In SX Microcontrollers, SX/B Compiler and SX-Key Tool, phipi wrote: Are you sure it's an issue with the SX chip and not with the SX Key? Maybe that's the device that won't work properly at 3V. (The SX Key manual does say it needs 5V, BTW.) I've always designed SX boards that needed to run at 3.3V with a jumperable 5V option for programming and debugging. -Phil ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=184217#m184345 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2007 (http://www.dotNetBB.com)