topic Re: GPIO Current on iMx8M nano in i.MX Processors

GPIO Current on iMx8M nano

sergiospader — Fri, 23 Apr 2021 19:45:18 GMT

Good Morning,

I'm designing a new product with IMx8M Nano.

Considering LED interface, I plan to use some GPIOs to control Alarm/power/etc LEDs.

What is the best approach for connection ? Current flowing from IMx8M or draining into IMx8M ? What are the current limits for both approachs ?

sergiospader_0-1619207091544.png

Thanks

Sérgio

Re: GPIO Current on iMx8M nano

IvanRuiz — Tue, 27 Apr 2021 19:44:12 GMT

Hello,

The first configuration (at the top) seems ok, but only keep in mind the maximum current supported by the GPIO as found in the datasheet.

BR,

Ivan.

Re: GPIO Current on iMx8M nano

sergiospader — Fri, 30 Apr 2021 12:07:27 GMT

Thanks for prompt answer!

But I do not found this current information in datasheet.. I found only the information below, but it is rated in uA and probably is not the correct one... For the connection you select I need values at mA level to turn On a LED. Where I can found the Input max current info ?

sergiospader_0-1619784150318.png

Re: GPIO Current on iMx8M nano

sergiospader — Fri, 07 May 2021 20:01:05 GMT

Good Morning,

@IvanRuiz can you help me with the reply above ? This is one of the few doubts we have to finish PCB layout

Thanks

Re: GPIO Current on iMx8M nano

IvanRuiz — Wed, 12 May 2021 22:29:06 GMT

Hi @sergiospader ,

I am currently waiting for internal confirmation about this value, will come back asap.

BR,

Ivan.