PIC16LF18344-I

{
  "schema_version": 1,
  "type": "component",
  "slug": "pic16lf18344-i",
  "title": "PIC16LF18344-I",
  "brief": "Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), UQFN-20-EP(4x4). 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",
    "single chip microcomputer-microcontroller",
    "pic16lf18344-i",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "PIC16LF18344-I",
    "manufacturer": "Microchip Tech",
    "package": "UQFN-20-EP(4x4)",
    "pin_count": 21,
    "category": "Single Chip Microcomputer/Microcontroller",
    "subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/6eda0943fc06dbd1f97fff5407167ba5.pdf",
    "parts": {
      "symbol": "pic16lf18344-i.kicad_sym",
      "footprint": "pic16lf18344-i.kicad_mod",
      "model_3d": "pic16lf18344-i-hero.glb",
      "model_3d_plain": "pic16lf18344-i-etched.glb",
      "model_3d_step": "pic16lf18344-i-etched.step",
      "model_3d_step_plain": "pic16lf18344-i.step",
      "lbr": "pic16lf18344-i.lbr"
    },
    "distributor_links": {
      "lcsc": "C638117"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T18:16:13Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 886 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RA3/MCLR/VPP",
        "type": "input",
        "description": "Input-only port pin RA3 that doubles as Master Clear reset input with internal weak pull-up and as the high-voltage programming input VPP."
      },
      {
        "number": "2",
        "name": "RC5",
        "type": "bidirectional",
        "description": "General purpose I/O RC5 with ANC5 analog input, MDCIN2 and CCP1 default inputs, and interrupt-on-change."
      },
      {
        "number": "3",
        "name": "RC4",
        "type": "bidirectional",
        "description": "General purpose I/O RC4 with ANC4 analog input and interrupt-on-change."
      },
      {
        "number": "4",
        "name": "RC3",
        "type": "bidirectional",
        "description": "General purpose I/O RC3 with ANC3, C1IN3-/C2IN3- comparator inputs, MDMIN, CCP2 and CLCIN1 default inputs."
      },
      {
        "number": "5",
        "name": "RC6",
        "type": "bidirectional",
        "description": "General purpose I/O RC6 with ANC6 analog input and SS1 default slave-select input."
      },
      {
        "number": "6",
        "name": "RC7",
        "type": "bidirectional",
        "description": "General purpose I/O RC7 with ANC7 analog input and interrupt-on-change."
      },
      {
        "number": "7",
        "name": "RB7",
        "type": "bidirectional",
        "description": "General purpose I/O RB7 with ANB7 analog input and interrupt-on-change."
      },
      {
        "number": "8",
        "name": "RB6",
        "type": "bidirectional",
        "description": "General purpose I/O RB6 with ANB6 analog input, default SPI clock SCK1 and I2C clock SCL1 (I2C-level capable pin)."
      },
      {
        "number": "9",
        "name": "RB5",
        "type": "bidirectional",
        "description": "General purpose I/O RB5 with ANB5 analog input, EUSART RX and CLCIN3 default inputs."
      },
      {
        "number": "10",
        "name": "RB4",
        "type": "bidirectional",
        "description": "General purpose I/O RB4 with ANB4 analog input, SPI data input SDI1, I2C data SDA1 and CLCIN2 default input."
      },
      {
        "number": "11",
        "name": "RC2",
        "type": "bidirectional",
        "description": "General purpose I/O RC2 with ANC2, C1IN2-/C2IN2- comparator inputs and MDCIN1 default input."
      },
      {
        "number": "12",
        "name": "RC1",
        "type": "bidirectional",
        "description": "General purpose I/O RC1 with ANC1 and C1IN1-/C2IN1- comparator negative inputs."
      },
      {
        "number": "13",
        "name": "RC0",
        "type": "bidirectional",
        "description": "General purpose I/O RC0 with ANC0 analog input and C2IN0+ comparator positive input."
      },
      {
        "number": "14",
        "name": "RA2",
        "type": "bidirectional",
        "description": "General purpose I/O RA2 with ANA2, VREF-, DAC1REF-, T0CKI, CCP3, CWG1IN/CWG2IN, CLCIN0 and INT default inputs."
      },
      {
        "number": "15",
        "name": "RA1/ICSPCLK",
        "type": "bidirectional",
        "description": "General purpose I/O RA1 with ANA1, VREF+, C1IN0-/C2IN0-, DAC1REF+, and ICSP clock / in-circuit debug clock (ICSPCLK/ICDCLK)."
      },
      {
        "number": "16",
        "name": "RA0/ICSPDAT",
        "type": "bidirectional",
        "description": "General purpose I/O RA0 with ANA0, C1IN0+, DAC1OUT analog output, and ICSP data / in-circuit debug data (ICSPDAT/ICDDAT)."
      },
      {
        "number": "17",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference."
      },
      {
        "number": "18",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply, 1.8V to 3.6V for PIC16LF18344; must be decoupled and never left floating."
      },
      {
        "number": "19",
        "name": "RA5",
        "type": "bidirectional",
        "description": "General purpose I/O RA5 with ANA5, T1CKI/T3CKI/T5CKI, secondary oscillator SOSCIN/SOSCI, external clock input CLKIN and crystal pin OSC1."
