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PIC18LF14K22-I
Public Made by Adomby adom
Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), QFN-20-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownPIC18LF14K22-I
Microchip Tech · Microcontroller Units (MCUs/MPUs/SOCs) · QFN-20-EP(4x4)
PIC18LF14K22-I from Microchip Tech, in a QFN-20-EP(4x4). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | RA3/MCLR/VPP | input | RA3 digital Schmitt-trigger input, active-low Master Clear with internal pull-up, or high-voltage programming input (VPP). |
| 2 | RC5/CCP1/P1A | bidirectional | PORTC digital I/O (ST) with Capture 1 input/Compare 1 output/PWM 1 output and Enhanced CCP1 PWM output P1A. |
| 3 | RC4/C2OUT/P1B/SRNQ | bidirectional | PORTC digital I/O (ST) with Comparator C2 output, Enhanced CCP1 PWM output P1B and SR latch inverted output. |
| 4 | RC3/AN7/C12IN3-/P1C/PGM | bidirectional | PORTC digital I/O with ADC channel 7, Comparator C1/C2 inverting input 3, ECCP1 PWM output P1C and low-voltage ICSP programming enable (PGM). |
| 5 | RC6/AN8/SS | bidirectional | PORTC digital I/O with ADC channel 8 and SPI slave select input. |
| 6 | RC7/AN9/SDO | bidirectional | PORTC digital I/O with ADC channel 9 and SPI data out. |
| 7 | RB7/TX/CK | bidirectional | PORTB digital I/O (TTL) with EUSART asynchronous transmit and EUSART synchronous clock; programmable weak pull-up and interrupt-on-change. |
| 8 | RB6/SCK/SCL | bidirectional | PORTB digital I/O (TTL) with synchronous serial clock input/output for SPI (SCK) and I2C (SCL) modes. |
| 9 | RB5/AN11/RX/DT | bidirectional | PORTB digital I/O with ADC channel 11, EUSART asynchronous receive and EUSART synchronous data. |
| 10 | RB4/AN10/SDI/SDA | bidirectional | PORTB digital I/O with ADC channel 10, SPI data in and I2C data I/O. |
| 11 | RC2/AN6/C12IN2-/P1D | bidirectional | PORTC digital I/O with ADC channel 6, Comparator C1/C2 inverting input 2 and Enhanced CCP1 PWM output P1D. |
| 12 | RC1/AN5/C12IN1- | bidirectional | PORTC digital I/O with ADC channel 5 and Comparator C1/C2 inverting input 1. |
| 13 | RC0/AN4/C2IN+ | bidirectional | PORTC digital I/O with ADC channel 4 and Comparator C2 noninverting input. |
| 14 | RA2/AN2/C1OUT/T0CKI/INT2/SRQ | bidirectional | PORTA digital I/O with ADC channel 2, Comparator C1 output, Timer0 external clock input, external interrupt 2 and SR latch output. |
| 15 | RA1/AN1/C12IN0-/VREF+/INT1/PGC | bidirectional | PORTA digital I/O with ADC channel 1, Comparator C1/C2 inverting input 0, ADC/DAC high reference input, external interrupt 1 and ICSP programming clock. |
| 16 | RA0/AN0/CVREF/VREF-/C1IN+/INT0/PGD | bidirectional | PORTA digital I/O with ADC channel 0, DAC reference output, ADC/DAC low reference input, Comparator C1 noninverting input, external interrupt 0 and ICSP programming data. |
| 17 | VSS | power_in | Ground reference for logic and I/O pins. |
| 18 | VDD | power_in | Positive supply for logic and I/O pins (2.3-5.5V for PIC18F1XK22, 1.8V-3.6V for PIC18LF1XK22). |
| 19 | RA5/OSC1/CLKIN/T13CKI | bidirectional | PORTA digital I/O, oscillator crystal input or external clock input, and Timer1/Timer3 external clock input. |
| 20 | RA4/AN3/OSC2/CLKOUT | bidirectional | PORTA digital I/O with ADC channel 3, oscillator crystal output, or CLKOUT at 1/4 the OSC1 frequency in RC mode. |
| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | QFN-20-EP(4x4) |
| Category | Single Chip Microcomputer/Microcontroller |
| Pins | 21 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Voltage (PIC18LF1XK22) | VDD | 1.8 | 3.6 | V | FOSC ≤ 16 MHz | 324 | |
| Supply Voltage (PIC18LF1XK22) | VDD | 2 | 3.6 | V | FOSC ≤ 20 MHz | 324 | |
| Supply Voltage (PIC18LF1XK22) | VDD | 3 | 3.6 | V | FOSC ≤ 64 MHz, ≤ 85°C | 324 | |
| RAM Data Retention Voltage | VDR | 1.5 | V | Device in Sleep mode | 324 | ||
| VDD Rise Rate to ensure internal Power-on Reset signal | SVDD | 0.05 | V/ms | 324 | |||
| Power-on Reset Release Voltage | VPOR | 1.6 | V | 324 | |||
| Power-on Reset Rearm Voltage | VPORR | 0.8 | V | 324 | |||
| Voltage on VDD pin (PIC18LF1XK22) | VDD | -0.3 | 4 | V | with respect to VSS | 319 | |
| Voltage on MCLR pin | -0.3 | 9 | V | with respect to VSS | 319 | ||
| Ambient temperature under bias | -40 | 125 | °C | 319 | |||
| Storage temperature | -65 | 150 | °C | 319 | |||
| Maximum current on VSS pin | 250 | mA | -40°C ≤ TA ≤ +85°C, Industrial | 319 | |||
| Maximum current on VDD pin | 250 | mA | -40°C ≤ TA ≤ +85°C, Industrial | 319 | |||
| Maximum current sunk by all ports | 250 | mA | 319 | ||||
| Maximum current sourced by all ports | 250 | mA | 319 | ||||
| Maximum output current sunk by any I/O pin | 50 | mA | 319 | ||||
| Maximum output current sourced by any I/O pin | 50 | mA | 319 | ||||
| Clamp current | IK | 20 | mA | VPIN < 0 or VPIN > VDD | 319 | ||
| Operating Ambient Temperature, Industrial | TA | -40 | 85 | °C | Industrial temperature | 320 | |
| Input Low Voltage, I/O ports with TTL buffer | VIL | 0.8 | V | 4.5V ≤ VDD ≤ 5.5V | 334 | ||
| Input Low Voltage, Schmitt Trigger buffer | VIL | 0.2 | V | 1.8V ≤ VDD ≤ 5.5V; max printed as 0.2 VDD | 334 | ||
| Input Leakage Current, I/O ports | IIL | -100 | 5 | 100 | nA | VSS ≤ VPIN ≤ VDD, Pin at high-impedance, -40°C to 85°C | 334 |
| Input Leakage Current, MCLR | IIL | -200 | 50 | 200 | nA | VSS ≤ VPIN ≤ VDD | 334 |
| PORTB Weak Pull-up Current | IPUR | 50 | 250 | 400 | µA | VDD = 5.0V, VPIN = VSS | 334 |
| Output Low Voltage, I/O ports | VOL | 0.6 | V | IOL = 3 mA, VDD = VDDMIN; max printed as VSS+0.6 | 335 | ||
| Output High Voltage, I/O ports | VOH | 0.7 | V | IOH = 2 mA, VDD = VDDMIN; min printed as VDD-0.7 | 336 | ||
| Thermal Resistance Junction to Ambient | θJA | 43 | °C/W | 20-pin QFN 4x4mm package | 338 | ||
| Thermal Resistance Junction to Case | θJC | 5.3 | °C/W | 20-pin QFN 4x4mm package | 338 | ||
| Maximum Junction Temperature | TJMAX | 150 | °C | 338 | |||
| Brown-out Reset Voltage | VBOR | 1.75 | 1.9 | 2.05 | V | BORV = 1.9V | 345 |
| Brown-out Reset Hysteresis | VHYST | 0 | 25 | 50 | mV | -40°C to +85°C | 345 |
CAD (KiCad official)
- Symbol:
PIC18LF14K22-I - Footprint:
Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm - 3D model: QFN-20-EP(4x4) (KiCad packages3D, STEP)
- 3D model files:
pic18lf14k22-i-etched.step/pic18lf14k22-i-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pic18lf14k22-i.step/pic18lf14k22-i.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (387 pp, sha256
21f69d409798287f, retrieved 2026-10-27, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).