Patent ID: 8659316
Filing Date: 2014-02-25
Classification: H03K

Abstract:
1. A power control circuit connected between a power supply voltage and a logic circuit, the power control circuit switching power supplied to the logic circuit, the power control circuit comprising: a plurality of first power gating cells configured to receive an external mode change signal in parallel; at least one second power gating cell connected with one first power gating cell of the plurality of the first power gating cells; a plurality of third power gating cells connected in series with the at least one second power gating cell; and a plurality of fourth power gating cells connected in parallel with a third power gating cell at an end of a serial connection of the plurality of the third power gating cells, wherein the mode change signal is transmitted to the plurality of fourth power gating cells via the one first power gating cell, the at least one second power gating cell and the plurality of third power gating cells, and each of the first through fourth power gating cells switches the power supplied in response to the mode change signal.