PIC18F2221T-I/ML - 4KB Flash 8-bit MCU, 28-QFN | Microchip
MPN: PIC18F2221T-I/ML ✓ فعالPIC18F2221T-I/ML جائزہ
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data bus, integrating CPU core, program memory (Flash), data memory (RAM), peripheral set, and I/O ports. The PIC18F family is the enhanced 8-bit tier within Microchip's PIC architecture, sitting above PIC16F and below the dsPIC/PIC24 16-bit families, and is upward-compatible with PIC16C5X, PIC12CXXX, PIC16CXX, and PIC17CXX devices for portable firmware. Within the broader semiconductor hierarchy, an 8-bit MCU belongs to integrated circuits, then microcontrollers, then embedded controllers, and finally the category of embedded processing.
Key features include 4 KB (2K x 16) Flash program memory, 512 bytes SRAM, 256 bytes EEPROM, ten 10-bit ADC channels with nanoWatt Technology power management, and enhanced Capture/Compare/PWM (ECCP) plus CCP modules. The part operates from 2.0 V to 5.5 V across the industrial temperature window, supports internal 31 kHz to 8 MHz oscillator blocks, and provides up to 22 I/O pins with high-current sink/source capability.
The device is built on a low-power CMOS process with nanoWatt Technology dynamic power switching, idle/sleep modes, and oscillator start-up timer. Hardware peripherals include a master synchronous serial port (MSSP) configurable as SPI or I2C, an enhanced USART with LIN support, and a 10-bit ADC with auto-acquisition and 8 input-mux channels convertible in groups.
Typical applications include consumer white goods, motor-control sensor interfaces, low-power remote sensing nodes, industrial control panels, and battery-charging accessory controllers where Flash re-programmability, low sleep current, and small footprint matter. The QFN-28 package suits hand-held and space-constrained designs. Program development is supported by MPLAB X IDE, MPLAB XC8 compiler, and PICkit or ICD programmer tools for in-circuit debug.
When designing with this part, note that the QFN-28 PCB footprint requires a 6x6 mm land pattern with a central thermal pad for ground and thermal dissipation - omitting the thermal pad will force current limits. Decouple VDD with a 0.1 uF and bulk 1-10 uF capacitor pair close to the pins, and follow Microchip's QFN landing-pattern guideline for via stitching under the e-pad.
This page synthesizes distributor pricing, tape-and-reel drop-in alternatives from the same Microchip PIC18F family, and practical design notes not found in the manufacturer datasheet.
کے لیے ڈراپ اِن متبادل PIC18F2221T-I/ML — 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 PIC18F2221T-I/ML (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Core Architecture, ADC, Maximum CPU Speed, Operating Temperature.
PIC18F2221-I/ML
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC18F2321T-I/ML
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18F2221T-E/ML
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہ📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC18LF2221T-I/ML
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18F1320T-I/ML
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18F2221T-I/ML زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | PIC18F (Enhanced 8-bit RISC) |
| Program Memory (Flash) | 4 KB (2K x 16) |
| Data Memory (SRAM) | 512 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 40 MHz / 10 MIPS |
| Operating Voltage | 2.0 V to 5.5 V |
| I/O Pins | Up to 22 |
| ADC | 10-bit, up to 10 channels |
| آپریٹنگ درجہ حرارت | -40C to +85C (Industrial) |
| پیکیج | QFN-28 (ML) 6x6 mm with exposed pad |
| ماؤنٹنگ ٹائپ | Surface Mount |
| Instruction Set | 77 instructions (single-word) |
| Hardware Multiply | Yes (8x8 single cycle) |
| PWM Channels | Enhanced CCP + CCP modules |
| Communication | MSSP (SPI/I2C), Enhanced USART |
| Power-Saving Modes | nanoWatt Technology (idle/sleep) |
| RoHS اسٹیٹس | Compliant |
PIC18F2221T-I/ML پن کنفیگریشن
| پن 1 | RA2/AN2/VREF-/CVREF — PORTA bit 2 / Analog input 2 / VREF- / Comparator VREF output |
| پن 2 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / VREF+ |
| پن 3 | RA4/AN4/T0CKI/C1OUT — PORTA bit 4 / Analog input 4 / Timer0 clock / Comparator1 output |
| پن 4 | RA5/AN5/SS/HLVDIN/C2OUT — PORTA bit 5 / Analog input 5 / SPI slave select / HLVD input / Comparator2 output |
| پن 5 | VDD — Positive supply voltage |
| پن 6 | VSS — Ground reference |
| پن 7 | RA7/OSC1/CLKI — PORTA bit 7 / Oscillator crystal input / External clock in |
| پن 8 | RA6/OSC2/CLKO — PORTA bit 6 / Oscillator crystal output / Clock out |
| پن 9 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| پن 10 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 I/O |
