MSM80C154S/83C154S/85C154HVS
34
D0
D1
D2
D3
D4
D5
D6
D7
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
MSM74HC373
LATCH
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
ALE
P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P2.7
PSEN
MSM80C154S/MSM83C154S
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
OUTPUT ENABLE
CS
Q7Q6Q5Q4Q3Q2Q1Q0
ROM
64kW × 8BIT
Figure 2-25 MSM80C154S/MSM83C154S external ROM connection diagram