Semiconductor device

Abstract

To reduce power consumption of a semiconductor device, the semiconductor device is configured to include: a power supplier for outputting multiple different voltages; a power controller for outputting a control signal to cause the power supplier to output one of the multiple voltages; a voltage controlling target block for outputting an error detection signal indicating an operation state, in accordance with the multiple voltages; and an error detector for monitoring the operation of the voltage controlling target block. The error detector determines, based on the error detection signal, whether the operation of the voltage controlling target block is normal, and informs the power controller of the obtained determination result. Further, based on a voltage indicated by a control signal and on the determination result from the error detector, the power controller determines a voltage controlling target block voltage to be supplied to the voltage controlling target block.

Dependencies are inferred from the claim text.