CAM match line precharge

Details CAM match line precharge CAM match line precharge

1998-08-07

2000-08-08

Phan, Trong

Static information storage and retrieval

Associative memories

Ferroelectric cell

365168, 365203, G11C 1500, G11C 700

Patent

active

061011150

ABSTRACT:
The invention provides a method and system for improved CAM match line precharge, in which the amount of power consumed by match line precharge and discharge is significantly reduced. An independent match precharge voltage is introduced to the CAM, which is used to separately precharge the match line and is available for use by comparison circuits to attempt to match the input tag. The match precharge voltage is selected so as to reduce the relative power consumption for match line precharge and discharge by a factor of about five. Optionally, sense amplifiers in the comparison circuits are disposed so as to compare each discharged match line with the match precharge voltage itself.

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