Electronic device controlling frequency of clock signal and method of operating the electronic device

An electronic device comprising:

• a clock management unit configured to generate a first clock signal and a second clock signal;
• a first intellectual property (IP) device configured to receive the first clock signal and is configured to output a task request according to the first clock signal in an active state;
• a second IP device configured to receive the task request from the first IP device according to the second clock signal;
• a first active counter configured to generate a first active count by counting cycles of the first clock signal received by the first IP device while the first IP device is in the active state, and is configured to output a first initiation signal when the first active count reaches a first reference count;
• a first total counter configured to generate a first total count by counting, regardless of the active state of the first IP device, cycles of the first clock signal received by the first IP device, and is configured to output a second initiation signal when the first total count reaches a second reference count;
• and
• a frequency controller configured to control the clock management unit to change a frequency of the second clock signal, in response to the first initiation signal or the second initiation signal.

A method of operating an electronic device, the method comprising:

• setting, to initial values, an active count corresponding to a number of active cycles of a clock signal provided to an intellectual property (IP) device and a total count corresponding to a number of total cycles of the clock signal;
• counting the active cycles and the total cycles of the clock signal;
• and
• changing a frequency of the clock signal based on whether the active count reaches a first reference count or whether the total count reaches a second reference count.