Communication interface using one chip microcomputer and motorcar condition display apparatus

摘要

The present invention relates to a communication interface using a one-chip microcomputer and an automobile state display device having the integrated device, the communication interface comprising: an ECU connector for connecting an electronic control unit (ECU) and a communication interface; A first voltage level, one end of which is connected to the ECU connector and the other end of which is connected to a communication speed converter, for converting a voltage level of a communication protocol used in the electronic control unit (ECU) into a voltage level used in the communication speed converter; A conversion unit; One end is connected to the first voltage level converter and the other end is connected to the second voltage level converter to convert a communication speed of a communication protocol used in the electronic control unit (ECU) into a communication speed of general computer serial communication. A communication speed converter; A second voltage level converter connected at one end to the communication speed converter and at the other end to a terminal connector to convert a voltage level used in the communication speed converter to a voltage level of general computer serial communication; And a terminal connector connected to the second voltage level converter and configured to connect a communication interface with a computer.;Car Fault Check, Communication Interface, RS232, Communication Protocol, Microcomputer