Bob Blick wrote: > On old 16C parts you do it with RA4 because the old process could > tolerate the voltage. But you'll need to use an extra transistor to > level shift. Attached is an example. You can simplify this by moving R1 to the emitter of Q1 and losing R3 altogether. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist