PIC18F44K22-I/MV - 16KB Flash 8-bit MCU | Microchip
MPN: PIC18F44K22-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.62 | $2.62 |
| 10 | $2.34 | $23.40 |
| 100 | $1.92 | $192.00 |
| 500 | $1.71 | $855.00 |
| 1,000 | $1.55 | $1,550.00 |
PIC18F44K22-I/MV Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for deterministic real-time control with modest memory and pin counts. PIC18F-series parts sit at the upper end of Microchip's 8-bit portfolio, combining C-friendly Harvard architecture, hardware multiplier, and rich peripheral integration. Within the broader taxonomy, the PIC18F44K22 belongs to the microcontroller category of integrated circuits, serving embedded control applications ranging from consumer appliances to industrial sensor hubs.
Key features include a wide 2.3V to 5.5V supply range (functional down to 1.8V with internal regulator), an integrated 16 MHz to 64 MHz HFINTOSC with PLL, 36 digital I/O pins, and ultra-low-power sleep currents in the nanoampere range. The K22 series adds CTMU charge-time measurement, multiple PWM channels, and enhanced capture/compare peripherals for motor and lighting control.
Architecturally, the device combines a RISC core with a hardware 8x8 multiplier, enabling efficient C code execution, and provides 256-byte data EEPROM for non-volatile parameter storage. The 32-level hardware stack and 31 interrupt sources make it well-suited to multi-tasking control loops. On-chip debugging is supported via two dedicated ICSP pins, allowing MPLAB X IDE integration without additional emulator hardware.
Typical applications include low-power sensor nodes, IoT edge devices, white-goods motor control, LED lighting controllers, and industrial instrumentation requiring extended battery life. The compact UQFN-40 footprint also supports space-constrained wearables and handheld products.
When designing with this part, select decoupling capacitors close to VDD/AVDD pins and route the 48 MHz HFINTOSC trace away from analog ADC inputs to minimize coupling. Use the internal regulator mode to reduce external components, and verify the UQFN thermal pad is soldered to a sufficient copper pour for reliable operation at high toggle rates.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, giving procurement and design engineers a single reference for evaluating the PIC18F44K22-I/MV against direct substitutes in the PIC18F family.
Drop-in alternatives for PIC18F44K22-I/MV — 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 PIC18F44K22-I/MV (same form factor and footprint) — differing in Package, Core, ADC, Program Memory (Flash), Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F43K22-I/MV
✅ Drop-In✓ In Stock
$1.08 / Unit
View Datasheet →PIC18F44K22T-I/MV
✅ Drop-In✓ In Stock
$1.71 / Unit
View Datasheet →PIC18F44K22-E/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F44K20-I/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F44K22-I/P
✅ Drop-In✓ In Stock
$1.36 / Unit
View Datasheet →PIC18F44K22-I/MV Maximum Ratings & Electrical Characteristics
| Core | PIC18 8-bit RISC |
| Program Memory (Flash) | 16 KB (8K x 16) |
| RAM | 768 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Frequency | 64 MHz |
| Operating Voltage Range | 2.3 V to 5.5 V (1.8 V with internal regulator) |
| I/O Pins | 36 |
| ADC | 10-bit, up to 28 channels |
| Timers | 4x 8/16-bit |
| Communication | 2x EUSART, 2x MSSP (SPI/I2C) |
| PWM Channels | Up to 5 |
| Comparators | 2 |
| Package | 40-pin UQFN (5x5 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) |
| RoHS Status | Compliant |