| پن 11 | RC2/CCP1 — PORTC bit 2 / Enhanced CCP1 I/O |
| پن 12 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| پن 13 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| پن 14 | RC5/SDO — PORTC bit 5 / SPI data out |
| پن 15 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| پن 16 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| پن 17 | RB7/PGD — PORTB bit 7 / ICSP data |
| پن 18 | RB6/PGC — PORTB bit 6 / ICSP clock |
| پن 19 | RB5/PGM — PORTB bit 5 / ICSP programming low-voltage |
| پن 20 | RB4 — PORTB bit 4 (interrupt-on-change) |
| پن 21 | RB3/AN9 — PORTB bit 3 / Analog input 9 |
| پن 22 | RB2/AN8 — PORTB bit 2 / Analog input 8 |
| پن 23 | RB1/AN10 — PORTB bit 1 / Analog input 10 |
| پن 24 | RB0/AN12/INT0/FLT0 — PORTB bit 0 / Analog input 12 / External interrupt 0 / ECCP fault input |
| پن 25 | MCLR/VPP/RE3 — Master clear reset / Programming voltage / PORTE bit 3 |
| پن 26 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| پن 27 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| پن 28 | VSS — Ground reference (second ground pin) |
عام استعمالات
PIC18F2221T-I/ML کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Sensor Interface Board, Battery-Powered Remote Sensor Node, Low-Volume Motor Control (Fan/Pump Driver), Consumer White Goods Control Panel, USB HID / CDC Adapter Dongle, Educational / Hobby Development Platform.
Industrial Sensor Interface Board
The PIC18F2221T-I/ML fits industrial 4-20 mA sensor interfaces because its 10-bit ADC with 10 input channels digitizes multiple analog sensor signals while 4 KB Flash hosts the linearization, calibration, and HART-like protocol state machine. Its 2.0-5.5 V operating range accepts 3.3 V and 5 V rails commonly found in industrial field-side loops, and the -40C to +85C industrial window covers most factory environments. The MSSP provides SPI for digital sensor readout (e.g., external temperature ICs) while the enhanced USART handles RS-485 sensor-network wiring. At 10 MIPS, the device can sustain 100 Hz acquisition with on-the-fly FIR filtering before pushing results to a host.
تجویز کردہ
Battery-Powered Remote Sensor Node
The PIC18F2221T-I/ML suits battery-powered remote sensing because its nanoWatt Technology power management offers idle/sleep modes that drop quiescent current into the sub-microamp range. The 4 KB Flash holds periodic wake-up measurement routines, time-stamping, and low-power RF packet handlers, while 512 B SRAM buffers the latest sample before transmission. Operating at 2.0-5.5 V supports direct connection to a single-cell Li-ion or two AA cells without a boost converter, simplifying BOM. The QFN-28 6x6 mm package fits sub-1 square inch sensor-node PCBs common in environmental and asset-monitoring deployments.
تجویز کردہ
Low-Volume Motor Control (Fan/Pump Driver)
The PIC18F2221T-I/ML drives small brushed DC or BLDC fan and pump controllers thanks to its Enhanced CCP + CCP dual-PWM modules that can generate complementary drive signals for low-side MOSFET bridges. The 10-bit ADC samples back-EMF, current sense, or tachometer feedback for closed-loop speed control, while 4 KB Flash fits PID loop, soft-start, and fault-handler code. Hardware timer resources support a 25 kHz PWM typical switching frequency without CPU overhead. The QFN-28 footprint is small enough to fit inside the motor housing for integrated driver PCBs used in appliance fans.
تجویز کردہ
Consumer White Goods Control Panel
The PIC18F2221T-I/ML fits white-goods control panels (washing machines, dishwashers, microwave ovens) because 4 KB Flash holds the user-interface state machine plus sensor processing, and the 10-bit ADC reads keypad/encoder inputs and temperature sensors. The Enhanced USART drives a serial LCD or links to the main appliance MCU, while the MSSP (SPI) drives an LED or segment-display controller. Industrial -40C to +85C tolerates the hot environment inside an appliance chassis near the heater element. Low-cost tape-and-reel QFN-28 supports high-volume SMT assembly lines.
تجویز کردہ
USB HID / CDC Adapter Dongle
The PIC18F2221T-I/ML with the Microchip USB stack implements a low-cost USB HID or CDC adapter (keyboard, mouse, COM port). The MSSP can drive a SPI Flash for HID descriptor storage, while 4 KB Flash fits class-compliant USB stacks. The internal 31 kHz to 8 MHz oscillator block generates the 48 MHz USB clock via PLL, eliminating external crystals in many designs. The QFN-28 footprint fits inside compact dongle enclosures. This is a common use case for the PIC18F2xK20 family when more memory is needed, but the PIC18F2221T-I/ML works for minimal HID-only dongles.
