HD6433044 Datasheet, PDF (847/867 Pages) Hitachi Semiconductor – Hitachi Single-Chip Microcomputer

Reset
R
Q
D
P9 _n DDR
C
WP9D
Reset
R
SCI
Clock input
enable
P9 _n
Q
D
P9_n DR
C
WP9
Clock output
enable
Clock output
RP9
WP9D: Write to P9DDR
WP9: Write to port 9
RP9: Read port 9
n = 4 and 5
Clock input
Interrupt
controller
IRQ ₄ or IRQ ₅
input
Figure C-9 (d) Port 9 Block Diagram (Pins P9₄, P9₅)
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