Patent ID: 7880535
Filing Date: 2011-02-01
Classification: G06F

Abstract:
1. A semiconductor device comprising: plural elements; a storing unit that stores first relation between first information relying on the plural elements and a power supply voltage supplying power to the plural elements; a monitoring unit that includes at least one of the plural elements and monitors second information relying on the at least one of the plural elements; and a control unit that selects a power supply voltage to be associated with the second information based on the first relation by confronting the first information and the second information, and controls to set the power supply voltage to be associated with the second information, being selected based on the first relation, to the power supply voltage supplying power to the plural elements, wherein the first relation is relation between the first information and the power supply voltage supplying power to the plural elements based on: second relation between the first information and plural element variation values relying on the plural elements; third relation between the power supply voltage supplying power to the plural elements and the plural element variation values relying on the plural elements; and the power supply voltage supplying power to the plural elements in the third relation is based on influence of the plural element variation values to which a weighting value is applied so that a slack value based on timing analysis of a path that includes the at least one of the plural elements coincide with a predetermined value.