首页>
外国专利>
Clock control circuit and clock control method that switchingly supplies a high-speed clock and a low-speed clock
Clock control circuit and clock control method that switchingly supplies a high-speed clock and a low-speed clock
展开▼
机译:切换提供高速时钟和低速时钟的时钟控制电路和时钟控制方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
In this clock control circuit and this clock control method, during a standby-mode of a CPU, a low-speed clock is supplied. Processings including timer processing and receiving processing are carried out by low-speed operation at the CPU. When an interrupt signal is inputted to the CPU which is in the standby mode, a high-speed clock source is activated, and counting of the low-speed clock is started at a counter. When a count value of the counter reaches a set value of a register, a high-speed clock is selected by a selection signal. The high-speed clock is supplied to the CPU, and interruption processing is started.
展开▼