调试电路板总是重启，找了半天原因，急得是焦头烂额啊，最后发现原来在430的技术文档里有这么一句数字电源和模拟电源的最大偏差为0.3v，修改后，系统正常，希望遇到相同问题的朋友能用此法解决。 原文：It is recommended to power AVCC and DVCC from the same source. A maximum difference of 0.3 V between AVCC and DVCC can be tolerated during power-up.