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芯片内部RTC与外部RTC有什么区别?如何选型?
现在很多MCU内部都集成了内部RTC,但常见的设计中,为什么很多使用独立的RTC芯片?进行RTC设计选型的依据是什么?又该如何选择? 今天,我们重点介绍一下在进行设计时,应该如何选择RTC功能的实现? 真的要回答这个问题,至少涉及到准确性(RTC精度 ...
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