| 摘要 |
An apparatus and method are provided that disassociates the power consumed by a processing device from the instructions that are executing, on a clock-by-clock basis. The apparatus includes a power predictor that predicts the power that will be consumed by the processing device during execution of particular instructions, and a power counterweight, that adds a counterweight current to the total power consumption of the processing device. By predicting the power that will be consumed during execution, and by adding a counterweight current during instruction execution, the total power consumed is made invariant. In another aspect, a random counterweight generator produces a random counterweight current which is added to the power consumed during instruction execution to disassociate the power consumed from the instructions being executed.
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