Datasheet

Appendix C I/O Port Block Diagrams
Rev. 4.00 Jun 06, 2006 page 993 of 1004
REJ09B0301-0400
D
R
QD
P9nDR
C
Reset
R
Q
P9nDDR
C
Reset
WP9D
WP9
IRQ1 input
IRQ0 input
IRQ1 enable
IRQ0 enable
P9n
RP9
Legend:
WP9D: Write to P9DDR
WP9: Write to port 9
RP9: Read port 9
Note: n = 1 or 2
Internal data bus
Hardware
standby
Figure C.30 Port 9 Block Diagram (Pins P91, P92)