Dear Support,
I hope everything goes well for you.
We have been working on the imx8 mini using a Verdin development board…
As we are in the process of designing our PCB, I was wondering if VCC_BACKUP is necessary since I found that it is only necessary for RTC. Otherwise, if we have to use it for other purposes, I would like to know why. Thanks for taking your time and support.
Best regards,
Mehrdad
Hi @Mehrdad, how are you?
You can see from the Verdin Carrier Board Design Guide extracts like the following:
The 5V from the USB is directly connected to the VCC input voltage of the module. No further buck regulator is needed. The module starts automatically when the VCC is applied. The VCC_BACKUP is not required for running the module. However, without a coin cell battery on VCC_BACKUP, the real-time clock is only running if the VCC rail is available.
Therefore, you wouldn’t need the VCC_BACKUP to run the module but it’s highly desirable to have it if you want to use the RTC functionalities all the time.
Please tell us if this helps.
Best regards,
Hi @Mehrdad,
Glad to hear it helped 
! It’s always a pleasure to support our customers. Can we tag this post as solved?
Best regards,
Hi @gclaudino.tx ,
Yes, we can, and thanks a million for your support, I really appreciate it.
Best regards,
Mehrdad
