PIC18F14K22-I/SS - 8-bit MCU, 16KB Flash, 64MHz, XLP | Microchip
MPN: PIC18F14K22-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.25 | $3.25 |
| 10 | $2.93 | $29.30 |
| 100 | $2.61 | $261.00 |
| 500 | $2.29 | $1,145.00 |
| 1,000 | $1.95 | $1,950.00 |
PIC18F14K22-I/SS Overview
An 8-bit microcontroller (MCU) is a self-contained computing unit on a single integrated circuit, integrating a CPU, program memory (Flash), data memory (RAM), non-volatile storage (EEPROM), and a rich peripheral set. MCUs form the lowest tier of embedded computing hierarchy: microcontroller -> embedded processor -> SoC -> computing platform, and are the workhorses of IoT, automotive body electronics, industrial control, and consumer appliances. The PIC18 architecture is C-compiler optimized and offers interrupt-driven operation, making firmware development straightforward for both assembly and C toolchains.
Key features of the PIC18F14K22-I/SS include 16 KB (8K × 16) Flash, 512 bytes SRAM, 256 bytes EEPROM, 12-channel 10-bit ADC, multiple PWM modules, UART/SPI/I2C peripherals, and nanoWatt XLP technology that delivers sleep currents below 100 nA typical. The wide operating voltage range from 1.8 V to 5.5 V (full-performance above 2.3 V) and industrial temperature range of -40 °C to +85 °C make this device versatile for both battery-powered and mains-powered designs.
From an architectural standpoint, the PIC18F14K22 uses an enhanced Harvard architecture with separate program and data buses, a 16-bit instruction word, and a hardware multiplier. The internal 16 MHz oscillator (or 64 MHz via 4× PLL) eliminates the need for external crystal in many applications, reducing BOM cost and PCB area. The XLP technology adds ultra-low-power sleep modes with peripheral activity monitoring, enabling years of operation from a single coin-cell battery.
Typical applications for the PIC18F14K22-I/SS include low-power sensor nodes, portable consumer electronics, home automation devices, automotive body controllers, and small industrial control modules. Designers commonly use it where moderate Flash/RAM budgets are sufficient but extreme low-power sleep behavior is essential, such as remote controls, battery-backed thermostats, and wearable peripherals.
When designing with this MCU, allocate sufficient decoupling (typically 100 nF near VDD plus 10 µF bulk), respect the in-circuit serial programming (ICSP) pins (PGC/PGD), and review the configuration bits carefully because incorrect oscillator settings can brick the part. The 20-pin SSOP footprint is also available in SOIC (PIC18F14K22-I/SO) and PDIP (PIC18F14K22-I/P), giving PCB layout flexibility for prototyping and production.
This page synthesizes verified distributor pricing from DigiKey, Mouser, LCSC, and Octopart; same-brand SSOP-package drop-in variants; and practical design notes that go beyond the manufacturer datasheet, providing a one-stop engineering reference for component selection.
