AVR-Chat

At a guess,m substitute a single 3.3 V zener diode for each voltage 
divider.    Ought to work (I think).   Only potential problem I can see 
is it could end up overloading the AVR outputs.

tom

kernels_nz wrote:
>
> Hey guys,
>
> Anybody know what the best way is to interface a 5V output on my
> Mega64 to a 3V input on a Nordic RF IC ? The Nordic datasheet
> specifies a max input voltage of VDD + 0.3V (3.3V)
>
> Best way I could come up with was a voltage divider on each line, but
> theres six lines, so thats 12 extra resistors !
>
> I need to run the Mega at 5V because of interfacing to other 5V
> components, so running it @ 3V is not an option unfortunately
>