PIC18LF44J10T-I/ML - 8-Bit 40MHz MCU, 16KB Flash, 44-QFN | Microchip
MPN: PIC18LF44J10T-I/ML ✓ فعالPIC18LF44J10T-I/ML نمای کلی
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, program memory, and peripherals onto one die. PIC18J-series devices specifically belong to the broader PIC18 microcontroller family (8-bit RISC) within the Microchip MCU product hierarchy: PIC18J -> PIC18 -> 8-bit MCU -> microcontroller -> embedded IC. The PIC18F45J10 family incorporates nanoWatt technology, meaning it is engineered for applications where energy efficiency is critical.
Key features include 16KB FLASH organized as 8K x 16 words, 1KB RAM, full-speed USB 2.0 compliance via the internal transceiver, two Enhanced USART modules, two MSSP (SPI/I2C) ports, a 10-bit ADC with up to 13 input channels, and four 16-bit timers. The nanoWatt power management suite supports ultra-low-power Sleep mode with wake-up via RTCC, allowing designs to extend battery life for years. The part carries an industrial temperature rating of -40C to +85C.
The PIC18LF44J10 architecture uses a modified Harvard bus with separate program and data paths, enabling single-cycle instruction fetch and decode. The wide 16-bit instruction word and 8-bit data path provide deterministic execution for real-time control loops. Internal oscillator options reduce external component count, while the integrated USB 2.0 full-speed transceiver removes the need for an external PHY.
Typical applications include low-power USB peripherals, industrial sensor nodes, portable data loggers, home automation controllers, and battery-powered consumer devices. Designers select the PIC18LF44J10 specifically when they need a balance of low power consumption, USB connectivity, and ample code space within an industry-standard 8-bit architecture.
When designing with the PIC18LF44J10, note that the LF prefix indicates the low-voltage (2.0-3.6V) variant; the non-LF PIC18F44J10 supports 2.0-3.6V as well but is distinguished by a different power-on-reset trip point and nanoWatt tuning. Decoupling capacitors (100nF) on each VDD pin and bulk capacitance on VUSB are required per the manufacturer datasheet to maintain USB signal integrity.
This page synthesizes distributor pricing, drop-in alternatives in the same QFN-44 (ML) package, and practical design notes that go beyond the manufacturer datasheet to accelerate prototyping and sourcing decisions.
جایگزین‌های drop-in برای PIC18LF44J10T-I/ML — 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/ML (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, Timers, Core Architecture, I/O Pins, Data RAM.
PIC18LF44J10-I/ML
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18LF45J10-I/ML
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18LF46J50-I/ML
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18LF46J11-I/ML
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC18LF4458-I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18LF44J10T-I/ML حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Architecture | PIC 8-bit RISC |
| Family | PIC18J (PIC18F45J10 family) |
| Maximum CPU Frequency | 40 MHz |
| Program Memory (FLASH) | 16 KB (8K x 16 words) |
| Data RAM | 1 KB (1024 bytes) |
| Operating Voltage Range | 2.0 V to 3.6 V |
| بسته‌بندی | 44-QFN (8x8 mm), designated ML |
| محدوده دمای کاری | -40 C to +85 C (Industrial, I) |
| ADC | 10-bit, up to 13 channels |
| USB | USB 2.0 Full-Speed, internal transceiver |
| UART | 2x Enhanced USART (EUSART) |
