GPIO pin max current input (sink)

[yonggeon]

I want to use led with following connection and i remember that I've seen this application somewhere on the Internet:

3V3 - LED - RESISTOR - STM32 PIN

I've seen the max total current output of MCU then is there any max total input current of MCU?

[Andrew Neil]

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@yonggeon wrote:

 I've seen this application somewhere on the Internet:

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LoL - that is the standard way to use an LED with any microcontroller!

 

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@yonggeon wrote:

is there any max total input current of MCU?

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Yes, these figures will be in the Datasheet for the chip - the Electrical Specifications section.

 

[yonggeon]

does "injected current" mean input current?

[Andrew Neil]

I don't think so - context needed.

You are looking for the GPIO pin current sink capacity.

What chip are you using?