Datasheet

Appendix C I/O Port Block Diagrams
Rev. 4.00 Sep 27, 2006 page 1091 of 1130
REJ09B0327-0400
C.4 Port 4 Block Diagrams
D
R
QD
P40DR
C
Reset
R
Q
P40DDR
C
Reset
Hardware standby
WP4D
WP4
SCI2
TxD2/IrTxD
Transmit enable
8-bit timer 0
Counter clock input
P40
RP4
WP4D: Write to P4DDR
WP4: Write to port 4
RP4: Read port 4
Internal data bus
Legend:
Figure C.6 Port 4 Block Diagram (Pin P40)