| 摘要 |
PURPOSE:To simplify the constitution of a power circuit by shortening the power failure interruption processing time of an information processor in case of power failure occurrence. CONSTITUTION:This device is provided with the power circuit 7 which supplies driving electric power to a main processor 12 executing various information processes, a timer circuit 5 which clocks correct time even if a power failure occurs to the power circuit, and 1st and 2nd nonvolatile memories 13a and 13b which hold storage contents even in case of the power failure. Then the processing operation of the main processor is diagnosed at each period, the diagnosis result is written in a 1st nonvolatile memory 13a in time series together with the diagnosis time read out of the timer circuit, and the time of the timer circuit is written as the latest time in a 2nd nonvolatile memory 13b each time a unit time is elapsed. Further, the latest time stored in the 2nd nonvolatile memory 13b is written as power failure occurrence time in the 1st nonvolatile memory 13a in time series in response to power recovery. |
