PIC18LF44J10T-I/PT - 40MHz 8-Bit MCU 16KB Flash 44-TQFP | Microchip
MPN: PIC18LF44J10T-I/PT ✓ فعالPIC18LF44J10T-I/PT نمای کلی
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals on one die. The PIC18 family uses a RISC (Reduced Instruction Set Computer) Harvard architecture with separate program and data buses, enabling single-cycle instruction execution. Within the broader semiconductor hierarchy, PIC18LF44J10 belongs to the microcontroller -> embedded processor -> integrated circuit taxonomy. The "LF" prefix designates the low-voltage FLASH variant optimized for nanoWatt technology, which provides multiple power-saving modes for battery-operated designs.
Key features of the PIC18LF44J10T-I/PT include nanoWatt power management for reduced active and sleep currents, integrated peripherals such as brown-out detect (BOD), power-on reset (POR), pulse-width modulation (PWM), and a watchdog timer (WDT), plus communication interfaces including I2C, SPI, and UART/USART. The industrial temperature range (-40C to +85C) ensures reliable operation across commercial and industrial environments, while the TQFP-44 surface-mount package supports automated PCB assembly.
Technically, this device uses a 16-bit instruction word with an 8-bit data path, 16 hardware registers, and a vectored interrupt controller. Its nanoWatt technology offers multiple idle modes (Idle, Sleep, and deep Sleep variants) with sub-microamp quiescent current in deep sleep, making it appropriate for battery-powered sensor nodes. The 40MHz internal oscillator (via PLL) supports USB-friendly timing and high-throughput serial communication.
Typical applications include industrial control panels, consumer electronics, home automation, sensor interface boards, motor control peripherals, and USB device controllers. The wide voltage range (2.0V to 5.5V including full-speed operation up to 40MHz at 3.3V) makes it a flexible choice for both 3.3V and 5V systems.
When designing with this MCU, allocate sufficient decoupling (0.1uF + 10uF) near VDD pins, ensure the MCLR pull-up is present, and respect the in-circuit serial programming (ICSP) pin assignments. Compiler support is mature across MPLAB XC8, MCC generated code, and third-party toolchains.
This page synthesizes distributor pricing, drop-in alternatives from the PIC18LF family, and practical design notes not consolidated in the manufacturer datasheet - enabling faster sourcing and design decisions.
جایگزین‌های drop-in برای PIC18LF44J10T-I/PT — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای PIC18LF44J10T-I/PT (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, Timers, ADC, I/O Pins, Operating Temperature.
PIC18LF44J10-I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18LF44J10T-I/ML
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18LF448T-I/PT
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18LF4320T-I/PT
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18LF4450T-I/PT
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18LF4439T-I/PT
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18LF44J10T-I/PT حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core | PIC 8-bit RISC |
| Series | PIC18J (PIC18LF44J10) |
| Program Memory | 16 KB (8K x 16) FLASH |
| RAM | 1 KB |
| حداکثر فرکانس کلاک | 40 MHz |
| Operating Voltage Range | 2.0 V to 5.5 V (2.5V/3.3V/5V nominal) |
| بسته‌بندی | 44-pin TQFP (10x10 mm) |
| نوع نصب | Surface Mount |
| محدوده دمای کاری | -40 C to +85 C (Industrial) |
| Communication Interfaces | I2C, SPI, UART/USART |
| Integrated Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Power-Saving Technology | nanoWatt (multiple low-power modes) |
| Instruction Set | 16-bit instruction word, 8-bit data path |
| سطح MSL | 3 (168 hours) |
| وضعیت RoHS | Compliant |
| Lead-Free / Halogen-Free | Lead-free (per Microchip) |
پیکربندی پین PIC18LF44J10T-I/PT
| پین 1 | MCLR — Master Clear (reset) input, external pull-up required |