Drop-in alternatives for PIC18F14K22-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 PIC18F14K22-I/SS (same form factor and footprint) — differing in Package, Timers, Core Architecture, ADC, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F14K22-I/SO
✅ Drop-In✓ In Stock
$0.96 / Unit
View Datasheet →PIC18F13K22-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F14K22-E/SS
✅ Drop-In✓ In Stock
$2.65 / Unit
View Datasheet →PIC18LF14K22-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F13K22-E/SS
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC18F13K22T-I/SS
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC18F14K22-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 8-bit enhanced Harvard |
| Program Memory (Flash) | 16 KB (8K x 16) |
| Data Memory (SRAM) | 512 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Clock | 64 MHz (16 MHz with 4x PLL) |
| Operating Voltage Range | 1.8 V to 5.5 V (1.8 V - 3.6 V for XLP LF; full performance >=2.3 V) |
| Operating Temperature Range | -40 C to +85 C (Industrial, 'I' suffix) |
| Package | 20-pin SSOP (5.30 mm body, 0.65 mm pitch) |
| Mounting Type | Surface Mount |
| Number of I/O Pins | 17 (maximum) |
| ADC | 10-bit, up to 12 channels |
| Timers | 4 x 8/16-bit (Timer0/1/2/3) |
| PWM Modules | 2 x 10-bit PWM (Enhanced CCP + CCP) |
| Communication Interfaces | EUSART (RS-232/RS-485), SPI, I2C (Master/Slave) |
| Low-Power Technology | nanoWatt XLP (sleep current typically <100 nA) |
| Internal Oscillator | 16 MHz HF + 31 kHz LF selectable |
| ICSP (In-Circuit Serial Programming) | Yes (PGC/PGD) |
| MSL Level | 1 (unlimited floor life) |
| RoHS Status | Compliant |
PIC18F14K22-I/SS Pin Configuration
| Pin 1 | RA5 — Digital I/O / analog input AN4 / VDD-on-RA5 |
| Pin 2 | RA0 — Digital I/O / analog input AN0 |
| Pin 3 | RA1 — Digital I/O / analog input AN1 |
| Pin 4 | RA2 — Digital I/O / analog input AN2 |
| Pin 5 | RA3 — Digital I/O / analog input AN3 / MCLR (reset input) |
| Pin 6 | RA4 — Digital I/O / analog input AN4 / VSS-on-RA4 |
| Pin 7 | VDD — Positive supply voltage |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RB4 — Digital I/O / analog input AN11 / SDA (I2C data) |
| Pin 10 | RB5 — Digital I/O / analog input AN9 / RX (EUSART receive) |
| Pin 11 | RB6 — Digital I/O / PGC (ICSP clock) |
| Pin 12 | RB7 — Digital I/O / PGD (ICSP data) |
| Pin 13 | RC0 — Digital I/O / analog input AN10 |
| Pin 14 | RC1 — Digital I/O / analog input AN8 |
| Pin 15 | RC2 — Digital I/O / analog input AN6 / PWM1 |
| Pin 16 | RC3 — Digital I/O / analog input AN7 / PWM2 |
| Pin 17 | RC4 — Digital I/O / SDA / SCL alt |
| Pin 18 | RC5 — Digital I/O / SDO (SPI) |
| Pin 19 | RC6 — Digital I/O / TX (EUSART transmit) / SCK (SPI clock) |
| Pin 20 | RC7 — Digital I/O / SDI (SPI data in) |
Typical Applications
PIC18F14K22-I/SS is suitable for 7 applications: Battery-Powered IoT Sensor Node, Home Automation / Smart Home Device, Automotive Body Electronics Subsystem, Industrial Sensor Conditioning Module, Portable Consumer Electronics Accessory, Educational and Hobbyist Development Platform, Lighting Control / LED Driver Controller.
Battery-Powered IoT Sensor Node
The PIC18F14K22-I/SS is purpose-built for low-duty-cycle IoT sensor nodes powered by coin-cell or AA batteries. Its nanoWatt XLP technology delivers typical sleep currents below 100 nA with the on-board 31 kHz LF oscillator ticking, allowing the MCU to wake briefly, sample the 10-bit ADC, transmit via the EUSART or SPI-connected radio, and return to sleep. The 1.8 V to 5.5 V supply range lets it run directly from two alkaline AAs or a single CR2032 cell. With 16 KB of Flash and 512 B of SRAM the part comfortably hosts an interrupt-driven C application that periodically reads temperature, humidity, or motion sensors and forwards results. Engineers commonly pair it with sub-GHz transceivers like the Microchip MRF89XA or 2.4 GHz modules for long-range LoRa-style telemetry.
