The IC Design Of Automobile Electronic Control Unit (ECU) Based On CAN Bus

With the popularization and widely using of automobile, the automobile manufacturing is developing quickly in our country; the automobile electronics has occupied very important position in the field of the automobile manufacturing. Electronic Control Unit (ECU) is the core component in automobile electronics; it acts a part in some aspects such as the engine, bodywork, chassis controlling systems and the communication function.At present, most of the ECU is designs using singlechip with peripheral circuit, it has some defects such as low integration rate, bulky, bad dependability; most of ECU chip depends on import, it is so costliness that only suit to use on top grade cars.The thesis discusses the automobile ECU including the CAN bus, according as the design demand, it puts forward the design scheme, adopts the pipeline technique, designs and reduces the standard 8051 MCU core, not only cuts down the area but also increases the processing speed. According Top-Down designing principle, designs the units such as ALU, central controller, timer/counter, the serial port and the standard CAN bus unit based on 2.0A.In order to insure the correctness, the thesis designs test files respectively bases on the characteristic of each unit, designs the guiding program, realizes the automatic loader function in the FPGA verification procedure.This design realizes to control the lows speed equipment such as bodywork chassis and so on, obtains CAN bus communication function, it has some advantages such as easing to use, fast processing speed, high integration, good dependability and the low price etc, has a good prospect of application.