Dual-CANbus 8051

N/A8OC390 dual-CAN (Controller Area Network) chip is an 8051-type microprocessor with 1 Mbit/second CANbus controllers and peripherals. Capable of addressing 4 Mbytes of external data memory and 4 Mbytes of external program memory, it runs at a crystal speed of 40 MHz, where it offers an apparent execution speed of 120 MHz. A math accelerator with 40-bit accumulator performs 32- and 16-bit multiply, divide, shift, normalization, and accumulation functions in dedicated hardware.

By integrating two CAN controllers, the DS8OC390 enables multiple devices to communicate in realtime in high-noise environments. All error detection/correction, transmission and reception are carried out in hardware. CAN message filtering permits communication between devices without burdening the 8051 core. Filtering includes two separate 8-bit media masks and media arbitration fields. Besides the standard CAN 11-bit identification modes, the DS8OC390 supports extended 29-bit CAN protocols such as DeviceNet and SDS. Price is about $7.40 each/25,000 (at time of publication).

<%=company%>, 4401 South Beltwood Pkwy., Dallas, TX 75244. Phone: 972-371-6085; Fax: 972-371-3715.