Ha ha -- I do the double thing also. Or actually one extra as a =20 spare, so if I need two for regular frequent use, I may get three. =20 And for this reason, I'm very cost conscious. Cheers, -Neil. Quoting 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. =20 >> 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: >> > . >> > >> > 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 .