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CPU does not work after power reset.

HI.

I am currently developing the motor control logic and CCP using the 28335.

I have a problem that the cpu does not work when I reset the power after entering the code in the cpu.

It works well the first time enter code in cpu. 

However, after power reset, JTAG connection is not possible and the logic inside the CPU does not work properly.

Also, sending a reset signal from the outside does not work at all.

We say this is the cpu is dead.

I have developed CCP logic and motor control logic separately.

Both of these codes worked well. However, after combining the two codes, the CPU died.

We have considered many different reasons for this problem.

At first I thought that watchdog would cause an infinite reset, but if the watchdog is a problem, it would not be explained that JTAG does not connect.

The second problem is CPU memory modification. However, I think that it is not a memory problem because I used the memory map in CCP logic.

So, the third thing I think is that this problem occurs because the memory area used by the motor control logic does not match the memory area used by the CCP logic.

I do not care if you do not give me the perfect solution.

If you know the cause of the cpu dying just like the above, I would really appreciate it if you could explain the cause of the probable cause briefly.

Thank you.