PIC18LF14K22-I/P - 8-bit XLP MCU 16KB Flash 64MHz 20-PDIP
MPN: PIC18LF14K22-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.52 | $25.20 |
| 100 | $2.14 | $214.00 |
| 500 | $1.86 | $930.00 |
| 1,000 | $1.62 | $1,620.00 |
PIC18LF14K22-I/P Overview
An 8-bit PIC microcontroller is a compact, deterministic Harvard-architecture MCU that executes one byte-wide instruction per cycle. It belongs to the PIC18 high-performance family, sits above PIC16 (mid-range) and below PIC24/dsPIC (16-bit) in Microchip's taxonomy, and is widely used in cost-sensitive embedded applications where low power, small code footprint, and simple peripheral integration matter more than raw compute throughput.
Key features include nanoWatt XLP sleep currents down to the sub-microamp range, an integrated 10-bit ADC, multiple PWM modules, EUSART, MSSP (SPI/I2C), and up to 18 I/O pins. The CPU is C-compiler optimized (MPLAB XC8 compatible), and development is supported by MPLAB X IDE, MPLAB Code Configurator (MCC), and PICkit/SNAP programmers.
Typical applications include low-power IoT sensor nodes, battery-powered consumer products, LED lighting controllers, portable medical accessories, and industrial control modules. The 20-PDIP package simplifies breadboarding and rework, making PIC18LF14K22-I/P well-suited for prototypes, education, and small-batch production.
When designing with this device, prioritize decoupling (0.1 µF near VDD), use the internal oscillator when possible, and validate low-power claims with the XLP current spec at the actual operating voltage. Verify I/O count and peripheral overlap against datasheet pin tables before PCB layout.
Drop-in alternatives for PIC18LF14K22-I/P — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC18LF14K22-I/P (same form factor and footprint) — differing in Operating Temperature, Package, ADC, I/O Pins, Communication.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F14K22-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF13K22-I/P
✅ Drop-In✓ In Stock
$1.52 / Unit
View Datasheet →PIC18LF14K22-E/ML
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC18LF14K22-I/P Maximum Ratings & Electrical Characteristics
| Core | PIC18 8-bit RISC |
| Family | PIC18F1XK22 / PIC18LF1XK22 (nanoWatt XLP) |
| Program Memory | 16 KB Flash (8K × 16) |
| Data SRAM | 512 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Frequency | 64 MHz |
| Operating Voltage Range | 1.8 V to 3.6 V (LF variant) |
| I/O Pins | 18 |
| ADC | 10-bit, multiple channels |
| Timers | Multiple 8/16-bit timers |
| Communication | EUSART, MSSP (SPI / I2C) |
| PWM | Multiple Enhanced PWM channels |
| Package | 20-PDIP (300 mil) |
| Mounting Type | Through-Hole |
| Operating Temperature | -40 °C to +85 °C (Industrial) |
| RoHS | Compliant |
| Lead-Free | Yes |
PIC18LF14K22-I/P Pin Configuration
| Pin 1 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| Pin 2 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| Pin 3 | RA2/AN2 — Digital I/O / Analog input channel 2 |
| Pin 4 | MCLR/VPP/RA3 — Master Clear reset / Programming voltage / Digital I/O |
| Pin 5 | RA4/AN3 — Digital I/O / Analog input channel 3 |
| Pin 6 | RA5/AN4 — Digital I/O / Analog input channel 4 |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RC0 — Digital I/O |
| Pin 9 | RC1 — Digital I/O |
| Pin 10 | RC2 — Digital I/O |
| Pin 11 | RC3 — Digital I/O |
| Pin 12 | RC4 — Digital I/O |
| Pin 13 | RC5 — Digital I/O |
| Pin 14 | RC6 — Digital I/O |
| Pin 15 | RC7 — Digital I/O |
| Pin 16 | RB4 — Digital I/O |
| Pin 17 | RB5 — Digital I/O |
| Pin 18 | RB6 — Digital I/O |
| Pin 19 | RB7 — Digital I/O |
| Pin 20 | VDD — Positive power supply |
Typical Applications
PIC18LF14K22-I/P is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, LED Lighting Controllers, Portable Medical Accessories, Industrial Control Modules, Consumer Electronics HMI, Educational and Prototype Platforms.
Battery-Powered IoT Sensor Nodes
The PIC18LF14K22-I/P is purpose-built for battery-powered IoT sensor nodes where its 1.8V-3.6V LF operating range aligns directly with 2x AA alkaline or single-cell LiFePO4 battery chemistries. The nanoWatt XLP sleep current in the sub-1 µA range combined with fast wake-up time from sleep makes it ideal for duty-cycled sensor reporting: the CPU sleeps, wakes on RTC or interrupt, samples a sensor over EUSART or MSSP, transmits via a connected radio, and returns to sleep. Its 16 KB Flash supports small protocol stacks such as Modbus RTU, BLE controller HCI, or LoRaWAN device drivers, while 512 B SRAM is adequate for frame buffering. At 64 MHz CPU throughput, sensor fusion or on-device signal conditioning is feasible without external DSP.
Recommended
LED Lighting Controllers
The PIC18LF14K22-I/P suits LED lighting controllers where its multiple Enhanced PWM channels and 10-bit ADC support dimming and color-mixing functions. PWM outputs can directly drive MOSFET gate drivers or LED driver ICs for white or RGB lighting strips, while the ADC reads photoresistor or current-sense feedback for closed-loop brightness control. The 64 MHz instruction rate gives PWM resolution sufficient for high-frequency dimming above 1 kHz, eliminating perceptible flicker. The 16 KB Flash accommodates lighting effects libraries, DMX-512 or DALI protocol stacks, and the 1.8V-3.6V LF range supports direct 3.3V operation without level translation.
