RTC Clock in S32K144 EVB

[vinaykl]

Hello Team,

           I have S32K144 EVB in that I want t perform VLPS mode using RTC clock.

We are giving Extern RTC CLOCK Input source of 32768 Khz. But we are unable to change the clock source and we are unable to enter VLPS mode. Will you please let me know the procedures I need to follow to get into the VLPS mode using external RTC clock

Thanks

Vinay

[VaneB]

Hi @vinaykl 

Please correct me if my understanding is wrong. You are trying to configure an external RTC as a system clock in VLPS mode. 

Unfortunately, this is not possible when entering VLPR/VLPS mode the system clock should be SIRC.

Please refer to sections 5.5 (STOP and VLPS mode entry sequence) and 5.5.2 (VLPS mode entry) of the application note Power Management for S32K1xx and section 27.4.4 (VLPR/VLPS mode entry) of the S32K1xx Series Reference Manual, Rev. 13.

B.R.

VaneB

[vinaykl]

Thanks for the reply.

But when I implement these snippets in my project it is giving errors. 

Is there any other options like API to build the applications with the flow of codes. What to use first and what are all the steps to enter into VLPS mode. Please le me know 

Thank you