PIC18F4331-I/PT Microchip Integrated Circuit (Quad Flat Packages) In Stock
Microchip PIC18F4331-I/PT is an 8-bit PIC18 microcontroller with 8 KB Flash, 768 bytes RAM, and a 9-channel 10-bit ADC, designed for motor control and power conversion. It runs up to 40 MHz and is housed in a 44-pin TQFP package. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat Packages
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F4331-I/PT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.7700(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Motor-control optimized 8-bit PIC18 core at 40 MHz with dedicated Power Control PWM module supporting complementary and full-bridge output modes
- 9-channel 10-bit ADC with simultaneous sampling capability for real-time current and voltage monitoring in motor-drive applications
- 8 KB self-programmable Flash and 768 bytes RAM in a 44-pin TQFP package with integrated input capture and quadrature encoder interface
Applications
The PIC18F4331-I/PT targets brushless DC motor control, power factor correction, and variable-speed drives where a dedicated Power Control PWM module and fast 10-bit ADC sampling are essential. Its quadrature encoder interface and input capture peripherals support closed-loop speed and position feedback without external logic. The device is also used in industrial power conversion, inverter designs, and HVAC compressor control.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TQFP-44 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| 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 Data RAM Width | 8 |
| 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 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 768 |
| ROM (words) | 8192 |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Speed | 40MHz |
| Supply Current-Max | 15mA |
| 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 |
| 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 | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Philippines, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC18F4331-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
What motor-control peripherals are built into PIC18F4331-I/PT?
The PIC18F4331-I/PT includes a dedicated Power Control PWM module with complementary and full-bridge output modes, a quadrature encoder interface for shaft position feedback, and a 9-channel 10-bit ADC with simultaneous sampling. Running at up to 40 MHz, these peripherals support closed-loop BLDC and stepper motor control without external driver ICs.
How much program memory and RAM does PIC18F4331-I/PT provide for control algorithm storage?
The PIC18F4331-I/PT offers 8 KB of self-programmable Flash for program storage and 768 bytes of SRAM for runtime data. This is sufficient for PID control loops, lookup tables, and communication stacks in embedded motor-drive or power-conversion firmware targeting 40 MHz operation.
What is the package of PIC18F4331-I/PT and how does it compare to a DIP alternative?
PIC18F4331-I/PT comes in a 44-pin TQFP package with a 10 mm x 10 mm body and 0.8 mm pitch. Compared to a 40-pin DIP, the TQFP footprint is substantially smaller, suits surface-mount production lines, and provides 4 additional I/O pins, making it preferable for compact motor control PCBs.
Can PIC18F4331-I/PT be used for power factor correction designs at mains frequencies?
Yes. The PIC18F4331-I/PT Power Control PWM module supports switching frequencies up to several hundred kHz, and its 10-bit ADC can sample 9 channels simultaneously. This allows real-time zero-crossing detection and duty-cycle adjustment required in active power factor correction stages operating at 50 Hz or 60 Hz mains input.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $6.4800 | $6.48 |
| 100+ | $5.4600 | $546.00 |
| 1000+ | $5.0300 | $5030.00 |
| 5000+ | $4.7700 | $23850.00 |
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