Answer by Justme for What is expected resistance of MCU power supply pins?
As MCUs and other ICs are not resistances, they have no defined resistance. And on a PCB, there are many components over the supply and ground nodes.Only if you try measuring a board supply and ground...
View ArticleAnswer by Kevin White for What is expected resistance of MCU power supply pins?
In my experience it is unlikely to be an IC. More likely is a solder bridge or shorted capacitor.You may be able to to determine where the short is by applying a low voltage from a current-limited...
View ArticleAnswer by Kuba hasn't forgotten Monica for What is expected resistance of MCU...
I am hesitant to apply external voltage to itAs long as it is current-limited, it should be OK.Visual inspection does not show any bridges, but it is hard to tell with LQFP pitch.You need a good...
View ArticleWhat is expected resistance of MCU power supply pins?
I've assembled several identical boards and one of them does not work. Visual inspection does not show any bridges, but it is hard to tell with LQFP pitch. The voltage on power rail was zero. I've...
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