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Appendix C I/O Port Block Diagrams
C.8
Port 8 Block Diagrams
P8
0
WP8D:
Write to P8DDR
WP8:
Write to port 8
RP8:
Read port 8
SSOE:
Software standby output port enable
Rev. 4.00 Jan 26, 2006 page 892 of 938
REJ09B0276-0400
Hardware
standby
SSOE
Software standby
External bus
released
Figure C.8 (a) Port 8 Block Diagram (Pin P8
Reset
R
Q
P8 DDR
0
C
WP8D
Reset
R
Q
P8 DR
0
C
Mode 6/7
WP8
RP8
D
Bus controller
D
Self-refresh
output enable
RFSH output
enable
RFSH
output
Interrupt
controller
IRQ
0
input
)
0
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