ivp ha scritto: >> If it is possible to find a PIC with USB and the 90 pins required (some >> PIC18F? > > I think the most I/O any PIC has is 85. 33F, 100-pin TQFP (0.5mm ?) and no 18F part with USB and more than 44 pins... IIRC (may be wrong though, I never needed that) -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist