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| Datasheet File OCR Text: |
| 1
2
3
4
5
9
10
11
12
13 26
25
24
23
22
18
17
16
15
14 dq1 i/o
dq2 i/o
we in
ras in
a9 in
a0 in
a1 in
a2 in
a3 in
dq4 i/o
dq3 i/o
cas in
oe in
a8 in
a7 in
a6 in
a5 in
a4 in 25
24
2
1 dq4
dq3
dq2
dq1 a9
a8
a7
a6
a5
a4
a3
a2
a1
a0 5
18
17
16
15
14
12
11
10
9 we
oe
ras
cas 3
22
4
23 input
a0 - a9
cas
oe
ras
we
input/output
dq1 - dq4
: address
: column address strobe
: output enable
: row address strobe
: write enable
: data v dd gnd column
address
buffers row
address
buffers internal
address
counter timing
generator refresh
control
clock row
decoders word
drivers memory
cells input
buffers sense
amps i/o
selector output
buffers column
decoders write
clock
generator timing
generator ras 4 cas 23 on-chip
v bb v dd 13 gnd 26 a0 - a9 5,
9 - 12
14 - 18 we 3 oe 22 1, 2
24, 25 dq1 -
dq4 MSM514400ASJ-70
il22d c-mos 4 m (1,048,576 x 4)-bit dram
?op view ( datasheet : )
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