I found out this table on the datasheet of STM32.
I knew that I_VSS is the maximum of input crurrent suply the chip can bear without any damages. Did I get that right?
Can anyone explain the parameters in this table for me?
Thank you!

 

This I assume is obvious -



This is current injected into or taken out of a pin where you go outside its rails by ~ .7V and turn
on the parasitic diodes in the CMOS structure.




Regards, Dana.

 

Parasitics in CMOS -

Regards, Dana.

 

Not so obvious since you got it wrong. That is the max source and sink current for a single pin. For instance, if you are driving an LED.

Bob

 

Got what wrong ?



Then there is this condition of injection -



The first condition led drive current as you state, the second preventing parasitic SCR
from triggering in CMOS.


Regards, Dana.

 

Thank you all. I got it.

 

Okay, that was not clear. I assumed the text below the first table was explaining what the parameters in that table meant.

Bob