CIRCUIT TO GUARANTEE OPERATING PLL OF CENTRAL PROCESSING UNIT

摘要

PURPOSE: A circuit for compensating the PLL operation of a CPU is provided to stably control the operation of a system and to prevent the interruption of a CPU by normally completing the PLL operation. CONSTITUTION: A reset signal generator(200) generates a reset signal. A CPU(210) embeds a PLL(Phase Lock Loop)(212) and is operated according to a clock signal. If there is the reset signal, the CPU stops the operation of PLL and generates the system reset signal. If the reset signal is released, the CPU operates the PLL and generates a reset interrupt signal.