Datasheet

ST10F269
158/184
Figure 73 : External Memory Cycle: Multiplexed Bus, With / Without Read / Write Delay, Normal ALE,
Read / Write Chip Select
Read Cycle
Write Cycle
CLKOUT
ALE
A23-A16
(A15-A8)
BHE
Data In
Data Out
Address
Address
t
44
t
5 t
16
t
25
t
27
t
51
t
46
t
50
t
56
t
48
t
42
t
42
t
6
t
52
Address
t
17
t
6
t
7
t
43
t
45
t
49
t
47
t
16
t
48
t
49
Address
t
43
RdCSx
WrCSx
Address/Data
Bus (P0)
Address/Data
Bus (P0)