08-31-2011, 12:11 AM
I'm designing a board usign the P8X and the WizNET module. I'm running out of I/O pins. Up until now, I've dedicated a Prop I/O pin to reset other components (the WizNET module, registers, etc) at startup. I'd like to reclaim that I/O pin for use in other areas. I've read that without Schmitt trigger input, a simple RC circuit won't likely work. I've searched and see there are a plethora of options (too many to search through). I was wondering if there is a standard way of doing this that is used by people on this forum. One additional complication is that I have both 3.3v and 5v chips that will need to be reset on power up. Luckily, they both have RESn (low reset). Thanks for any suggestions/tips from your experience.