>16f87* can write a single instruction (14 bits) at a time. Hi, yes it can. I was speculating on why PIC flash appears to have 1/10th of the write cycle endurance of other flash (which is called RAM, rather than "program memory") -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads