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Regarding Battery back-up (VBAT) used in MK70FN1M0VMJ12 for RTC

Question asked by PUSPAM NAYAK on Aug 21, 2014
Latest reply on Sep 1, 2014 by PUSPAM NAYAK

Hi,

 

I want to know do i need external logic circuit (OR circuitry) while switching from VDD to VBAT
(coin cell battery for RTC) and vice versa or

switching will happen internally between VDD to VBAT and VBAT to VDD depending on detection of
supply voltage VDD by internal logic in MK70FN1M0VMJ12

 

Kindly reply at earliest

Thanks and regards,

Puspam N


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