On Friday, December 18, 2015 10:45:01 PM Jacob wrote: > I am trying to avoid stepping again into the minefield, but I will not > have a peaceful evening unless I know the reason why you have an > external RTC in lieu of using the one provided by the STM CPU.
No minefield there that I am aware of =). I don't recall any specific discussions about the RTC, but I think we wanted it battery powered (naturally, sort of). I have the feeling that might be possible with the RTC in the STM32 too, in which case I believe there are no real reason to have a separate one. Maybe we put the RTC in the block diagram before we knew what MCU we would use... maybe somone had a conscious idea to have a separate chip, but in that case I don't remember the arguments. /Fredrik
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