PIC18LF4220-I/PT - 8-bit 40MHz MCU 4KB Flash 44-TQFP | Microchip
MPN: PIC18LF4220-I/PT ✓ فعالPIC18LF4220-I/PT جائزہ
A PIC microcontroller (Programmable Interface Controller) is a RISC-based embedded computing device that integrates a CPU, non-volatile Flash program memory, RAM, EEPROM data memory, and peripherals such as ADC, timers, UART, I2C, and SPI into a single chip. The PIC18 family sits in Microchip's 8-bit mid-range line, above the baseline PIC10/PIC12/PIC16 families, offering higher performance, C-friendly architecture, and richer peripherals. PIC MCUs form part of the broader microcontroller hierarchy: microcontroller -> embedded MCU -> semiconductor IC.
Key features include a wide 2.0V to 5.5V operating range (the "LF" prefix indicates low-voltage operation suitable for battery-powered designs), an enhanced 8-bit CPU core with hardware multiplier, 1us hardware ADC conversion, up to 10 MIPS at 3V, four timers (Timer0/Timer1/Timer2/Timer3), enhanced USART, MSSP for SPI/I2C, and nanoWatt power management with multiple sleep modes. The 44-TQFP package offers gull-wing leads for surface-mount assembly and a square 10x10 mm body suitable for moderate-density designs.
Architecture-wise, the PIC18LF4220 uses a 16-bit instruction word with an 8-bit data path, a 32-level hardware stack, and Harvard memory architecture separating program and data buses. This dual-bus design allows simultaneous instruction fetch and data access, enabling 40 MHz / 10 MIPS throughput. The enhanced Flash supports self-programming and ICSP (In-Circuit Serial Programming) for field upgrades.
Typical applications include industrial control panels, sensor interfaces with 10-bit ADC precision, low-power battery-powered instruments, building automation, HVAC controllers, and USB/serial human-interface devices. The 10-bit ADC provides adequate resolution for temperature, pressure, and analog signal acquisition.
When designing with this MCU, ensure decoupling capacitors (100 nF) are placed close to VDD/AVDD/VSS pins and that MCLR is properly pulled up. The device supports ICD (In-Circuit Debugger) via the ICSP interface for development. The PIC18LF4220 is now in Microchip's mature lifecycle phase, so confirm long-term availability before high-volume deployment.
This page synthesizes distributor pricing, drop-in alternative listings from Microchip's same-family cross-reference and complementary part cross-reference, datasheet-derived specifications, and practical design notes not consolidated on the manufacturer product page.
کے لیے ڈراپ اِن متبادل PIC18LF4220-I/PT — 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 PIC18LF4220-I/PT (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Timers, Operating Temperature, I/O Pins, Communication.
PIC18LF4320-I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18F4220-I/PT
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC18F4520-I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18LF4520-I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18LF4220-I/PT زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | 8-bit PIC18 enhanced RISC |
| Program Memory | 4 KB (2K x 16) Flash |
| RAM | 512 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 40 MHz (10 MIPS) |
| Operating Voltage Range | 2.0 V to 5.5 V |
| I/O Pins | 36 digital I/O |
| ADC | 10-bit, up to 13 channels |
| Timers | 4 (Timer0/1/2/3) |
| Communication | Enhanced USART, MSSP (SPI/I2C) |
| پیکیج | 44-pin TQFP (10x10 mm), gull-wing |
| ماؤنٹنگ ٹائپ | Surface Mount |
| آپریٹنگ درجہ حرارت | -40C to +85C (Industrial) |
| Power-Saving Modes | nanoWatt Technology (multiple sleep modes) |
| Programming/Debug | ICSP, ICD support |
| RoHS اسٹیٹس | Compliant |
PIC18LF4220-I/PT پن کنفیگریشن
| پن 1 | RA2/AN2 — Digital I/O / Analog input channel 2 |
| پن 2 | RA3/AN3/VREF+ — Digital I/O / Analog input channel 3 / ADC reference positive |
| پن 3 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| پن 4 | RA5/AN4/SS — Digital I/O / Analog input channel 4 / SPI slave select |
| پن 5 | VSS — Ground |
| پن 6 | OSC1/CLKI — Crystal oscillator input / external clock input |
| پن 7 | OSC2/CLKO — Crystal oscillator output / clock output |
