2020-09-28 04:05 PM
Thank you for helping.
How do I back up the registers when the power is turned off without the VBAT pin?
Thank you.
2020-10-05 12:11 AM
clive1
Thank you for your reply.
There was an answer in the following article.
" RTC backup registers after power off and on "
The backup register for devices without a VBAT pin doesn't seem to make sense.
2020-10-05 01:59 AM
There are ST supply schematics for STM32L parts that cope with the missing VBAT pin. Look deeper.
2020-10-05 05:43 AM
Yes you keep going to that, but when the primary supply is the battery it doesn't make sense to have a second pin.
