At 07:23 AM 5/12/2005 -0400, you wrote: >kenasw@btinternet.com wrote: >>The datasheet tells you to use regulated, if you don't then expect >>strange results. > >Oh? What data sheet? Where? I have never seen such statement in a PIC >data sheet. > >The relevant specs that I know of are the min/max Vdd limits during >operation. I don't recall the data sheet telling me (nor should it) how to >produce this voltage, only what it needs to be. Presumably there may be some upper limit to the dv/dt of Vdd, but I've never seen that specified, only the lower limit for proper reset (along with the oh-so-stupid specification that it must start from a *maximum* of exactly zero volts to guarantee reset, but I digress). Best regards, Spehro Pefhany --"it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com Inexpensive test equipment & parts http://search.ebay.com/_W0QQsassZspeff -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist