The general approach is to first check what's easy to check. Monitor the paths that will tell you the most in terms of flagging the problem.
Try a slower clock frequency. Wait for the moment when you want to watch something change, and slow down the clock even more.
Do you know any approaches and how to monitor the paths?
So I sound Disconnect the circuits clock frequency and use a function generators set at a slow clock frequency?
Make sure all guidelines have been followed. All inputs tied to ground or supply+. All input volt levels should be inside spec limits.
3) Monitor Current on supply and use adjustable current limiter to isolate faults with events.
9.) scan nets with fingers to look for stray leakage sensitive faults
11) Use V+ to inject a slight higher voltage to speed up logic to look for metastable faults due to slow or fast IC variation due to V+ changes or heat/cold
3) Monitor Current on supply and use adjustable current limiter to isolate faults with events.
( Use an external lab power supply with a built-in current limiter to monitor the power consumption and turn it back if under fault and find threshold where fault starts for example.)
11) Use V+ to inject a slight higher voltage to speed up logic to look for metastable faults due to slow or fast IC variation due to V+ changes or heat/cold
Notice the words "slight(ly) higher " i.e. 10% may reduce rist times, latency, prop delays enough to cause or cure a metastable fault condition. Similarity slow it down with -10%.
3) Monitor Current on supply and use adjustable current limiter to isolate faults with events.
( Use an external lab power supply with a built-in current limiter to monitor the power consumption and turn it back if under fault and find threshold where fault starts for example.)
11) Use V+ to inject a slight higher voltage to speed up logic to look for metastable faults due to slow or fast IC variation due to V+ changes or heat/cold
Notice the words "slight(ly) higher " i.e. 10% may reduce rist times, latency, prop delays enough to cause or cure a metastable fault condition. Similarity slow it down with -10%.
.If a fault exists then reduce the voltage instead to see if it is voltage sensitive (ie nonlinear) or simply a linear short
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