In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bean wrote: Try putting a 0.1uF cap as close as possible to the sx-key header on your board. As Peter has said, either the supply is sagging (4.9V won't work), or one of the OSC pins cannot be brought to 12V (this usually happens when you have an oscillator clocking the SX). Bean. ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=139996#m140019 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2006 (http://www.dotNetBB.com)