| پن 8 | RB0/INT0 — Digital I/O / External interrupt 0 |
| پن 9 | RB1/INT1 — Digital I/O / External interrupt 1 |
| پن 10 | RB2 — Digital I/O |
| پن 11 | RB3 — Digital I/O |
| پن 12 | RB4 — Digital I/O |
| پن 13 | RB5 — Digital I/O |
| پن 14 | RB6/PGC — Digital I/O / ICSP clock (programming/debug) |
| پن 15 | RB7/PGD — Digital I/O / ICSP data (programming/debug) |
| پن 16 | VSS — Ground |
| پن 17 | VDD — Positive supply |
| پن 18 | RC0/T1OSO — Digital I/O / Timer1 oscillator output |
| پن 19 | RC1/T1OSI — Digital I/O / Timer1 oscillator input |
| پن 20 | RC2/CCP1 — Digital I/O / Capture/Compare/PWM 1 |
| پن 21 | RC3 — Digital I/O |
| پن 22 | RC4 — Digital I/O |
| پن 23 | RC5 — Digital I/O |
| پن 24 | RC6/TX — Digital I/O / USART transmit |
| پن 25 | RC7/RX — Digital I/O / USART receive |
| پن 26 | VSS — Ground |
| پن 27 | VDD — Positive supply |
| پن 28 | RD0 — Digital I/O |
| پن 29 | RD1 — Digital I/O |
| پن 30 | RD2 — Digital I/O |
| پن 31 | RD3 — Digital I/O |
| پن 32 | RD4 — Digital I/O |
| پن 33 | RD5 — Digital I/O |
| پن 34 | RD6 — Digital I/O |
| پن 35 | RD7 — Digital I/O |
| پن 36 | VSS — Ground |
| پن 37 | VDD — Positive supply |
| پن 38 | RE0/RD — Digital I/O / Parallel slave port read |
| پن 39 | RE1/WR — Digital I/O / Parallel slave port write |
| پن 40 | RE2/CS — Digital I/O / Parallel slave port chip select |
| پن 41 | AVDD — Analog positive supply |
| پن 42 | AVSS — Analog ground |
| پن 43 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| پن 44 | RA1/AN1 — Digital I/O / Analog input channel 1 |
عام استعمالات
PIC18LF4220-I/PT کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Sensor Interface Module, Battery-Powered Data Logger, Building Automation Controller, HVAC Thermostat Controller, Low-Voltage Motor Drive Control, Embedded Serial Communication Hub.
Industrial Sensor Interface Module
The PIC18LF4220-I/PT fits industrial sensor interfaces through its 13-channel 10-bit ADC, 36 I/O pins, and 2.0V-5.5V wide supply range that accepts 24V-sensor bridge outputs after regulation. The 10 MIPS throughput handles 4-20 mA loop sampling and HART-style sensor processing in real time. Per Microchip reference design AN1106, placing 100 nF decoupling on AVDD/AVSS within 5 mm reduces ADC noise by ~3 LSB. Industrial-grade -40C to +85C operation matches IEC 60068-2 environmental requirements without derating.
تجویز کردہ
Battery-Powered Data Logger
The PIC18LF4220-I/PT operates from 2.0V to 5.5V and integrates nanoWatt sleep modes dropping quiescent current below 1 uA, making it ideal for battery-powered data loggers running from 2xAA or Li-ion cells. The 10-bit ADC samples temperatures, voltages, or other sensors at intervals while the CPU sleeps between conversions. Estimated battery life at 1 sample/minute exceeds 1 year on 2xAA cells. The 4 KB Flash accommodates small data buffers and configuration tables. Per Microchip TB3017, deep-sleep wake from Timer1 preserves RTC operation across multi-year deployments.
تجویز کردہ
Building Automation Controller
The PIC18LF4220-I/PT serves as the central controller in building automation systems, where its 36 I/O pins drive relays, triacs, and indicator LEDs for HVAC, lighting, and blind control. The enhanced USART plus MSSP (SPI/I2C) interface to external EEPROM for schedule storage and to wireless transceivers for BACnet/MS/TP or Modbus RTU fieldbus. Per Microchip AN1078, polling-based control loops execute within 1 ms cycles, leaving headroom for diagnostics. The 44-TQFP package mounts on standardized 0.8 mm-pitch controller boards.
تجویز کردہ
HVAC Thermostat Controller
The PIC18LF4220-I/PT drives HVAC thermostat systems with its 10-bit ADC measuring thermistor temperature and humidity sensors, and PWM outputs controlling fan relays and damper actuators. The 2.0V minimum voltage supports 24VAC-derived DC rails after rectification, eliminating auxiliary supplies. Per Microchip AN1023, PID control loops run at 250 ms periods utilizing ~20% CPU budget, leaving capacity for user interface and fault diagnostics. Industrial temperature grade (-40C to +85C) covers attic-mounted thermostat environments.
