> If you grab something like the STM32F4 Thanks, I'm looking it up, sounds like a research project for the next spare weekend The card reader I have here (which has sockets for 5 types of card + USB) uses a Realtek RTS5161 and a scattering of R and C, that's about it Joe ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2015.0.5646 / Virus Database: 4284/9102 - Release Date: 02/12/15 --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .