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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
您好:
谢谢您的回答。
麻烦再问您一下。因为我这XT1接了一个32K晶振。
1.掉电后RCT功能保持,如果中断没有关,还会发生中断么。如果发生那代码是以XT1的时钟频率运行么。
2.掉电后RCT功能保持,耗电是多少呢。
谢谢
你可以看一下users guide 23.2.6 Real-Time Clock Operation in LPM3.5 Low-Power Mode章节,
Also the configuration of the interrupts is stored so that the configured interrupts can cause a wakeup upon exit from LPM3.5.