Microelectronics Engineering Group

Microelectronics Engineering Group

Electronics Technology, Systems and Automation Engineering Department University of Cantabria
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Title:Energy Consumption Estimation Technique in Embedded Processors with Stable Power Consumption based on Source-Code Operator Energy Figures
Type:International Conference
Where:XXII Conference on Design of Circuits and Integrated Systems, DCIS'07
Authors: Juan Castillo
Héctor Posadas
Eugenio Villar
Marcos Martínez (DS2)
R&D Lines: Design and verification of HW/SW embedded systems
Projects: Medea+ 2A708 LoMoSa+
PDF File:see file
Abstract:Power consumption has become one of the main concerns in embedded system design. Currently, design platforms are composed of generic and specific hardware devices and general-purpose processors running the application software. SW functionality has a mayor impact on the total system power consumption.
Early estimation of the power consumption of the application SW is crucial in order to take the correct design decisions as soon as possible. In this paper we exploit the ‘almost’ constant relationship between machine instructions executed per second and the corresponding power consumption found in many embedded processors. Based on this property, a technique to estimate the SW power consumption has been developed based on source code simulation. Short
simulation times are achieved with high accuracy, so the technique can be applied at early stages of the design flow. Energy consumption of an ARM9TDMI core when running some typical application codes has been estimated.
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