| 摘要 |
PROBLEM TO BE SOLVED: To provide an on-vehicle electronic equipment control system for properly executing the reset of a CPU even when battery voltage lowers at starting an engine. SOLUTION: The control system 1 for on-vehicle electronic equipment 150 executes the reset of the CPU 101 while detecting the edge of input voltage Vrst to a reset terminal 101a of the CPU 101 when falling below a reset voltage threshold value Vs down to a low voltage value. The reset voltage threshold value Vs is set as a first threshold voltage Vs1 during an engine starting period Ts and as a second threshold voltage Vs2 higher than the first threshold voltage Vs1 during a normal period Tn. COPYRIGHT: (C)2008,JPO&INPIT
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