呃，我用了10k和1u的RC复位，然后我还尝试了一种方法，就是一直按着RST按键上电，几秒钟之后才松开，这时候去测量，5509依然是量不到clkout信号，但是晶振两端是有信号的，12MHz
再次感谢您的指导！
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