Lawrence, there are application where you can't have a BOR operating reliably. Not all products have power cords or batteries and a BOR can add parts to a minimal design. A BOR is more expensive than $0.25 in small qty. and it is not snake oil. You have to trust someone after all. A proper regulator/reset chip is the 'right' solution imho., for a smaller real estate on the board than the BOR (even in SMD). Maybe in consumer equipment you can go with a BOR, after all you do not solder them yourself, you outsource. In most PICs the watchdog timer continues to work a long time after the voltage is below anything that makes the cpu work right. This and the repeated resets it produces act almost like a BOR for me. I can also turn up the voltage in 10 mV/sec increments and nothing bad happens because I write my code with such things in mind. I am not trying to say a BOR is not required I am trying to say that for me the test code method works all the time. Peter -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads