PIC18F14K22T-I/SS - 8-bit 64MHz XLP MCU 16KB Flash 20-SSOP
MPN: PIC18F14K22T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.18 | $2.18 |
| 10 | $1.92 | $19.20 |
| 100 | $1.65 | $165.00 |
| 500 | $1.41 | $705.00 |
| 1,000 | $1.18 | $1,180.00 |
PIC18F14K22T-I/SS Overview
An 8-bit microcontroller (MCU) is a self-contained computer-on-a-chip that combines a CPU core, program memory, data memory, and peripherals on a single die. The PIC18F family belongs to the wider PIC microcontroller hierarchy (PIC -> 8-bit MCU -> embedded controller -> semiconductor). The 'F' prefix denotes Flash-based reprogrammable program memory; 'K' designates the family's enhanced nanoWatt XLP low-power architecture; and the trailing '22' marks the specific peripheral/peripheral-set configuration. This taxonomy (PIC18F1XK22) positions the part as a mid-pin-count general-purpose MCU ideal for battery-powered and space-constrained designs.
Key features include 16 MIPS throughput at 64MHz, 12-bit ADC variant options, hardware PWM, EUSART, MSSP (SPI/I2C) peripherals, ultra-low-power sleep currents in the nanoWatt range, and dual oscillator support. The part operates from 1.8V to 5.5V across the full industrial temperature range. Internal self-programmability supports field firmware updates, and the 16-channel 10-bit ADC provides mixed-signal capability for sensor-interface designs.
The PIC18F14K22T-I/SS architecture uses a RISC-based Harvard core with separate program and data buses, enabling single-cycle instruction execution except for branch operations. The enhanced 16-level stack, hardware multiplier, and C-friendly instruction set make it attractive for portable instrumentation, sensor nodes, and consumer appliances where deterministic real-time performance and battery life are equally critical.
Typical applications include low-power IoT sensor endpoints, battery-backed wireless remote controls, industrial sensor conditioning, USB bridge modules (in the larger family variants), HVAC control panels, and appliance user-interface controllers. The -40C to +85C industrial rating, XLP low-power sleep modes (down to 20nA typical in sleep), and the small SSOP-20 footprint make it well-suited to compact, always-listening devices.
When designing with this MCU, allocate at least one full SSOP-20 footprint pattern with adequate copper for the exposed-pad thermal pad when present, and follow Microchip's recommended 0.1uF + 10uF decoupling guidance adjacent to VDD/AVDD/VSS. The MCLR pin should be pulled high through a 10k resistor with the optional 100nF cap for in-circuit serial programming (ICSP).
This page consolidates distributor pricing, parametric comparison, and practical design notes not always surfaced in the manufacturer datasheet. Engineers can quickly validate drop-in alternatives, evaluate same-family variants, and confirm lifecycle and compliance status in one view.
Drop-in alternatives for PIC18F14K22T-I/SS — 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 PIC18F14K22T-I/SS (same form factor and footprint) — differing in Core Architecture, Package, Timers, ADC, MSL Level.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F14K22-I/SS
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →PIC18F14K22T-I/SO
✅ Drop-In✓ In Stock
$1.48 / Unit
View Datasheet →PIC18F14K22T-I/ML
✅ Drop-In✓ In Stock
$1.58 / Unit
View Datasheet →PIC18F14K22-E/SS
✅ Drop-In✓ In Stock
$2.65 / Unit
View Datasheet →PIC18F13K22T-I/SS