Recommended
Portable Medical Accessories
For portable medical accessories such as pulse oximeter front-ends, digital thermometer bases, and pill-dispenser controllers, the PIC18LF14K22-I/P provides a deterministic 8-bit core with verified low-power characteristics suitable for IEC 62304 software classification work. The 16 KB Flash supports FDA-style firmware libraries with version control, while the 256-byte EEPROM stores calibration constants and patient/device data non-volatilely. Its industrial -40 to +85 °C temperature range covers body-worn and ambient conditions. The 10-bit ADC is adequate for thermistor bridge or battery voltage monitoring, and the EUSART interfaces to Bluetooth or NFC modules for tethered designs.
Recommended
Industrial Control Modules
The PIC18LF14K22-I/P fits small industrial control modules where 8-bit simplicity, deterministic interrupt response, and 20-PDIP through-hole ease-of-rework outweigh the need for 32-bit performance. Its EUSART and MSSP connect to RS-485 transceivers or I2C sensor/IO expanders, while PWM outputs drive small solenoids, relays, or motor-speed-set inputs. The 10-bit ADC reads 4-20 mA loop signals, potentiometer inputs, or temperature bridges. Industrial -40 to +85 °C operating range, hardware watchdog timer, and brown-out reset provide field reliability needed for factory-floor equipment. The 16 KB Flash supports Modbus RTU slave firmware with diagnostic logging.
Recommended
Consumer Electronics HMI
The PIC18LF14K22-I/P handles simple consumer HMI (Human-Machine Interface) tasks such as button/encoder reading, LED status indication, and small OLED display updates. Its MSSP peripheral can drive SSD1306 OLED displays over I2C with frame buffering in 512 B SRAM, while PWM outputs dim backlights or buzzers. The 16 KB Flash fits LVGL-style simple graphics libraries, button-debounce logic, and BLE pairing code. The 1.8V-3.6V LF range supports coin-cell and 2x AAA applications. The 18 I/O pins cover keypads up to 4x4, multiple rotary encoders, and RGB status LEDs.
Recommended
Educational and Prototype Platforms
The PIC18LF14K22-I/P in 20-PDIP is an excellent educational and prototyping platform because of its breadboard-friendly through-hole package, mature toolchain support, and abundant online resources. Students can hand-solder the part, write C code in MPLAB X with the free XC8 compiler, and debug with PICkit 4 or the low-cost MPLAB SNAP. Its 16 KB Flash and 64 MHz performance are sufficient for teaching embedded concepts such as interrupts, ADC sampling, PWM control, and serial protocols. The XLP power-management lessons map directly to commercial low-power product design.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF14K22-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F14K22-I/P | PIC18LF13K22-I/P | PIC18LF14K22-E/ML |
|---|---|---|---|---|
| Package | 20-PDIP (300 mil) | 20-PDIP - same | 20-PDIP - same | 20-PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Voltage | 1.8 V to 3.6 V (LF) | 1.8 V to 5.5 V | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) |
| Flash Memory | 16 KB | 16 KB | 8 KB (-50%) | 16 KB |
| SRAM | 512 bytes | 512 bytes | 512 bytes | 512 bytes |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Max CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Temperature Range | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +125 °C (Extended) |
Key Differentiators
- Lower-voltage-only operation optimized for battery lifetime (vs PIC18F14K22-I/P)
- Larger Flash for protocol stacks (vs PIC18LF13K22-I/P)
- Through-hole 20-PDIP package for prototype-friendly assembly (vs PIC18LF14K22-E/ML)
Design Notes
The PIC18LF14K22-I/P requires a 0.1 µF ceramic decoupling capacitor placed within 5 mm of the VDD pin (pin 20) with a short, direct trace to VSS (pin 19). For noise-sensitive analog designs, add a 10 µF bulk capacitor near the supply input. The LF variant operates down to 1.8V - verify that your LDO or battery source maintains regulation above 1.8V under all load transients. The nanoWatt XLP sleep current specification assumes VDD is stable; ripple above 50 mVpp can increase sleep current substantially.
Place MCLR (pin 4) pull-up resistor (typically 10 kΩ) close to the pin to avoid spurious resets. If using ICSP, route PGD/PGC away from switching nodes and analog signals to prevent programming interference. Keep the crystal or resonator traces (RA6/OSC2 and RA7/OSC1, pins 15-16) short and symmetric, with a ground guard ring if possible. For the 20-PDIP package, route power and ground on separate layers with stitched vias to minimize loop inductance.
Common pitfalls include: (1) Using F-variant firmware voltage thresholds on LF silicon, causing brown-out resets below 4V; (2) Forgetting to configure unused I/O pins as outputs (floating inputs draw extra current); (3) Not clearing the watchdog timer in low-power sleep loops; (4) Selecting the internal oscillator without configuring the OSCCON register correctly; (5) Exceeding the 25 mA per-pin or 200 mA per-port current limit when driving LEDs directly. Always validate your configuration bits match the application before programming.
Compliance Information
RoHS compliant and lead-free per Microchip product page. Not AEC-Q100 qualified - this part targets industrial/consumer applications, not automotive. For automotive-grade equivalent in this family, consult Microchip's PIC18F1XK22 automotive variants.