Recommended
Home Automation / Smart Home Device
In smart-home controllers, the PIC18F14K22-I/SS acts as a low-cost slave or co-processor handling local IO, indicator LEDs (via PWM), and keypad scanning. The 12-channel 10-bit ADC can read multiple analog sensors (light, gas, potentiometer sliders), while the EUSART and I2C peripherals talk to host SoCs or upstream Wi-Fi/BLE modules. The C-compiler-optimized PIC18 instruction set allows rapid firmware iteration in MPLAB X IDE with XC8, shortening time-to-market. With 17 available I/O the device can drive RGB status LEDs, relay drivers, and EEPROM-backed configuration storage. Its SSOP-20 footprint fits inside compact wall-switch and smart-plug enclosures.
Recommended
Automotive Body Electronics Subsystem
Within automotive body electronics (lighting controllers, HVAC trim panels, accessory multiplexers), the PIC18F14K22-I/SS provides deterministic 8-bit control at 12 V battery-tap voltages via external regulators. The 64 MHz CPU and 16 KB Flash are sufficient for CAN-aware signal-conditioning firmware, although for full CAN bus communication designers typically step up to a PIC18F25K80 or dsPIC33 part. The 20-pin SSOP supports space-constrained PCB layouts, and the industrial temperature grade ('I' suffix, -40C to +85C) covers most cabin environments. Designers use the 10-bit ADC to monitor current-sense amplifiers, while PWM drives LED dimming transistors.
Recommended
Industrial Sensor Conditioning Module
The PIC18F14K22-I/SS is a strong fit for industrial 4-20 mA loop-powered sensor transmitters, RTD/thermocouple front-ends, and process-control modules. Its 10-bit ADC with selectable reference voltages can digitize bridge sensors and thermocouple amplifiers; the EUSART streams 4-20 mA HART-compatible or RS-485 telemetry, while the I2C bus connects to digital temperature ICs and EEPROM for calibration storage. The wide operating voltage (1.8 V - 5.5 V) eases integration with industrial 24 V rails via small switching regulators. The industrial temperature grade and robust SSOP-20 package suit factory-floor deployments.
Recommended
Portable Consumer Electronics Accessory
For portable consumer products such as fitness bands, remote controls, wireless gamepads, and small audio accessories, the PIC18F14K22-I/SS offers the right balance of low power, modest compute, and tiny package. Its nanoWatt XLP sleep modes extend battery life, while the 16 KB Flash comfortably stores BLE-pairing logic, button-debounce state machines, and LED PWM patterns. The 17 I/O pins drive capacitive-touch pads (via CTMU peripheral) and small OLED displays via SPI. The SSOP-20 footprint measures only 5.3 mm wide, fitting inside ultra-thin plastic enclosures.
Recommended
Educational and Hobbyist Development Platform
The PIC18F14K22-I/SS is widely used in educational settings and hobbyist projects because it pairs the forgiving PIC18 architecture with a low pin-count SSOP-20 footprint that is easy to breadboard with SOIC adapter boards. MPLAB X IDE and the free XC8 compiler support this device out of the box, and the generous 16 KB Flash tolerates experimentation. The integrated ICSP (In-Circuit Serial Programming) interface allows PICkit programmers to flash and debug the device on a target board without removing the MCU. The 64 MHz CPU and rich peripheral set make it ideal for teaching timers, ADC, PWM, and serial communication fundamentals.
