Bala Chandar wrote: > the marking on the chip is "PIC16F84A-04/P". Does "04" in the > marking mean that its maximum frequency is only 4MHz? Yes. -Andy === Andrew Warren - fastfwd@ix.netcom.com === Fast Forward Engineering - San Diego, California === http://www.geocities.com/SiliconValley/2499 -- http://www.piclist.com hint: PICList Posts must start with ONE topic: "[PIC]:","[SX]:","[AVR]:" =uP ONLY! "[EE]:","[OT]:" =Other "[BUY]:","[AD]:" =Ads