基于DS3231高精度时钟接口设计

bstract: In the general circuit systerm, it’s the common phenomenon that the systerm can’t time truly when it’s electrified or out of power ,because they are different from requesting time sequence. But the time chip DS3231 can slove the problem well. DS3231 is the real-time clock chip with a termperature-compensated crystal osillator and a crystal in the world now. It’s suitable for application requring extermly accurate timekeeping. The article introduces the characteristics ,the operation principle of the low power RTC and the pin function of DS3231 and designs the hardware and soft interface. It also offer correlative Electrical schematic diagram and flowchart. This way possesses good practice effect and purport of use for reference. It has good meaning for guiding in the pratical application.