据说F5438 的RTC 在按键复位后失效 不知是否属实?
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补充一点,MSP430F5438现在已经不推荐使用了,而建议使用它的更新型号MSP430F5438A。两颗芯片在一些方面还是有区别的,并有各自的datasheet,请注意区分。