SEMICONDUCTOR INTEGRATED CIRCUITS

A cascaded charge-sharing technique for an EDP-efficient match-line design in CAMs

Zhang Jianwei, Ye Yizheng, Liu Binda and Lan Jinbao

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Abstract: A novel cascaded charge-sharing technique is presented in content-addressable memories (CAMs), which not only effectively reduces the match-line (ML) power by using a pre-select circuit, but also realizes a high search speed. Pre-layout simulation results show a 75.9% energy-delay-product (EDP) reduction of the MLs over the tradi-tional precharge-high ML scheme and 41.3% over the segmented ML method. Based on this technique, a test-chip of 64-word×144-bit ternary CAM (TCAM) is implemented using a 0.18-μm 1.8-V CMOS process, achieving an 1.0 ns search delay and 4.81 fJ/bit/search for the MLs.

Key words: content-addressable memory energy-delay-product cascaded charge-sharing

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    Received: 18 August 2015 Revised: 19 February 2009 Online: Published: 01 June 2009

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      Zhang Jianwei, Ye Yizheng, Liu Binda, Lan Jinbao. A cascaded charge-sharing technique for an EDP-efficient match-line design in CAMs[J]. Journal of Semiconductors, 2009, 30(6): 065009. doi: 10.1088/1674-4926/30/6/065009 Zhang J W, Ye Y Z, Liu B D, Lan J B. A cascaded charge-sharing technique for an EDP-efficient match-line design in CAMs[J]. J. Semicond., 2009, 30(6): 065009. doi: 10.1088/1674-4926/30/6/065009.Export: BibTex EndNote
      Citation:
      Zhang Jianwei, Ye Yizheng, Liu Binda, Lan Jinbao. A cascaded charge-sharing technique for an EDP-efficient match-line design in CAMs[J]. Journal of Semiconductors, 2009, 30(6): 065009. doi: 10.1088/1674-4926/30/6/065009

      Zhang J W, Ye Y Z, Liu B D, Lan J B. A cascaded charge-sharing technique for an EDP-efficient match-line design in CAMs[J]. J. Semicond., 2009, 30(6): 065009. doi: 10.1088/1674-4926/30/6/065009.
      Export: BibTex EndNote

      A cascaded charge-sharing technique for an EDP-efficient match-line design in CAMs

      doi: 10.1088/1674-4926/30/6/065009
      • Received Date: 2015-08-18
      • Accepted Date: 2008-11-20
      • Revised Date: 2009-02-19
      • Published Date: 2009-07-13

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