Electronic devices and operation methods of the same

An operation method of an electronic device, the operation method comprising:

• determining an operation status of a processor circuit of the electronic device;
• and
• directly communicating, based on using the processor circuit, a clock control request associated with a clock signal to a clock management circuit configured to control the clock signal according to the operation status of the processor circuit
• wherein the clock control request includes a clock disable request and a clock enable request, and
• wherein the clock management circuit is further configured to:
• even when the clock disable request is received at the clock management circuit, maintain an enabled status of a clock signal input to the processor circuit without disabling the clock signal, based on a determination that a time interval between reception of the clock disable request at the clock management circuit and immediately preceding enabling of the clock signal is less than or equal to a particular threshold time.

An electronic device comprising:

• a first processor circuit and a second processor circuit configured to support hardware cache coherence;
• and
• a clock management circuit configured to control both a clock signal of the first processor circuit and a clock signal of the second processor circuit,
• wherein the second processor circuit is configured to communicate a clock enable request to the clock management circuit based on a determination that the second processor circuit has received a cache coherence signal from the first processor circuit, and
• the clock management circuit is configured to enable the second processor circuit in response to the clock enable request.