Hi!
I'm interested on the variate of making the conclusion does a uC is bad or not.
So, lets say we have a circuit with an LCD driver and a uC.
The uC can be whatever uC (I dont ask for a specific one).
The board is bad.
You want to repair it.
Everything looks fine bit the lcd still not working.
So, a doubt is on a defective uC.
How to agree with it?
I do these tests:
1. by using the datasheet of the uC check for power on voltages
2. checking for a shortening on the Vcc and Vss line
3. check for overheating
4. if I have some known output signals I will check with scope that
Is there any more test's what we could do to be more sure about a bad or not bad uC?
What is your method?
Thanks.