Self-timed charge recycling search-line drivers in content-addressable memories

Jian Wei Zhang, Yi Zheng Ye, Bin Da Liu, Feng Guan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

This paper proposes a novel scheme of self-timed charge recycling search-line (SL) drivers for content-addressable memories. In the conventional charge recycling SL driving scheme [11], an additional clock needs to be generated from the system clock with stringent requirements for phase and pulse width to control the charge sharing course. In contrast, the proposed scheme can self-sense the end of the charge sharing. Besides, by entering the high-resistant driving state in advance, the proposed scheme reduces the delay overhead of the control logic from 8 to 6 gates delay. Simulation is carried out in a 0.35-μm 3.3-V CMOS process, and the results show the proposed SL driver with load of 512 bits TCAM cells achieves 31.6 fJ/bit/search energy index and 1.19 ns delay time. The achievement illustrates 27.4% energy reduction over buffered driver and 22.2% delay time reduction over the conventional charge recycling SL driver.

Original languageEnglish
Title of host publication2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009
Pages3070-3073
Number of pages4
DOIs
Publication statusPublished - 2009 Oct 26
Event2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009 - Taipei, Taiwan
Duration: 2009 May 242009 May 27

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
ISSN (Print)0271-4310

Other

Other2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009
CountryTaiwan
CityTaipei
Period09-05-2409-05-27

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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  • Cite this

    Zhang, J. W., Ye, Y. Z., Liu, B. D., & Guan, F. (2009). Self-timed charge recycling search-line drivers in content-addressable memories. In 2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009 (pp. 3070-3073). [5118451] (Proceedings - IEEE International Symposium on Circuits and Systems). https://doi.org/10.1109/ISCAS.2009.5118451