Address Multiplexing: Address multiplexing depends on the setting of the M9/
M8
bit in
RFSHCR, as described in table 7-5. Figure 7-4 shows the address output timing. Address output is
multiplexed only in area 3.
Table 7-5 Address Multiplexing
Address Pins
A
23
to A
10
A
9
A
8
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
Address signals during row
A
23
to A
10
A
9
A
8
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
address output
M9/
M8
= 0 A
23
to A
10
A
9
A
9
A
16
A
15
A
14
A
13
A
12
A
11
A
10
A
0
M9/
M8
= 1 A
23
to A
10
A
18
A
17
A
16
A
15
A
14
A
13
A
12
A
11
A
10
A
0
Figure 7-4 Multiplexed Address Output (Example without Wait States)
Address signals during
column address output
ø
A to A , A
A to A
23 9 0
8 1
T
1
T
2
T
3
A to A
Row address
8 1
A to A
Column address
16 9
A to A , A
23 9 0
Address
bus
ø
A to A , A
A to A
23 10 0
9 1
T
1
T
2
T
3
A to A
Row address
9 1
A to A
Column address
18 10
A to A , A
23 10 0
Address
bus
a. M9/ = 0
M8
b. M9/ = 1
M8
159
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