Design and Realization of USB-CAN Communication System Based on AT89C52

Since most of computer systems have no CAN bus interface, we can’t directly get the data from CAN equipment of the industrial field. In order to solve the problem of high speed and reliable communication between CAN and compute, a kind of CAN-USB communication system based on AT89C52 is designed. Using FT245BM and SJAl000 as interface chip of USB and CAN bus, the USB interface circuit and CAN interface circuit is designed in detail, in addition, the software of the system was given too. This system can perfectly fulfill the requirement of reliable communication between PC and CAN bus, it has the characteristics of simple structure, flexibility, reliable communication as well as the strong anti-jamming ability, which will be widely used in the future for its high efficiency and low cost