MEMORY SYSTEM AND DATA PROTECTING METHOD THEREOF

摘要

According to an embodiment of the present invention, a memory system comprises: an abnormality detection block which includes a plurality of abnormality detectors, and detects whether abnormality occurs due to an external attack with respect to a normal operation; an abnormality processing block for processing the detected abnormality by hardware; a central processing unit for executing a first code program which detects whether abnormality occurs with respect to the normal operation and a second code program which processes the detected abnormality by software; and a monitoring device which monitors the operation of the second code program, and determines whether malfunction occurs in the second code program based on the monitoring results. The present invention is to ensure the safety of a security device by protecting data from an external attack.