On Tue, 2004-01-20 at 12:32, Mark Beetge [ MTN - Harrington Street ] wrote: > The data sheet on page 185 indicates that the internal reference is Vdd > and Vss, but youv'e given me an idea: I use ICSP on the circuit which > means that Vdd comes via a resistor (100ohm). Tonight I will check if > maybe the voltage drop across it is too great thus giving 3.5 volts as > Vdd > Mark I was looking at Page 289 of 39564b, table 22-21, but I think I mis-understood what it means by "vref" ... D'OH ! Peter -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body