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ADUC848 - UART Dying symptom.

Question asked by liakim on May 11, 2016
Latest reply on May 12, 2016 by MMA

Hi. This is Lia kim in ODA Tech.

We use circuit board to make DC power supply.

Our suppliere is using ADUC848 on the circuit board.

 

And we found UART Dying symptom recently.

Other function is okay but only UART is dying.

We have to reset to put UART on.

 

We tried to solve on our own. Below is our trial.

We reset the SFR, PLL, All interrupt resistor, but UART dying symptom is happening again.

Also, we put 1000 data in one time, but UART dying doesn't happen.

Also, we put 3kV by RS 232C port(isolated) but, UART dying doesn't happen.

 

We suspect interrapter is off.

 

We want to know why this is happening and how to solve this issue.

Our customer is finding this problem so we want to figure out and help them.

Please kindly check this and help us get through this problem.

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