Provided herein may be an electronic device, a memory system having the electronic device, and an operating method thereof. The electronic device may include a voltage manager configured to determine whether a voltage abnormality occurs by monitoring a voltage to be supplied to a target device, and an operation manager configured to perform an operation control of the target device, and re-perform, when the voltage manager determines that the voltage abnormality has occurred, the operation control being performed at a time of the occurrence of the voltage abnormality.