Datasheet

Appendix C I/O Port Block Diagrams
Rev. 4.00 Jun 06, 2006 page 994 of 1004
REJ09B0301-0400
D
R
QD
P9nDR
C
Reset
R
Q
P9nDDR
C
Reset
WP9D
Mode 2, 3
EXPE
EXPE
HI12E
WP9
Bus controller
RD output
WR output
AS/IOS output
HIF
IOR input
IOW input
CS1 input
P9n
RP9
Mode 2, 3
EXPE
HI12E
Legend:
WP9D: Write to P9DDR
WP9: Write to port 9
RP9: Read port 9
Note: n = 3 to 5
Internal data bus
Hardware
standby
Figure C.31 Port 9 Block Diagram (Pins P93 to P95)