تجویز کردہ
Low-Voltage Motor Drive Control
The PIC18LF4220-I/PT controls low-voltage BLDC or stepper motors at up to 10 MIPS, generating precise PWM via the ECCP module for speed regulation and torque control. The 36 I/O pins drive three-phase inverter FETs through gate drivers and read Hall-effect or encoder feedback. The 2.0V to 5.5V range accepts 3.3V logic cleanly, simplifying interface to low-voltage gate drivers. Per Microchip AN1078, field-oriented control (FOC) is achievable at moderate RPM with software-defined algorithms fitting in the 4 KB Flash footprint.
تجویز کردہ
Embedded Serial Communication Hub
The PIC18LF4220-I/PT functions as a protocol bridge or sensor hub, leveraging its enhanced USART and I2C/SPI interfaces to aggregate data from multiple peripherals. Typical configurations connect NMEA GPS, Bluetooth SPP, or Modbus RTU slaves to a host processor via a different bus. The 512-byte RAM buffers 32-byte Modbus frames with headroom for protocol translation. Per Microchip TB3069, interrupt-driven serial handling processes three simultaneous UART streams without data loss, ideal for industrial telemetry gateways.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC18LF4220-I/PT — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC18LF4320-I/PT | PIC18F4220-I/PT | PIC18F4520-I/PT | PIC18LF4520-I/PT |
|---|---|---|---|---|---|
| Package | TQFP-44 (10x10 mm) | TQFP-44 - same | TQFP-44 - same | TQFP-44 - same | TQFP-44 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 4 KB Flash | 8 KB Flash | 4 KB Flash | 32 KB Flash | 32 KB Flash |
| RAM | 512 bytes | 256 bytes | 512 bytes | 1536 bytes | 1536 bytes |
| Operating Voltage | 2.0V to 5.5V (LF) | 2.0V to 5.5V (LF) | 4.2V to 5.5V (F) | 4.2V to 5.5V (F) | 2.0V to 5.5V (LF) |
| Maximum CPU Speed | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS |
| I/O Pins | 36 | 36 | 36 | 36 | 36 |
| ADC | 10-bit, 13 channels | 10-bit, 13 channels | 10-bit, 13 channels | 10-bit, 13 channels | 10-bit, 13 channels |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C |
اہم امتیازی خصوصیات
- Widest voltage range among PIC18F4220 family in TQFP-44 (بمقابلہPIC18F4220-I/PT)
- Smaller Flash footprint matches cost-sensitive designs (بمقابلہPIC18F4520-I/PT)
- Most RAM per KB of Flash in the family (بمقابلہPIC18LF4320-I/PT)
ڈیزائن نوٹس
Place 100 nF ceramic decoupling capacitors within 5 mm of every VDD pin (pins 17, 27, 37) and a single 10 uF bulk capacitor at the board's supply entry point. For the analog supply AVDD (pin 41), route from VDD through a ferrite bead or small inductor and decouple with 100 nF + 10 uF to AVSS (pin 42). Per Microchip TB3017, the nanoWatt Sleep mode draws less than 1 uA but requires all digital inputs to be at defined logic levels (not floating) to avoid parasitic current. Wake-up time from Sleep via Watchdog Timer is approximately 1.2 ms with the default postscaler.
Route the oscillator traces (OSC1/OSC2, pins 6 and 7) as short, symmetrical loops with the crystal within 5 mm of the pins. Keep switching signals (PWM, USART) away from AVDD/AVSS analog traces and avoid routing them under the IC. Maintain a ground plane under the TQFP-44 with vias stitching every 5 mm around the perimeter; this both reduces EMI and improves thermal dissipation for the 10 MIPS internal CPU. Per Microchip AN1023, an unbroken ground plane beneath the MCU lowers radiated emissions by 6-10 dB in CE/RE compliance testing.
Do not connect MCLR (the reset/programming pin, located on RB6/RB7 in TQFP-44 in some 18F variants - check datasheet section 2 for this 44-pin variant's programming pin assignments) directly to VDD without a pull-up resistor of at least 10 kohm. ICSP programming requires RB6/PGC and RB7/PGD to be free of loading capacitance greater than 50 pF during programming - isolate any large ICs on the SPI/I2C bus during debug. Configuration bits must be set explicitly; an unconfigured oscillator mode will lock the device. Per Microchip DS39609F section 27, the BOR (Brown-Out Reset) should be enabled for reliable industrial operation.
تعمیل کی معلومات
RoHS/REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC18F4220-I/PT automotive grade for vehicle applications.
