SM Ling wrote:
> uF Capacitor to VCC or VDD line ?

I had tried a 100nF bypass cap at the target chip.  This reduced noise on
Vdd, but had no effect on the symptom.  You can't put a large cap on Vdd
because it needs to be switched.  You would either have to add a large
timeout whenever Vdd was changed (which I did anyway as a test) or measure
it, which my circuit can't do.


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