HD64F3670 Datasheet, PDF (288/305 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

Internal data bus
PMR
PDR
PCR
SCI3
TxD
Legend
PMR: Port mode register
PDR: Port data register
PCR: Port control register
Figure C.5 Port 2 Block Diagram (P22)
Rev. 1.0, 03/01, page 264 of 280