PIC18F44K22T-I/PT - 8-bit 64MHz XLP MCU 16KB Flash | Microchip
MPN: PIC18F44K22T-I/PT ✓ Hoạt độngPIC18F44K22T-I/PT Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC18F44K22T-I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18F44K22T-I/PT (cùng hình factor và footprint) — khác nhau ở Core Architecture, Operating Temperature, Package, ADC, Program Memory (Flash).
PIC18F44K22-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F45K22T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F46K22T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F44K20T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F44J50T-I/PT
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Xem tài liệu →PIC18F44K22T-I/PT Tỷ lệ tối đa & tính chất điện
| 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) |
| Nhiệt độ hoạt động | -40C to +85C (Industrial, I-suffix) |
| Hộp | 44-pin TQFP (10x10 mm) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant (PT package suffix) |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
Cấu hình chân PIC18F44K22T-I/PT
| Chân 1 | RA3/AN3/VREF+ — Digital IO RA3, analog channel 3, or positive voltage reference input |
| Chân 2 | RA2/AN2/VREF- — Digital IO RA2, analog channel 2, or negative voltage reference input |
| Chân 3 | RA1/AN1 — Digital IO RA1, analog channel 1 |
| Chân 4 | RA0/AN0 — Digital IO RA0, analog channel 0 |
| Chân 5 | OSC1/RA7 — Oscillator crystal input or digital IO RA7 |
| Chân 6 | OSC2/RA6 — Oscillator crystal output or digital IO RA6 |
| Chân 7 | VSS — Ground reference |
| Chân 8 | VDD — Positive supply voltage |
| Chân 9 | RB0/INT0 — Digital IO RB0, external interrupt 0 |
| Chân 10 | RB1/INT1 — Digital IO RB1, external interrupt 1 |
| Chân 11 | RB2/INT2 — Digital IO RB2, external interrupt 2 |
| Chân 12 | RB3/CCP2 — Digital IO RB3, Capture/Compare/PWM 2 |
| Chân 13 | RB4/IOC — Digital IO RB4, interrupt-on-change |
| Chân 14 | RB5/IOC — Digital IO RB5, interrupt-on-change |
| Chân 15 | RB6/PGC — Digital IO RB6, ICSP clock (programming) |
| Chân 16 | RB7/PGD — Digital IO RB7, ICSP data (programming) |
| Chân 17 | VSS — Ground reference |
| Chân 18 | VDD — Positive supply voltage |
| Chân 19 | RC0/SOSCO — Digital IO RC0, secondary oscillator output |
| Chân 20 | RC1/SOSCI — Digital IO RC1, secondary oscillator input |
| Chân 21 | RC2/CCP1 — Digital IO RC2, Capture/Compare/PWM 1 |
| Chân 22 | RC3/SCK/SCL — Digital IO RC3, SPI clock or I2C clock |
| Chân 23 | RC4/SDI/SDA — Digital IO RC4, SPI data in or I2C data |
| Chân 24 | RC5/SDO — Digital IO RC5, SPI data out |
| Chân 25 | RC6/TX/CK — Digital IO RC6, EUSART TX or clock |
| Chân 26 | RC7/RX/DT — Digital IO RC7, EUSART RX or data |
| Chân 27 | VSS — Ground reference |
| Chân 28 | VDD — Positive supply voltage |
| Chân 29 | RD0 — Digital IO RD0 |
| Chân 30 | RD1 — Digital IO RD1 |
| Chân 31 | RD2 — Digital IO RD2 |
| Chân 32 | RD3 — Digital IO RD3 |
| Chân 33 | RD4 — Digital IO RD4 |
| Chân 34 | RD5/P1B — Digital IO RD5, enhanced PWM 1B |
| Chân 35 | RD6/P1C — Digital IO RD6, enhanced PWM 1C |
| Chân 36 | RD7/P1D — Digital IO RD7, enhanced PWM 1D |
| Chân 37 | VSS — Ground reference |
| Chân 38 | VDD — Positive supply voltage |
| Chân 39 | RE0/RD — Digital IO RE0, parallel-port read signal |
| Chân 40 | RE1/WR — Digital IO RE1, parallel-port write signal |
| Chân 41 | RE2/CS — Digital IO RE2, parallel-port chip select |
| Chân 42 | RF2 — Digital IO RF2 |
| Chân 43 | RF3 — Digital IO RF3 |
| Chân 44 | RF6 — Digital IO RF6 |
Ứng dụng tiêu biểu
PIC18F44K22T-I/PT phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F44K22T-I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Tape-and-Reel industrial-grade K22 sibling at lower cost than the K46 family (vsPIC18F46K22T-I/PT)
- USB-ready alternative without changing PCB footprint (vsPIC18F44J50T-I/PT)
- PIC18F architecture vs AVR/MSP430 - superior low-power peripheral integration (vsAtmel ATmega328P-AU (cross-brand 8-bit MCU))
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.