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.
您好，可以看下是不是SECONDS Register设置问题，在数据表第7.6.2节中：
Oscillator stop. The STOP bit is used to force the oscillator to stop oscillating. STOP is set to 0 on initial application of
power, on all subsequent power cycles STOP remains unchanged. On initial power application STOP can be written to 1
and then written to 0 to force start the oscillator.
试一下：Vcc通电后，STOP位先写入1，然后写入0。
