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MSP430FR6972单片机内部DCO可以关闭吗?

Other Parts Discussed in Thread: MSP430FR6972

MSP430FR6972单片机内部DCO可以关闭吗?最近遇见一个问题:当外部32K晶振停振或者出现异常的时候,单片机会自动切换到内部39K,功耗很大约140μA左右,此时硬串口也无法通讯。