PIC18F45K20-I

{
  "schema_version": 1,
  "type": "component",
  "slug": "pic18f45k20-i",
  "title": "PIC18F45K20-I",
  "brief": "Microchip Tech Microcontrollers (MCU/MPU/SOC), TQFP-44(10x10). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "embedded processors & controllers",
    "pic18f45k20-i"
  ],
  "component": {
    "mpn": "PIC18F45K20-I",
    "manufacturer": "Microchip Tech",
    "package": "TQFP-44(10x10)",
    "pin_count": 40,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586182450855235584",
    "parts": {
      "symbol": "pic18f45k20-i.kicad_sym",
      "footprint": "pic18f45k20-i.kicad_mod",
      "model_3d": "pic18f45k20-i-etched.glb",
      "model_3d_plain": "pic18f45k20-i.glb",
      "model_3d_step": "pic18f45k20-i-etched.step",
      "model_3d_step_plain": "pic18f45k20-i.step",
      "lbr": "pic18f45k20-i.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "MCLR/VPP/RE3",
        "type": "input",
        "description": "Active-low Master Clear (device Reset) input, high-voltage programming voltage (VPP) input, or PORTE bit 3 digital input. Schmitt-Trigger buffer. When MCLR function is disabled via config, pin operates as read-only RE3 input."
      },
      {
        "number": "2",
        "name": "RA0/AN0/C12IN0-",
        "type": "bidirectional",
        "description": "PORTA bit 0 digital I/O (TTL input), ADC analog channel 0 (AN0), or Comparator C1/C2 inverting input 0 (C12IN0-). Function selected by peripheral configuration registers."
      },
      {
        "number": "3",
        "name": "RA1/AN1/C12IN1-",
        "type": "bidirectional",
        "description": "PORTA bit 1 digital I/O (TTL input), ADC analog channel 1 (AN1), or Comparator C1/C2 inverting input 1 (C12IN1-)."
      },
      {
        "number": "4",
        "name": "RA2/AN2/VREF-/CVREF/C2IN+",
        "type": "bidirectional",
        "description": "PORTA bit 2 digital I/O, ADC channel 2 (AN2), ADC low-voltage reference input (VREF-), programmable Comparator Voltage Reference output (CVREF), or Comparator C2 non-inverting input."
      },
      {
        "number": "5",
        "name": "RA3/AN3/VREF+/C1IN+",
        "type": "bidirectional",
        "description": "PORTA bit 3 digital I/O, ADC channel 3 (AN3), ADC high-voltage reference input (VREF+), or Comparator C1 non-inverting input."
      },
      {
        "number": "6",
        "name": "RA4/T0CKI/C1OUT",
        "type": "bidirectional",
        "description": "PORTA bit 4 digital I/O (Schmitt-Trigger input), Timer0 external clock input (T0CKI), or Comparator C1 output (CMOS)."
      },
      {
        "number": "7",
        "name": "RA5/AN4/SS/HLVDIN/C2OUT",
        "type": "bidirectional",
        "description": "PORTA bit 5 digital I/O, ADC channel 4 (AN4), SPI slave select input (SS), High/Low-Voltage Detect analog input (HLVDIN), or Comparator C2 output."
      },
      {
        "number": "8",
        "name": "RE0/RD/AN5",
        "type": "bidirectional",
        "description": "PORTE bit 0 digital I/O, Parallel Slave Port active-low Read control input (RD), or ADC channel 5 (AN5). See related WR and CS pins for PSP interface."
      },
      {
        "number": "9",
        "name": "RE1/WR/AN6",
        "type": "bidirectional",
        "description": "PORTE bit 1 digital I/O, Parallel Slave Port active-low Write control input (WR), or ADC channel 6 (AN6)."
      },
      {
        "number": "10",
        "name": "RE2/CS/AN7",
        "type": "bidirectional",
        "description": "PORTE bit 2 digital I/O, Parallel Slave Port active-low Chip Select input (CS), or ADC channel 7 (AN7)."
      },
      {
        "number": "11",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply rail for logic and I/O pins. Operating range 1.8V to 3.6V; maximum frequency 64 MHz across industrial temperature range."
      },
      {
        "number": "12",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for logic and I/O pins."