Recommended
Lighting Control / LED Driver Controller
The PIC18F14K22-I/SS serves as a digital controller in LED lighting modules where it generates PWM dimming signals, reads ambient light sensors via the ADC, and communicates with upstream controllers via DMX, DALI, or 0-10 V analog interfaces. The 16 KB Flash holds multi-channel lighting effect sequences and configuration tables, while the 256-byte EEPROM stores trim and calibration values. The 64 MHz clock provides PWM resolution and frequency suitable for high-quality dimming without visible flicker. The wide 1.8 V to 5.5 V supply range accommodates both 3.3 V logic and 5 V analog front ends.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F14K22-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F14K22-I/SO | PIC18F13K22-I/SS | PIC18F14K22-E/SS | PIC18LF14K22-I/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SSOP-20 | SOIC-20 (different footprint - PCB land pattern differs) | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same |
| Program Memory (Flash) | 16 KB | 16 KB | 8 KB | 16 KB | 16 KB |
| SRAM | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 512 bytes |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Maximum CPU Clock | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz (lower at VDD<2.3V) |
| Operating Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | -40C to +85C |
| Low-Power (XLP) Sleep Current | Typical <100 nA | Typical <100 nA | Typical <100 nA | Typical <100 nA | Typical <50 nA (optimized XLP) |
Key Differentiators
- Larger 16 KB Flash for application headroom and OTA bootloader staging (vs PIC18F13K22-I/SS)
- Wide 1.8 V to 5.5 V supply range for flexible power architectures (vs PIC18LF14K22-I/SS)
- nanoWatt XLP sleep current below 100 nA typical for battery longevity (vs PIC18F14K22-E/SS)
- Industrial -40C to +85C grade matches the broadest application envelope (vs PIC18F14K22-E/SS)
Design Notes
Estimated (inputs: VDD=3.3V, IOUT=20mA active, 1 uA sleep): supply decoupling is critical for stable PIC18F14K22-I/SS operation. Place a 100 nF X7R ceramic capacitor within 5 mm of the VDD pin (pin 7) and a 10 uF bulk capacitor on the same rail. For sleep-current-sensitive battery designs, verify leakage paths on any ADC input pin used during deep sleep, because each analog channel is multiplexed through the same sample-and-hold switch and can leak a few hundred nA if left connected to a high-impedance source.
Reserve space for ICSP programming header (PGC pin 11, PGD pin 12) on every prototype PCB. Even production designs benefit from a 6-pin in-circuit serial programming header because field firmware updates are common. Keep PGC/PGD traces short and away from switching signals to avoid programming glitches. Add a 10 kohm pull-up on MCLR (pin 5) per Microchip's recommended reset circuit, with optional 100 nF to VSS for ESD filtering.
A common mistake is leaving the CONFIG1H oscillator configuration bits at the default after programming. Per Microchip datasheet, FOSC must be explicitly set to INTIO67 (internal oscillator, RA6/RA7 as IO) or HS/HSPLL (external crystal with PLL) before firmware behavior matches the design intent. Failing to do so leaves the MCU expecting an external crystal and the board appears dead. Always verify configuration bits with MPLAB X IDE and program them as part of the firmware image, not as a separate step.
Estimated (inputs: SSOP-20 with 4-layer PCB, theta-JA approx 90 C/W): the PIC18F14K22-I/SS at full 64 MHz core clock and all peripherals active dissipates approximately 15 to 25 mW, which is well below the SSOP-20 thermal limit. However, in enclosed industrial environments above 60 C ambient, derate by ensuring the device is not the primary heat source. The XLP sleep modes typically draw <100 nA so the device itself contributes negligible thermal stress; instead, focus thermal management on adjacent power regulators and drivers.
For ADC accuracy, separate analog traces (AN0-AN11) from digital switching lines such as PWM outputs and clock traces. Use a ground pour under the device tied to VSS (pin 8) to provide a low-impedance return path. If using the ADC with high-impedance sensors (>=10 kohm), increase acquisition time in the ADCON register to allow the sample capacitor to fully charge - Microchip recommends minimum 1.4 us acquisition at 5V for typical 10 kohm source impedance.
Compliance Information
RoHS and REACH compliant per Microchip product page declarations. Lead-free and halogen-free per MSL-1 SSOP-20 package. AEC-Q100 not applicable because the 'I' grade is commercial/industrial rather than automotive-qualified; the 'E' grade is suitable for non-safety-critical automotive systems but lacks full AEC-Q100 documentation.
