HI
I have a Xilinx Spartan3e IO pin connected to a system bus signal. The system bus signal can be active (3.3v/0v) even when the Spartan device is powered off. When the signal is at 3.3, I suspect the ESD protection diode between pad and VCCO on the Spartan IOB is going to turn on. Does anybody know what would be the current drawn?
-Dipankar