Is there an ICSP pinout standard???

[technotronix]

Are you taking about ISO or ISP standards??

[Dave]

As far as I can see over the last 10 or 15 years there is NO industry standard persay. There are a few pinouts that have been adopted by certain manufactures. There is an RJ45 pinout that Microchip uses for it's programmers and has adopted it as a sort of standard. Also there is an 6 pin SIL connector arrangement used for the PK2 and PK3 programmers. I place that one on all of my SMT projects. Also there are a few company's that make "TAG" programmer adapters intended for SMT programming. The pinouts are all different for the different micro mfr's. so there is NO ISO standard. Usually the micro mfr. will somewhat standardize on a pinout for there particular product and development systems.