DALLAS Dallas Semiconductor says its DS80C390 Dual CAN microprocessor is the first 8051 processor to integrate two Controller Area Network bus controllers and to be capable of addressing 4 Mbytes of external data memory and 4 Mbytes of external program memory.
The CAN protocol is a 1-Mbit/second serial standard that lets multiple devices communicate in real-time along a simple bus medium in high-noise environments. Dallas product manager Frank Taylor said markets for the DS80C390 include carmakers, manufacturers of farm, industrial and medical equipment, factory process control, and HVAC and other embedded-control networks.
By integrating two CAN controllers, the DS80C390 can host more devices and provide back-up redundancy.
"We have enhanced the DS80C390's CAN message filtering to allow more efficient communication between devices without burdening the processor," Taylor said. "A 4-Mbyte address space opens up more programming options to engineers for networking more widely varying types of devices."
The DS80C390, in a 64-pin LQFP or 68-pin PLCC, is priced at $7.40 in quantities of 25,000.
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EETInfo No. 619