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Why can't I do a reset when I try to make the circuit operates properly?

Latest Updated:10/01/2003

Question:

The circuit suddenly stops operating properly and I can't execute a reset.

Answer:

It is possible that a non-prescribed voltage (including noise) has been input to a CMOS device causing latch-up.

If the device is undamaged, you should be able to restart the device using the correct input voltage by cutting off the power supply, reapplying power, and then executing a reset.
However, because latch-up accelerates degradation, we recommend that you don't mass produce systems that use this device.
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