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芯片msp430F5659的RTC_B的掉电保持功能

Other Parts Discussed in Thread: MSP430F5659

您好

因为需求需要,想实现msp430F5659再VCC掉电情况下的RTC时间保持功能。

问题①请问以下连接可行么,DVCC3 = 3.3V,VBAT = 2.7V。

       ②掉电前和掉电后每次读取是否需要加上这段代码

              while(BAKCTL & LOCKBAK)

              BAKCTL &= ~(LOCKBAK);

      ③是否需要掉电前必需设置为PM3.5模式,DVCC3恢复后系统就reset了吧。

谢谢