over temperature",
          "symbol": "",
          "kind": "tolerance",
          "unit": "ppm",
          "min": null,
          "typ": null,
          "max": 2500,
          "conditions": "Over temperature",
          "source_page": 21,
          "source": "datasheet"
        },
        {
          "name": "Unit Resistor Value (R)",
          "symbol": "CR",
          "kind": "electrical",
          "unit": "kΩ",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "",
          "source_page": 60,
          "source": "datasheet"
        },
        {
          "name": "Oscillator Start-Up Time",
          "symbol": "TOST",
          "kind": "timing",
          "unit": "TOST",
          "min": null,
          "typ": 1024,
          "max": null,
          "conditions": "",
          "source_page": 62,
          "source": "datasheet"
        },
        {
          "name": "Standby Current",
          "symbol": "IDDS",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 46,
          "max": null,
          "conditions": "",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "POR Rearm Voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.8,
          "max": null,
          "conditions": "",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction to Ambient (14-pin TSSOP)",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "C/W",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "14-pin TSSOP package",
          "source_page": 60,
          "source": "datasheet"
        },
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