PIC16F1937-I

{
  "schema_version": 1,
  "type": "component",
  "slug": "pic16f1937-i",
  "title": "PIC16F1937-I",
  "brief": "Microchip Tech Microcontrollers (MCU/MPU/SOC), TQFP-44(10x10). 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",
    "embedded processors & controllers",
    "pic16f1937-i",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "PIC16F1937-I",
    "manufacturer": "Microchip Tech",
    "package": "TQFP-44(10x10)",
    "pin_count": 44,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586173231963246592",
    "parts": {
      "symbol": "pic16f1937-i.kicad_sym",
      "footprint": "pic16f1937-i.kicad_mod",
      "model_3d": "pic16f1937-i-hero.glb",
      "model_3d_plain": "pic16f1937-i-etched.glb",
      "model_3d_step": "pic16f1937-i-etched.step",
      "model_3d_step_plain": "pic16f1937-i.step",
      "lbr": "pic16f1937-i.lbr"
    },
    "distributor_links": {
      "lcsc": "C13870"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T21:22:10Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RC7",
        "type": "bidirectional",
        "description": "General purpose I/O RC7, also EUSART asynchronous receive RX and synchronous data DT, and LCD analog output SEG8."
      },
      {
        "number": "2",
        "name": "RD4",
        "type": "bidirectional",
        "description": "General purpose I/O RD4, also capacitive sensing input CPS12, PWM output P2D, and LCD analog output SEG17."
      },
      {
        "number": "3",
        "name": "RD5",
        "type": "bidirectional",
        "description": "General purpose I/O RD5, also capacitive sensing input CPS13, PWM output P1B, and LCD analog output SEG18."
      },
      {
        "number": "4",
        "name": "RD6",
        "type": "bidirectional",
        "description": "General purpose I/O RD6, also capacitive sensing input CPS14, PWM output P1C, and LCD analog output SEG19."
      },
      {
        "number": "5",
        "name": "RD7",
        "type": "bidirectional",
        "description": "General purpose I/O RD7, also capacitive sensing input CPS15, PWM output P1D, and LCD analog output SEG20."
      },
      {
        "number": "6",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference."
      },
      {
        "number": "7",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply."
      },
      {
        "number": "8",
        "name": "RB0",
        "type": "bidirectional",
        "description": "General purpose I/O RB0 with individually controlled interrupt-on-change and individually enabled pull-up, also external interrupt INT, SR latch input SRI, A/D channel AN12, capacitive sensing input CPS0, and LCD analog output SEG0."
      },
      {
        "number": "9",
        "name": "RB1",
        "type": "bidirectional",
        "description": "General purpose I/O RB1 with individually controlled interrupt-on-change and individually enabled pull-up, also A/D channel AN10, comparator negative input C12IN3-, capacitive sensing input CPS1, and LCD analog input VLCD1."
      },
      {
        "number": "10",
        "name": "RB2",
        "type": "bidirectional",
        "description": "General purpose I/O RB2 with individually controlled interrupt-on-change and individually enabled pull-up, also A/D channel AN8, capacitive sensing input CPS2, and LCD analog input VLCD2."
      },
      {
        "number": "11",
        "name": "RB3",
        "type": "bidirectional",
        "description": "General purpose I/O RB3 with individually controlled interrupt-on-change and individually enabled pull-up, also A/D channel AN9, comparator negative input C12IN2-, capacitive sensing input CPS3, CCP2/P2A output (pin function selectable via APFCON), and LCD analog input VLCD3."
      },
      {
        "number": "12",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; no function is assigned to this pin in the pin diagram."
      },
      {
        "number": "13",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; no function is assigned to this pin in the pin diagram."
      },
      {
        "number": "14",
        "name": "RB4",
        "type": "bidirectional",
        "description": "General purpose I/O RB4 with individually controlled interrupt-on-change and individually enabled pull-up, also A/D channel AN11, capacitive sensing input CPS4, and LCD analog output COM0."
      },
      {
        "number": "15",
        "name": "RB5",
        "type": "bidirectional",
        "description": "General purpose I/O RB5 with individually controlled interrupt-on-change and individually enabled pull-up, also A/D channel AN13, capacitive sensing input CPS5, Timer1 gate input T1G, CCP3/P3A (pin function selectable via APFCON), and LCD analog output COM1."
