Block status storage unit of flash memory device

A flash memory device includes: a memory cell array including pluralities of blocks; a block status storage unit including pluralities of latch cells arranged in rows and columns to store block status information signals corresponding to each of the blocks and providing the block status information...

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Bibliographic Details
Main Author LEE DOO-SUB
Format Patent
LanguageEnglish
Published 08.09.2009
Subjects
INFORMATION STORAGE
PHYSICS
STATIC STORES
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Summary:A flash memory device includes: a memory cell array including pluralities of blocks; a block status storage unit including pluralities of latch cells arranged in rows and columns to store block status information signals corresponding to each of the blocks and providing the block status information signals in response to each of the write and read addresses; and a controller regulating an access to the memory cell array in response to the block status information signals. The block status storage unit provides information about whether a read address input during a read-while-write operation or suspend read operation is valid, and offers information about whether a current block is a write block or a write protection block.
Bibliography:Application Number: US20060563966