[Cryptech Tech] dev-bridge board

[Jacob]

On 12/18/2015 10:58 PM, Fredrik Thulin wrote:

>
> 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.
>

Yes it is possible. From the STM32F429 datasheet:

VBAT = 1.65 to 3.6 V: power supply for RTC, external clock 32 kHz 
oscillator and backup registers (through power switch) when VDD is not 
present.