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msp430F5255 双电源轨的问题

Other Parts Discussed in Thread: MSP430F5255

你好!

MSP430F5255 datasheet中介绍 (Figure 2 Vcc and Vio power sequence),AVCC和DVIO是需要按照一定的顺序上电的。

请问,在设计中:

1. 需要特别的硬件设计使得CPU的DVIO pin先被供电,然后VCC在被供电吗?

2. 如果是可以提供给我们典型应用电路吗?

3. 如果不是,那是不是CPU内部有这样的开关使得DVIO pin先被供电,然后VCC再被供电呢?