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC18F13K22-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F14K22T-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC Harvard |
| Series | PIC18F1XK22 (PIC18F14K22) |
| Program Memory (Flash) | 16 KB (8K x 14 words) |
| Data SRAM | 512 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| Supply Voltage (VDD) | 1.8 V to 5.5 V |
| I/O Pins | 16 |
| A/D Converter | 10-bit, 12 channels |
| Timers | 3 (Timer0/1/2) |
| PWM Modules | Enhanced CCP, 3 outputs |
| Communication | EUSART, MSSP (SPI / I2C) |
| Package | 20-pin SSOP (0.209 in / 5.30 mm) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Mounting Type | Surface Mount |
| Low-Power Technology | nanoWatt XLP |
| MSL Level | 1 (unlimited) |
| RoHS Status | Compliant |
| Internal Oscillator | 16 MHz / 32 kHz selectable |
| Self-Programmable | Yes (Flash) |
PIC18F14K22T-I/SS Pin Configuration
| Pin 1 | RA5/T1CKI/OSC2/CLKO — PORTA bit 5 / Timer1 clock input / oscillator output / clock output; analog input AN4 |
| Pin 2 | RA4/T1G/HLVDIN/OSC1/CLKIN — PORTA bit 4 / Timer1 gate / HLVD input / oscillator input / external clock in; analog input AN3 |
| Pin 3 | RA3/MCLR/VPP — PORTA bit 3 / Master Clear (reset, active low) / programming voltage input |
| Pin 4 | RC5/CCP1/P1A — PORTC bit 5 / Enhanced CCP1 output / PWM output; AN10 |
| Pin 5 | RC4/C2OUT — PORTC bit 4 / Comparator 2 output |
| Pin 6 | RC3/SCL/SCK — PORTC bit 3 / I2C clock / SPI clock |
| Pin 7 | RC2/SDA/SDI — PORTC bit 2 / I2C data / SPI data in |
| Pin 8 | RC1/CCP2/P1B — PORTC bit 1 / Enhanced CCP2 output / PWM output; AN9 |
| Pin 9 | RC0/SOSCO — PORTC bit 0 / Secondary oscillator output; AN8 |
| Pin 10 | VSS — Ground reference |
| Pin 11 | RA7/OSC1/CLKIN — PORTA bit 7 / oscillator input / external clock in (HS mode); AN6 |
| Pin 12 | RA6/OSC2/CLKOUT — PORTA bit 6 / oscillator output / clock out; AN5 |
| Pin 13 | VDD — Positive supply (1.8V to 5.5V) |
| Pin 14 | RB7/ICSPDAT/AN11 — PORTB bit 7 / ICSP data; analog input AN11 |
| Pin 15 | RB6/ICSPCLK — PORTB bit 6 / ICSP clock; general purpose I/O |
| Pin 16 | RB5/AN9/T1G — PORTB bit 5 / analog input AN9 / Timer1 gate; general purpose I/O |
| Pin 17 | RB4/AN8/P1D — PORTB bit 4 / analog input AN8 / PWM output 1D |
| Pin 18 | RB3/AN7/CCP2/PGM — PORTB bit 3 / analog input AN7 / CCP2 / LVP programming |
| Pin 19 | RB2/AN6 — PORTB bit 2 / analog input AN6; general purpose I/O |
| Pin 20 | RB1/AN5/SDI/SDA — PORTB bit 1 / analog input AN5 / SPI data in / I2C data; INT1 |
Typical Applications
PIC18F14K22T-I/SS is suitable for 6 applications: Battery-Powered IoT Sensor Endpoints, Industrial Sensor Conditioning & Monitoring, Consumer Appliance User-Interface Controllers, HVAC Control Panels, Wireless Remote Controls & Beacons, USB HID/CDC Bridge Modules.
Battery-Powered IoT Sensor Endpoints
The PIC18F14K22T-I/SS is well-matched to battery-powered IoT sensor endpoints where its nanoWatt XLP sleep currents in the low-nanoamp range extend battery life across years of duty-cycled operation. The 64MHz/16 MIPS core wakes fast enough to read a sensor, transmit a packet (LoRaWAN, BLE beacon, sub-GHz proprietary), and return to sleep within milliseconds. The 1.8V to 5.5V supply range supports direct connection to a single Li-ion cell or 2x/3x AA alkaline packs without a boost regulator, simplifying the power tree and reducing BOM cost. Sixteen GPIO and a 10-bit 12-channel ADC handle multiple analog sensors (temperature, humidity, battery voltage monitoring) concurrently. The 20-pin SSOP footprint suits small sensor modules under 20mm x 20mm.
