NONVOLATILE MEMORY DEVICE INCLUDING SPARE ARRAY AND BLOCK ERASING METHOD IN THE SAME

摘要

A nonvolatile memory device is provided to improve the reliability of the non-volatile memory device in the erase operation by preventing the NOP increment due to the register of the elimination counter and minimizing the program disturbance. A nonvolatile memory device including spare array and block erasing method is comprised of steps: confirming the address of the block eliminated based on the address and the erase command inputted from host; reading out overhead data already stored in the spare area of the block corresponded to and temporary-saving the red-out data; eliminating the cells of the correspondent block; recording updated data in the spare area(13) after updating the overhead data which is temporarily stored; removing the program disturbance generated in the register stage accomplishment in the main area(11) of the erase block.