GPIO Current on iMx8M nano

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GPIO Current on iMx8M nano

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sergiospader
Contributor II

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

 

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sergiospader
Contributor II

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

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IvanRuiz
NXP Employee
NXP Employee

Hi @sergiospader ,

 

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

 

BR,

Ivan.

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IvanRuiz
NXP Employee
NXP Employee

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.

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sergiospader
Contributor II

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