Hello Arai-san,
Thank you for posting on Infineon Community.
In the case that those pins are not used and have been disabled in PSoC Creator, you can:
-Leave them floating.
OR
-Connect them to GND.
When disabling the pins from PSoC Creator, the pins go into high-Z mode to avoid damage.
Therefore, both of the methods above can be used.
Best regards,
Pablo
