一种宽温度范围高精度实时时钟的实现方法

Realization method of wide temperature range high precision real time clock

针对导航接收机P码直接捕获对实时时钟的高精度要求,本文提出了一种宽温区高精度实时时钟芯片实现方法,设计芯片在-40℃到80℃温度区间内守时精度不低于0.3秒/1月,能够解决国内宽温区高精度实时时钟芯片的设计困难问题,保证导航终端设备在较恶略的环境中高精度守时。

In view of the high precision requirement of the direct acquisition of the P code of the navigation receiver to the real time clock, this paper presents a method for the realization of high precision and real time clock chip in a wide temperature range, the design of the chip in the temperature range of -40 degrees to 80 degrees within the accuracy of not less than 0.3 seconds / January, can solve the problem of the design of high precision and real time clock chip in wide temperature range in China, to ensure that the navigation terminal equipment in a relatively high accuracy of the environment of the high accuracy of punctuality.