Nonvolatile content addressable memory
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United States of America Patent
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Jul 27, 1999
Issued Date -
N/A
app pub date -
Jul 6, 1998
filing date -
Dec 6, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Binary and multiple-valued nonvolatile content addressable memories (NVCAMs) use ferroelectric capacitors as nonvolatile storage elements. The operation of the NVCAMs is accessed either in serial or in parallel. In a 2-bit NVCAM of a parallel access structure, search operation is performed by a simultaneous access to a 4-level polarization of the ferroelectric capacitor. The total number of search operations is reduced.
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