Mike Harrison wrote : > take a look at the 12F635... That is a 1 K flash "KEELOQ"" device. The 12F683 is more "general purpose" and have 2 K flash. Still with the nW intosc, of course. Regards, Jan-Erik. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist