| 摘要 |
PROBLEM TO BE SOLVED: To reduce the time required for rewriting a control program.SOLUTION: An ECU 1 includes CPUs 11, 12, and executes control processing. The ECU 1 includes a flash ROM 13 (hereinafter referred to as ROM 13) allowed to rewrite data stored therein and stores first and second control programs for executing control processing. The CPUs 11, 12 include built-in RAMs 21, 22, respectively. The CPU 11 causes the built-in RAM 21 to store a first rewrite program for rewriting the contents of the first and second control programs stored in the ROM 13. The CPU 11 executes the first rewrite program stored in the built-in RAM 21. The CPU 12 causes the built-in RAM 22 to store a second rewrite program for rewriting the contents of the first and second control programs stored in the ROM 13. The CPU 12 executes the second rewrite program stored in the built-in RAM 22.SELECTED DRAWING: Figure 1 |
