Data storage device, memory system, and computing system using nonvolatile memory device
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United States of America Patent
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Feb 19, 2013
Grant Date -
Apr 30, 2009
app pub date -
Oct 22, 2008
filing date -
Oct 25, 2007
priority date (Note) -
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Abstract
Provided is a data storage device including two or more data storage areas including may have two or more (heterogeneous) types of nonvolatile memory cells. At least one of the data storage areas includes a plurality of memory blocks that are sequentially selected, and metadata are stored in the currently selected memory block. The memory blocks can be sequentially used and metadata can be stored in a uniformly-distributed manner throughout the data storage device. Therefore, separate merging and wear-leveling operations are unnecessary. Thus, it is possible to improve the lifetime and writing performance of a data storage device having two or more heterogeneous nonvolatile memories.
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