Thanks a lot, I'll try this solution. But I don't understand one thing. Microchip sells the Ic Header for Pic16f690 in a box with the header and two ten pins strip. Why the don't include a cable fitted for the board instead? Cheers Renzo 2011/9/6 Dwayne Reid > These 'debug headers' are a special form of the chip where Vpp, PGD & > PGC have been brought out to dedicated pins. This allows you to use > all of the pins of the device while you are debugging. > > This is much less of an issue with these 20 pin parts but look at the > 12f675 - you would lose 3 of the available 6 i/o lines if you didn't > use one of these headers while debugging. > > Anyway, he should have NO problems debugging his chip once he picks > up one or two of the headers I mentioned in my previous > email. Personally - I always get at least two of them in case I > 'oops' something, in which case, I'm not shut down while waiting for > a replacement to arrive. > > Do note that these headers are covered by Microchips SAR program - > Microchip will exchange dead headers for repaired headers at no > charge. Just like any of the ICD's or emulators. > > dwayne > > > At 11:00 AM 9/6/2011, PICdude wrote: > >I don't know this board off-hand, but "special debug header" to me, > >should just be a header, which to me, should mostly be some > >interconnection adapter. Is there any special logic in these things > >such that some devices cannot be debugged without it? If so, this > >would certainly affect my choice of chips in the future. > > > >Cheers, > >-Neil. > > > > > >Quoting Dwayne Reid : > > > > > At 04:19 PM 9/5/2011, RG wrote: > > >> I try to use Mplab ICSP debug program on a my board or simply using > the > > >> Microchip Low Pin Count Demo Board. > > >> Instructions show how to connect Pickit2 to an IC Header(i.e. the > AC162961 > > >> Ic header for the Pic16f690) and plugging it to the DM164020-1 > > Low Pin Count > > >> Demo Board. > > >> > > >> But the Ic Header AC162061 has no connector to plug in an > > external board, it > > >> can be only connect to Pickit2 with a RJ-11 adapter and has only > > a socket in > > >> which insert a Pic16f690. > > >> Which is the solution? > > > > > > The 16f690 is a 'Low Pin Count' device and requires a special debug > > > header for debugging. Microchip has a PDF file that lists some of > > > those headers: > > > < > http://ww1.microchip.com/downloads/en/DeviceDoc/ICD2_Header_51292L.pdf>. > > > > > > Specifically, you need the PIC16F690-ICD header which is part number > > > AC162061. > > > > > > They are fairly inexpensive. > > > > > > dwayne > > > > > > -- > > > Dwayne Reid > > > Trinity Electronics Systems Ltd Edmonton, AB, CANADA > > > (780) 489-3199 voice (780) 487-6397 fax > > > www.trinity-electronics.com > > > Custom Electronics Design and Manufacturing > > > > > > -- > > > http://www.piclist.com PIC/SX FAQ & list archive > > > View/change your membership options at > > > http://mailman.mit.edu/mailman/listinfo/piclist > > > > > > > > > > >-- > >http://www.piclist.com PIC/SX FAQ & list archive > >View/change your membership options at > >http://mailman.mit.edu/mailman/listinfo/piclist > > > -- > Dwayne Reid > Trinity Electronics Systems Ltd Edmonton, AB, CANADA > (780) 489-3199 voice (780) 487-6397 fax > www.trinity-electronics.com > Custom Electronics Design and Manufacturing > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .