HD6433044 Datasheet, PDF (845/867 Pages) Hitachi Semiconductor – Hitachi Single-Chip Microcomputer

Reset
R
Q
D
P9 ₁ DDR
C
WP9D
Reset
R
P9 ₁
Q
D
P9₁ DR
SCI1
C
WP9
Output
enable
Serial
transmit
data
RP9
WP9D: Write to P9DDR
WP9: Write to port 9
RP9: Read port 9
Figure C-9 (b) Port 9 Block Diagram (Pin P9₁)
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