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 www.maximintegrated.com/microcontrollers. Applications * Agricultural Equipment * Factory Automation * Gaming Equipment * Heating, Ventilation, and Air Conditioning * Industrial Controls * Medical Equipment * 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 https://elecena.pl/product/22302770/dual-can-high-speed-microprocessor 2022-12-25 https://elecena.pl/product/22302770/dual-can-high-speed-microprocessor 2025-01-22