Recommended
Industrial Sensor Conditioning & Monitoring
The PIC18F14K22T-I/SS suits industrial sensor-conditioning front ends and remote-monitoring nodes thanks to its -40C to +85C industrial temperature range, 10-bit 12-channel ADC with multiple input ranges, and EUSART/MSSP for RS-485 or I2C sensor networks. The hardware PWM module drives actuator interfaces (valves, heaters, motor speed references) at deterministic 1-MHz PWM resolution. Internal 16MHz oscillator eliminates external crystals for cost-sensitive nodes; the dual-oscillator design supports fail-safe operation when the primary clock fails. Combined with 16KB Flash and 512 bytes of RAM, the device holds state-machine-style control loops with calibration tables and 256 bytes of EEPROM for non-volatile configuration storage across power cycles.
Recommended
Consumer Appliance User-Interface Controllers
The PIC18F14K22T-I/SS delivers responsive control for appliance UI panels (washing machines, dishwashers, coffee machines, microwave ovens) where a small MCU drives an LCD or seven-segment display, scans a keypad matrix, and modulates relays. Its 64MHz CPU and enhanced PWM outputs handle brushed/brushless motor control signals in fan and pump drives, while the 16 GPIO can multiplex both display and key inputs efficiently. The 16KB Flash accommodates user-interface state machines with multiple language support and over-the-air firmware updates via self-programmable Flash. The wide 1.8V-5.5V supply range permits direct connection to rectified AC-derived rails with simple linear regulation, reducing BOM cost.
Recommended
HVAC Control Panels
The PIC18F14K22T-I/SS fits HVAC control panels and thermostats where it can sample multiple analog temperature/humidity channels via its 10-bit ADC, drive a character LCD or OLED through SPI, and modulate fan/valve outputs with PWM. Its nanoWatt XLP sleep modes reduce standby consumption below 1uA, allowing battery-backed thermostats to operate for years on 2x AA cells. The EUSART supports Wi-Fi/BLE module connections (such as the RN4870) for smart thermostat features, while the MSSP handles I2C sensors. The 256-byte EEPROM retains user schedules across power cycles, and 16KB Flash holds full HVAC state machines with PID control algorithms.
Recommended
Wireless Remote Controls & Beacons
The PIC18F14K22T-I/SS is a strong fit for battery-powered wireless remote controls and BLE beacons thanks to its nanoWatt XLP technology achieving tens of nanoamps in sleep mode, and its fast 64MHz wake-up enabling sub-millisecond packet transmissions when a button is pressed or a beacon event fires. The 16KB Flash accommodates stack/protocol libraries for proprietary RF, sub-GHz, or BLE-link layers. Six CCP/PWM channels can drive status LEDs and haptic feedback, and the 256-byte EEPROM preserves pairing information across battery changes. The wide 1.8V to 5.5V supply range accommodates CR2032 coin cells (3V) or 2x AAA alkaline packs without boost regulators.
