NXP RTC PCF8563 Technical issue

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NXP RTC PCF8563 Technical issue

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chenhuang
Contributor II

When commissioning PCF8563T, the customer found that VL bit of VL_seconds register of some chips was read as 0 when it was powered on for the first time. Theoretically, it should be 1.

The hardware side of the customer has done the timing test, and confirmed that there is no problem with the IIC timing. The hardware iic is used for communication. Not all chips are like this, and some chips have this phenomenon. Please help

Take a look at how to locate the problem and solve the customer's problem, and give some suggestions or doubts, thank you!

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2 Replies

181 Views
guoweisun
NXP TechSupport
NXP TechSupport

尝试让客户power on以后等600ms再去通信。

 

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180 Views
chenhuang
Contributor II

好的,我这边让客户去尝试验证下,谢谢

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