MCUmall EPROM BIOS Chip Burner Forum
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 Can't program 16F628A

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dburniston Posted - 01/15/2008 : 18:51:35
I have the enhanced JDM programmer and I'm having trouble programming the 16F628A. I've successfully programmed a 16F877A and a 12F675, so I know the programmer is ok.

PicPgm finds the programmer and identifies the PIC as a 16F628A. When I try to program, it says it works, but verify fails. Reading the chip shows all 0's. I can erase and if reverts back to 3FF.

I've tried PicPgm, WinPic800 and IcProg with similar results.

Anyone have any suggestions?
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dburniston Posted - 01/24/2008 : 16:29:14
Thank you!

Yes, the code protect was set in the sample hex file I downloaded to test. The program I was using didn['t make it clear until I checked with another.

I turned off code protect and it is working fine now.
ZLM Posted - 01/19/2008 : 01:11:02
Check the code protection bit. It seems that bit been enabled.

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