Content addressable memory

Details Content addressable memory Content addressable memory

1997-09-04

1999-01-12

Nguyen, Viet Q.

Static information storage and retrieval

Associative memories

Ferroelectric cell

36518905, 365203, 36518907, G11C 1300

Patent

active

058597913

ABSTRACT:
The implementation of two-dimensional decoding, necessary to achieve a reasonable array aspect ratio for a large content addressable memory, is achieved by having multiple match lines per physical row, these match lines being physically routed on top of the array core cell in an upper metal layer. To limit power dissipation in the resulting large-capacity content addressable memory, the match function is implemented by two or more NAND chains per word. Means for achieving the precharging and evaluation of these chains, and for implementing dummy chains for the provision of timing information, are also disclosed.

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patent: 5345411 (1994-09-01), Yoneda
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patent: 5455784 (1995-10-01), Yamada
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patent: 5495382 (1996-02-01), Albon
patent: 5617348 (1997-04-01), Maguire
patent: 5642322 (1997-06-01), Yoneda

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