      },
      {
        "number": "20",
        "name": "RA4",
        "type": "bidirectional",
        "description": "General purpose I/O RA4 with ANA4, T1G/T3G/T5G, CCP4, SOSCO, FOSC/4 CLKOUT and crystal pin OSC2."
      },
      {
        "number": "21",
        "name": "EP",
        "type": "passive",
        "description": "Exposed bottom pad; recommended to be connected to VSS but must not be the main VSS connection to the device."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: MPN 'PIC16LF18344-I' has no package code; UQFN-20 was taken from the package hint. The datasheet als; The exposed pad has no printed pin number. '21' is an assumed designator. The datasheet only says to; The pin-type classification of multiplexed I/O pins is inferred as bidirectional. RA3 is input-only "
        ],
        "pages_sent": 80,
        "cost_usd": 0.6615,
        "at": "2026-10-23T18:16:01"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/6eda0943fc06dbd1f97fff5407167ba5.pdf",
        "pages": 489,
        "sha256": "ef07a4c4e86158f1",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "pic16lf18344-i.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4,
          4,
          0.77
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c9476a1612023de37f27b4972110ab6ac6dc0eaf5ac48957a2e1c497650082a5",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "pic16lf18344-i-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d73d90b3fb40a5c3fad67cb283b4e970bad41a60add1e21312ad6e3d1175ce22",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "UQFN-20-EP(4x4)",
      "Category": "Single Chip Microcomputer/Microcontroller",
      "Pins": "21"
    },
    "appearance": {
      "housing": {
        "quote": "BODY RxyPPS",
        "page": 276,
        "doc": "ds.pdf",
        "material": "PPS"
      },
      "version": 1,
      "datasheet_sha256": "ef07a4c4e86158f18fe7df3feb7fd3025211a411d7e16a9d5e56b230a59d4894"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "ef07a4c4e86158f18fe7df3feb7fd3025211a411d7e16a9d5e56b230a59d4894",
      "rows": [
        {
          "name": "Voltage on VDD pin",
          "symbol": "VDD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 4,
          "conditions": "PIC16LF18324/18344, with respect to VSS",
          "source_page": 408,
          "source": "datasheet"
        },
        {
          "name": "Voltage on MCLR pin",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 9,
          "conditions": "with respect to VSS",
          "source_page": 408,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 408,
          "source": "datasheet"
        },
        {
          "name": "Ambient temperature under bias",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 408,
          "source": "datasheet"
        },
        {
          "name": "Maximum current on VSS pin",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 250,
          "conditions": "-40°C ≤ TA ≤ +85°C",
          "source_page": 408,
          "source": "datasheet"
        },
        {
          "name": "Maximum current on VSS pin",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 85,
          "conditions": "+85°C ≤ TA ≤ +125°C",
          "source_page": 408,
          "source": "datasheet"
        },
        {
          "name": "Maximum current on VDD pin",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 250,
          "conditions": "-40°C ≤ TA ≤ +85°C",
          "source_page": 408,
          "source": "datasheet"
        },
        {
          "name": "Maximum current on VDD pin",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 85,
          "conditions": "+85°C ≤ TA ≤ +125°C",
          "source_page": 408,
          "source": "datasheet"
        },
        {
          "name": "Maximum current on any I/O pin",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 408,
          "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": 408,
          "source": "datasheet"
        },
        {
          "name": "Total power dissipation",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 800,
          "conditions": "",
          "source_page": 408,
          "source": "datasheet"
        },
        {
          "name": "Operating supply voltage",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.8,
          "typ": null,
          "max": 3.6,
          "conditions": "FOSC ≤ 16 MHz",
          "source_page": 411,
          "source": "datasheet"
        },
        {
          "name": "Operating supply voltage",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.5,
          "typ": null,
          "max": 3.6,
          "conditions": "FOSC > 16 MHz",
          "source_page": 411,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature, industrial",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "Industrial Temperature",
          "source_page": 409,
          "source": "datasheet"
        },
        {
          "name": "RAM data retention voltage",
          "symbol": "VDR",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": null,
          "conditions": "Device in Sleep mode",
          "source_page": 411,
          "source": "datasheet"
        },
        {
          "name": "VDD rise rate for internal POR",
          "symbol": "SVDD",
          "kind": "electrical",
          "unit": "V/ms",
          "min": 0.05,
          "typ": null,
          "max": null,
          "conditions": "BOR and LPBOR disabled",
          "source_page": 411,
          "source": "datasheet"
        },
        {
          "name": "Supply current XT = 4 MHz",
          "symbol": "IDDXT4",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 309,
          "max": 400,
          "conditions": "XT = 4 MHz, 3.0V",
          "source_page": 413,
          "source": "datasheet"
        },
        {
          "name": "Supply current HFINTOSC = 16 MHz",
          "symbol": "IDDHFO16",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.2,
          "max": 1.6,
          "conditions": "HFINTOSC = 16 MHz, 3.0V",
          "source_page": 413,
