MCUmall EPROM BIOS Chip Burner Forum
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 True USB Willem Programmer (GQ-2X, GQ-3X, GQ-4X)
 GQ-4X and PIC12F629 - CFG verify fails
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21 Posts

Posted - 08/14/2016 :  07:06:29  Show Profile  Reply with Quote

I am trying to write to PIC12F629. I have three brand new chips. They ID check OK and blank check OK, but they all fail to verify the configuration.

Software/hardware/driver version and error message:

Configuration tab (Hex File):

Configuration tab (Read from device):

(I would have uploaded the pics to the forum directly but was having trouble)
Reply #1


2942 Posts

Posted - 08/16/2016 :  19:37:04  Show Profile  Reply with Quote
It seems the hex file configuration is not right. It is trying to change the reserved CFG bit.

From this chip datasheet, the Band Gap Calibration bits must be read and preserved.

So, do not use the CFG from your hex file.
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