| SPI / I2C | 2x MSSP (SPI / I2C) |
| Timers | 4x 16-bit timers |
| Power-Saving Modes | nanoWatt Idle, Sleep, RTCC run |
| نوع نصب | Surface Mount |
| سطح MSL | 3 |
| وضعیت RoHS | Compliant |
پیکربندی پین PIC18LF44J10T-I/ML
| پین 1 | RB5/KBI1/PGM — PORTB I/O bit 5 / Keyboard interrupt 1 / LVP programming |
| پین 2 | RB4/KBI0 — PORTB I/O bit 4 / Keyboard interrupt 0 |
| پین 3 | RB3/AN9/CCP2 — PORTB I/O bit 3 / Analog input 9 / Capture Compare 2 |
| پین 4 | RB2/AN8/INT2 — PORTB I/O bit 2 / Analog input 8 / External interrupt 2 |
| پین 5 | RB1/AN10/INT1 — PORTB I/O bit 1 / Analog input 10 / External interrupt 1 |
| پین 6 | RB0/AN12/INT0/FLT0 — PORTB I/O bit 0 / Analog input 12 / External interrupt 0 / PWM Fault |
| پین 7 | VDD — Positive supply voltage |
| پین 8 | VSS — Ground reference |
| پین 9 | RC7/RX1/DT1 — PORTC I/O bit 7 / EUSART1 RX / Synchronous data |
| پین 10 | RC6/TX1/CK1 — PORTC I/O bit 6 / EUSART1 TX / Synchronous clock |
| پین 11 | RC5/D+/VP — PORTC I/O bit 5 / USB D+ / Programming voltage |
| پین 12 | RC4/D-/VM — PORTC I/O bit 4 / USB D- / Voltage monitor |
| پین 13 | RC3/SCL1/SCK1 — PORTC I/O bit 3 / I2C1 clock / SPI1 clock |
| پین 14 | RC2/SDA1/SDI1 — PORTC I/O bit 2 / I2C1 data / SPI1 data in |
| پین 15 | RC1/SCL2/CCP2 — PORTC I/O bit 1 / I2C2 clock / Capture Compare 2 |
| پین 16 | RC0/SDA2 — PORTC I/O bit 0 / I2C2 data |
| پین 17 | OSC1/RA7 — Crystal oscillator input / PORTA bit 7 |
| پین 18 | OSC2/RA6 — Crystal oscillator output / PORTA bit 6 |
| پین 19 | RA0/AN0/CVREF — PORTA I/O bit 0 / Analog input 0 / Comparator VREF |
| پین 20 | RA1/AN1 — PORTA I/O bit 1 / Analog input 1 |
| پین 21 | RA2/AN2/VREF- — PORTA I/O bit 2 / Analog input 2 / ADC VREF- |
| پین 22 | RA3/AN3/VREF+ — PORTA I/O bit 3 / Analog input 3 / ADC VREF+ |
| پین 23 | RA4/AN4/T0CKI — PORTA I/O bit 4 / Analog input 4 / Timer0 clock in |
| پین 24 | RA5/AN5/SS1/HLVDIN — PORTA I/O bit 5 / Analog input 5 / SPI1 slave select / HLVD input |
| پین 25 | RE3/RD — PORTE bit 3 / Debug read |
| پین 26 | MCLR/RE2 — Master clear reset / PORTE bit 2 |
| پین 27 | VUSB — USB internal transceiver supply (3.3V) |
| پین 28 | VDD — Positive supply voltage |
| پین 29 | VSS — Ground reference |
| پین 30 | RD7/PSP7/SS2 — PORTD bit 7 / Parallel slave port / SPI2 slave select |
| پین 31 | RD6/PSP6/SCK2 — PORTD bit 6 / Parallel slave port / SPI2 clock |
| پین 32 | RD5/PSP5/SDI2 — PORTD bit 5 / Parallel slave port / SPI2 data in |
| پین 33 | RD4/PSP4/SDO2 — PORTD bit 4 / Parallel slave port / SPI2 data out |
| پین 34 | RD3/PSP3/CCP1 — PORTD bit 3 / Parallel slave port / Capture Compare 1 |
| پین 35 | RD2/PSP2 — PORTD bit 2 / Parallel slave port |
| پین 36 | RD1/PSP1 — PORTD bit 1 / Parallel slave port |
| پین 37 | RD0/PSP0 — PORTD bit 0 / Parallel slave port |
| پین 38 | VSS — Ground reference |
| پین 39 | VDDCORE/VCAP — Internal core regulator output (bypass capacitor required) |
| پین 40 | RE0/AN6 — PORTE bit 0 / Analog input 6 |
| پین 41 | RE1/AN7 — PORTE bit 1 / Analog input 7 |
| پین 42 | RB7/KBI3/PGD — PORTB bit 7 / Keyboard interrupt 3 / ICD data |
| پین 43 | RB6/KBI2/PGC — PORTB bit 6 / Keyboard interrupt 2 / ICD clock |
| پین 44 | PAD — Exposed thermal pad (must be soldered to ground plane) |
کاربردهای معمول
PIC18LF44J10T-I/ML مناسب است برای 6 کاربردs: Low-Power USB Peripherals, Industrial Sensor Nodes, Portable Data Loggers, Home Automation Controllers, Battery-Powered Consumer Devices, Human-Machine Interface (HMI) Panels.
