PIC18LF44J10T-I/PT - 40MHz 8-Bit MCU 16KB Flash 44-TQFP | Microchip
MPN: PIC18LF44J10T-I/PT ✓ פעילPIC18LF44J10T-I/PT סקירה
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.
חלופות תחליף ישיר עבור PIC18LF44J10T-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 PIC18LF44J10T-I/PT (אותו גורם צורה וטביעת רגל) — שונים ב Package, Timers, ADC, I/O Pins, Operating Temperature.
PIC18LF44J10-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18LF44J10T-I/ML
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18LF448T-I/PT
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18LF4320T-I/PT
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18LF4450T-I/PT
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18LF4439T-I/PT
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18LF44J10T-I/PT דירוגים מרביים ומאפיינים חשמליים
| Core | PIC 8-bit RISC |
| Series | PIC18J (PIC18LF44J10) |
| Program Memory | 16 KB (8K x 16) FLASH |
| RAM | 1 KB |
| תדר שעון מקסימלי | 40 MHz |
| Operating Voltage Range | 2.0 V to 5.5 V (2.5V/3.3V/5V nominal) |
| מארז | 44-pin TQFP (10x10 mm) |
| סוג הרכבה | Surface Mount |
| טווח טמפרטורת פעולה | -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 |
| רמת MSL | 3 (168 hours) |
| סטטוס RoHS | Compliant |
| Lead-Free / Halogen-Free | Lead-free (per Microchip) |
תצורת פינים של PIC18LF44J10T-I/PT
| פין 1 | MCLR — Master Clear (reset) input, external pull-up required |
| פין 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| פין 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| פין 4 | RA2/AN2/VREF- — PORTA bit 2 / analog input 2 / ADC VREF- |
| פין 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC VREF+ |
| פין 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| פין 7 | RA5/AN4 — PORTA bit 5 / analog input 4 |
| פין 8 | VSS — Ground reference |
| פין 9 | RA7/OSC1/CLKI — PORTA bit 7 / oscillator input / clock in |
| פין 10 | RA6/OSC2/CLKO — PORTA bit 6 / oscillator output / clock out |
| פין 11 | VDD — Positive supply voltage |
| פין 12 | VSS — Ground reference |
| פין 13 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| פין 14 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| פין 15 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| פין 16 | RB3/INT3 — PORTB bit 3 / external interrupt 3 |
| פין 17 | RB4 — PORTB bit 4 |
| פין 18 | RB5/PGM — PORTB bit 5 / LVP programming |
| פין 19 | RB6/PGC — PORTB bit 6 / ICSP clock |
| פין 20 | RB7/PGD — PORTB bit 7 / ICSP data |
| פין 21 | RC0/T1OSO/T13CKI — PORTC bit 0 / Timer1 oscillator output |
| פין 22 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| פין 23 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| פין 24 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| פין 25 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| פין 26 | RC5/SDO — PORTC bit 5 / SPI data out |
| פין 27 | RC6/TX/CK — PORTC bit 6 / UART TX / clock |
| פין 28 | RC7/RX/DT — PORTC bit 7 / UART RX / data |
| פין 29 | RD0 — PORTD bit 0 |
| פין 30 | RD1 — PORTD bit 1 |
| פין 31 | RD2 — PORTD bit 2 |
| פין 32 | RD3 — PORTD bit 3 |
| פין 33 | RD4 — PORTD bit 4 |
| פין 34 | RD5 — PORTD bit 5 |
| פין 35 | RD6 — PORTD bit 6 |
| פין 36 | RD7 — PORTD bit 7 |
| פין 37 | RE0/RD/AN5 — PORTE bit 0 / read / analog input 5 |
| פין 38 | RE1/WR/AN6 — PORTE bit 1 / write / analog input 6 |
| פין 39 | RE2/CS/AN7 — PORTE bit 2 / chip select / analog input 7 |
| פין 40 | RG0 — PORTG bit 0 |
| פין 41 | RG1 — PORTG bit 1 |
| פין 42 | RG2 — PORTG bit 2 |
| פין 43 | RG3 — PORTG bit 3 |
| פין 44 | NC — Not connected (per datasheet) |
יישומים טיפוסיים
PIC18LF44J10T-I/PT מתאים עבור 6 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC18LF44J10T-I/PT — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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 |
מבדילים עיקריים
- Wide 2.0V to 5.5V supply range with nanoWatt low-power modes (לעומתPIC18F44J10 (F-suffix variant))
- Larger RAM and FLASH than the PIC18LF4320T-I/PT alternative (לעומתPIC18LF4320T-I/PT)
- Stable Microchip supply chain with mature MPLAB XC8 toolchain (לעומתCross-brand 8-bit MCU alternatives)
הערות תכנון
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.
מידע על תאימות
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.