Mity CPU Platforms » MitySOM-QC6490

02/24/2026

WE 09:39 PM PCB Development: RE: Auto start

When talking about input power to the SOM that would be the 3V7-BAT rail.
There would be a delay between power being applied (on 3V7-BAT) and when the SOM would be monitoring the POW-BTNn but we haven't quantified this yet. We will se... William Evans

NO 09:14 PM PCB Development: RE: Auto start

Thanks!
Does power have to be high for a certain amount of time before the power-on pulse? If so, which rail and for how long?
Or can POW_BTNn be held low at startup, and released after 400ms? Nathan Olson

WE 07:30 PM PCB Development: RE: Auto start

The only "automatic" power on we have implemented so far is software control from an Arduino.
There are two main stipulations on the POW-BTNn:
# The power on pulse must be greater than 400ms.
# A power button press of 10s is a syste... William Evans

NO 03:15 PM PCB Development: Auto start

I'm using DC power and I'd like to auto-start the SOM when power is applied. What are the requirements for the signal on POW_BTNn?
Is there an example auto-start circuit I can copy? Nathan Olson