HD6433044 Datasheet, PDF (841/867 Pages) Hitachi Semiconductor – Hitachi Single-Chip Microcomputer

C.8 Port 8 Block Diagrams
P8 ₀
Mode 7
Reset
R
Q
D
P8 ₀ DDR
C
WP8D
Reset
R
Q
D
P8₀ DR
C
WP8
Refresh
controller
Output
enable
RFSH
output
RP8
WP8D: Write to P8DDR
WP8: Write to port 8
RP8: Read port 8
Figure C-8 (a) Port 8 Block Diagram (Pin P8₀)
Interrupt
controller
IRQ ₀
input
834