Low-Power USB Peripherals
The PIC18LF44J10T-I/ML is ideally suited for low-power USB peripherals such as HID-class devices (keyboards, mice, game controllers) and CDC-class virtual COM ports. Its integrated USB 2.0 Full-Speed transceiver eliminates the need for an external PHY, and the 2.0-3.6V operating range supports bus-powered and self-powered designs. With 16 KB FLASH and 1 KB RAM, the device has ample code space for USB stacks such as the Microchip USB Framework, while nanoWatt Sleep modes keep idle current in the microamp range for battery-powered dongles.
پیشنهادی
Industrial Sensor Nodes
Industrial sensor nodes benefit from the PIC18LF44J10T-I/ML's industrial -40C to +85C temperature rating and its 10-bit ADC with 13 input channels. The device's two EUSART modules enable simultaneous RS-232 and RS-485 sensor-bus connections, while SPI/I2C MSSP ports interface with digital sensors and EEPROMs. With 40 MHz core performance delivering 10 MIPS throughput, the MCU can sample, filter, and transmit sensor data in real time while nanoWatt Sleep modes extend battery life in remote, maintenance-free installations.
پیشنهادی
Portable Data Loggers
Portable data loggers leverage the PIC18LF44J10T-I/ML's nanoWatt Sleep mode with RTCC wake-up to enable multi-year battery life. The internal RTCC can wake the MCU from Sleep at programmable intervals (typically 1 second to 1 hour) to sample sensors, log data to external SPI flash, and re-enter Sleep. With 1 KB RAM buffering and 16 KB FLASH for logger firmware, the device can run simple packetizing algorithms while consuming only microamps during Sleep. The wide 2.0-3.6V range supports lithium coin-cell or 2x AA battery configurations.
پیشنهادی
Home Automation Controllers
Home automation controllers use the PIC18LF44J10T-I/ML as a central or peripheral MCU for lighting, blinds, HVAC, and security subsystems. Its 2x EUSART modules support wired RS-485 networks (Modbus, BACnet), while SPI and I2C connect to wireless modules (XBee, LoRa, BLE), sensor front-ends, and HMI displays. The USB interface simplifies firmware updates and PC-based commissioning tools. Operating from 2.0-3.6V, the device fits directly into 3.3V-regulated home automation rails without level shifters.
پیشنهادی
Battery-Powered Consumer Devices
Battery-powered consumer devices such as remote controls, wearables, and electronic toys benefit from the PIC18LF44J10T-I/ML's low 2.0V minimum supply voltage, allowing operation from a single discharged lithium coin cell down to its cutoff. The nanoWatt power-saving modes (Idle, Sleep, RTCC run) reduce average current to single-digit microamps, extending battery life by orders of magnitude versus always-on designs. The integrated USB transceiver is a bonus for products requiring firmware updates or charging via USB.
