> > Are you sure? That does not seem logical to me.
> 
> Why not logical? A series resistor can help protect the MCU 
> quite effectively. 

In my head I model ESD as a small C capacitor charged to a large
voltage, suddenly placed over two (randomly chosen) IC pins. High
voltage means that a series resistor has very little influence on the
voltage caused internally, unless an internal low-impedance path (to the
other pin) exists. Cmos == high input impedance == no such path? 

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu
 
 

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist