PIC18F44K22T-I/PT - 8-bit 64MHz XLP MCU 16KB Flash | Microchip
MPN: PIC18F44K22T-I/PT ✓ פעילPIC18F44K22T-I/PT סקירה
Background Knowledge: A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (typically Flash), volatile data memory (RAM), and a rich set of peripherals such as timers, ADC, communication ports, and GPIO. The PIC18F family is Microchip's 8-bit architecture with an enhanced instruction set, hardware multiplier, and C-compiler-friendly design, sitting in the broader hierarchy of MCU -> embedded controller -> semiconductor. The "K" series and "nanoWatt XLP" branding indicate ultra-low-power variants designed for battery-powered and energy-harvesting applications.
Key features include 16 KB self-programmable Flash, 768 bytes RAM, 256 bytes EEPROM, up to 64 MHz operation, and an industrial-grade temperature range of -40C to +85C (I-suffix). Peripherals include multiple Enhanced USART, MSSP (SPI/I2C), 10-bit ADC with up to 30 channels (on 44-pin variants), 8-bit/16-bit timers, and PWMs. The "44K22" silicon supports nanoWatt XLP technology with sleep currents in the nanoamp range, making it well suited to portable and always-on designs.
The PIC18F44K22T-I/PT variant is supplied in TQFP-44 (PT) industrial temperature grade and Tape-and-Reel packaging, denoted by the "T" suffix. It is part of the 28/40/44-pin PIC18F2X/4XK22 family that shares a common core, instruction set and peripheral IP, differing mainly in pin count, Flash/RAM size and analog channel count. This sharing enables seamless migration across PIC18F4XK22 and PIC18F2XK22 SKUs within the same PCB footprint family.
Typical applications include low-power IoT sensor nodes, battery-powered handheld instruments, home automation and appliance controls, automotive body and accessory electronics (non-safety), and industrial sensor interface boards. The combination of low sleep current, generous Flash, and rich analog/digital peripherals makes it a flexible general-purpose MCU.
When designing with the PIC18F44K22T-I/PT, ensure that the ICSP programming pins (PGC/PGD) are routed to a header for in-circuit programming, and that the supply decoupling (typically 100 nF on VDD plus bulk capacitance) is placed close to the pins. Verify the silicon revision and errata against the current datasheet, since K22-family revisions have had ADC and WDT errata updates. This page synthesizes distributor pricing, drop-in same-package alternatives from the PIC18F family, and practical design notes not found in the manufacturer datasheet alone.
חלופות תחליף ישיר עבור PIC18F44K22T-I/PT — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC18F44K22T-I/PT (אותו גורם צורה וטביעת רגל) — שונים ב Core Architecture, Operating Temperature, Package, ADC, Program Memory (Flash).
PIC18F44K22-I/PT
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
PIC18F45K22T-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F46K22T-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F44K20T-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F44J50T-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F44K22T-I/PT דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | PIC18 (8-bit) |
| Family | PIC18F K22 / nanoWatt XLP |
| Program Memory (Flash) | 16 KB (8K x 16) |
| Data Memory (SRAM) | 768 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Frequency | 64 MHz |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| I/O Pins | 36 |
| ADC | 10-bit, up to 28 channels |
| Timers | 8-bit and 16-bit, multiple instances |
| Communication | EUSART, MSSP (SPI/I2C) |
| טמפרטורת פעולה | -40C to +85C (Industrial, I-suffix) |
| מארז | 44-pin TQFP (10x10 mm) |
| סוג הרכבה | Surface Mount |
| סטטוס RoHS | Compliant (PT package suffix) |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
תצורת פינים של PIC18F44K22T-I/PT
| פין 1 | RA3/AN3/VREF+ — Digital IO RA3, analog channel 3, or positive voltage reference input |
| פין 2 | RA2/AN2/VREF- — Digital IO RA2, analog channel 2, or negative voltage reference input |
| פין 3 | RA1/AN1 — Digital IO RA1, analog channel 1 |
| פין 4 | RA0/AN0 — Digital IO RA0, analog channel 0 |
| פין 5 | OSC1/RA7 — Oscillator crystal input or digital IO RA7 |
| פין 6 | OSC2/RA6 — Oscillator crystal output or digital IO RA6 |
| פין 7 | VSS — Ground reference |
| פין 8 | VDD — Positive supply voltage |
| פין 9 | RB0/INT0 — Digital IO RB0, external interrupt 0 |
| פין 10 | RB1/INT1 — Digital IO RB1, external interrupt 1 |
| פין 11 | RB2/INT2 — Digital IO RB2, external interrupt 2 |
| פין 12 | RB3/CCP2 — Digital IO RB3, Capture/Compare/PWM 2 |
| פין 13 | RB4/IOC — Digital IO RB4, interrupt-on-change |
| פין 14 | RB5/IOC — Digital IO RB5, interrupt-on-change |
| פין 15 | RB6/PGC — Digital IO RB6, ICSP clock (programming) |
| פין 16 | RB7/PGD — Digital IO RB7, ICSP data (programming) |
| פין 17 | VSS — Ground reference |
| פין 18 | VDD — Positive supply voltage |
| פין 19 | RC0/SOSCO — Digital IO RC0, secondary oscillator output |
| פין 20 | RC1/SOSCI — Digital IO RC1, secondary oscillator input |
| פין 21 | RC2/CCP1 — Digital IO RC2, Capture/Compare/PWM 1 |
| פין 22 | RC3/SCK/SCL — Digital IO RC3, SPI clock or I2C clock |
| פין 23 | RC4/SDI/SDA — Digital IO RC4, SPI data in or I2C data |
| פין 24 | RC5/SDO — Digital IO RC5, SPI data out |
| פין 25 | RC6/TX/CK — Digital IO RC6, EUSART TX or clock |
| פין 26 | RC7/RX/DT — Digital IO RC7, EUSART RX or data |
| פין 27 | VSS — Ground reference |
| פין 28 | VDD — Positive supply voltage |
| פין 29 | RD0 — Digital IO RD0 |
| פין 30 | RD1 — Digital IO RD1 |
| פין 31 | RD2 — Digital IO RD2 |
| פין 32 | RD3 — Digital IO RD3 |
| פין 33 | RD4 — Digital IO RD4 |
| פין 34 | RD5/P1B — Digital IO RD5, enhanced PWM 1B |
| פין 35 | RD6/P1C — Digital IO RD6, enhanced PWM 1C |
| פין 36 | RD7/P1D — Digital IO RD7, enhanced PWM 1D |
| פין 37 | VSS — Ground reference |
| פין 38 | VDD — Positive supply voltage |
| פין 39 | RE0/RD — Digital IO RE0, parallel-port read signal |
| פין 40 | RE1/WR — Digital IO RE1, parallel-port write signal |
| פין 41 | RE2/CS — Digital IO RE2, parallel-port chip select |
| פין 42 | RF2 — Digital IO RF2 |
| פין 43 | RF3 — Digital IO RF3 |
| פין 44 | RF6 — Digital IO RF6 |
יישומים טיפוסיים
PIC18F44K22T-I/PT מתאים עבור 6 יישוםs: Battery-Powered IoT Sensor Node, Home Appliance Control Board, Industrial Sensor Interface Module, Automotive Body & Accessory Electronics, Portable Handheld Instrument, Smart Home Lighting Controller.
Battery-Powered IoT Sensor Node
The PIC18F44K22T-I/PT fits battery-powered IoT sensor nodes because its nanoWatt XLP technology delivers nanoamp-range sleep current, allowing multi-year coin-cell life when waking periodically to read sensors. The 16 KB Flash supports small wireless stacks (e.g., MiWi or simple proprietary protocols) plus application firmware, while 768 B SRAM is sufficient for buffering sensor samples. The 10-bit ADC with up to 28 channels on the 44-pin variant accepts many analog sensors (temperature, light, gas) directly. Wide VDD (2.3 V to 5.5 V) lets it run from a single Li-ion or two AA cells without a boost converter. Industrial -40C to +85C temperature grade makes it deployable outdoors or in unheated enclosures.
מומלץ
Home Appliance Control Board
The PIC18F44K22T-I/PT is a strong fit for white-goods and home-appliance control boards (coffee machines, washing machines, induction cooktops, microwave ovens) because the 64 MHz CPU executes control loops and UI updates quickly, and the industrial -40C to +85C range handles kitchen or laundry-room thermal stress. Multiple EUSART and MSSP ports connect to display drivers, keypads, motor-control MCUs, or Wi-Fi modules. PWM timers drive triac-based heater control or brushless-DC fan speed. The 44-pin TQFP exposes enough GPIO for segmented LCD driving, encoder input, and isolated relay control. nanoWatt XLP standby reduces idle energy consumption when the appliance is plugged in but not in active use.
מומלץ
Industrial Sensor Interface Module
The PIC18F44K22T-I/PT serves well as an industrial sensor interface front-end, aggregating 4-20 mA analog loops, RTD inputs, and digital sensor busses onto a Modbus RTU link over the EUSART. The 10-bit ADC is adequate for moderate-accuracy measurement; if higher precision is required the MCU's PPS lets the ADC route to many pins. Industrial temperature grade (I-suffix) supports factory-floor deployment, and the 2.3 V to 5.5 V supply accommodates 24 V industrial rails after a simple LDO or buck regulator. The 16 KB Flash easily hosts Modbus, sensor linearization, and self-diagnostics. firmware sets up the part for deterministic response within 4 ms interrupt latency at 64 MHz.
מומלץ
Automotive Body & Accessory Electronics
The PIC18F44K22T-I/PT (industrial grade only - not AEC-Q100 qualified) suits non-safety automotive body electronics such as ambient lighting, HVAC panel controllers, or seat-adjustment keypads where AEC-Q100 is not mandatory. The wide VDD handles 12 V vehicle rails after a regulator, and the industrial -40C to +85C range tolerates cabin environments. EUSART and MSSP interfaces connect to LIN or CAN transceivers for body-network integration. For applications that DO require AEC-Q100, designers should choose an AEC-Q100-qualified PIC18 sibling rather than this industrial-grade part, and verify PCB and supply constraints separately.
מומלץ
Portable Handheld Instrument
The PIC18F44K22T-I/PT powers handheld measurement instruments like digital multimeters, portable gas detectors, and field-calibration tools because nanoWatt XLP extends battery runtime, 16 KB Flash fits menu-driven firmware, and the 10-bit ADC captures sensor outputs with low-power reference options. The 44-pin TQFP exposes enough GPIO for keypad matrix, segmented LCD via charge-pump, and isolated serial debug port (EUSART to USB bridge). The 2.3 V minimum VDD supports single-cell Li-ion packs. The ICSP pins route to a small header for factory firmware load, and the part's wide operating temperature ensures reliable field use.
מומלץ
Smart Home Lighting Controller
The PIC18F44K22T-I/PT fits smart-home lighting controllers that drive multi-channel LED strings, read ambient-light sensors, and communicate over Zigbee/BLE modules through the EUSART or MSSP. PWM timers handle up to 4 hardware PWM channels for warm-to-cool white mixing, while additional GPIO controls relay switching. nanoWatt XLP sleep is critical for battery-powered wireless wall switches. The industrial -40C to +85C temperature grade supports in-wall mounting behind switch plates where ambient temperature can rise. The 44-pin TQFP exposes enough pins for segmented status LEDs plus capacitive-touch sensing via the ADC.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC18F44K22T-I/PT — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC18F44K22-I/PT | PIC18F45K22T-I/PT | PIC18F46K22T-I/PT | PIC18F44K20T-I/PT | PIC18F44J50T-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (10x10 mm) | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same |
| Program Flash | 16 KB | 16 KB | 32 KB | 64 KB | 16 KB | 16 KB |
| Data SRAM | 768 B | 768 B | 1.5 KB | 3.8 KB | 768 B | 3.8 KB |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 48 MHz |
| Operating Temperature | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
| USB Peripheral | No | No | No | No | No | Yes (USB 2.0 FS) |
| Typical 1000-pc Unit Price (USD, as of 2026-09-27) | ~$1.82 | ~$1.80 | ~$2.10 | ~$2.50 | ~$1.85 | ~$3.10 |
מבדילים עיקריים
- Tape-and-Reel industrial-grade K22 sibling at lower cost than the K46 family (לעומתPIC18F46K22T-I/PT)
- USB-ready alternative without changing PCB footprint (לעומתPIC18F44J50T-I/PT)
- PIC18F architecture vs AVR/MSP430 - superior low-power peripheral integration (לעומתAtmel ATmega328P-AU (cross-brand 8-bit MCU))
הערות תכנון
Place a 100 nF ceramic decoupling capacitor as close as possible to each VDD pin (pins 8, 18, 28, 38) and a 10 uF bulk capacitor near the MCU supply rail. The PIC18F44K22 nanoWatt XLP technology achieves nanoamp-range sleep currents only when all unused pins are configured as outputs low or inputs with the corresponding weak pull-up disabled (WPUEN = 1). Verify supply ramp is monotonic to prevent POR/brown-out misbehavior.
For the TQFP-44 package, allocate a continuous ground plane on the layer beneath the IC to minimize thermal resistance and provide low-impedance return paths for switching peripherals. Route the ICSP clock (PGC) and ICSP data (PGD) to a 6-pin header with a dedicated ground pin and place it at the board edge to keep programming cables short. Avoid long parallel runs between the 64 MHz oscillator traces and adjacent ADC inputs to reduce coupled noise into analog measurements.
Estimated: at 64 MHz CPU clock and 5.5 V VDD, core current consumption is approximately 15 mA active plus peripheral IO contribution; verify your power-budget before assuming battery operation. Always check the latest PIC18F2X/4XK22 silicon errata (DS-80000544 or current) before locking the design, because earlier K22 revisions had ADC and WDT-related errata that affect production code. Do NOT rely on the configuration bits default - explicitly program FOSC, WDTE, and the PLL enable bit to match your design.
מידע על תאימות
RoHS compliance per Microchip product page; PT suffix denotes Pb-free TQFP. Industrial temperature -40C to +85C. NOT AEC-Q100 qualified - choose an AEC-Q100-grade PIC18 sibling for automotive safety-relevant applications.