The question header appeared to bee too long. I'm sorry for that.
So I have a schematic generating a short LOW on INT0 pin of ATmega48PA. From the simulation I figured out that the LOW level will be there for about 800 ns. I plan to clock the AVR from internal RC with 1:8 divider which means 1 MHz Fosc.
How do I make sure that the interrupt will be triggered?
I make some reading of the datasheet but I was looking in a wrong chapters or there is no such information.
Could you please point me into the right direction to find needed info?