I have a 16f628a running at 3v also and it works fine.(2 AA batteries) As the datasheets show, they wont run above 4Mhz if run at lower voltages. If your trying to run it on a 20Mhz crystal, that may be your problem.
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Re: Running a PIC16F628a on 3 Volt Power Supply
I have a 16f628a running at 3v also and it works fine.(2 AA batteries) As the datasheets show, they wont run above 4Mhz if run at lower voltages. If your trying to run it on a 20Mhz crystal, that may be your problem.
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