Hi , How does using VBAT pin as back up for RTC in STM32F407 helps even when there is internal one to maintain the RTC and it's registers ?
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2018-06-27 12:32 AM
Posted on June 27, 2018 at 09:32
I couldn't understand why external back up pin VBat is kept ? Is it necessary to add a ext. backup battery
#stm32f407 #stm32f4xx #rtc-backup
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RTC
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STM32F4 Series
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2018-06-27 1:58 AM
Posted on June 27, 2018 at 10:58
Hello,
I suggest you check Hardware getting started application note for STM32F4xx.
Best regards,
Tilen
