> That is my experience also; I have hundreds of 'F452 boards > in the field, > all with a floating RB5, all programmed fine with a standard Microchip > ICD-2. Mind you, I'll be putting a 10k from RB5 to GND on the > next rev of > the pcb... I can not guarantee that floating LVP will cause a problem, and maybe it was just on the early chips that supported LVP (16F628 was the first?), but just like a 100nF cap on the power pins: it cost little and might prevent a lot of trouble.. Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads