| 摘要 |
A memory system for performing a group mapping operation and an address mapping method thereof are provided to reduce page copy and block erase operation, and increase page usage of a log block by using an FTL(Flash Transformation Layer) for managing address mapping between a file system and a flash memory, which includes a plurality of data and log blocks. A memory system includes a file system(510), a flash memory(530) including a plurality of data and log blocks(531,532), and an FTL(520) managing address mapping between the file system and the flash memory. The FTL manages the predetermined number of data blocks as one data block group, manages at least one log block as one log block group, and assigns each log block included in the log block group to each data block included in the data block group. The FTL includes a data block mapping table(521) for mapping the data blocks, a group mapping table(522) for mapping the groups, and a page mapping table(523) for mapping pages.
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