fluke Posted October 22, 2007 Report Share Posted October 22, 2007 I have a JDM programmer (Jaycar kit that i built some time ago but only just got around to trying). Using IC-Prog under Windows 98 it passes all the hardware checks, the outputs are going to the PIC socket, the input is detected from the PIC socket. But programming a 16F88 fails verification at address 0. Reading in the 16F88 gets all high bits. Vdd is 4.99V and Vpp is 12.7V. The 16F88 datasheet says Vpp should be 13V +/- 0.5V and Vdd+3.5V so it seems to be in spec. Should i try increasing it? I've tried using WinPic800 but that doesn't work either. Is there anything else i should try? Quote Link to comment Share on other sites More sharing options...
TK. Posted October 22, 2007 Report Share Posted October 22, 2007 Unfortunatly I can only say, that increasing the voltage won't help.JDM is known for such issues with newer PICs...Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
julienvoirin Posted October 23, 2007 Report Share Posted October 23, 2007 i used the same voltages as u did with p18.exe and it worked. maybe can u try it ?regards Quote Link to comment Share on other sites More sharing options...
stryd_one Posted October 23, 2007 Report Share Posted October 23, 2007 I used a SmashTV JDM with PICPGM and it worked perfectly on 452, 4620, and 4685... Writing the how-to document is on my shortlist, I'll update here when it's done. Quote Link to comment Share on other sites More sharing options...
fluke Posted November 3, 2007 Author Report Share Posted November 3, 2007 I tried PICPGM and it detected the programmer fine with a fresh 16F88 in it. I tried programming it, but still got verification errors and afterwards the programmer wasn't detected anymore. I suspect there is something wrong with my programmer so i shall try building a MBHP Burner instead. Quote Link to comment Share on other sites More sharing options...
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