CONTROL METHOD OF NONVOLITILE MEMORY DEVICE

摘要

PURPOSE: A method for controlling a nonvolatile memory device is provided to improve the lifetime and performance of a memory device by referring to a wearing degree of a memory cell. CONSTITUTION: Memory cells to detect a wearing index are programmed(S810). Threshold voltages of the programmed memory cells are read(S820). A high read voltage corresponds to a high wearing index. The wearing index of the memory cells is detected(S830). A nonvolatile memory device is managed by referring to the wearing index(S840).