Recommended Rugged Circuits Gator Pullups/Pulldowns?
On circuits A & B without current limit resistor R1 and the I/O pin set as "output" (by accident or on purpose) A High for A and LOW for B and activating SW1 on you could lose your I/O pin and maybe the chip. Installing R1 current limits the I/O.
The Gator's I/O pins have a 510 ohm current resistor and 5.1 V zener for ESD, overvoltage protection and current protection built in their printed circuit board.
Since the Gator's protection is built in, in circuits C & D will my pullup and pulldown circuts be OK on the Gator? Note: The internal weak pullups are not used.
Re-edited 17:38 8/23/09
