PIC18LF44J10-I/PT - 40MHz 16KB Flash 8-bit MCU | Microchip
MPN: PIC18LF44J10-I/PT ✓ Hoạt độngPIC18LF44J10-I/PT Tóm tắt
An 8-bit microcontroller is a single-chip computer built around an 8-bit data-path CPU, on-chip Flash program memory, RAM, and a fixed set of peripherals such as timers, ADC, serial communication modules and general-purpose I/O. Within the broader taxonomy, PIC microcontrollers fall under the category of microcontroller -> embedded controller -> semiconductor -> integrated circuit. The PIC18 family is Microchip's enhanced 8-bit architecture with a 16-bit instruction word, offering higher code density and richer peripherals than the legacy PIC16 family, while still targeting cost-sensitive, low-power applications.
Key features include 13 channels of 10-bit Analog-to-Digital Conversion (ADC) with auto-acquisition, 5 timer modules (Timer0/1/2/3 plus Timer4), one Enhanced USART (EUSART) with LIN support, two Master Synchronous Serial Port (MSSP) modules supporting SPI and I2C (with address masking), 2 comparators, 4 channels of PWM (10-bit ECCP plus 2 CCP), and a 256-byte data EEPROM. The device also integrates an 8 x 8 hardware multiplier, two analog comparators with programmable reference, and nanoWatt Technology dynamic power-down modes that drop Iq into the sub-microamp region during sleep.
Architecturally the PIC18LF44J10 uses a Harvard-style bus with separate program Flash and data SRAM paths, 31-level hardware stack, and a 16-bit instruction word capable of executing one instruction per clock cycle (4-clock pipeline). The LF prefix designates the wide-voltage variant that supports operation down to 2.0 V, providing flexibility for systems powered from 2-cell battery packs or regulated 3.3 V rails. The J10 family specifically targets USB- and connectivity-rich applications with its dual MSSP and EUSART combination.
Typical applications include industrial control panels, low-power sensor nodes, USB peripherals (with external transceiver), home automation controllers, automotive body electronics, white-goods user interfaces, and small HMI displays. The 13-channel 10-bit ADC is well matched to multi-sensor acquisition, while the dual I2C/SPI ports simplify connection to sensors and EEPROMs.
When designing with the PIC18LF44J10-I/PT, place the ICSP decoupling network (typically 100 nF plus 10 uF bulk) as close as possible to the VDD/VSS pair nearest the die and respect the 2.0 V minimum supply during programming and ADC reference operation. MPLAB X IDE with XC8 compiler is the standard firmware toolchain.
This page synthesizes distributor pricing, drop-in Microchip alternatives (PIC18F44J10-I/PT, PIC18LF44J10-I/P, PIC18LF44J10T-I/PT), package information and practical design notes not found on the manufacturer product page alone.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF44J10-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 PIC18LF44J10-I/PT (cùng hình factor và footprint) — khác nhau ở Package, Timers, I/O Pins, Operating Temperature, Communication.
PIC18F44J10-I/PT
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| Core Architecture | PIC18 (8-bit RISC, 16-bit instruction word) |
| CPU Core | PIC18J family, Harvard bus |
| Maximum CPU Frequency | 48 MHz internal; 40 MHz at full VDD |
| Performance | 12 MIPS at 48 MHz (4-clock pipeline) |
| Program Memory (Flash) | 16 KB (8K x 16) |
| Data SRAM | 1024 bytes |
| Data EEPROM | 256 bytes |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| I/O Pins | 32 (digital bidirectional) |
| ADC | 13 channels, 10-bit resolution |
| Timers | 5 (Timer0/1/2/3, Timer4) |
| PWM Channels | 4 (10-bit ECCP + 2 CCP) |
| Comparators | 2 analog comparators |
| Communication | 1x EUSART (LIN-capable), 2x MSSP (I2C/SPI) |
| Nhiệt độ hoạt động | -40C to +85C (industrial, I suffix) |
| Hardware Multiplier | 8 x 8 single-cycle |
| Stack | 31-level hardware stack |
| Hộp | 44-pin TQFP (PT), 10x10 mm |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (JEDEC J-STD-020) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18LF44J10-I/PT
| Chân 1 | MCLR — Master Clear (reset) input, active low |
| Chân 2 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| Chân 3 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| Chân 4 | RA2/AN2/VREF- — Digital I/O / Analog input 2 / ADC VREF- |
| Chân 5 | RA3/AN3/VREF+ — Digital I/O / Analog input 3 / ADC VREF+ |
| Chân 6 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| Chân 7 | RA5/AN4 — Digital I/O / Analog input channel 4 |
| Chân 8 | RE0/RD — Digital I/O (port E bit 0) |
| Chân 9 | RE1/WR — Digital I/O (port E bit 1) |
| Chân 10 | RE2/CS — Digital I/O (port E bit 2) |
| Chân 11 | VDD — Positive supply voltage |
| Chân 12 | VSS — Ground reference |
| Chân 13 | OSC1/CLKI/RA7 — Crystal input / external clock / GPIO |
| Chân 14 | OSC2/CLKO/RA6 — Crystal output / clock output / GPIO |
| Chân 15 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator |
| Chân 16 | RC1/T1OSI — Digital I/O / Timer1 oscillator input |
| Chân 17 | RC2/CCP1 — Digital I/O / Capture-Compare-PWM 1 |
| Chân 18 | RC3/SCL1 — Digital I/O / MSSP1 I2C clock |
| Chân 19 | RC4/SDA1 — Digital I/O / MSSP1 I2C data |
| Chân 20 | RC5/SDO1 — Digital I/O / MSSP1 SPI data out |
| Chân 21 | RC6/TX1/CK1 — Digital I/O / EUSART transmit / clock |
| Chân 22 | RC7/RX1/DT1 — Digital I/O / EUSART receive / data |
| Chân 23 | RD0/PSP0 — Digital I/O / Parallel Slave Port bit 0 |
| Chân 24 | RD1/PSP1 — Digital I/O / Parallel Slave Port bit 1 |
| Chân 25 | RD2/PSP2 — Digital I/O / Parallel Slave Port bit 2 |
| Chân 26 | RD3/PSP3 — Digital I/O / Parallel Slave Port bit 3 |
| Chân 27 | RD4/PSP4 — Digital I/O / Parallel Slave Port bit 4 |
| Chân 28 | RD5/PSP5 — Digital I/O / Parallel Slave Port bit 5 |
| Chân 29 | RD6/PSP6 — Digital I/O / Parallel Slave Port bit 6 |
| Chân 30 | RD7/PSP7 — Digital I/O / Parallel Slave Port bit 7 |
| Chân 31 | VSS — Ground reference |
| Chân 32 | VDD — Positive supply voltage |
| Chân 33 | RB0/INT0 — Digital I/O / External interrupt 0 |
| Chân 34 | RB1/INT1 — Digital I/O / External interrupt 1 |
| Chân 35 | RB2/INT2 — Digital I/O / External interrupt 2 |
| Chân 36 | RB3/INT3 — Digital I/O / External interrupt 3 |
| Chân 37 | RB4/KBI0 — Digital I/O / Keyboard interrupt 0 |
| Chân 38 | RB5/KBI1 — Digital I/O / Keyboard interrupt 1 |
| Chân 39 | RB6/PGC — Digital I/O / ICSP clock |
| Chân 40 | RB7/PGD — Digital I/O / ICSP data |
| Chân 41 | PGM — Low-voltage programming enable |
| Chân 42 | AN5/RB5 — Analog input channel 5 (alt mapping) |
| Chân 43 | AN6/RB6 — Analog input channel 6 (alt mapping) |
| Chân 44 | AN7/RB7 — Analog input channel 7 (alt mapping) |
Ứng dụng tiêu biểu
PIC18LF44J10-I/PT phù hợp cho 6 Áp dụngs: Industrial Control Panels, Low-Power IoT Sensor Nodes, USB Human Interface Devices (HID), Home Automation Controllers, White Goods User Interfaces, Automotive Body Electronics.
Industrial Control Panels
The PIC18LF44J10-I/PT fits industrial control panel applications because its 32 digital I/O lines drive relay banks, status LEDs and keypad matrices, while the 13-channel 10-bit ADC reads analog sensors (4-20 mA loops, temperature, pressure). The wide 2.0-5.5 V supply tolerates unregulated 24 V-derived rails after a simple LDO, and the dual MSSP modules connect to industrial I2C sensors and SPI displays simultaneously. nanoWatt sleep modes reduce panel standby power below 100 uA when the panel is idle. Industrial temperature grade (-40C to +85C) ensures operation in unheated cabinets.
Được đề xuất
Low-Power IoT Sensor Nodes
For battery-powered IoT sensor nodes, the PIC18LF44J10-I/PT's nanoWatt Technology yields sub-microamp sleep currents that extend 2x AA battery life to multiple years on duty-cycled acquisitions. The 2.0-5.5 V supply directly accepts 2-cell alkaline/NiMH packs without boost regulation, while the 13-channel 10-bit ADC multiplexes temperature, humidity, light and motion sensors through one IC. The EUSART with LIN bus support and one of the MSSP modules (I2C) connect to wireless transceivers such as RN2483 LoRa or to sub-GHz modules via SPI.
Được đề xuất
USB Human Interface Devices (HID)
Although the PIC18LF44J10-I/PT lacks native USB, it implements USB HID class firmware in software using the MSSP modules and bit-banged endpoints, historically documented in Microchip application notes for low-cost HID peripherals. The 16 KB Flash comfortably stores HID class descriptors plus user application code, while the 32 I/O lines connect to buttons, encoders and LED indicators. The wide 2.0-5.5 V supply draws cleanly from USB VBUS through a 3.3 V LDO, simplifying PCB integration.
Được đề xuất
Home Automation Controllers
Home automation gateways benefit from the PIC18LF44J10-I/PT's dual MSSP modules: one I2C bus manages sensor and EEPROM expansion, while the second runs SPI to RF transceivers or LCD displays. The 13-channel ADC reads lighting, temperature and PIR sensors, and the 4 PWM channels dim LED strips or control fan speeds. EUSART supports RS-485 or LIN connectivity to HVAC subsystems. The 32 I/O lines switch relays controlling lights, blinds and outlets, eliminating external I/O expanders in compact installations.
Được đề xuất
White Goods User Interfaces
Washing machines, dishwashers and ovens rely on the PIC18LF44J10-I/PT's wide 2.0-5.5 V supply (compatible with rectified mains-derived rails), 13-channel ADC for temperature and water level sensing, and PWM channels for motor speed or heater control. The 32 I/O lines drive segment displays, button matrices and buzzer feedback. Industrial -40C to +85C temperature rating survives appliance interior heat, and nanoWatt sleep modes keep standby power compliant with energy regulations.
Được đề xuất
Automotive Body Electronics
Although not AEC-Q100 qualified, the PIC18LF44J10-I/PT's wide supply range and industrial temperature grade make it useful for non-safety automotive body modules such as interior lighting, door locks and seat controllers in accessory markets. The EUSART with LIN 1.3/2.0/2.1 support connects to LIN body networks, while the MSSP modules drive SPI peripherals. nanoWatt Technology keeps quiescent current low during vehicle sleep, preserving battery life during long parking periods.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF44J10-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 | PIC18F44J10-I/PT | PIC18LF44J10-I/P | PIC18LF44J10T-I/PT |
|---|---|---|---|---|
| Package | 44-pin TQFP (10x10 mm) | 44-pin TQFP - same | 44-pin PDIP - different footprint | 44-pin TQFP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Supply Voltage | 2.0 V to 5.5 V | 2.0 V to 3.6 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB |
| SRAM | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes |
| Max CPU Frequency | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) |
| I/O Pins | 32 | 32 | 32 | 32 |
| ADC Channels | 13 x 10-bit | 13 x 10-bit | 13 x 10-bit | 13 x 10-bit |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Unit Price (qty 1, USD) | 5.16 | 4.90 | 4.95 | 5.20 |
Bảo phân biệt quan trọng
- Wide 2.0 V to 5.5 V supply range (vsPIC18F44J10-I/PT)
- Dual MSSP for I2C/SPI concurrent buses (vsPIC18F44J10-I/PT)
- Tape-and-reel kitting option (vsPIC18LF44J10-I/P)
Ghi chú thiết kế
Place a 100 nF decoupling capacitor as close as possible to each VDD/VSS pin pair (pins 11/12 and 31/32 on the TQFP), plus a bulk 10 uF tantalum or ceramic capacitor on the main supply rail. The PIC18LF44J10-I/PT draws up to 10 mA at 48 MHz with all peripherals active; this bulk capacitor prevents VDD droop during peak CPU bursts and improves ADC reference stability. Avoid sharing analog and digital supply traces - use a star-ground layout.
Do not exceed 5.5 V on any pin, including the MCLR pin during ICSP programming. The MCLR pin typically requires a 10 kohm pull-up to VDD plus a 100 nF capacitor for noise immunity; omitting the capacitor can cause spurious resets during EEPROM write cycles. Always configure unused I/O pins as outputs (not inputs) to eliminate parasitic current draw, and disable the ADC if unused to save 1-2 mA.
Route the crystal oscillator traces (OSC1/OSC2) as short and symmetric as possible with a ground guard ring, keeping them away from switching signals. The ICSP pins (RB6/PGC, RB7/PGD) should be accessible in production for field updates; consider a 2x5 header rather than relying on pogo pins alone. Place the analog AVSS/AVDD pair (if used) close to the ADC reference pins to minimize ground-loop noise.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; not recommended for safety-critical automotive applications. Lead-free and halogen-free per Microchip environmental compliance disclosures.