Recommended
USB HID/CDC Bridge Modules
The PIC18F14K22T-I/SS integrates USB 2.0 Full-Speed (12 Mbps) via its internal SIE peripheral in the PIC18F1XK22 family, enabling USB Human Interface Device (HID), Communication Device Class (CDC), or vendor-specific bridge modules without external USB interface chips. Application examples include USB-to-UART bridge dongles, USB mouse/keyboard controllers, and USB-MIDI adapters. The 64MHz CPU handles USB protocol stack and buffering, and the 16KB Flash accommodates Microchip's USB stack plus user application logic. The 10-bit ADC and 16 GPIO offer additional analog/digital capability beyond basic USB bridges for combo designs such as test instruments or data loggers.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F14K22T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F14K22-I/SS | PIC18F14K22-E/SS | PIC18F13K22T-I/SS | PIC18F13K22-I/SS | PIC18F14K22T-I/ML | PIC18F14K22T-I/SO |
|---|---|---|---|---|---|---|---|
| Package | SSOP-20 | SSOP-20 (same) | SSOP-20 (same) | SSOP-20 (same) | SSOP-20 (same) | SSOP-20 (same) | SSOP-20 (same) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB | 16 KB (same) | 16 KB (same) | 8 KB (-50%) | 8 KB (-50%) | 16 KB (same) | 16 KB (same) |
| SRAM | 512 bytes | 512 bytes (same) | 512 bytes (same) | 256 bytes (-50%) | 256 bytes (-50%) | 512 bytes (same) | 512 bytes (same) |
| Max CPU Speed | 64 MHz (16 MIPS) | 64 MHz / 16 MIPS (same) | 64 MHz / 16 MIPS (same) | 64 MHz / 16 MIPS (same) | 64 MHz / 16 MIPS (same) | 64 MHz / 16 MIPS (same) | 64 MHz / 16 MIPS (same) |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V (same) | 1.8 V to 5.5 V (same) | 1.8 V to 5.5 V (same) | 1.8 V to 5.5 V (same) | 1.8 V to 5.5 V (same) | 1.8 V to 5.5 V (same) |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (same) | -40 C to +125 C (Extended, wider) | -40 C to +85 C (same) | -40 C to +85 C (same) | -40 C to +85 C (same) | -40 C to +85 C (same) |
| EEPROM | 256 bytes | 256 bytes (same) | 256 bytes (same) | 256 bytes (same) | 256 bytes (same) | 256 bytes (same) | 256 bytes (same) |
| A/D Converter | 10-bit, 12 channels | 10-bit, 12 ch (same) | 10-bit, 12 ch (same) | 10-bit, 11 ch (close) | 10-bit, 11 ch (close) | 10-bit, 12 ch (same) | 10-bit, 12 ch (same) |
| I/O Pins | 16 | 16 (same) | 16 (same) | 16 (same) | 16 (same) | 16 (same) | 16 (same) |
Key Differentiators
- Highest memory capacity in PIC18F13K22 vs PIC18F14K22 family (vs PIC18F13K22T-I/SS)
- Industrial -40C to +85C vs extended -40C to +125C temperature range selection (vs PIC18F14K22-E/SS)
- Tape & Reel vs Tube packaging for automated assembly (vs PIC18F14K22-I/SS)
Design Notes
Place a 0.1uF ceramic decoupling capacitor as close as physically possible to the VDD pin (pin 13) and a bulk 10uF tantalum or ceramic capacitor on the same VDD rail. For the AV-capable analog inputs, add a small ferrite bead between digital VDD and AVDD when present, plus an additional 0.1uF cap on AVDD. The PIC18F14K22's nanoWatt XLP modes draw only tens of nanoamps in sleep with watchdog disabled; isolate the voltage regulator with a Schottky diode if your circuit uses both battery backup and main supply to prevent backfeed. Avoid switching the MCU's VDD faster than the BOR rise time to prevent unintended resets during brown-out recovery.
The 20-pin SSOP package has a 0.65mm pin pitch, requiring careful PCB layout. Use 0.30mm-wide traces and a 0.40mm solder mask opening; verify the land pattern against the SSOP-20 IPC-7351 nominal footprint. Keep analog input traces short and routed away from digital switching lines (PWM, oscillator) to minimize ADC noise coupling. Place a 4-layer PCB with a dedicated ground plane under the SSOP-20 footprint to reduce EMI and improve thermal dissipation. For SSOP-20, the package height is approximately 1.75mm; account for this in enclosure design where board-to-cover clearance matters.
Do not leave MCLR floating: tie it to VDD through a 10k resistor (and optional 100nF cap for ICSP) - a floating MCLR causes random resets from noise. When using the internal 16MHz oscillator, configure the IRCF<2:0> and SCS bits correctly or the CPU will run at 500 kHz default. The EUSART baud rate error at high bit rates with the 16MHz HFINTOSC can exceed 2%; use the PLLEN bit and 64MHz clock for accurate RS-232/RS-485 comms. Watchdog timer, if enabled in software, must be periodically cleared or it will reset the MCU; an unintentional WDT reset is a common debugging issue.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; choose PIC18F14K22-E/SS for extended industrial temperature. Halogen-free status not explicitly stated in verified data. Lead-free / Pb-free matte-tin finish.