تجویز کردہ
Educational / Hobby Development Platform
The PIC18F2221T-I/ML is a strong teaching MCU because the PIC18F family is the standard teaching platform in most university embedded-systems curricula, with 4 KB Flash large enough for multi-module student projects yet small enough to teach linker optimization. The QFN-28 surface-mount form factor exercises modern PCB-design skills, while the easy-to-program PICkit-3/4 in-circuit debug workflow reduces classroom setup time. The 77-instruction RISC core provides a clean introduction to assembly and C programming for embedded learners. The wide software ecosystem - MPLAB X, XC8 compiler, and free Microchip libraries - lowers the adoption barrier for hobbyist and student projects.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC18F2221T-I/ML — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC18F2221-I/ML | PIC18F2321T-I/ML | PIC18F2221T-E/ML | PIC18LF2221T-I/ML | PIC18F1320T-I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Package | QFN-28 (ML) 6x6 mm | QFN-28 (ML) 6x6 mm - same | QFN-28 (ML) 6x6 mm - same | QFN-28 (ML) 6x6 mm - same | QFN-28 (ML) 6x6 mm - same | QFN-28 (ML) 6x6 mm - same |
| Flash Memory | 4 KB | 4 KB - same | 8 KB (+100%) | 4 KB - same | 4 KB - same | 4 KB - same |
| SRAM | 512 bytes | 512 bytes - same | 512 bytes - same | 512 bytes - same | 512 bytes - same | 512 bytes - same |
| ADC Channels / Resolution | 10 ch / 10-bit | 10 ch / 10-bit - same | 10 ch / 10-bit - same | 10 ch / 10-bit - same | 10 ch / 10-bit - same | 8 ch / 10-bit (-20%) |
| Operating Voltage | 2.0 V to 5.5 V | 2.0 V to 5.5 V - same | 2.0 V to 5.5 V - same | 2.0 V to 5.5 V - same | 1.8 V to 3.6 V (lower upper rail) | 2.0 V to 5.5 V - same |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C - same | -40C to +85C - same | -40C to +125C (Extended) | -40C to +85C - same | -40C to +85C - same |
| nanoWatt Technology | Yes | Yes - same | Yes - same | Yes - same | Yes - same | No |
| Packaging | Tape & Reel (T) | Tray (no T) | Tape & Reel - same | Tape & Reel - same | Tape & Reel - same | Tape & Reel - same |
اہم امتیازی خصوصیات
- Enhanced 8-bit PIC18F core with 4 KB Flash in smallest QFN-28 package (بمقابلہPIC18F1320T-I/ML)
- Firmware-upgradable to PIC18F2321T-I/ML on same PCB (بمقابلہPIC18F2321T-I/ML)
- Industrial-grade vs Extended-grade temperature variants in same package (بمقابلہPIC18F2221T-E/ML)
ڈیزائن نوٹس
The QFN-28 (ML) package exposes a thermal/ground pad on the underside. This pad MUST be soldered to the PCB thermal land for electrical ground and heat dissipation. Per Microchip application note AN2042, use a 4.0x4.0 mm thermal pad with a via array (4 to 8 thermal vias) stitching to the ground plane. Omitting the thermal pad increases thermal resistance from 31 C/W to >80 C/W and degrades ADC and oscillator performance.
Decouple VDD (pin 5) with both a 0.1 uF ceramic capacitor (high-frequency bypass) and a 1-10 uF bulk capacitor (low-frequency transient), placed within 5 mm of the IC. Use VSS (pins 6 and 28) as a low-impedance ground return path with a continuous ground plane under the QFN footprint. Add a 10-100 ohm ferrite bead if the supply is shared with an analog ADC rail. Verify on the datasheet that your decoupling matches VDD-VSS pair impedance requirements.
When migrating from PIC18F2221 to PIC18F2321, you get 8 KB Flash but the device ID changes - update your MPLAB project linker script or ICSP device selection. The PIC18F2221T-I/ML industrial temperature range is -40C to +85C; for automotive or extended-industrial (-40C to +125C) you need PIC18F2221T-E/ML. Also note that the T-suffix denotes tape-and-reel - if you order non-T (PIC18F2221-I/ML) you receive tray parts not compatible with SMT pick-and-place reels.
تعمیل کی معلومات
RoHS compliant per Microchip product page. Lead-free matte-tin QFN plating per ML suffix. Industrial temperature grade - AEC-Q100 not applicable for this part. REACH compliant per Microchip regulatory statement.
