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PSoC 5, 3 & 1 MCU

DaHu_285096
Contributor II

 Is there a Bat pin that can be sued to supply power just to keep the RTC running when main power to the application is removed?

   

I notice a VBAT used with the Boost circuit but not sure if this is relevant.

   

I would assume there must be provision for this because it would seem wasteful to use an external RTC when one is on board.

   

I have lookied through some forums and will do some searches in the meantime.

   

Thanks

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2 Replies
JoMe_264151
Expert II

No need to ask twice  answer stays the same.

   

RTC does not run at power down and cannot be buffered. Use external RTC.

   

 

   

Bob

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ETRO_SSN583
Esteemed Contributor

You can use RTC as wakeup in sleep mode -

   

 

   

    

   

          

   

http://www.cypress.com/?app=forum&id=2232&rID=89607

   

 

   

http://www.cypress.com/?rID=64554

   

 

   

 

   

Regards, Dana.

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