      },
      {
        "number": "16",
        "name": "RB6",
        "type": "bidirectional",
        "description": "General purpose I/O RB6 with individually controlled interrupt-on-change and individually enabled pull-up, also ICSP serial programming clock ICSPCLK, in-circuit debug clock ICDCLK, and LCD analog output SEG14."
      },
      {
        "number": "17",
        "name": "RB7",
        "type": "bidirectional",
        "description": "General purpose I/O RB7 with individually controlled interrupt-on-change and individually enabled pull-up, also ICSP data I/O ICSPDAT, in-circuit debug data ICDDAT, and LCD analog output SEG13."
      },
      {
        "number": "18",
        "name": "RE3",
        "type": "input",
        "description": "General purpose input RE3, or Master Clear MCLR with internal pull-up, or programming voltage VPP (high-voltage programming)."
      },
      {
        "number": "19",
        "name": "RA0",
        "type": "bidirectional",
        "description": "General purpose I/O RA0, also A/D channel AN0, comparator C1/C2 negative input C12IN0-, comparator C2 output C2OUT, SR latch inverting output SRNQ, slave select input SS (C2OUT, SRNQ and SS selectable via APFCON), filter capacitor VCAP (PIC16F1934/6/7 only), and LCD analog output SEG12."
      },
      {
        "number": "20",
        "name": "RA1",
        "type": "bidirectional",
        "description": "General purpose I/O RA1, also A/D channel AN1, comparator C1/C2 negative input C12IN1-, and LCD analog output SEG7."
      },
      {
        "number": "21",
        "name": "RA2",
        "type": "bidirectional",
        "description": "General purpose I/O RA2, also A/D channel AN2, A/D negative voltage reference input VREF-, comparator C2 positive input C2IN+, voltage reference output DACOUT, and LCD analog output COM2."
      },
      {
        "number": "22",
        "name": "RA3",
        "type": "bidirectional",
        "description": "General purpose I/O RA3, also A/D channel AN3, A/D positive voltage reference input VREF+, comparator C1 positive input C1IN+, and LCD analog output SEG15."
      },
      {
        "number": "23",
        "name": "RA4",
        "type": "bidirectional",
        "description": "General purpose I/O RA4, also comparator C1 output C1OUT, capacitive sensing input CPS6, Timer0 clock input T0CKI (Schmitt Trigger), SR latch non-inverting output SRQ, and LCD analog output SEG4."
      },
      {
        "number": "24",
        "name": "RA5",
        "type": "bidirectional",
        "description": "General purpose I/O RA5, also A/D channel AN4, comparator C2 output C2OUT, capacitive sensing input CPS7, SR latch inverting output SRNQ, slave select input SS, filter capacitor VCAP (PIC16F1934/6/7 only), and LCD analog output SEG5."
      },
      {
        "number": "25",
        "name": "RE0",
        "type": "bidirectional",
        "description": "General purpose I/O RE0, also A/D channel AN5, CCP3/P3A PWM function (pin function selectable via APFCON), and LCD analog output SEG21."
      },
      {
        "number": "26",
        "name": "RE1",
        "type": "bidirectional",
        "description": "General purpose I/O RE1, also A/D channel AN6, PWM output P3B, and LCD analog output SEG22."
      },
      {
        "number": "27",
        "name": "RE2",
        "type": "bidirectional",
        "description": "General purpose I/O RE2, also A/D channel AN7, CCP5 capture/compare/PWM, and LCD analog output SEG23."
      },
      {
        "number": "28",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply."
      },
      {
        "number": "29",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference."
      },
      {
        "number": "30",
        "name": "RA7",
        "type": "bidirectional",
        "description": "General purpose I/O RA7, also crystal/resonator input OSC1 (LP, XT, HS modes), external clock input CLKIN (EC mode), and LCD analog output SEG2."
      },
      {
        "number": "31",
        "name": "RA6",
        "type": "bidirectional",
        "description": "General purpose I/O RA6, also crystal/resonator output OSC2 (LP, XT, HS modes), FOSC/4 output CLKOUT, filter capacitor VCAP (PIC16F1934/6/7 only), and LCD analog output SEG1."
      },
      {
        "number": "32",
        "name": "RC0",
        "type": "bidirectional",
        "description": "General purpose I/O RC0, also Timer1 oscillator output T1OSO, Timer1 clock input T1CKI, and PWM output P2B (pin function selectable via APFCON)."
      },
      {
        "number": "33",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; no function is assigned to this pin in the pin diagram."
