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Dynamic Current Modeling at the Instruction Level

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3 Author(s)
Jose Rizo-Morente ; UCD School of Computer, Science and Informatics, Belfield Campus, Dublin, Ireland. ; Miguel Casas-Sanchez ; C. J. Bleakley

Estimation of processor current consumption is important for the design of low power systems. This paper proposes a novel method for estimating the dynamic current consumption of a processor. The method models dynamic current as the output of a linear system excited by a signal comprised of the total current due to each instruction. System identification is performed by cross-correlation of a pseudo-random stimulus with the measured current. The method was applied to the Texas Instruments TMS320VC5510 DSP and was found to provide an average correlation of 93% between estimated and measured dynamic current across a range of benchmarks

Published in:

ISLPED'06 Proceedings of the 2006 International Symposium on Low Power Electronics and Design

Date of Conference:

4-6 Oct. 2006