METHOD FOR MANAGING ADDRESS MAPPING TABLE AND A MEMORY DEVICE USING THE METHOD

摘要

PURPOSE: An address mapping table management method and a memory device thereof are provided to extend the lifetime of the memory device and improve the performance by managing an address mapping table to reduce the elimination frequency of the memory device. CONSTITUTION: The first memory cell array(10) stores data. A wear-leveling controller(40) manages a ware-level. The second memory cell array(60) stores an address mapping table. If a conversion physical address mapped in a physical address of the first memory cell array is changed, a memory control unit(30) stores the movement quantity of an address which has to be moved based on the conversion physical address prior to the change in the address mapping table. The memory control unit maps the physical address to the changed conversion physical address with reference to the address mapping table.