Datasheet

Appendix C I/O Port Block Diagrams
Rev. 4.00 Sep 27, 2006 page 1095 of 1130
REJ09B0327-0400
D
R
QD
P44DR
C
R
Q
P44DR
C
Reset
WP4D
WP4
TMO1 output
Output enable
8-bit timer 1
P44
Hardware standby
RP4
WP4D: Write to P4DDR
WP4: Write to port 4
RP4: Read port 4
Reset
Host interface
RESOBF1
(resets HIRQ1)
Timer connection
HSYNCO output
Output enable
Internal data bus
Legend:
Figure C.10 Port 4 Block Diagram (Pin P44)