PIC18F2431-I/SO Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip PIC18F2431-I/SO is an 8-bit PIC18 microcontroller running at up to 40 MHz with integrated ADC and hardware PWM in a 28-pin SOIC package. Optimized for motor control with dedicated power-control PWM and fault-protection logic. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F2431-I/SO 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
- 8-bit PIC18 core clocked at up to 40 MHz delivering fast instruction execution for time-critical motor-control algorithms
- Dedicated Power Control PWM (PCPWM) module with up to 8 channels enabling direct three-phase inverter drive
- Integrated multi-channel ADC for real-time current and speed sensing without external analog conversion hardware
- 28-pin SOIC package with RoHS-compliant lead-free construction and an 11-week factory lead time for predictable supply planning
Applications
The PIC18F2431-I/SO is purpose-built for brushless DC motor control, variable-speed AC drive, and power-conversion applications that demand a compact 8-bit controller with hardware PWM generation. Its PCPWM module and on-chip ADC allow direct closed-loop current control in 3-phase inverter designs without additional gate-driver ICs. The device also suits appliance motor controllers, HVAC fan drives, and industrial pump controls where a 28-pin SOIC footprint simplifies board layout and reduces BOM cost.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-28 |
| Factory Lead Time | 11Weeks |
| 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 | R-PDSO-G28 |
| 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 | SOP28,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 250 |
| 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 | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| ## PIC18F2431-I/SO Alternates Showing results | Image |
| Package | Small Outline Packages |
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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC18F2431-I/SO:
suggested
suggested
Frequently Asked Questions
What maximum clock speed does the PIC18F2431-I/SO support and how does it benefit motor-control loops?
The PIC18F2431-I/SO supports a maximum clock frequency of 40 MHz. At this speed the PIC18 core can execute single-cycle instructions fast enough to run closed-loop current-control algorithms, update PWM duty-cycle registers, and service ADC conversion interrupts within the tight timing budgets demanded by high-speed brushless motor commutation sequences.
How many PWM channels does the PIC18F2431-I/SO provide for three-phase motor-drive designs?
The PIC18F2431-I/SO includes a dedicated Power Control PWM module with up to 8 output channels. This is sufficient to generate complementary gate signals for a full three-phase bridge inverter, including dead-time insertion and fault-shutdown logic, reducing external gate-driver complexity and PCB component count in variable-speed motor-drive applications.
Is the PIC18F2431-I/SO RoHS compliant, and what is the typical factory lead time?
Yes, the PIC18F2431-I/SO carries a Pb-free, RoHS-compliant designation. The factory lead time is approximately 11 weeks for standard orders. Designers building compliant motor-control products for EU and Asian markets should account for this lead time when planning production runs and maintaining safety stock levels.
For a compact motor-control PCB, how does the 28-pin SOIC package of the PIC18F2431-I/SO compare to a larger PDIP option?
The 28-pin SOIC package of the PIC18F2431-I/SO occupies roughly 10.5 mm x 7.5 mm of PCB area, significantly less than a 28-pin PDIP at 36 mm x 9.5 mm. The surface-mount SOIC footprint enables automated reflow assembly, tighter component placement around the power stage, and a thinner board stack-up suitable for enclosed motor-drive modules where height clearance is constrained.
Related Guides
ECMF02-4CMX8 Common-Mode Filter with ESD Protection: Selection Guide
Compare ECMF02-4CMX8 vs ECMF02-2AMX6, ECMF04-4HSM10, and other ST ECMF filters. Choose the right 4-channel common-mode filter with ESD protection for USB 2.0.
Jun 20, 2026
AD5204 Quad Digital Potentiometer Selection Guide (2026)
How to choose the right AD5204 quad digital potentiometer: compare 10kΩ vs 100kΩ variants, TSSOP vs SOIC packages, and SPI interface options for your design.
Jun 20, 2026
0402 10uF X5R Decoupling Design Guide for Compact Digital Rails
Application note for using CL05A106MP5NUNC-class 0402 10uF X5R MLCCs in compact digital rail decoupling designs.
Jun 19, 2026
How to Choose an 0805 10uF MLCC for Decoupling and Bulk Capacitance
Selection guide for choosing 0805 10uF MLCCs around CL21A106KOQNNNE, covering derating, dielectric, package, and sourcing checks.
Jun 19, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
More from Microchip
PIC16LF88-I/SS
Small Outline Packages
Integrated Circuit
25AA02E48-I/SN
Small Outline Packages
Integrated Circuit
PIC18F1220-I/SO
Small Outline Packages
Integrated Circuit
MIC5319-1.8YD5-TR
SOT23 (5-Pin)
Integrated Circuit
dsPIC33FJ256GP710A-I/PT
Quad Flat Packages
Integrated Circuit
BM70BLES1FC2-0B03AA
Other
Integrated Circuit
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”