Title: 0.339fJ/bit/search Energy-Efficient TCAM Macro Design in 40nm LP CMOS
Authors: Huang, Po-Tsang
Lai, Shu-Lin
Chuang, Ching-Te
Hwang, Wei
Huang, Jason
Hu, Angelo
Kan, Paul
Jia, Michael
Lv, Kimi
Zhang, Bright
Department of Electrical and Computer Engineering
Keywords: Embedded memory;energy-efficient;TCAM
Issue Date: 2014
Abstract: In this paper, a 256x40 energy-efficient ternary content addressable memory (TCAM) macro is designed and implemented in 40nm low power (LP) CMOS. Due to the thicker gate oxide in LP process, a 16T TCAM cell with p-type comparison circuits is proposed to increase the I-on/I-off difference of the dynamic circuitry. To further improve energy efficiency, don\'t-care-based ripple search-lines/bit-lines are used to reduce both the switching activities and wire capacitance. Moreover, column-based data-aware power control is employed for leakage power reduction and write-ability improvements. The experimental results show a leakage power reduction of 28.9%, a search-line power reduction of 31.74% and an energy efficiency metric of the TCAM macro of 0.339 fJ/bit/search.
URI: http://hdl.handle.net/11536/135866
ISBN: 978-1-4799-4089-9
Begin Page: 129
End Page: 132
Appears in Collections:Conferences Paper