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Study of Instruction-level Current Consumption Modeling and Optimization for Low Power Microcontroller  

Eom Heung-Sik (Department of Electronics Engineering, Dongguk University)
Kim Keon-Wook (Department of Electronics Engineering, Dongguk University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea CI / v.43, no.5, 2006 , pp. 1-7 More about this Journal
Abstract
This paper presents experimental instruction-level current consumption model for low power microcontroller ATmega128. The accessibility of instruction for internal memory decides power consumption of the microcontroller as much as 17% of difference between access instruction and non-access instruction. The power consumption for the given program will be increased in the proportional to the ratio of memory access instruction and lower level memory access in the hierarchy. Throughout the current consumption model, the power consumption can be predicted and optimized in the direction of reducing the frequency memory access. Also, the various optimization methods are introduced in terms of software and hardware viewpoints.
Keywords
Microcontroller; Instruction-level current consumption; Power optimization;
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