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Wake up from total power down mode

I use the MCB900 prototype board (revision E).
My source code is in assembler (.a51)

When I debbug my code with µvision2 software, I have No errors, No Warning, and all the interrupts are abble to exit the total power down mode.

But when I run the application with the MCB900 (P89LPC932 MCU), the system stay on the power down mode and nothing can get out the MCU from it.

Is it a bug on the MCB900 prototype board or am I mad ?

Thanks for your response,
Dorian.

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