Introduction
The any-signal-to-any-pin routing available with PSoC 3 and PSoC 5LP GPIOs helps to optimize PCB layout, shorten design time, and allow for a large degree of solder-less rework. However, with this freedom comes a steeper learning curve than with a traditional microcontroller. This application note introduces you to PSoC 3 and PSoC 5LP GPIO basics and demonstrates techniques for their effective use in a design.