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Dual CAN High-Speed Microprocessor

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Status Explanations for product status codes

Part Number Status
DS80C390 Active: In Production. See Ordering Information for details.


The DS80C390 is a fast 8051-compatible microprocessor with dual CAN 2.0B controllers. The redesigned processor core executes 8051 instructions up to 3X faster than the original for the same crystal speed. The DS80C390 supports a maximum crystal speed of 40MHz, resulting in apparent execution speeds of 100MHz (approximately 2.5X). An optional internal frequency multiplier allows the microprocessor to operate at full speed with a reduced crystal frequency, reducing EMI. A hardware math accelerator further increases the speed of 32-bit and 16-bit multiply and divide operations as well as high-speed shift, normalization, and accumulate functions.

The High-Speed Microcontroller User's Guide and the High-Speed Microcontroller User's Guide: DS80C390 Supplement should be used in conjunction with this data sheet. Download both at

Data Sheet

Download this datasheet in PDF formatDownload Rev 4 (PDF, 1.8MB)
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Errata DS80C390 80C390A1.pdf
Errata DS80C390 80C390B1.pdf
Errata DS80C390 80C390B2.pdf
Errata DS80C390 80C390B3.pdf
Errata DS80C390 80C390B4.pdf
Errata DS80C390 80C390C3.pdf

Key Features

  • 80C52 Compatible
  • High-Speed Architecture
  • 4kB Internal SRAM Usable as Program/Data/Stack Memory
  • Enhanced Memory Architecture
  • Two Full-Function CAN 2.0B Controllers
  • Two Full-Duplex Hardware Serial Ports
  • Programmable IrDA Clock
  • High Integration Controller
  • 16 Interrupt Sources with Six External
  • Available in 64-Pin LQFP, 68-Pin PLCC


  • Agricultural Equipment
  • Automotive
  • Factory Automation
  • Gaming Equipment
  • Heating, Ventilation, and Air Conditioning
  • Industrial Controls
  • Medical Equipment

Key Specifications:

Part Number MCU Core Core Clock Speed
Data Processing Internal SRAM
USARTs Timer Features Budgetary
max See Notes
DS80C390  8051 (CISC) 40 8-bit 4 2 Watchdog $15.08 @1k
See All Microcontrollers (44)

Pricing Notes:

This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


DS80C390: Pin Configuration
Pin Configuration

More Information

New Product Press Release   2001-05-01 ]
Microcontroller Tool Kit Development Software

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Information Index

Rev 4; 2005-11-14
This page last modified: 2011-12-07