uPSD3334 - CPU not function

[yehudal]

Posted on March 28, 2008 at 15:47

uPSD3334 - CPU not function

[yehudal]

Posted on May 17, 2011 at 11:51

I have 100 units with uPSD3334DV

From some reason during the operation in 10 units the CPU stoped function

and change the out-port data - after power cycle the system return to work properly

I checked Volatges, Crystals and it was fine

I know it too general - but do somebody have any idea what can cause this

problem

joeil

[aa_it]

Posted on May 17, 2011 at 11:51

Hello,

I had the same problem. The reason was that the I used the battery backup function for the SRAM. The battery voltage was rising above Vdd and the SRAM goes to protected mode.

Best Regards,

André Ardesch