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Preliminary
MSC23CV43257A-xxBS8¡ Semiconductor
¡ Semiconductor
MSC23CV43257A-xxBS8
4,194,304-Word ¥ 32-Bit DRAM MODULE : FAST PAGE MODE TYPE WITH EDO
DESCRIPTION
The Oki MSC23CV43257A-xxBS8 is a fully decoded 4,194,304-word ¥ 32-bit CMOS dynamic
random access memory composed of eight 16-Mb DRAMs (4M ¥ 4) in TSOP packages mounted
with decoupling capacitors on a 72-pin glass epoxy Small Outline DIMM Package supports any
application where high density and large capacity of storage memory are required.
FEATURES
• 4,194,304-word ¥ 32-bit organization
• 72-pin Small Outline DIMM
• Single 3.3 V supply ±0.3 V tolerance
• Input : LVTTL compatible
• Output : LVTTL compatible, 3-state
• Refresh : 2048 cycles/32 ms
• CAS before RAS refresh, CAS before RAS hidden refresh, RAS-only refresh capability
• Multi-bit test mode capability
• Fast Page Mode with EDO capability
PRODUCT FAMILY
Family
MSC23CV43257A-60BS8
MSC23CV43257A-70BS8
Access Time (Max.)
RAC
60 ns
70 ns
t
AA
30 ns
35 ns
t
CAC
15 ns
20 ns
Cycle Time
(Min.)
110 ns
130 ns
Power Dissipation
Operating (Max.)
3456 mW
3168 mW
Standby (Max.)t
28.8 mW
345
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MSC23CV43257A-xxBS8 ¡ Semiconductor
PIN CONFIGURATION
MSC23CV43257A-xxBS8
(Unit : mm)
3.80 Max.
25.4 ±0.13
3.18 ±0.13
2.0 ±0.13
R2.0
17.78 ±0.13
1.8 ±0.1
2 – φ1.8
3.03
2.62 Typ.
*1
44.45 ±0.1
59.69 ±0.2
44.45 ±0.1
51.66 ±0.1
711
272
3.25 Typ.
5.00
R2.0
5.5 Min.
1.00 ±0.1
1.0 ±0.1
0.25 Max.
0.23 Min.
1.27 ±0.1
346
*1 The common size difference of the board width 19.78 mm of its height is
specified as ±0.2. The value above 19.78 mm is specified as ±0.5.
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Pin Configuration
MSC23CV43257A-xxBS8¡ Semiconductor
Pin No.
Pin Name
11631
2 173247
3 183348
4 193449
5 203550
6 213651
7 223752
8 233853
9 243954
10 25 40 55
11 26 41 56
12 27 42 57
13 28 43 58
14 29 44 59
15 30 45 60
V
SS
DQ0 A5 A9 WE
DQ1 A6 NC NC
DQ2 A10
DQ3 NC DQ15 DQ19
DQ4 DQ8 NC DQ20
DQ5 DQ9 DQ16 DQ21
DQ6 DQ10 DQ17 DQ22
DQ7 DQ11 V
V
CC
PD1 DQ13 CAS2 DQ24
A0 DQ14 CAS3 DQ25
A1 A7 CAS1 DQ26
A2 NC RAS0 DQ27
A3 V
Pin No.
Pin Name
A4 A8 NC
Pin No.
Pin Name
Pin No.
46
RAS2 DQ18
SS
DQ12 CAS0 NC
CC
NC DQ28
Pin Name
DQ23
Presence Detect Pins
Pin No.
61
62
63
64
65
66
67
68
69
70
71
72
Pin Name
V
CC
DQ29
DQ30
DQ31
NC
PD2
PD3
PD4
PD5
PD6
PD7
V
SS
Pin No.
67 PD3
Pin Name
MSC23CV43257A
-60BS8
V
SS
NC69 PD5
MSC23CV43257A
-70BS8
NCNC11 PD1
NCNC66 PD2
V
SS
NCNC68 PD4
V
SS
NCNC70 PD6
NCNC71 PD7
347