HD6433044 Datasheet, PDF (844/867 Pages) Hitachi Semiconductor – Hitachi Single-Chip Microcomputer

C.9 Port 9 Block Diagrams
P9 ₀
WP9D: Write to P9DDR
WP9: Write to port 9
RP9: Read port 9
Reset
R
Q
D
P9 ₀ DDR
C
WP9D
Reset
R
Q
D
P9₀ DR
C
WP9
RP9
SCI0
Output
enable
Serial
transmit
data
Guard
time
Figure C-9 (a) Port 9 Block Diagram (Pin P9₀)
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