PIC18F44K22-I/MV Pin Configuration
| Pin 1 | RA2 — PORTA bit 2 (analog/digital I/O) |
| Pin 2 | RA3 — PORTA bit 3 (analog/digital I/O) |
| Pin 3 | RA4 — PORTA bit 4 (analog/digital I/O) |
| Pin 4 | RA5 — PORTA bit 5 (analog/digital I/O) |
| Pin 5 | RA6 — PORTA bit 6 (OSC2/CLKOUT) |
| Pin 6 | RA7 — PORTA bit 7 (OSC1/CLKIN) |
| Pin 7 | VDD — Positive supply voltage |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RB0 — PORTB bit 0 (interrupt-on-change) |
| Pin 10 | RB1 — PORTB bit 1 (interrupt-on-change) |
| Pin 11 | RB2 — PORTB bit 2 (interrupt-on-change) |
| Pin 12 | RB3 — PORTB bit 3 (interrupt-on-change) |
| Pin 13 | RB4 — PORTB bit 4 (interrupt-on-change) |
| Pin 14 | RB5 — PORTB bit 5 (interrupt-on-change) |
| Pin 15 | RB6 — PORTB bit 6 (ICSP programming clock) |
| Pin 16 | RB7 — PORTB bit 7 (ICSP programming data) |
| Pin 17 | RC0 — PORTC bit 0 |
| Pin 18 | RC1 — PORTC bit 1 |
| Pin 19 | RC2 — PORTC bit 2 |
| Pin 20 | RC3 — PORTC bit 3 |
| Pin 21 | RC4 — PORTC bit 4 |
| Pin 22 | RC5 — PORTC bit 5 |
| Pin 23 | RC6 — PORTC bit 6 (TX) |
| Pin 24 | RC7 — PORTC bit 7 (RX) |
| Pin 25 | RE3 — PORTE bit 3 (MCLR/VPP) |
| Pin 26 | RD0 — PORTD bit 0 |
| Pin 27 | RD1 — PORTD bit 1 |
| Pin 28 | RD2 — PORTD bit 2 |
| Pin 29 | RD3 — PORTD bit 3 |
| Pin 30 | RD4 — PORTD bit 4 |
| Pin 31 | RD5 — PORTD bit 5 |
| Pin 32 | RD6 — PORTD bit 6 |
| Pin 33 | RD7 — PORTD bit 7 |
| Pin 34 | AVDD — Analog positive supply |
| Pin 35 | AVSS — Analog ground |
| Pin 36 | RE0 — PORTE bit 0 |
| Pin 37 | RE1 — PORTE bit 1 |
| Pin 38 | RE2 — PORTE bit 2 |
| Pin 39 | VDD — Positive supply voltage (second) |
| Pin 40 | VSS — Ground reference (second) |
Typical Applications
PIC18F44K22-I/MV is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, White-Goods Motor and Appliance Control, LED Lighting Controllers and Dimmers, Industrial Sensor Hubs and Data Loggers, Handheld Consumer Electronics, Automotive Body and Comfort Electronics (non-safety).
Battery-Powered IoT Sensor Nodes
The PIC18F44K22-I/MV is well matched to coin-cell sensor nodes thanks to nanoWatt XLP technology with sub-100 nA sleep retention and roughly 1 uA/MIPS active current. The integrated 16 KB Flash accommodates BLE/Zigbee stack fragments or LoRaWAN drivers, while the 10-bit ADC up to 28 channels reads multiple sensors without external multiplexing. Placed at the heart of a wireless sensor hub, it runs years on a CR2032 cell. Unlike Cortex-M0+ parts, the 8-bit PIC18 delivers deterministic interrupt latency critical for low-power protocols.
Recommended
White-Goods Motor and Appliance Control
The PIC18F44K22-I/MV's 5 PWM channels, 2 comparators, and 36 GPIO make it a strong fit for washing-machine motor drives, dishwasher pumps, and refrigerator compressors. The CTMU peripheral supports cap-touch user interfaces for front-panel controls. At 64 MHz, the C-friendly core executes speed-control loops with deterministic cycle time. Compared with discrete 8051 designs, the K22 integrates peripherals and Flash, reducing BOM cost in appliance-grade white goods.
Recommended
LED Lighting Controllers and Dimmers
Lighting control demands smooth PWM dimming without flicker, and the PIC18F44K22-I/MV delivers with 5 hardware PWM outputs and configurable dead-band control. The 64 MHz core supports DALI, DMX512, or 0-10 V dimming protocols via the EUSART or MSSP. With 2.3-5.5 V operation, the part can run directly from rectified 5 V or 3.3 V rails. The compact UQFN-40 footprint supports ultra-slim fixture housings. Replacement of legacy 16F-series parts benefits from doubled Flash and nanoWatt sleep.
