On Mon, 20 Jan 2003 09:01:51 +1000, Des Bromilow wrote: I'm designing battery operated device which uses F84 , but I don't know which values to use for the POR circuit (or if it's even needed.) The F84 will be running either off a RC timebase, or off a 32kHz crystal. The power up timer should be enough by itself. Approx 30mS I believe. However you could add a 10K resistor from _MCLR to Vdd and a 100nF cap to Vss. Colin -- cdb, bodgy1@optusnet.com.au on 20/01/2003 I have always been a few Dendrites short of an Axon and believe me it shows. Light travels faster than sound. That's why some people appear bright until they speak! -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body