NONVOLATILE MEMORY DEVICE COMPRISING FLAG CELL AND USER DEVICE COMPRISING THE SAME

摘要

PURPOSE: A nonvolatile memory device with flag cells and a user device including the same are provided to effectively prevent a threshold voltage of a flag cell from unexpectedly increasing or decreasing, thereby preventing a read error at the nonvolatile memory device. CONSTITUTION: A nonvolatile memory device comprises a flag cell to store flag information; a plurality of dummy cells adjacent to the flag cell; program control logic (140) to control a program operation of the flag cell and a dummy program operation of the plurality of dummy cells. When the program operation of the flag cell is performed, the program control logic performs the dummy program operation of at least one of the plurality of dummy cells.