In a configuration having a nonvolatile memory and a volatile memory, when storage information of the nonvolatile memory is changed and an abnormal operation occurs due to temporary blackout, α-ray or others, the abnormal operation is recovered to a normal operation regardless of the presence of the detection of the abnormal operation. A reset to be inputted to the nonvolatile memory is collectively transmitted for each 1 bit, each 1 word or each predetermined arbitrary bit, and the collectively transmitted reset serving as one unit is periodically transmitted, so that the abnormal operation is recovered to a normal operation without input signals from outside even if the storage information of the nonvolatile memory is changed due to temporary blackout, α-ray or others.