The first time I seen the ICSP cables with PGC and PGD adjacent to each other I suspected it was not a good idea. As the technology is applied to ever faster chips crosstalk has got to be a limiting factor.
If anyone is designing a PIC programmer I suggest changing
VPP, VDD, GND. PGC, PGD
to
VPP, PGC, GND, VDD, PGD
This should eliminate crosstalk.
There is a short discussion on the subject at
http://www.embedinc.com/picprg/icsp.htm
Under the section header PGC to PGD Crosstalk.
You can toss rotten fruit at me if you like...
If anyone is designing a PIC programmer I suggest changing
VPP, VDD, GND. PGC, PGD
to
VPP, PGC, GND, VDD, PGD
This should eliminate crosstalk.
There is a short discussion on the subject at
http://www.embedinc.com/picprg/icsp.htm
Under the section header PGC to PGD Crosstalk.
You can toss rotten fruit at me if you like...