microcontroller input and output voltages

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Hi everybody,

I am using ATtiny87 microcontroller, and I need 12 for I/O pins. The pins are digital ports. However I can't find anywhere in the datasheet to tell me what
exactly is the output voltage that is equivalent to 1 (on) and 0 (off). I also can't find the range of acceptable voltages input voltages the microcontroller
accepts (I found the operating voltage but i don't think that is the same thing)! :-?
 

Hello!

I would be surprised that it's not in the documentation, in "electrical characteristics".
You should find the maximal value of a 0 and the minimal value of a 1.

Dora.
 


Hi,

Above you see VOL and VOH,

Now look for VIL and VIH.

Klaus
 

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