A method for performing a dynamic voltage and frequency scaling operation method by leading application processor and mobile device with the application processor

A method of stirring a dynamic voltage and frequency scaling operation comprises: controlling a clock management unit (CMU) (122) so as to an operating state of a central processing unit (CPU) (126) predicts, and that they are a integrated power management circuit (PMIC) (140) (CIS) providing operating frequency information based on the predicted operating status of the CPU (126), wherein the operating frequency information (CIS) a change in a frequency of operation (OP-FRQ) an application processor (120) Display and controlling the PMIC (140) so as to an operating voltage (OP-VOL) of the application processor (120) based on the provided from the clock management unit (122) operating frequency information (CIS) changes.