Jinx wrote:
>> The 555 is for giving 60Hz without any complicated divisors. I
>> had thought of doing it in software, but I chose to go the other way.
>
> To get an "exact but average" 60Hz with a 20MHz isn't too difficult
> but there are easier ways

True, but just using the closest divisor from the 5MHz instruction clock is
still far more accurate and stable than a 555 timer.


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