>>That particular 24F part doesn't meet the 5V operation requirement. There are 5V parts, but they seem to be limited to 2K RAM if I'm reading Microchips parametric charts correctly. >>I know at the end of the day it's a "to each his own" decision. But looking at your chart above, it still looks like 16F1938/16F1939 parts meet= s my criteria list and still are the best deal. I couldn't argue against 5V support, you may be right that is probably important for hobby use. Even though PIC24 are 5V tolerant in all pure digital pins, it is not suitable for easy interface in/out 5V parts. -Ariel --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .