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A low-power CAM using pulsed NAND-NOR match-line and charge-recycling search-line driver

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2 Author(s)
Byung-Do Yang ; Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea ; Lee-Sup Kim

This paper proposes a low-power CAM using pulsed NAND-NOR match-line and charge-recycling search-line. The pulsed NAND-NOR match-line not only significantly reduces the match-line power by activating only a few match-lines by using NAND cells for several bits but also achieves high speed by using NOR cells for most bits. The charge-recycling search-line driver reduces the search-line power by recycling the charge of search-lines without precharging. The CAM chip with 128×32 bit is fabricated in a 0.25-μm CMOS process with 2.5 V. It dissipates 17.2 fJ/bit/search. It consumes 31% power of the dynamic NOR-type CAM.

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:40 ,  Issue: 8 )

Date of Publication:

Aug. 2005

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