Abstract: A system-on-chip (SoC) comprises a clock management unit (CMU) including a first clock generator and a second clock generator, the first and second clock generators being configured to generate clock signals. The SoC comprises at least one logic block configured to request the clock signals from the CMU according to a full handshake method and receive the clock signals from the CMU in response to the request. The first clock generator and the second clock generator are configured to communicate according to the full handshake method.

Abstract: Methods of operating a system on chip including a first power domain and a second power domain are provided. The method includes measuring at least one of a voltage and a current, which are applied to the first power domain in analog mode to obtain a measurement result; calculating a first power consumed in the first power domain based on the measurement result; calculating a second power consumed in the second power domain in digital mode based on an activity of the second power domain; and controlling a total power of the system on chip based on the first power and the second power. At least one of the measuring, calculating a first power, calculating a second power and controlling are performed by at least one processor.