ELECTRONIC CONTROL DEVICE FOR AUTOMOBILE AND DATA COMMUNICATION METHOD

摘要

PROBLEM TO BE SOLVED: To shorten a time required for transferring write data in an electronic control device for an automobile.

SOLUTION: When data to be written in a ROM 110 on an ECU 100 is transferred from a writing tool 200 to the ECU 100, the ECU 100 performs communication using not only a communication buffer used in order for the ECU 100 to communicate with the writing tool 200 in an on-board state but also a communication buffer used for communicating with a device other than the writing tool 200 in the on-board state in a communication buffer of a communication buffer region 141.

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