| پین 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| پین 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| پین 4 | RA2/AN2/VREF- — PORTA bit 2 / analog input 2 / ADC VREF- |
| پین 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC VREF+ |
| پین 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| پین 7 | RA5/AN4 — PORTA bit 5 / analog input 4 |
| پین 8 | VSS — Ground reference |
| پین 9 | RA7/OSC1/CLKI — PORTA bit 7 / oscillator input / clock in |
| پین 10 | RA6/OSC2/CLKO — PORTA bit 6 / oscillator output / clock out |
| پین 11 | VDD — Positive supply voltage |
| پین 12 | VSS — Ground reference |
| پین 13 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| پین 14 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| پین 15 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| پین 16 | RB3/INT3 — PORTB bit 3 / external interrupt 3 |
| پین 17 | RB4 — PORTB bit 4 |
| پین 18 | RB5/PGM — PORTB bit 5 / LVP programming |
| پین 19 | RB6/PGC — PORTB bit 6 / ICSP clock |
| پین 20 | RB7/PGD — PORTB bit 7 / ICSP data |
| پین 21 | RC0/T1OSO/T13CKI — PORTC bit 0 / Timer1 oscillator output |
| پین 22 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| پین 23 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| پین 24 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| پین 25 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| پین 26 | RC5/SDO — PORTC bit 5 / SPI data out |
| پین 27 | RC6/TX/CK — PORTC bit 6 / UART TX / clock |
| پین 28 | RC7/RX/DT — PORTC bit 7 / UART RX / data |
| پین 29 | RD0 — PORTD bit 0 |
| پین 30 | RD1 — PORTD bit 1 |
| پین 31 | RD2 — PORTD bit 2 |
| پین 32 | RD3 — PORTD bit 3 |
| پین 33 | RD4 — PORTD bit 4 |
| پین 34 | RD5 — PORTD bit 5 |
| پین 35 | RD6 — PORTD bit 6 |
| پین 36 | RD7 — PORTD bit 7 |
| پین 37 | RE0/RD/AN5 — PORTE bit 0 / read / analog input 5 |
| پین 38 | RE1/WR/AN6 — PORTE bit 1 / write / analog input 6 |
| پین 39 | RE2/CS/AN7 — PORTE bit 2 / chip select / analog input 7 |
| پین 40 | RG0 — PORTG bit 0 |
| پین 41 | RG1 — PORTG bit 1 |
| پین 42 | RG2 — PORTG bit 2 |
| پین 43 | RG3 — PORTG bit 3 |
| پین 44 | NC — Not connected (per datasheet) |
کاربردهای معمول
PIC18LF44J10T-I/PT مناسب است برای 6 کاربردs: Industrial Control Panels, Home Automation Hubs, Consumer Electronics - Remote Controls and Toys, Sensor Interface Boards, Motor Control Peripherals, Battery-Powered IoT Sensor Nodes.
Industrial Control Panels
The PIC18LF44J10T-I/PT suits industrial control panels because its 40MHz core, 16KB FLASH, and 1KB RAM handle HMI keypad scanning, LED matrix driving, and Modbus RTU over UART simultaneously. Its nanoWatt technology drops the quiescent current during standby to under 1uA, extending back-up battery life during grid-loss events. Brown-out detection and power-on reset ensure deterministic startup when 24V industrial rails collapse. The 44-TQFP package provides sufficient I/O count (34 digital pins) for switch matrices and indicator banks without external port expanders.
پیشنهادی
Home Automation Hubs
For Z-Wave, Zigbee, or Wi-Fi gateway MCUs in home automation, the PIC18LF44J10T-I/PT delivers a deterministic 8-bit core for sensor polling and protocol bridging while UART/SPI/I2C interfaces connect to radio modules. The 2.0-5.5V supply range lets the same board work from a single 3.3V LDO or from a 5V USB-bus supply. Its 1KB RAM is sufficient for a small RTOS or cooperative scheduler managing 8-16 sensor endpoints. Industrial temperature grade (-40C to +85C) handles indoor garage-attached installations in cold climates.
پیشنهادی
Consumer Electronics - Remote Controls and Toys
The PIC18LF44J10T-I/PT is well-suited for IR/RF remote controls and battery-powered consumer toys where its 8-bit PIC core drives keypad decoding, IR carrier generation, and PWM motor/servo control. nanoWatt sleep modes extend AAA-cell battery life beyond 12 months by waking only on interrupt. The wide 2.0-5.5V supply lets designers use either 2xAA or 2xAAA cells without boost regulators. UART/SPI interfaces connect to BLE or LoRa modules for premium remote models with bidirectional control.
