5. Conclusion and outlook

Hardware techniques to support the implementation of power management in embedded electronic circuits are diverse and locally efficient. To achieve real energy efficiency, a number of issues need to be addressed:

• The organization of a functional architecture according to a power management structure must be thought through in its entirety;

  For example, inserting a multitude of power control mechanisms locally can become counter-productive, as it is then difficult to manage them efficiently at system level.

• The insertion of power management mechanisms affects functional performance and can also lead to logic errors if all precautions are not taken. Functional verification is thus a complex task for a circuit optimized for power consumption;

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