PIC18LF4439-I/P - 8-Bit 40MHz MCU 12KB Flash 40-PDIP | Microchip
MPN: PIC18LF4439-I/P ✓ فعالPIC18LF4439-I/P جائزہ
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripherals on a single die. The PIC18F family uses a Harvard-architecture RISC core with a 16-bit instruction word and 8-bit data path, sitting in the broader semiconductor hierarchy of microcontroller -> embedded processor -> semiconductor device. The 'LF' prefix designates low-voltage operation (typically 2.0V-3.6V), enabling battery-powered and portable designs where standard 5V PIC18F parts would be unsuitable.
Key features include a 10-bit ADC with up to 8 channels, multiple PWM outputs suitable for motor control, a USART, MSSP (SPI/I2C), capture/compare/PWM modules, and dual analog comparators. The PIC18LF4439 also includes special motor-control peripherals, notably the Power Control PWM module and quadrature encoder interface, distinguishing it within the PIC18F lineup for motion-control applications.
The architecture uses a Harvard-memory RISC core with hardware multiplier and 32-level stack, achieving up to 10 MIPS throughput at 40 MHz. The integrated motor-control PWM block delivers up to 14-bit resolution with center-aligned or edge-aligned modes, supporting complementary outputs with programmable dead-time insertion - a feature targeted at three-phase inverter designs. The 10-bit ADC with dual Sample-and-Hold enables simultaneous voltage and current sensing in FOC (field-oriented control) loops.
Typical applications include BLDC motor control (single/three-phase), industrial drives, HVAC fan/blower controllers, home automation, low-power sensor platforms, and battery-powered instrumentation where the wide 2.0V-3.6V operating range is critical.
When designing with this device, ensure proper decoupling (100 nF + 10 uF near VDD/AVDD pins) and that the MCLR pin is tied through a pull-up resistor with the standard ICSP layout for in-circuit serial programming retention.
This page synthesizes distributor pricing, drop-in alternatives, parametric comparisons, and practical design notes for the PIC18LF4439-I/P that are not collated in the manufacturer datasheet alone.
کے لیے ڈراپ اِن متبادل PIC18LF4439-I/P — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC18LF4439-I/P (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Core Architecture, Mounting Type, ADC, Operating Temperature, I/O Pins.
PIC18LF4439-I/ML
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18F4439-I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18LF4331-I/P
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC18LF4439-E/P
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC18LF4439-I/P زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Manufacturer | Microchip Technology |
| Series | PIC 18F |
| Core Architecture | 8-bit RISC Harvard |
| Core Processor | PIC |
| Core Speed | 40 MHz |
| Program Memory Type | FLASH |
| Program Memory Size | 12 KB (6 K x 16) |
| RAM Size | 640 bytes |
| Number of I/O Pins | 32 |
| Number of Terminals | 40 |
| Package Type | 40-PDIP (DIP-40) |
| Package Code | PDIP |
| Terminal Form | Through-Hole |
| Temperature Grade | Industrial |
| آپریٹنگ درجہ حرارت | -40C to +85C |
| Supply Voltage Range (LF) | 2.0 V to 3.6 V |
| ماؤنٹنگ ٹائپ | Through-Hole |
| RoHS اسٹیٹس | Compliant |
PIC18LF4439-I/P پن کنفیگریشن
| پن 1 | MCLR — Master Clear (Reset) input, active low |
| پن 2 | RA0/AN0 — Digital I/O / Analog input 0 |
| پن 3 | RA1/AN1 — Digital I/O / Analog input 1 |
| پن 4 | RA2/AN2 — Digital I/O / Analog input 2 |
| پن 5 | RA3/AN3 — Digital I/O / Analog input 3 |
| پن 6 | RA4/AN4 — Digital I/O / Analog input 4 |
| پن 7 | RA5/AN5 — Digital I/O / Analog input 5 |
| پن 8 | RE0/RD — Digital I/O / Parallel Slave Port |
| پن 9 | RE1/WR — Digital I/O / Parallel Slave Port |
| پن 10 | RE2/CS — Digital I/O / Parallel Slave Port |
| پن 11 | VDD — Positive supply voltage (2.0V-3.6V) |
| پن 12 | VSS — Ground reference |
| پن 13 | OSC1/CLKI — Crystal input / External clock in |
| پن 14 | OSC2/CLKO — Crystal output / Clock out |
| پن 15 | RC0 — Digital I/O / PWM output |
| پن 16 | RC1 — Digital I/O / PWM output |
| پن 17 | RC2 — Digital I/O / PWM output |
| پن 18 | RC3 — Digital I/O / PWM output |
| پن 19 | RD0/PSP0 — Digital I/O / Parallel Slave Port |
| پن 20 | RD1/PSP1 — Digital I/O / Parallel Slave Port |
| پن 21 | RD2/PSP2 — Digital I/O / Parallel Slave Port |
| پن 22 | RD3/PSP3 — Digital I/O / Parallel Slave Port |
| پن 23 | RC4 — Digital I/O / PWM output |
| پن 24 | RC5 — Digital I/O / PWM output |
| پن 25 | RC6 — Digital I/O / PWM output |
| پن 26 | RC7 — Digital I/O / PWM output |
| پن 27 | RD4/PSP4 — Digital I/O / Parallel Slave Port |
| پن 28 | RD5/PSP5 — Digital I/O / Parallel Slave Port |
| پن 29 | RD6/PSP6 — Digital I/O / Parallel Slave Port |
| پن 30 | RD7/PSP7 — Digital I/O / Parallel Slave Port |
| پن 31 | VSS — Ground reference |
| پن 32 | VDD — Positive supply voltage (2.0V-3.6V) |
| پن 33 | RB0/INT0 — Digital I/O / External Interrupt 0 |
| پن 34 | RB1/INT1 — Digital I/O / External Interrupt 1 |
| پن 35 | RB2/INT2 — Digital I/O / External Interrupt 2 |
| پن 36 | RB3/INT3 — Digital I/O / External Interrupt 3 |
| پن 37 | RB4 — Digital I/O |
| پن 38 | RB5 — Digital I/O |
| پن 39 | RB6/PGC — Digital I/O / ICSP Clock |
| پن 40 | RB7/PGD — Digital I/O / ICSP Data |
عام استعمالات
PIC18LF4439-I/P کے لیے موزوں ہے 7 ایپلیکیشنs: BLDC Motor Control, Industrial HVAC Fan Control, Battery-Powered Sensor Hub, Home Automation Controllers, Pump and Valve Actuators, Educational and Hobby Electronics, Automotive Aftermarket Accessories.
BLDC Motor Control
The PIC18LF4439-I/P is engineered for BLDC motor control. Its integrated Power Control PWM module with up to 14-bit resolution, complementary outputs, programmable dead-time, and fault input eliminates external motor-control ASICs. The 10-bit ADC with dual sample-and-hold enables simultaneous phase current sensing in FOC loops, while the quadrature encoder interface supports sensored position feedback. Operating from 2.0V-3.6V, it fits battery-powered E-bike and cordless tool designs where standard 5V PIC18F parts cannot run.
تجویز کردہ
Industrial HVAC Fan Control
HVAC variable-speed fan controllers benefit from the PIC18LF4439-I/P's integrated PWM and encoder peripherals plus industrial -40C to +85C temperature rating. The 32 I/O pins interface with status LEDs, keypad inputs, and UART/I2C sensors (temperature, humidity, pressure). Wide 2.0V-3.6V operation supports 3.3V system rails, simplifying power tree design in 24V industrial systems with intermediate 3.3V conversion.
تجویز کردہ
Battery-Powered Sensor Hub
Low-power portable sensor hubs benefit from the PIC18LF4439-I/P's 2.0V-3.6V operating range and integrated peripherals (ADC, USART, MSSP). Sleep currents can be reduced to the low-microamp range using the LP and Sleep modes described in Microchip datasheet DS39630F. The 12 KB FLASH fits small protocol stacks (Modbus RTU, simple sensor fusion), and the 640-byte RAM accommodates data buffering. Industrial temperature grade supports outdoor deployments.
تجویز کردہ
Home Automation Controllers
Smart-home control panels benefit from the PIC18LF4439-I/P's I2C, SPI, and UART peripherals for connecting to displays, sensors, and wireless modules. The 40-PDIP package simplifies hand-soldered prototypes, while the 12 KB FLASH fits control logic and simple state machines. Operating from 2.0V-3.6V, it integrates easily with 3.3V-only peripherals and wireless modules without level translation.
تجویز کردہ
Pump and Valve Actuators
Small pumps and proportional valves benefit from the PIC18LF4439-I/P's motor-control PWM and 32 I/O pins for actuator drivers, position feedback encoders, and limit switches. The integrated 10-bit ADC supports current sensing and closed-loop proportional control. Industrial temperature grade (-40C to +85C) and through-hole PDIP package suit retrofit installations in industrial control cabinets.
تجویز کردہ
Educational and Hobby Electronics
The PIC18LF4439-I/P's 40-PDIP through-hole package and rich peripheral set make it ideal for educational labs and hobby projects. It is fully supported by Microchip's MPLAB X IDE, XC8 compiler, and a free simulator, with extensive application notes, code examples, and reference designs online. Breadboard-friendly form factor allows quick prototyping without SMD reflow equipment.
تجویز کردہ
Automotive Aftermarket Accessories
Aftermarket automotive accessories (auxiliary fans, lighting controllers, signal decoders) benefit from the PIC18LF4439-I/P's industrial temperature rating, motor-control PWM, and 32 I/O pins. Although NOT AEC-Q100 qualified, the part is widely used in non-safety automotive aftermarket products where automotive-grade is not required. Operating from 2.0V-3.6V with a separate regulator suits 12V automotive battery systems.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC18LF4439-I/P — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC18LF4439-I/ML | PIC18F4439-I/P | PIC18LF4331-I/P | PIC18LF4439-E/P |
|---|---|---|---|---|---|
| Package | 40-PDIP | 44-QFN (ML) - SMD only | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| FLASH Size | 12 KB | 12 KB | 12 KB | 8 KB (-33%) | 12 KB |
| RAM Size | 640 B | 640 B | 640 B | 768 B | 640 B |
| Operating Voltage | 2.0V-3.6V (LF) | 2.0V-3.6V | 4.2V-5.5V (F) | 2.0V-3.6V | 2.0V-3.6V |
| Max Clock Speed | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Extended -40C to +125C |
| Motor Control PWM | Yes (14-bit) | Yes (14-bit) | Yes (14-bit) | Yes (14-bit) | Yes (14-bit) |
اہم امتیازی خصوصیات
- Integrated motor-control PWM with 14-bit resolution and fault input (بمقابلہPIC18F4550-I/P)
- Low-voltage (LF) operation supports battery-powered designs (بمقابلہPIC18F4439-I/P)
- Dual sample-and-hold ADC for simultaneous motor current sensing (بمقابلہPIC18LF4331-I/P)
ڈیزائن نوٹس
Estimated: VDD=3.3V, IDD active at 40 MHz is approximately 15 mA per Microchip datasheet DS39630F. Use a 100 nF decoupling capacitor close to each VDD pin (pins 11 and 32) and a 10 uF bulk capacitor on the supply rail. Adding a ferrite bead on VDD helps suppress switching noise from digital outputs entering analog sections.
Route analog signals (AN0-AN7) away from digital PWM outputs to minimize coupled noise into ADC measurements. Keep the MCLR pin trace short, and place the pull-up resistor (typically 10 kOhm) close to the pin. For ICSP programming, expose the ICSPDAT (RB7/PGD), ICSPCLK (RB6/PGC), and MCLR pins on a 6-pin header for production programming access.
Estimated: at 3.3V VDD and 15 mA active current, power dissipation is approximately 50 mW, well below thermal limits of the 40-PDIP package (theta_JA ~50 C/W). Junction temperature rise is negligible (<3C). However, if driving 32 outputs at 20 mA each, dissipation can exceed 1 W - calculate PJ = (VDD - Vload_avg) x Iout x N before claiming thermal headroom.
Do not connect AVDD to VDD through a ferrite without bypassing - AVDRD noise degrades ADC accuracy. Never leave the MCLR pin floating - use a 10 kOhm pull-up to VDD. When using the LF (low-voltage) variant, ensure all I/O signals from external devices operate within 0 to VDD range, or add clamping to avoid exceeding VDD+0.3V absolute maximum.
تعمیل کی معلومات
RoHS compliant per Microchip product page; not AEC-Q100 qualified (industrial grade only). The /P suffix in PIC18LF4439-I/P indicates lead-free PDIP package per Microchip ordering conventions.