Recommended
Industrial Sensor Hubs and Data Loggers
Industrial data loggers benefit from the PIC18F44K22-I/MV's 10-bit ADC with up to 28 channels, 256-byte EEPROM for non-volatile parameter storage, and industrial -40C to +85C rating. The dual EUSART supports RS-485 or RS-232 host links, while MSSP peripherals drive SPI/I2C sensors. With 16 KB Flash, complex Modbus or proprietary protocol stacks fit on-chip. Compared with smaller PIC16F parts, the K22 adds hardware multiplier and DMA-like peripheral management.
Recommended
Handheld Consumer Electronics
The PIC18F44K22-I/MV's compact 5x5 mm UQFN footprint and low active power suit battery-powered toys, remote controls, and personal-care devices. With internal 64 MHz HFINTOSC, no external crystal is required, saving both PCB space and BOM cost. The 36 GPIO easily drives segment LCDs, keypads, and BLE/wireless companion modules via UART. Unlike larger 44-pin TQFP parts, the UQFN-40 enables handheld form factors where every mm counts.
Recommended
Automotive Body and Comfort Electronics (non-safety)
For non-safety automotive body modules such as seat controllers, mirror adjusters, or interior lighting, the PIC18F44K22-I/MV's automotive-grade sibling PIC18F44K22T-I/MV is recommended. The same PIC18 core, peripherals, and UQFN-40 footprint simplify migration from industrial to AEC-Q100 qualified parts. With LIN-capable EUSART, the device interfaces to body controllers via the LIN bus. Compared with full automotive MCUs, the K22 offers a cost-effective path for non-safety nodes.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F44K22-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F43K22-I/MV | PIC18F44K22T-I/MV | PIC18F44K22-E/MV | PIC18F44K20-I/MV | PIC18F44K22-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin UQFN (5x5) | 40-pin UQFN (5x5) - same | 40-pin UQFN (5x5) - same | 40-pin UQFN (5x5) - same | 40-pin UQFN (5x5) - same | 40-pin PDIP (cross-package) |
| Program Memory (Flash) | 16 KB | 8 KB (-50%) | 16 KB (same) | 16 KB (same) | 8 KB (-50%) | 16 KB (same) |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| RAM | 768 B | 768 B | 768 B | 768 B | 768 B | 768 B |
| Operating Voltage Range | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C |
| I/O Pins | 36 | 36 | 36 | 36 | 36 | 36 |
Key Differentiators
- Larger Flash than lower-tier same-package siblings (vs PIC18F43K22-I/MV)
- Pin-compatible 8 KB migration path available (vs PIC18F44K20-I/MV)
- Extended-temperature variant available in same package (vs PIC18F44K22-E/MV)
Design Notes
Estimated: at 5 V VDD and 64 MHz active, the PIC18F44K22-I/MV draws roughly 8-10 mA. In sleep mode with peripherals disabled, current drops below 100 nA thanks to nanoWatt XLP. Use a 100 nF decoupling capacitor as close as possible to each VDD/VSS pair, plus a bulk 10 uF on the main rail. Enable the internal regulator mode when running below 3 V to maintain full 64 MHz operation. Disable unused peripherals in firmware to minimize active current.
The 40-pin UQFN (5x5) package has a central exposed thermal pad that MUST be soldered to a ground-plane copper pour of at least 25 mm^2. Use an array of thermal vias (typically 9-12 vias at 0.3 mm drill) under the pad to connect top and bottom ground layers. Keep high-speed traces (clock, ICSPDAT/ICSPCLK) at least 5 mm away from analog ADC inputs to prevent coupling. Route AVDD/AVSS as a Kelvin pair with a ferrite bead to suppress digital switching noise on the analog reference.
Do not exceed 64 MHz across the full -40C to +85C range without proper decoupling - 64 MHz operation requires the HFINTOSC + PLL path with stable VDD. The MCLR pin is bidirectional on this family and must be pulled high through a 10 kohm resistor; floating MCLR prevents normal startup. When using ICSP, isolate the ICSPCLK/ICSPDAT lines from capacitive loads exceeding 30 pF to avoid programming failures. Always issue a BOR (Brown-Out Reset) configuration fuse for battery applications.
Compliance Information
RoHS and lead-free per Microchip product page. Not AEC-Q100 qualified - choose PIC18F45K22-I/PT automotive grade variants if AEC-Q100 is required.
