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Self-Controlled High-Performance Precharge-Free Content-Addressable Memory | IEEE Journals & Magazine | IEEE Xplore

Self-Controlled High-Performance Precharge-Free Content-Addressable Memory


Abstract:

Content-addressable memory (CAM) is a hardware searchengine used for parallel lookup that assures high-speed match but at the cost of higher power consumption. Both low p...Show More

Abstract:

Content-addressable memory (CAM) is a hardware searchengine used for parallel lookup that assures high-speed match but at the cost of higher power consumption. Both low power NAND-type and highspeed NOR-type match-line (ML) schemes suffer from requirement of the precharge prior to the search. Recently, a precharge-free ML structure has been proposed but with inadequate search performance. In this brief, a self-controlled precharge-free CAM (SCPF-CAM) structure is proposed for high-speed applications. The proposed architecture is useful in applications where search time is very crucial to design larger word lengths. The proposed 128×32-bit SCPF-CAM structure has been implemented using predictive 45-nm CMOS process and simulated in SPECTRE at the supply voltage of 1 V. The ML delay using the proposed SCPF-CAM architecture has been reduced by 88% and 73% compared to the precharge-free and traditional NAND-type ML structure.
Page(s): 2388 - 2392
Date of Publication: 05 April 2017

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