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Rev. 1.0, 07/01, page 349 of 372
Appendix B I/O Port Block Diagrams
B.1 I/O Port Block
RES
goes low in a reset, and
SBY
goes low in a reset and in standby mode.
PDR
PUCR
PMR
PCR
PUCR: Port pull-up control register
PMR: Port mode register
PDR: Port data register
PCR: Port control register
TRGV
Internal data bus
Pull-up MOS
Legend
Figure B.1 Port 1 Block Diagram (P17)