hello, Anybody can recommend 3 volt Vref Diode.. I cant use a 2.5volt such as LM336BZ-2.5 as the datasheet for pic18f242 says: (VREFH - VREFL) must be minimum of 3V when Vdd >= 3V.. is this correct as I've heard on other PICS its 2.5volts.. maybe I could use a zener but unfortunately I could not find any zeners here that has 1% tolerance.. thanks.. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist