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problem in 89C55WD

Hi,
I was using 89C52 for my project. It worked fine but due to larger code size. I have to shift to 89C55WD.
But the problem is that when i first burnt the code in the microcontroller, every thing was fine. But after serial reception it came to hanging state. And then it is not responding after that. It has happened to me twice. There is no pb in circuit, i have already checked.
If anyone has solution please help me.
Thanks Afshan

  • I think this is a lost case simply by this fact
    Toolset
    None
    problem in 89C55WD

    There is no pb in circuit
    so it's lead-free, that is nice

    If anyone has solution please help me.

    on the sketchy description It worked fine but due to larger code size. ... after serial reception it came to hanging state all you can expect is guesses.

    MY guess is that you had a problem in the original code that happened to be hidden by the fact that there was less to do than now. look for atomicity issues as the first thing.

    Erik