RE: Power on reset on NRF52832

Sahar — Mon, 03 Jun 2019 08:25:17 GMT

Thank you for your answer!

RE: Power on reset on NRF52832

Kenneth — Tue, 21 May 2019 09:24:29 GMT

[quote user=""]what is the valid supply voltage ?[/quote]

1.7 V–3.6 V supply voltage range

[quote user=""]In recommended conditions in 6 on page 20, the supply rise time (from 0 to 1.7 V) must be less than 60 ms, what happens if the rise time is much higher ?[/quote]

It may stay in reset state with no code running.

[quote user=""]So can we say that CPU can start even if the supply voltage rise time is much higher than indicated in the recommended conditions?[/quote]

No, we do not guarantee that the chip will start running in such case (it's outside of electrical specifications).

[quote user=""]How can you explain the current consumption every 4 ms between the first current pic consumption and the begining of measurements every 1 ms (our software)?[/quote]

It may be that it toggle between POR and BOR since it is so close minimum operating conditions. The chip will draw more current consumption when in active mode, this may be enough for VDD to drop below BOR, until VDD rise a bit more. It may toggle a bit between the two "states".