https://community.nxp.com/t5/Other-NXP-Products/NXP-RTC-PCF8563-Technical-issue/m-p/1662367#M17986 <P>好的，我这边让客户去尝试验证下，谢谢</P> Fri, 02 Jun 2023 05:30:21 GMT chenhuang 2023-06-02T05:30:21Z https://community.nxp.com/t5/Other-NXP-Products/NXP-RTC-PCF8563-Technical-issue/m-p/1662357#M17984 <P>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.</P><P>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</P><P>Take a look at how to locate the problem and solve the customer's problem, and give some suggestions or doubts, thank you!</P> Fri, 02 Jun 2023 05:14:09 GMT https://community.nxp.com/t5/Other-NXP-Products/NXP-RTC-PCF8563-Technical-issue/m-p/1662357#M17984 chenhuang 2023-06-02T05:14:09Z https://community.nxp.com/t5/Other-NXP-Products/NXP-RTC-PCF8563-Technical-issue/m-p/1662366#M17985 <P>尝试让客户power on以后等600ms再去通信。</P> <P>&nbsp;</P> Fri, 02 Jun 2023 05:28:43 GMT https://community.nxp.com/t5/Other-NXP-Products/NXP-RTC-PCF8563-Technical-issue/m-p/1662366#M17985 guoweisun 2023-06-02T05:28:43Z https://community.nxp.com/t5/Other-NXP-Products/NXP-RTC-PCF8563-Technical-issue/m-p/1662367#M17986 <P>好的，我这边让客户去尝试验证下，谢谢</P> Fri, 02 Jun 2023 05:30:21 GMT https://community.nxp.com/t5/Other-NXP-Products/NXP-RTC-PCF8563-Technical-issue/m-p/1662367#M17986 chenhuang 2023-06-02T05:30:21Z