Datasheet

Appendix C I/O Port Block Diagrams
Rev. 4.00 Jun 06, 2006 page 973 of 1004
REJ09B0301-0400
D
R
QD
P43DR
C
Reset
R
Q
P43DDR
C
Reset
WP4D
WP4
Host interface
RESOBF2
(resets HIRQ11)
Timer connection
HSYNCI input
8-bit timer 1
Counter clock input
P43
RP4
Legend:
WP4D: Write to P4DDR
WP4: Write to port 4
RP4: Read port 4
Internal data bus
Hardware
standby
Figure C.9 Port 4 Block Diagram (Pin P43)