Reducing power dissipation in a match detection circuit

Details Reducing power dissipation in a match detection circuit Reducing power dissipation in a match detection circuit

2005-03-15

2005-03-15

Elms, Richard (Department: 2824)

Static information storage and retrieval

Associative memories

Ferroelectric cell

C365S203000, C365S205000, C365S204000

Reexamination Certificate

active

06867990

ABSTRACT:
A CAM match detection circuit that maintains established levels of accuracy while greatly reducing the amount of power dissipated is disclosed. Rather than allowing the Matchline 185 voltage to swing between a precharge voltage level of VDD and ground, the Matchline voltage is restricted to swinging between a reduced precharge voltage level (i.e., a voltage level lower than VDD) and ground. Further, a source of a p-type transistor that makes up one transistor in each pair of series connected transistors is coupled to the Matchline thereby further reducing the Matchline swing voltage and the overall power dissipation of the match detection circuit.

REFERENCES:
patent: 6349049 (2002-02-01), Schoy
patent: 20030123269 (2003-07-01), Gillingham et al.

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