1 Microsecond pulses

[Lithanial]

Hey Mark,

Yours also works.


I am curious, did you get any overshooting with your pulse?  I was using a 60 MHz scope.

[RIDDICK]

overshooting would need some inductance or capacitance...
i think both r very little inside the MCU...

maybe the wires to the oscilloscope did it?
i had that once with a 12V power cable that was connected to a capacitor via a FET...

[MarkT]

You always get ringing on an unterminated logic signal into a oscilloscope probe - add 100 ohm resistor in series with the probe to vastly reduce this.  The inductance and capacitance are stray.