Datasheet

Appendix C I/O Port Block Diagrams
Rev. 4.00 Jun 06, 2006 page 992 of 1004
REJ09B0301-0400
C.9 Port 9 Block Diagrams
D
R
QD
P90DR
C
Reset
R
Q
P90DDR
C
Reset
WP9D
Mode 2, 3
EXPE
GA20
HI12E
CS2E
WP9
HIF
ECS2 input
A/D converter
External trigger
input
P90
RP9
Legend:
WP9D: Write to P9DDR
WP9: Write to port 9
RP9: Read port 9
IRQ2 input
IRQ2 enable
Internal data bus
Hardware
standby
Figure C.29 Port 9 Block Diagram (Pin P90)