I had a similar problem with a 20MHz program and it turned out I was using the wrong fuse setting for the clock when burning the chip. I was setting it as XT but when I set it as HS all was good.
Just something else to try
Paul
I had a similar problem with a 20MHz program and it turned out I was using the wrong fuse setting for the clock when burning the chip. I was setting it as XT but when I set it as HS all was good.
Just something else to try
Paul
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