      },
      {
        "number": "34",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; no function is assigned to this pin in the pin diagram."
      },
      {
        "number": "35",
        "name": "RC1",
        "type": "bidirectional",
        "description": "General purpose I/O RC1, also Timer1 oscillator input T1OSI, CCP2 capture/compare/PWM and PWM output P2A (pin function selectable via APFCON)."
      },
      {
        "number": "36",
        "name": "RC2",
        "type": "bidirectional",
        "description": "General purpose I/O RC2, also CCP1 capture/compare/PWM, PWM output P1A, and LCD analog output SEG3."
      },
      {
        "number": "37",
        "name": "RC3",
        "type": "bidirectional",
        "description": "General purpose I/O RC3, also SPI clock SCK, I2C clock SCL (open-drain), and LCD analog output SEG6."
      },
      {
        "number": "38",
        "name": "RD0",
        "type": "bidirectional",
        "description": "General purpose I/O RD0, also capacitive sensing input CPS8 and LCD analog output COM3."
      },
      {
        "number": "39",
        "name": "RD1",
        "type": "bidirectional",
        "description": "General purpose I/O RD1, also capacitive sensing input CPS9 and CCP4 capture/compare/PWM."
      },
      {
        "number": "40",
        "name": "RD2",
        "type": "bidirectional",
        "description": "General purpose I/O RD2, also capacitive sensing input CPS10 and PWM output P2B."
      },
      {
        "number": "41",
        "name": "RD3",
        "type": "bidirectional",
        "description": "General purpose I/O RD3, also capacitive sensing input CPS11, PWM output P2C, and LCD analog output SEG16."
      },
      {
        "number": "42",
        "name": "RC4",
        "type": "bidirectional",
        "description": "General purpose I/O RC4, also SPI data input SDI, I2C data I/O SDA (open-drain), Timer1 gate input T1G, and LCD analog output SEG11."
      },
      {
        "number": "43",
        "name": "RC5",
        "type": "bidirectional",
        "description": "General purpose I/O RC5, also SPI data output SDO and LCD analog output SEG10."
      },
      {
        "number": "44",
        "name": "RC6",
        "type": "bidirectional",
        "description": "General purpose I/O RC6, also EUSART asynchronous transmit TX, synchronous clock CK, and LCD analog output SEG9."
      }
    ],
    "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 pin diagram text for the 44-pin TQFP (page 11) is extracted out of order, so pin numbers were ta; Pins 12, 13, 33 and 34 are labelled NC in the pin diagram but are not listed in Table 2 for any func; Names are the primary port names. Alternate functions are multiplexed and some can be moved between ",
          "24/44 pins cited to the wrong page (name found elsewhere): ['16:RB6@p19', '18:RE3@p21', '20:RA1@p17', '21:RA2@p17']"
        ],
        "pages_sent": 101,
        "cost_usd": 0.6261,
        "at": "2026-10-17T21:19:52"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586173231963246592",
        "pages": 472,
        "sha256": "9250c7993972a4aa",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 44,
        "described": 44,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "pic16f1937-i.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12,
          12,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "61ecec1147f835d2c9d165c450b1c8d53e65b038f6ca1dac3066a2dfb1bbbb85",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "pic16f1937-i-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12,
          12,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "5c1b011fd3f1abff2cf7368854e35d65153e1a4702377d361bd32e9bb97cb010",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "TQFP-44(10x10)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "44"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "9250c7993972a4aafde15678263d6ae18de3e141f1d583d27b7da39d851b680f",
      "rows": [
        {
          "name": "Ambient temperature under bias",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 379,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 379,
          "source": "datasheet"
        },
        {
          "name": "Voltage on VDD with respect to VSS",
          "symbol": "VDD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6.5,
          "conditions": "",
          "source_page": 379,
          "source": "datasheet"
        },
        {
          "name": "Voltage on VCAP pin with respect to VSS",
          "symbol": "VCAP",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 4,
          "conditions": "",
          "source_page": 379,
          "source": "datasheet"
        },
        {
          "name": "Voltage on MCLR with respect to VSS",
          "symbol": "VMCLR",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 9,
          "conditions": "",
          "source_page": 379,
          "source": "datasheet"
        },
        {
          "name": "Voltage on all other pins with respect to VSS",
          "symbol": "VPIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Printed maximum is (VDD + 0.3V)",
