VOLATILE MEMORY DEVICE AND SENSE AMPLIFIEF CONTROL METHOD THEREOF

摘要

A refreshing method of a nonvolatile memory device according to the present invention includes the steps of: detecting the size of interference on a second memory region according to the increase of the number of accesses to a first memory region; outputting a warning signal to the outside of the nonvolatile memory device if the detected size of the interference reaches a critical value; and performing a refresh operation of the second memory region.