Initialization time

[lgs]

Hi Team,

I want to know the time with time resolution milliseconds for initialization time of nrf52840 chips and nrf52840 DK with external supply model?

KInd regards,

Gaosheng

[Håkon Alseth]

Hi,

 

The startup time for any nRF device will depend on several factors, like supply rise time:

https://infocenter.nordicsemi.com/topic/ps_nrf52840/power.html?cp=4_0_0_4_2_7_2#unique_1752780615

In addition to what you're doing in firmware and where you're measuring. Lets say that you add a test point (for instance setting a GPIO) when you have reached main(), the CPU has already executed several functions before and possibly started external clock sources and waited for them to properly stabilize first.

 

Kind regards,

Håkon