PIC18F2431-I/MM Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
Microchip PIC18F2431-I/MM is an 8-bit PIC18 microcontroller with 40 MHz clock, 10-bit ADC, and motor-control PWM module in a compact QFN-28 package. Designed for high-performance brushless DC and stepper motor applications.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F2431-I/MM Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.7400(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of PIC18F2431-I/MM?
- 40 MHz clock speed with dedicated motor-control PWM module for precise brushless DC motor commutation
- 10-bit ADC with multiple input channels for real-time current sensing and feedback in motor drives
- Compact QFN-S-28 package for high-density motor controller PCB layouts
- PIC18 enhanced instruction set with hardware multiply for fast PID loop execution
What is PIC18F2431-I/MM used for?
The PIC18F2431-I/MM is purpose-built for brushless DC, stepper, and ACIM motor control applications in appliances, power tools, and industrial drives. Its dedicated motor-control PWM module and 40 MHz clock reduce firmware complexity for six-step commutation and field-oriented control implementations. It is also used in solar tracker controllers, robotic joints, and pump controllers where compact form factor and motor-drive peripherals are critical.
What are the specifications of PIC18F2431-I/MM?
| Pbfree Code | Yes |
| Manufacturer Package Code | QFN-S-28 |
| 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-PQCC-N28 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 3 |
| Number of I/O Lines | 24 |
| 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 | LCC28,.24SQ,25 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER |
| 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 | NO LEAD |
| Terminal Pitch | 0.65mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | 3A991.a.2 |
| HTS Code | 8542.31.00.15 |
| Country of Origin | Thailand |
Where can I find the PIC18F2431-I/MM datasheet?
PIC18F2431-I/MM Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for PIC18F2431-I/MM?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does PIC18F2431-I/MM's motor-control PWM module simplify brushless DC motor firmware development?
The PIC18F2431-I/MM includes a dedicated Power Control PWM module generating complementary PWM outputs with programmable dead-time at up to 40 MHz resolution. This hardware eliminates software bit-banging of high-side and low-side gate signals, significantly reducing firmware complexity for 3-phase BLDC commutation.
For a 24 V brushless motor driver design, can the PIC18F2431-I/MM handle the ADC sampling needed for current control?
Yes, the PIC18F2431-I/MM provides a 10-bit ADC with multiple channels for simultaneous phase current sampling in a 24 V motor drive. At 40 MHz clock, the ADC can complete conversions in under 2 µs, meeting the control loop bandwidth requirements for smooth torque control across -40°C to +85°C.
What board space does the PIC18F2431-I/MM QFN-28 package occupy compared to a DIP equivalent?
The PIC18F2431-I/MM QFN-S-28 package occupies approximately 4 mm x 4 mm footprint with 28 pins on a 0.5 mm pitch. This is roughly 75% smaller in board area compared to a 28-pin DIP package, enabling denser motor controller PCB designs with shorter signal traces.
When should a designer select PIC18F2431-I/MM instead of a general-purpose PIC18F25K22 for a motor application?
Choose PIC18F2431-I/MM when the design requires dedicated Power Control PWM hardware with dead-band insertion and fault protection, which PIC18F25K22 lacks. The PIC18F2431-I/MM also provides specialized ADC triggering synchronized with PWM cycles, critical for accurate phase current sampling in motor-control loops running at 20 kHz switching frequencies.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $6.6000 | $6.60 |
| 25+ | $6.5000 | $162.50 |
| 100+ | $5.4200 | $542.00 |
| 1000+ | $4.9800 | $4980.00 |
| 5000+ | $4.7400 | $23700.00 |
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