[sdiy] Divide by 10^6?

[Jason Tribbeck]

Hi,

> > A tiny microcontroller would eat this job - single chip solution.
> > Use the 20MHz as the micro's clock and a simple program could even
> > supply a couple of LED flash rates (or 4 LEDs with quadrature drives?).
> 
> Beware that external clock often has restrictions on duty cycle and
> rise/fall times. A better solution is to use asynchronous timer input
> which is available in many MCUs.

I'd use half a '74 to divide by 2, and then input that into the microcontroller's clock.

That's what we did with some CPUs a while back when the output of the oscillators wasn't 50% duty cycle that the CPU needed.
-- 
Jason Tribbeck