Flash memory system
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United States of America Patent
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Nov 2, 2004
Grant Date -
N/A
app pub date -
Sep 6, 2000
filing date -
Jan 22, 1998
priority date (Note) -
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Abstract
A memory system (10) comprising a non-volatile memory (18) having memory locations (38), and a controller (16) for writing data structures to and reading data structures from the memory. The system (10) is architecturally configured so that the locations (38) can be written to individually but are erasable only in blocks. The controller (16) forms one or more erasable units (39) which are each subdivided into cells (50) each consisting of a group of locations (38). The controller (16) writes data structures to and reads structures from each cell (50) on a per cell basis. The system (10) may comprise a controller (16) embedded in a FLASH memory card. Alternatively, the controller (16) may be embedded in, or implemented in, a host system such as a Personal Computer (PC).
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