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Eric_wang
Level 4
Level 4
25 replies posted 10 replies posted 10 questions asked

①请问20737如果连接了外部32.768k晶振,32.768k晶振是何时开始起振,上电就应该起振还是需要通过后续配置(上电是不是默认开启内部集成的LPO)?

②外部26M晶振是不是上电就默认起振?

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Owen_Zhang123
Moderator
Moderator
Moderator
500 solutions authored 250 sign-ins 1000 replies posted

1. 接了外部晶振之后,需要在application中进行配置,请参考rtc_sample的demo:

rtcConfig.oscillatorFrequencykHz = RTC_REF_CLOCK_SRC_32KHZ;

2. 外部用的是24M晶振,上电默认起振。

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Owen_Zhang123
Moderator
Moderator
Moderator
500 solutions authored 250 sign-ins 1000 replies posted

1. 接了外部晶振之后,需要在application中进行配置,请参考rtc_sample的demo:

rtcConfig.oscillatorFrequencykHz = RTC_REF_CLOCK_SRC_32KHZ;

2. 外部用的是24M晶振,上电默认起振。

好的,非常感谢!

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