In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Rsadeika wrote: Timothy, If your questen is, why you have external resonators. The best answer that I have is, if you run a program without the SX-Key installed, you need a resonator on board. I was under the impression that the processor had an internal resonator, but on my SX-28 tech board, once the SX-Key is removed nothing happens, even when the setting is set to freq 4_000_000. So, I have to plug in the freq specific resonator. Ray ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=100952#m100973 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2005 (http://www.dotNetBB.com)