METHOD OF CHANGING AN OPERATING FREQUENCY FOR PERFORMING A DYNAMIC VOLTAGE AND FREQUENCY SCALING, SYSTEM ON-CHIP, AND MOBILE DEVICE HAVING THE SAME

摘要

A method of changing an operating frequency for performing dynamic voltage frequency scaling for a central processing unit provided in a system on-chip is provided. When it is determined that the operating frequency of the central processing unit is increased, the operating frequency changing method detects the previous maximum peak load of the central processing unit in the history section of dynamic voltage frequency scaling, and based on the previous maximum peak load of the central processing unit. The calculated increased operating frequency is applied to the central processing unit.