Joe,
     Well the PWM is out. Are you trying to say that we only need the=20
20ns? What if we are off a little bit and the reset pulse is only 19ns=20
long. Wouldn't it be better to use a longer pulse to insure that we=20
always meet that 20ns requirement?
Thanks,
rich!

On 7/18/2014 5:50 AM, IVP wrote:
>> My understanding of the PWM is that once setup it continues to
>> output what ever all by its self with no input from the rest of the code
>> being necessary
> That is true, but 1Hz is a very very very low speed for PWM and is
> not achievable with the PWM module when the PIC is running so fast.
> I have a sensor driver that takes 40Hz - 150Hz PWM and had to
> use the timers as the PIC (628 or 88) also had to be running fast for
> other functions. 150Hz is well below the minimum frequency of the
> PWM module.
>
>>   OK, I see. So you just execute 5 or 6 NOPs for the reset pulse
>> since it isn't critical?
> I doubt it. 20ns will be the minimum time. Once the reset is in effect
> you can't make it any resetier by extending the pulse
>
> Joe

--=20
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