Hitachi H8/3048 Hardware Manual page 831

Appendix C I/O Port Block Diagrams
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C.1 Port 1 Block Diagram
Hardware standby
External bus
released
P1
n
WP1D: Write to P1DDR
WP1: Write to port 1
RP1: Read port 1
n = 0 to 7
Software
standby Mode 7
Mode 1 to 4
Mode 7
Mode
1 to 6
Figure C-1 Port 1 Block Diagram
824
Reset
R
Q D
P1 DDR
n
C
WP1D
Reset
R
Q D
P1 DR
n
C
WP1
RP1