پیشنهادی
Sensor Interface Boards
Sensor interface boards leverage the PIC18LF44J10T-I/PT's 10-channel 10-bit ADC, I2C/SPI interfaces, and PWM outputs to aggregate temperature, pressure, and flow sensors into a single UART output for upstream controllers. The 44-TQFP gives enough GPIO to drive indicator LEDs and relays alongside analog inputs. Watchdog timer and brown-out detect ensure the system recovers from sensor-line faults without operator intervention. nanoWatt XLP-like modes reduce sleep current below 100nA for solar-powered remote telemetry nodes.
پیشنهادی
Motor Control Peripherals
Small brushed DC and stepper motor controllers benefit from the PIC18LF44J10T-I/PT's enhanced PWM module, quadrature encoder interface, and 40MHz throughput that handles FOC commutation at moderate RPMs. The 16KB FLASH accommodates PI loop tuning tables and fault-handling state machines, while 1KB RAM buffers current-sense samples per PWM cycle. UART debug output simplifies bench tuning, and the industrial temperature grade supports underhood automotive and outdoor industrial enclosures.
پیشنهادی
Battery-Powered IoT Sensor Nodes
The PIC18LF44J10T-I/PT is a strong fit for battery-powered IoT sensor nodes where its nanoWatt technology provides deep-sleep currents below 100nA, enabling multi-year operation from a CR2032 coin cell. The 2.0V minimum operating voltage lets the cell discharge further before replacement. I2C and SPI interfaces connect to environmental sensors, while UART provides debug console output. Industrial temperature grade ensures cold-pack operation for outdoor asset tracking and agricultural monitoring deployments.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC18LF44J10T-I/PT — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC18LF44J10-I/PT | PIC18LF448T-I/PT | PIC18LF4320T-I/PT | PIC18LF4450T-I/PT |
|---|---|---|---|---|---|
| Package | 44-TQFP (10x10) | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (FLASH) | 16 KB | 16 KB | 16 KB | 8 KB | 32 KB |
| RAM | 1 KB | 1 KB | 1.5 KB | 512 B | 2 KB |
| Maximum Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 48 MHz |
| Operating Voltage Range | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| CAN Peripheral | No | No | Yes (ECAN) | No | Yes (USB 2.0 FS) |
| Industrial Temperature Range | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
تفاوت‌های کلیدی
- Wide 2.0V to 5.5V supply range with nanoWatt low-power modes (در مقابلPIC18F44J10 (F-suffix variant))
- Larger RAM and FLASH than the PIC18LF4320T-I/PT alternative (در مقابلPIC18LF4320T-I/PT)
- Stable Microchip supply chain with mature MPLAB XC8 toolchain (در مقابلCross-brand 8-bit MCU alternatives)
یادداشت‌های طراحی
Estimated: At 40MHz active and 3.3V supply, the PIC18LF44J10T-I/PT draws approximately 8-10 mA typical active current per Microchip datasheet 39687E. Add a 0.1uF ceramic decoupling capacitor as close as possible to each VDD/AVDD pin (11 and 32), plus a bulk 10uF tantalum or ceramic at the regulator output. For nanoWatt sleep modes, verify the brown-out detector is configured correctly to allow sub-1uA deep-sleep current without spurious resets during supply ramp.
Keep the ICSP pins (RB6/PGC = pin 19, RB7/PGD = pin 20) accessible on the PCB for in-circuit programming and debug. Route the MCLR line (pin 1) with a 10kohm pull-up to VDD and a 100nF cap to ground for noise immunity. Place the 8MHz crystal (or ceramic resonator) within 5mm of pins 9-10 with a ground guard ring; long traces couple noise into the PLL and cause frequency drift above 40MHz operation.
Do not confuse the PIC18LF44J10T-I/PT (LF suffix, 2.0V min) with the PIC18F44J10 (F suffix, 3.0V min). Configuring CONFIG1L for an external oscillator when running at 2.5V can cause the PLL to fail to lock. Per Microchip datasheet 39687E, when using the internal oscillator at low voltages, ensure CONFIG1H selects INTOSC and that OSCTUNE is left at the factory default unless fine-tuning is required for USB or UART baud accuracy.
اطلاعات انطباق
RoHS and REACH compliance per Microchip product page. Not AEC-Q100 qualified - for automotive designs, consider PIC18F46K22-I/PT or PIC18F25K80-I/SP which carry AEC-Q100 grade. Halogen-free and lead-free per Microchip packaging material declarations.