The DS80C390-QCR+ is a dual CAN high speed microprocessor in 68 pin PLCC package. It 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 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 microprocessor to operate at full speed with reduced crystal frequency which reduces EMI. The EMI reduction feature allows software to select a reduced electromagnetic interference (EMI) mode by disabling ALE signal when it is not needed. A hardware math accelerator further increases speed of 32bit and 16bit multiply and divide operations as well as high speed shift, normalization and accumulate functions.
Supply voltage range from 3.85V to 5.5V
Operating temperature range from 0°C to 70°C
Supports CAN, UART interface
80C52 compatible device
High speed architecture
4KB internal SRAM usable as program/data/stack memory
Enhanced memory architecture
Two full duplex hardware serial ports
16 interrupt sources with six external
Programmable IrDA clock, high integration controller