          "source_page": 379,
          "source": "datasheet"
        },
        {
          "name": "Maximum current out of VSS pin",
          "symbol": "IVSS",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 255,
          "conditions": "-40°C ≤ TA ≤ +85°C for industrial; footnote says for 28-pin devices",
          "source_page": 379,
          "source": "datasheet"
        },
        {
          "name": "Maximum current into VDD pin",
          "symbol": "IVDD",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 170,
          "conditions": "-40°C ≤ TA ≤ +85°C for industrial; footnote says for 28-pin devices",
          "source_page": 379,
          "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": 379,
          "source": "datasheet"
        },
        {
          "name": "Maximum output current sunk by any I/O pin",
          "symbol": "IOL",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 25,
          "conditions": "",
          "source_page": 379,
          "source": "datasheet"
        },
        {
          "name": "Maximum output current sourced by any I/O pin",
          "symbol": "IOH",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 25,
          "conditions": "",
          "source_page": 379,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to ambient, 44-pin TQFP",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 46,
          "max": null,
          "conditions": "44-pin TQFP package",
          "source_page": 392,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to case, 44-pin TQFP",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 14.5,
          "max": null,
          "conditions": "44-pin TQFP package",
          "source_page": 392,
          "source": "datasheet"
        },
        {
          "name": "Maximum junction temperature",
          "symbol": "TJMAX",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "",
          "source_page": 392,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage VDD (PIC16F, FOSC ≤ 16 MHz)",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.8,
          "typ": null,
          "max": 5.5,
          "conditions": "FOSC ≤ 16 MHz",
          "source_page": 382,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage VDD (PIC16F, FOSC ≤ 32 MHz)",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.3,
          "typ": null,
          "max": 5.5,
          "conditions": "FOSC ≤ 32 MHz (Note 2: PLL required for 32 MHz)",
          "source_page": 382,
          "source": "datasheet"
        },
        {
          "name": "RAM data retention voltage",
          "symbol": "VDR",
          "kind": "electrical",
          "unit": "V",
          "min": 1.7,
          "typ": null,
          "max": null,
          "conditions": "Device in Sleep mode",
          "source_page": 382,
          "source": "datasheet"
        },
        {
          "name": "VDD rise rate to ensure internal POR signal",
          "symbol": "SVDD",
          "kind": "electrical",
          "unit": "V/ms",
          "min": 0.05,
          "typ": null,
          "max": null,
          "conditions": "See Section 6.1",
          "source_page": 382,
          "source": "datasheet"
        },
        {
          "name": "Fixed Voltage Reference voltage for ADC",
          "symbol": "VADFVR",
          "kind": "tolerance",
          "unit": "%",
          "min": -8,
          "typ": null,
          "max": 6,
          "conditions": "1.024V, VDD ≥ 2.5V; 2.048V, VDD ≥ 2.5V; 4.096V, VDD ≥ 4.75V",
          "source_page": 382,
          "source": "datasheet"
        },
        {
          "name": "Fixed Voltage Reference voltage for Comparator and DAC",
          "symbol": "VCDAFVR",
          "kind": "tolerance",
          "unit": "%",
          "min": -11,
          "typ": null,
          "max": 7,
          "conditions": "1.024V, VDD ≥ 2.5V; 2.048V, VDD ≥ 2.5V; 4.096V, VDD ≥ 4.75V",
          "source_page": 382,
          "source": "datasheet"
        },
        {
          "name": "Fixed Voltage Reference voltage for LCD bias",
          "symbol": "VLCDFVR",
          "kind": "tolerance",
          "unit": "%",
          "min": -11,
          "typ": null,
          "max": 10,
          "conditions": "3.072V, VDD ≥ 3.6V",
          "source_page": 382,
          "source": "datasheet"
        },
        {
          "name": "External clock input frequency, EC high-power mode",
          "symbol": "FOSC",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "EC Oscillator mode (high); printed minimum is DC",
          "source_page": 394,
          "source": "datasheet"
        },
        {
          "name": "Oscillator frequency, HS mode",
          "symbol": "FOSC",
          "kind": "electrical",
          "unit": "MHz",
          "min": 1,
          "typ": null,
          "max": 20,
          "conditions": "HS Oscillator mode, VDD > 2.7V",
          "source_page": 394,
          "source": "datasheet"
        },
        {
          "name": "Oscillator frequency, XT mode",
          "symbol": "FOSC",
          "kind": "electrical",
          "unit": "MHz",
          "min": 0.1,
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