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TI的工程师们，
我调试的时候会遇到RTC Lost Power Status Register (RTCNOPWR) 中PWRUP 置位； 手册说需要软件重启；
问题是，我刚开始配置好RTC后，在使用中PWRUP 置位，这时RTC中断不能触发；什么情况会导致PWRUP 置位？
程序中用到watch dog了吗？如果用的话，先disable掉试试。
没有使用
整个程序没有配置看门狗。同样程序运行不是每次都出现这问题，而是偶尔会出现。
看一下DSP的供电电压，特别是CVDDRTC电压是否稳定干净，在手册电气特性范围内。
The CVDDRTC must always be powered by an external power source even though RTC is not used. CVDDRTC cannot be powered by any of the on-chip LDOs.
