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GPIO pin shocked with 5v


#1

hi,
this is kinda stupid question, but what will happen if the digital GPIO pin on a specific socket on the fez spider will be signaled with 5v and not 3.3v like i saw in a module creating guide?

will it work? fry the circuit? just wont work? fry something else?


#2

Depends on MCU. The datasheet usually specifies tolerance.


#3

Most GHI SoM’s are 5V tolerant (G120 for example is). This means it will not harm the CPU, but the current is a bit higher.
Look in the GHI Brochure or the CPU Datasheet to be sure.