Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Toshiba/M369/PI/PUP#0x0
PI Pull-Up Control Register
PI0UP
PI1UP
PI2UP
PI3UP
PI4UP
PI5UP
PI6UP
PI7UP
https://github.com/cmsis-svd/cmsis-svd-data