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如何使用MSP430F6779的AUXVCC1、AUXVCC2

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各位大神,MSP430F6779的电源有DVCC/AVCC、AUXVCC1、AUXVCC2、AUXVCC3,通过datasheet知道DVCC/AVCC、AUXVCC3的作用,如对AUXVCC3的描述为The backup subsystem usually contains a real-time clock (RTC) module with a 32-kHz crystal oscillator, backup RAM, and optionally(device-specific) up to two digital I/O pins.

但没有找到关于AUXVCC1、AUXVCC2这样详尽的描述,为什么要用这两级电源?怎么用?请各位大神赐教!


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