Question: What are the differences between SIO and GPIO pins in PSoC® 3 and PSoC 5LP?
Table 1 summarizes the major differences between SIO and GPIO pins in PSoC3 and PSoC 5LP.
Table 1. Differences Between SIO and GPIO Pins
|Current Sink||25 mA/pin||8 mA/pin|
Output Level (Voh)
|6 V||VDDIO+0.5 V|
|Port 12||Multiple other ports|
For more information on using SIO pins, please refer to AN60580 - SIO Tips and Tricks in PSoC® 3 / PSoC 5LP.
For usage details of GPIO pins, refer to AN72382 - Using PSoC® 3 and PSoC 5LP GPIO Pins.