      },
      {
        "number": "13",
        "name": "OSC1/CLKIN/RA7",
        "type": "bidirectional",
        "description": "Primary oscillator crystal input (OSC1), external clock source input (CLKIN), or PORTA bit 7 general-purpose digital I/O. Schmitt-Trigger buffer in RC mode, analog otherwise."
      },
      {
        "number": "14",
        "name": "OSC2/CLKOUT/RA6",
        "type": "bidirectional",
        "description": "Primary oscillator crystal output (OSC2) connects to crystal/resonator in Crystal modes; in RC mode outputs CLKOUT (Fosc/4 instruction cycle rate); or PORTA bit 6 digital I/O in INTOSC modes."
      },
      {
        "number": "15",
        "name": "RC0/T1OSO/T13CKI",
        "type": "bidirectional",
        "description": "PORTC bit 0 digital I/O (Schmitt-Trigger input), Timer1 secondary oscillator output (T1OSO), or Timer1/Timer3 external clock input (T13CKI)."
      },
      {
        "number": "16",
        "name": "RC1/T1OSI/CCP2",
        "type": "bidirectional",
        "description": "PORTC bit 1 digital I/O, Timer1 secondary oscillator input (T1OSI, CMOS buffer), or Capture2/Compare2/PWM2 (CCP2). CCP2 is on RC1 when CONFIG bit CCP2MX=1 (default)."
      },
      {
        "number": "17",
        "name": "RC2/CCP1/P1A",
        "type": "bidirectional",
        "description": "PORTC bit 2 digital I/O, Capture1/Compare1/PWM1 (CCP1), or Enhanced CCP1 output P1A."
      },
      {
        "number": "18",
        "name": "RC3/SCK/SCL",
        "type": "bidirectional",
        "description": "PORTC bit 3 digital I/O, MSSP synchronous serial clock for SPI mode (SCK), or synchronous serial clock for I2C mode (SCL). Schmitt-Trigger inputs."
      },
      {
        "number": "19",
        "name": "RD0/PSP0",
        "type": "bidirectional",
        "description": "PORTD bit 0 digital I/O, or Parallel Slave Port data bit 0 (PSP0, TTL buffer when PSP enabled)."
      },
      {
        "number": "20",
        "name": "RD1/PSP1",
        "type": "bidirectional",
        "description": "PORTD bit 1 digital I/O, or Parallel Slave Port data bit 1 (PSP1)."
      },
      {
        "number": "21",
        "name": "RD2/PSP2",
        "type": "bidirectional",
        "description": "PORTD bit 2 digital I/O, or Parallel Slave Port data bit 2 (PSP2)."
      },
      {
        "number": "22",
        "name": "RD3/PSP3",
        "type": "bidirectional",
        "description": "PORTD bit 3 digital I/O, or Parallel Slave Port data bit 3 (PSP3)."
      },
      {
        "number": "23",
        "name": "RC4/SDI/SDA",
        "type": "bidirectional",
        "description": "PORTC bit 4 digital I/O, MSSP SPI data in (SDI), or I2C data I/O (SDA). Schmitt-Trigger inputs."
      },
      {
        "number": "24",
        "name": "RC5/SDO",
        "type": "bidirectional",
        "description": "PORTC bit 5 digital I/O, or MSSP SPI data out (SDO)."
      },
      {
        "number": "25",
        "name": "RC6/TX/CK",
        "type": "bidirectional",
        "description": "PORTC bit 6 digital I/O, EUSART asynchronous transmit (TX), or EUSART synchronous clock (CK)."
      },
      {
        "number": "26",
        "name": "RC7/RX/DT",
        "type": "bidirectional",
        "description": "PORTC bit 7 digital I/O, EUSART asynchronous receive (RX), or EUSART synchronous data (DT)."
      },
      {
        "number": "27",
        "name": "RD4/PSP4",
        "type": "bidirectional",
        "description": "PORTD bit 4 digital I/O, or Parallel Slave Port data bit 4 (PSP4)."
      },
      {
        "number": "28",
        "name": "RD5/PSP5/P1B",
        "type": "bidirectional",
        "description": "PORTD bit 5 digital I/O, Parallel Slave Port data bit 5 (PSP5), or Enhanced CCP1 output P1B (half/full-bridge PWM)."
      },
      {
        "number": "29",
        "name": "RD6/PSP6/P1C",
        "type": "bidirectional",
        "description": "PORTD bit 6 digital I/O, Parallel Slave Port data bit 6 (PSP6), or Enhanced CCP1 output P1C."
      },
      {
        "number": "30",
        "name": "RD7/PSP7/P1D",
        "type": "bidirectional",
        "description": "PORTD bit 7 digital I/O, Parallel Slave Port data bit 7 (PSP7), or Enhanced CCP1 output P1D."
      },
      {
        "number": "31",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for logic and I/O pins (second VSS pin on 40-PIN PDIP)."
      },
      {
        "number": "32",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply rail (second VDD pin on 40-PIN PDIP). Bypass with 0.1 uF ceramic to nearest VSS."
      },
      {
        "number": "33",
        "name": "RB0/INT0/FLT0/AN12",
        "type": "bidirectional",
        "description": "PORTB bit 0 digital I/O (TTL input, programmable weak pull-up), external interrupt 0 (INT0, Schmitt-Trigger), PWM Fault input for Enhanced CCP1 (FLT0), or ADC channel 12 (AN12)."
      },
      {
        "number": "34",
        "name": "RB1/INT1/AN10/C12IN3-",
        "type": "bidirectional",
        "description": "PORTB bit 1 digital I/O (weak pull-up), external interrupt 1 (INT1), ADC channel 10 (AN10), or Comparator C1/C2 inverting input 3 (C12IN3-)."
      },
      {
        "number": "35",
        "name": "RB2/INT2/AN8",
        "type": "bidirectional",
        "description": "PORTB bit 2 digital I/O (weak pull-up), external interrupt 2 (INT2), or ADC channel 8 (AN8)."
      },
      {
        "number": "36",
        "name": "RB3/AN9/C12IN2-/CCP2",
        "type": "bidirectional",
        "description": "PORTB bit 3 digital I/O (weak pull-up), ADC channel 9 (AN9), Comparator C1/C2 inverting input 2 (C12IN2-), or alternate CCP2 (Capture2/Compare2/PWM2) when CONFIG bit CCP2MX=0."
      },
      {
        "number": "37",
        "name": "RB4/KBI0/AN11",
        "type": "bidirectional",
        "description": "PORTB bit 4 digital I/O (weak pull-up), interrupt-on-change pin (KBI0), or ADC channel 11 (AN11)."
      },
      {
        "number": "38",
        "name": "RB5/KBI1/PGM",
        "type": "bidirectional",
        "description": "PORTB bit 5 digital I/O (weak pull-up), interrupt-on-change (KBI1), or Low-Voltage ICSP programming enable pin (PGM)."
      },
      {
        "number": "39",
        "name": "RB6/KBI2/PGC",
        "type": "bidirectional",
        "description": "PORTB bit 6 digital I/O (weak pull-up), interrupt-on-change (KBI2), or In-Circuit Debugger/ICSP programming clock pin (PGC)."
      },
      {
        "number": "40",
        "name": "RB7/KBI3/PGD",
        "type": "bidirectional",
        "description": "PORTB bit 7 digital I/O (weak pull-up), interrupt-on-change (KBI3), or In-Circuit Debugger/ICSP programming data pin (PGD)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586182450855235584",
        "pages": 441,
        "sha256": "add2e70b6d968ecb",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 40,
        "described": 40,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "TQFP-44(10x10)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "40"
    }
  },
  "variants": [
    {
      "mpn": "PIC18F45K20-II/P",
      "kind": "packaging"
    },
    {
      "mpn": "PIC18F45K20-II/PT",
      "kind": "packaging"
    },
    {
      "mpn": "PIC18F45K20-II/ML",
      "kind": "packaging"
    },
    {
      "mpn": "PIC18F45K20-II/MV",
      "kind": "packaging"
    }
  ],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
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  "discovery_triggers": [
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  ],
  "discovery_pitch": "PIC18F45K20-I (Microchip Tech) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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  "files": [
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    "pic18f45k20-i.step",
    "pic18f45k20-i.lbr",
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    "docs/pic18f45k20-i-datasheet.pdf",
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  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-25T04:23:13.321Z"
}