| 摘要 |
PROBLEM TO BE SOLVED: To handle any defective block while reducing an unnecessary alternative region in the memory management method of a NAND memory. SOLUTION: The plurality of blocks of a non-volatile memory are assigned to a management region, a program region, and an alternative region and an interference region. As management information in the management region, at least the association information between the block of the alternative region and the defective block of the alternation destination is stored. In using the defective block, the block of the alternative region is used instead of the defective block based on the association information in using the defective block. Thus, it is possible to check the number of initial defective blocks, and to determine the number of blocks of the alternative region configured of a plurality of blocks which are alternative to those defective blocks according to the number of initial defective blocks. COPYRIGHT: (C)2009,JPO&INPIT
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