پیشنهادی
Human-Machine Interface (HMI) Panels
HMI panels with LCD/keypad interfaces use the PIC18LF44J10T-I/ML to drive character or graphical LCDs, scan keypads, and manage communication with host controllers. The PIC18J core at 40 MHz can refresh a 128x64 graphical LCD over SPI without taxing CPU bandwidth, while the 1 KB RAM holds display buffers and keypad state. The 10-bit ADC reads analog inputs such as potentiometers or light sensors. The 44-QFN (8x8 mm) package fits in compact HMI modules behind LCD bezels.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC18LF44J10T-I/ML — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC18LF44J10-I/ML | PIC18LF45J10-I/ML | PIC18LF46J50-I/ML | PIC18LF46J11-I/ML | PIC18LF4458-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology (TQFP-44) |
| Package | 44-QFN (8x8 mm, ML) | 44-QFN (8x8 mm, ML) - same | 44-QFN (8x8 mm, ML) - same | 44-QFN (8x8 mm, ML) - same | 44-QFN (8x8 mm, ML) - same | 44-TQFP (PT) - NOT same footprint |
| Core / Architecture | PIC18 8-bit RISC, 40 MHz | PIC18 8-bit, 40 MHz - same | PIC18 8-bit, 40 MHz - same | PIC18 8-bit, 48 MHz - +20% speed | PIC18 8-bit, 48 MHz - +20% speed | PIC18 8-bit, 48 MHz |
| FLASH Program Memory | 16 KB | 16 KB | 32 KB (+100%) | 64 KB (+300%) | 64 KB (+300%) | 24 KB (+50%) |
| Data RAM | 1 KB | 1 KB | 1 KB | 3.8 KB (+280%) | 3.8 KB (+280%) | 2 KB (+100%) |
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V - same | 2.0 V to 3.6 V - same | 2.0 V to 3.6 V - same | 2.0 V to 3.6 V - same | 2.0 V to 3.6 V - same |
| USB 2.0 Full-Speed | Yes (integrated transceiver) | Yes | Yes | Yes | Yes | Yes |
| ADC Channels | 13 x 10-bit | 13 x 10-bit | 13 x 10-bit | 13 x 10-bit | 13 x 10-bit | 13 x 10-bit |
| Unit Price (qty 1, USD) | $4.20 | ~$4.20 (same die) | ~$4.60 | ~$5.50 | ~$5.50 | ~$4.80 |
تفاوت‌های کلیدی
- Identical silicon in different packaging formats (در مقابلPIC18LF44J10-I/ML)
- Doubling FLASH memory in same package for code growth (در مقابلPIC18LF45J10-I/ML)
- Quadrupling FLASH and RAM for advanced USB applications (در مقابلPIC18LF46J50-I/ML)
یادداشت‌های طراحی
Place a 100 nF decoupling capacitor as close as possible to each VDD pin (pins 7, 28) and a single 10 uF bulk capacitor near the VDDCORE/VCAP pin (pin 39). VUSB (pin 27) requires its own 100 nF decoupling capacitor for USB signal integrity. Estimated: total bulk capacitance of at least 10 uF is recommended per the Microchip PIC18F45J10 family datasheet to suppress switching transients during USB enumeration and ADC conversions.
The 44-QFN (8x8 mm) ML package has an exposed thermal pad (pin 44) that MUST be soldered to a ground pour of at least 1 square inch to meet thermal and electrical performance. Without proper soldering of the e-pad, the junction-to-ambient thermal resistance (theta_JA) increases dramatically, potentially causing thermal shutdown under sustained USB traffic or full-load CPU activity.
Do not confuse the PIC18LF44J10 (2.0-3.6V, low-voltage) with the PIC18F44J10 (2.0-3.6V with different POR trip points). The LF variant is intended for battery applications with stricter low-voltage operation. Also, ensure MCLR (pin 26) is pulled high through a 10 kohm resistor; leaving it floating causes intermittent resets. The internal oscillator is factory-calibrated but the PLL mode for 40 MHz requires the HS PLL configuration bits to be set correctly in configuration words.
Route the USB D+ and D- traces (pins 11, 12) as a 90 ohm differential pair with matched length, keeping the pair as short as possible and isolated from high-speed switching signals. Place the VUSB decoupling capacitor within 3 mm of pin 27. The crystal traces (pins 17, 18) should be short and surrounded by a ground guard ring to reduce EMI susceptibility.
اطلاعات انطباق
RoHS and REACH compliance per Microchip product page. Industrial -40C to +85C temperature grade (I suffix) is not AEC-Q100 qualified - choose AEC-Q100 qualified PIC18 variants for automotive applications.
