In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Miner_with_a_PIC wrote:

Another thought. Most I/O pins have clamping diodes going between the pin and the rails. No guarantees that the SX does not use a more excentric layout to protect the pins but possibly these could be used. Of course to use them you would have to take the pins into  a state that is outside of their normal operating range. The I/O pin would have to be an input, I recommend going above VDD rather than below VSS. Doing this for a short period only would prove helpful to the SX chip. Now be prepared for latch-up conditions to occur and possible premature failure of the chip. This would be an interesting experiment to perform on your SX guinea pig but not something to impliement into design.  Let me know how the project goes, I would be interested to hear about just how robust the SX chip is.

---------- End of Message ----------


You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=77588#m77642

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)