HD64F2149 Datasheet, PDF (993/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

C.4 Port 4 Block Diagrams
Hardware
standby
P40
Reset
R
Q
D
P40DDR
C
WP4D
Reset
R
QD
P40DR
C
WP4
SCI2
TxD2/IrTxD
Transmit enable
RP4
WP4D : Write to P4DDR
WP4 : Write to port 4
RP4 : Read port 4
8-bit timer 0
Counter clock input
Figure C.8 Port 4 Block Diagram (Pin P40)
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