Content addressable memory (CAM) architecture

Details Content addressable memory (CAM) architecture Content addressable memory (CAM) architecture

2008-05-27

2008-05-27

Ho, Hoai V. (Department: 2827)

Static information storage and retrieval

Associative memories

Ferroelectric cell

C365S063000

Reexamination Certificate

active

07379314

ABSTRACT:
An improved Content Addressable Memory (CAM) architecture and method for operating the same is provided herein. The improved CAM architecture may generally include an array of memory cells arranged into rows and columns, where each row includes a number of memory cells configured for storing one word. In particular, the number of memory cells may be coupled to a plurality of local match lines which, when combined through a hierarchy of two or more logic gates, form a match line signal for the entire word. Dynamic logic is used within a compare portion of each memory cell to reduce the occurrence of functional failures. In addition, the improved method for operating the CAM reduces power consumption and peak current, and improves timing, by eliminating the need to restore the match line voltage to a preset voltage level before each new compare operation.

REFERENCES:
patent: 7187571 (2007-03-01), Lien et al.

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