          "source": "datasheet"
        },
        {
          "name": "Supply current HFINTOSC = 32 MHz",
          "symbol": "IDDHFOPLL",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2.3,
          "max": 3.1,
          "conditions": "HFINTOSC = 32 MHz, 3.0V",
          "source_page": 413,
          "source": "datasheet"
        },
        {
          "name": "Supply current HS+PLL = 32 MHz",
          "symbol": "IDDHSPLL32",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2.2,
          "max": 2.9,
          "conditions": "HS+PLL = 32 MHz, 3.0V",
          "source_page": 413,
          "source": "datasheet"
        },
        {
          "name": "Supply current IDLE mode",
          "symbol": "IDDIDLE",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 774,
          "max": 1100,
          "conditions": "IDLE Mode, HFINTOSC = 16 MHz, 3.0V",
          "source_page": 413,
          "source": "datasheet"
        },
        {
          "name": "Power-down current base, max at 85°C",
          "symbol": "IPD",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 0.03,
          "max": 2,
          "conditions": "3.0V, VREGPM = 1, max at +85°C",
          "source_page": 414,
          "source": "datasheet"
        },
        {
          "name": "Power-down current base, max at 125°C",
          "symbol": "IPD",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 0.03,
          "max": 5.2,
          "conditions": "3.0V, VREGPM = 1, max at +125°C",
          "source_page": 414,
          "source": "datasheet"
        },
        {
          "name": "Power-down current WDT, max at 85°C",
          "symbol": "IPD_WDT",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 0.4,
          "max": 2.9,
          "conditions": "3.0V, max at +85°C",
          "source_page": 414,
          "source": "datasheet"
        },
        {
          "name": "Power-down current SOSC, max at 85°C",
          "symbol": "IPD_SOSC",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 1.3,
          "max": 2.8,
          "conditions": "3.0V, max at +85°C",
          "source_page": 414,
          "source": "datasheet"
        },
        {
          "name": "Power-down current FVR, max at 85°C",
          "symbol": "IPD_FVR",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 45,
          "max": 74,
          "conditions": "3.0V, max at +85°C",
          "source_page": 414,
          "source": "datasheet"
        },
        {
          "name": "Power-down current BOR, max at 85°C",
          "symbol": "IPD_BOR",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 10.6,
          "max": 16,
          "conditions": "3.0V, max at +85°C",
          "source_page": 414,
          "source": "datasheet"
        },
        {
          "name": "Power-down current LPBOR, max at 85°C",
          "symbol": "IPD_LPBOR",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 0.3,
          "max": 2.5,
          "conditions": "3.0V, max at +85°C",
          "source_page": 414,
          "source": "datasheet"
        },
        {
          "name": "Power-down current comparator, max at 85°C",
          "symbol": "IPD_CMP",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 30,
          "max": 45,
          "conditions": "3.0V, max at +85°C",
          "source_page": 414,
          "source": "datasheet"
        },
        {
          "name": "Input low voltage, TTL buffer",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "4.5V ≤ VDD ≤ 5.5V",
          "source_page": 415,
          "source": "datasheet"
        },
        {
          "name": "Input low voltage, SMBus levels",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "2.7V ≤ VDD ≤ 5.5V",
          "source_page": 415,
          "source": "datasheet"
        },
        {
          "name": "Input high voltage, TTL buffer",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "4.5V ≤ VDD ≤ 5.5V",
          "source_page": 415,
          "source": "datasheet"
        },
        {
          "name": "Input high voltage, SMBus levels",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.1,
          "typ": null,
          "max": null,
          "conditions": "2.7V ≤ VDD ≤ 5.5V",
          "source_page": 415,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current I/O ports",
          "symbol": "IIL",
          "kind": "electrical",
          "unit": "nA",
          "min": -125,
          "typ": null,
          "max": 125,
          "conditions": "VSS ≤ VPIN ≤ VDD, Pin at high-impedance, 85°C",
          "source_page": 415,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current MCLR",
          "symbol": "IIL",
          "kind": "electrical",
          "unit": "nA",
          "min": -200,
          "typ": null,
          "max": 200,
          "conditions": "VSS ≤ VPIN ≤ VDD, Pin at high-impedance, 85°C",
          "source_page": 415,
          "source": "datasheet"
        },
        {
          "name": "Weak pull-up current",
          "symbol": "IPUR",
          "kind": "electrical",
          "unit": "uA",
          "min": 25,
          "typ": 120,
          "max": 200,
          "conditions": "VDD = 3.0V, VPIN = VSS",
          "source_page": 415,
          "source": "datasheet"
        },
        {
          "name": "Output low voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.6,
          "conditions": "IOL = 10.0 mA, VDD = 3.0V",
          "source_page": 415,
          "source": "datasheet"
        },
        {
          "name": "I/O pin capacitance",
          "symbol": "CIO",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 5,
          "max": 50,
          "conditions": "All I/O pins",
          "source_page": 415,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to ambient",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 43,
          "max": null,
          "conditions": "20-pin UQFN 4x4mm package",
          "source_page": 417,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to case",
          "symbol": "θJC",
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