PIC18F4221-I/PT Microchip Integrated Circuit (Quad Flat Packages) In Stock
Microchip PIC18F4221 is an 8-bit enhanced Flash microcontroller running at up to 40 MHz with 4 KB Flash, 512 bytes RAM, 36 I/O pins, 13-channel 10-bit ADC, and CCP modules in a TQFP-44 package. From $2.50 in stock worldwide shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat Packages
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F4221-I/PT Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 40 MHz PIC18 enhanced core with hardware multiply instruction delivering 10 MIPS throughput and deterministic interrupt latency for real-time control and PWM generation
- 13-channel 10-bit ADC with auto-conversion trigger from timers enabling synchronized analog sampling in motor-drive and power-management applications
- Three capture/compare/PWM (CCP) modules supporting up to 10-bit resolution PWM at configurable frequencies for multi-axis servo and LED dimming control
Applications
The PIC18F4221 is well suited for motor-drive controllers, home appliance panels, and industrial sensor hubs where 40 MHz throughput and 36 I/O lines provide sufficient headroom for concurrent ADC sampling, UART communication, and PWM generation within a single 4.4 mm x 4.4 mm TQFP-44 package. Consumer electronics like smart thermostats and sewing machine controllers rely on its 13-channel 10-bit ADC and three CCP modules to handle knob inputs, display outputs, and precision timing simultaneously. Its 4 KB self-programmable Flash also supports field-updatable firmware in low-volume industrial equipment.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TQFP-44 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Has ADC | YES |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC18 |
| Clock Frequency-Max | 40MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | S-PQFP-G44 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 3 |
| Number of I/O Lines | 36 |
| Number of Serial I/Os | 1 |
| Number of Timers | 6 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TQFP44,.39SQ,31 |
| Package Shape | SQUARE |
| Package Style | FLATPACK, THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 512 |
| ROM (words) | 4096 |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Speed | 40MHz |
| Supply Current-Max | 23mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 4.2V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.8mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Quad Flat Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | 3A991.A.2 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Philippines, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC18F4221-I/PT:
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 40MHz, CMOS, PQFP44
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 40MHz, CMOS, PQFP44
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 40MHz, CMOS, PQFP44
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 40MHz, CMOS, PQFP44
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 40MHz, CMOS, PQFP44
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 40MHz, CMOS, PQFP44
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 40MHz, CMOS, PQFP44
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 40MHz, CMOS, PQFP44
Frequently Asked Questions
How fast is the PIC18F4221 CPU, and how many instructions per second does it execute at maximum clock?
The PIC18F4221 operates at up to 40 MHz using an external crystal or PLL input, executing one instruction per 4 clock cycles (PIC18 enhanced architecture) for a throughput of 10 MIPS, sufficient for real-time PID control loops, multi-channel ADC sweeps, and concurrent USART communication in embedded systems.
How many analog input channels does the PIC18F4221 ADC support, and what is the conversion resolution and speed?
The PIC18F4221 integrates a 13-channel, 10-bit successive-approximation ADC with a minimum acquisition time of 2.4 µs and a conversion time of 1.6 µs at 40 MHz, enabling sampling of up to 13 sensors such as temperature, current-sense shunts, and potentiometers without external MUX ICs.
What PWM capabilities does the PIC18F4221 offer for motor-drive or LED-dimming designs?
The device includes 3 capture/compare/PWM (CCP) modules each producing up to 10-bit resolution PWM with programmable frequency from approximately 300 Hz to 20 kHz at 40 MHz clock, enabling independent duty-cycle control of 3 motor phases or 3 LED channels without external timers or gate-driver logic.
For a compact industrial control PCB, how much space does the TQFP-44 package of the PIC18F4221-I/PT occupy?
The TQFP-44 package has a 10 mm x 10 mm body with 0.8 mm lead pitch, occupying approximately 100 mm² of PCB area including courtyard, which is about half the footprint of an equivalent DIP-40 package at 52 mm x 15 mm, making it practical for dense 4-layer industrial control boards.
When is the PIC18F4221 a cost-effective replacement for PIC18F4520 in a new 8-bit control design?
When the application requires 4 KB or less of Flash and the bill-of-materials target is below $3 per unit, the PIC18F4221 is preferable to the PIC18F4520 (which provides 32 KB Flash at a higher price), because the 40 MHz core, 13-channel ADC, and 3 CCP modules are identical, so firmware can be reused without modification by adjusting only the linker memory map.
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