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MSP430FR6989: MSP 430FR6989 unknown instruction

Part Number: MSP430FR6989


Hello Community.

I have very complicated application with some processes, some synchronous and asynchronous interrupts.

One time a day, MSP430 make crash.  In the Memory view i can see, that big part of memory was written with FF FF FF FF and so on.

And I dont know which part of code made this. Are somebody has an Idea how can I get this part of Code.

First I thought of breakpoint on memory write access with written Data FF FF FF FF. But memory is big (128 Kb) and and MSP 430 has only a paar interrupts

Are somebody know another way? From PCs: I know blue screen and message "unknown instruction on the Address 0x.......

But small msp430 looks like hasn't it.

Thanks in advance

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