| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic control device capable of precisely writing data in a backup memory while suppressing a processing load of a CPU. SOLUTION: An SRAM 24 holds data while an ignition switch 40 is turned off. A CPU 21 not only periodically writes data in the SRAM 24, but also writes data when voltage is dropped, and takes in the data memorized in the SRAM 24 to execute injection/ignition control of an engine. The written data into the SRAM 24 are divided into plural parts. The CPU 21 writes data by a divided unit at a different timing when periodically writing into the SRAM 24, and writes all data to be written when writing at dropping of the voltage. |
