Estimation of average switching activity in combinational and sequential circuits
DAC '92 Proceedings of the 29th ACM/IEEE Design Automation Conference
Digital integrated circuits: a design perspective
Digital integrated circuits: a design perspective
Design and optimization of dual-threshold circuits for low-voltage low-power applications
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Low power synthesis of dual threshold voltage CMOS VLSI circuits
ISLPED '99 Proceedings of the 1999 international symposium on Low power electronics and design
Optimal Assignment of High Threshold Voltage for Synthesizing Dual Threshold CMOS Circuits
VLSID '01 Proceedings of the The 14th International Conference on VLSI Design (VLSID '01)
Synthesis of high performance low power PTL circuits
ASP-DAC '03 Proceedings of the 2003 Asia and South Pacific Design Automation Conference
PATMOS'11 Proceedings of the 21st international conference on Integrated circuit and system design: power and timing modeling, optimization, and simulation
PATMOS'06 Proceedings of the 16th international conference on Integrated Circuit and System Design: power and Timing Modeling, Optimization and Simulation
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In this paper we have addressed the problem of realizing dual-VT CMOS circuits for battery-operated hand held and portable systems. As the battery life is of primary concern, an algorithm is proposed to realize circuits with near minimal energy requirement in the standby mode as well as in the active mode, at the expense of some performance. An efficient algorithm for dual-VT assignment has been developed, which assigns high-VT to larger number of transistors compared to the existing approaches, leading to higher reduction in power. Experiments have been carried out to study the reduction in power requirement with the increase in delay (with corresponding increase in low-VT) compared to the highest performance single-VT realization. Our algorithm has been tested using standard ISCAS benchmark circuits. Experimental results have established that, by compromising small performance (5 to 10% increase in delay), it is possible to realize CMOS circuits using dual-VT technology with near-minimal energy requirement.