This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
外接12m晶振，示波器能观察到波形，但是波形很小。请教这是什么原因。
有可能是已经起振，但是当你把示波器探头放到管脚上时，又停振了，需要重新设置示波器探头的倍数。还有可能是
你要分别看看XTAL1, XTAL2,我记得其中一个管脚用示波器是看不到波形的.
匹配电容是多少啊？适当增大匹配电容试试
