PIC18F4431-I/ML Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
PIC18F4431-I/ML is an 8-bit PIC18 microcontroller with 40 MHz max clock, hardware PWM for motor control, and 10-bit ADC. Available in QFN-44 package with in-stock worldwide shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F4431-I/ML Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.2400(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 PIC18F4431-I/ML?
- 8-bit PIC18 CPU core running up to 40 MHz for high-performance embedded control
- Integrated 10-bit ADC with multiple channels for precise analog signal acquisition
- Hardware PWM outputs optimized for motor drive and power conversion applications
- QFN-44 compact package enabling space-efficient PCB designs
- RoHS-compliant, lead-free construction meeting modern environmental standards
What is PIC18F4431-I/ML used for?
PIC18F4431-I/ML is well-suited for brushless DC motor control, servo drive systems, and industrial automation applications requiring precise PWM generation and analog feedback. Its integrated ADC and high-speed CPU make it ideal for inverter control, power factor correction circuits, and HVAC fan management. Designers also deploy it in embedded instrumentation, sensor data logging, and portable battery-powered devices needing efficient 8-bit processing.
What are the specifications of PIC18F4431-I/ML?
| Pbfree Code | Yes |
| Manufacturer Package Code | QFN-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-PQCC-N44 |
| 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 | LCC44,.31SQ,25 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY 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 | 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 | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Where can I find the PIC18F4431-I/ML datasheet?
PIC18F4431-I/ML Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for PIC18F4431-I/ML?
Compatible alternatives and drop-in replacements for PIC18F4431-I/ML:
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 40MHz, CMOS, PQCC44
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 40MHz, CMOS, PQCC44
Frequently Asked Questions
What is the maximum clock frequency supported by PIC18F4431-I/ML, and how does it affect motor control timing?
PIC18F4431-I/ML supports a maximum clock frequency of 40 MHz, enabling instruction execution at up to 10 MIPS. This allows tight PWM control loops for brushless DC motors with switching frequencies up to 20 kHz, delivering smooth torque response and minimal audible noise in motor drive applications.
How many ADC channels does PIC18F4431-I/ML provide, and what is the resolution?
The PIC18F4431-I/ML integrates a 10-bit ADC with up to 13 analog input channels. This resolution provides 1024 discrete levels over the reference voltage range, suitable for precise current sensing, temperature monitoring, and position feedback in closed-loop motor control and industrial measurement systems.
Which package does PIC18F4431-I/ML use, and what are its pin count and footprint benefits?
PIC18F4431-I/ML comes in a QFN-44 package with 44 pins. The exposed thermal pad improves heat dissipation, and the compact 8x8 mm footprint reduces PCB area compared to TQFP alternatives, making it suitable for space-constrained motor driver boards and industrial control modules.
When would PIC18F4431-I/ML be chosen over a simpler PIC16 device for a power conversion design?
PIC18F4431-I/ML is preferred over PIC16 devices when the application requires the PIC18 enhanced instruction set, hardware multiply support, and dedicated power control PWM peripherals operating up to 40 MHz. For a 3-phase inverter needing 6 complementary PWM outputs with dead-band insertion and fault detection, the PIC18F4431 provides built-in hardware that PIC16 devices lack, reducing firmware complexity and improving reliability.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $7.2800 | $7.28 |
| 25+ | $6.3000 | $157.50 |
| 50+ | $6.2600 | $313.00 |
| 100+ | $5.9900 | $599.00 |
| 1000+ | $5.5000 | $5500.00 |
| 5000+ | $5.2400 | $26200.00 |
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