HD6433308 Datasheet, PDF (123/349 Pages) Hitachi Semiconductor – Hitachi Single-Chip MicroComputer

Mode Mode 3
DPME Mode 3 ^{1 or 2}
Reset
Hardware standby
Mode 3
P8 0
Mode 1 or 2
SR
Q
D
P8 ₀DDR
C
WP8D
Reset
R
Q
D
P8₀ DR
C
WP8
E
RP8
WP8D: Write Port 8 DDR
WP8: Write Port 8
RP8: Read Port 8
Figure 5-14. Port 8 Schematic Diagram (Pin P80)
Dual-port RAM
module
Register select
input
108