PIC18F4431T-I/PT Microchip Integrated Circuit (Quad Flat Packages) In Stock
PIC18F4431T-I/PT is an 8-bit PIC18 microcontroller from Microchip with 16 KB Flash, 768 bytes RAM, 34 I/O pins, and a 40 MHz clock in a TQFP-44 package. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat Packages
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F4431T-I/PT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.0500(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
- 8-bit PIC18 core running at up to 40 MHz with hardware multiply for efficient motor-control calculations
- 16 KB Flash and 768 bytes RAM with 34 I/O lines including ADC, PWM, and capture/compare peripherals
- TQFP-44 surface-mount package with RoHS-compliant lead-free finish for high-volume industrial production
Applications
The PIC18F4431T-I/PT is designed for motor-control applications including BLDC and stepper motor drives, power inverters, and embedded control systems. Its integrated PWM generators, ADC channels, and 40 MHz clock enable real-time current regulation and position feedback in compact 5 V or 3.3 V embedded systems.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TQFP-44 |
| Factory Lead Time | 7Weeks |
| 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 |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 768 |
| ROM (words) | 16384 |
| 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 |
| 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 | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Philippines, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC18F4431T-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
Frequently Asked Questions
What Flash and RAM does the PIC18F4431T-I/PT provide, and is 16 KB sufficient for a motor-control firmware?
The PIC18F4431T-I/PT includes 16 KB of program Flash and 768 bytes of data RAM; for a basic BLDC commutation firmware with 6-step control and UART telemetry, 16 KB is typically sufficient, though complex FOC algorithms may require an upgrade to the 64 KB PIC18F6621 or a dsPIC variant.
How many I/O pins does PIC18F4431T-I/PT have, and which communication peripherals are on-chip?
The device offers 34 I/O pins supporting UART, SPI, and I2C interfaces alongside dedicated PWM outputs and up to 13 ADC channels, covering the I/O needs of a typical 3-phase inverter gate-drive and current-sensing circuit.
At 40 MHz, can PIC18F4431T-I/PT execute a 20 kHz PWM interrupt routine without overrunning its CPU budget?
At 40 MHz the PIC18 core executes one instruction per 100 ns, providing 2000 instruction cycles per 20 kHz PWM period; a simple commutation ISR consuming 300-400 cycles leaves ample headroom for foreground tasks like serial communication and fault monitoring.
Is PIC18F4431T-I/PT RoHS compliant, and what is its lead-free package designation?
Yes, the PIC18F4431T-I/PT carries RoHS-compliant, lead-free terminations as indicated by the 'T' suffix in the MPN; it is packaged in a 44-pin TQFP with tin-silver-copper finish, meeting EU RoHS Directive 2011/65/EU requirements for industrial electronics.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $7.0100 | $7.01 |
| 100+ | $5.7600 | $576.00 |
| 1000+ | $5.2900 | $5290.00 |
| 5000+ | $5.0500 | $25250.00 |
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