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¡ Semiconductor
MSC2343257A-xxBS8/DS8
¡ Semiconductor
MSC2343257A-xxBS8/DS8
4,194,304-Word ¥ 32-Bit DRAM MODULE : FAST PAGE MODE TYPE WITH EDO
1
DESCRIPTION
The Oki MSC2343257A-xxBS8/DS8 is a fully decoded 4,194,304-word ¥ 32-bit CMOS dynamic
random access memory composed of eight 16-Mb DRAMs (4M ¥ 4) in SOJ. The mounting of eight
DRAMs together with decoupling capacitors on a 72-pin glass epoxy SIMM 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 SIMM
MSC2343257A-xxBS8 : Gold tab
MSC2343257A-xxDS8 : Solder tab
• Single 5 V supply ±10% tolerance
• Input : TTL compatible
• Output : TTL compatible, 3-state, nonlatch
• 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
MSC2343257A-60BS8/DS8 5280 mW
MSC2343257A-70BS8/DS8 4840 mW
Access Time (Max.)
t
RAC
60 ns 30 ns 15 ns 110 ns
70 ns 35 ns 20 ns 130 ns
t
AA
t
CAC
Cycle Time
(Min.)
Operating (Max.)
Power Dissipation
Standby (Max.)
44 mW
101
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MSC2343257A-xxBS8/DS8 ¡ Semiconductor
PIN CONFIGURATION
MSC2343257A-xxBS8/DS8
(Unit : mm)
25.4 ±0.2
Typ.
10.16
3.18φ
Typ.
6.35
2.03 Typ.
* 1
107.95 ±0.2
101.19 Typ.3.38 ±0.2
1
72
3.7 Min.
R1.57
5.28 Max.
6.35 Typ.
1.27 ±0.1
6.35
1.04 Typ.
95.25
*1 The common size difference of the board width 12.5 mm of its height is
specified as ±0.2. The value above 12.5 mm is specified as ±0.5.
Pin No.
Pin Name
Pin No.
Pin Name
Pin No.
Pin Name
1VSS16 A4 31 A8
Pin No.
46 NC
2 DQ0 17 A5 32 A9 47 WE
3 DQ16 18 A6 33 NC 48 NC
4 DQ1 19 A10 34 RAS2 49 DQ8
5 DQ17 20 DQ4 35 NC 50 DQ24
6 DQ2 21 DQ20 36 NC 51 DQ9
7 DQ18 22 DQ5 37 NC 52 DQ25
8 DQ3 23 DQ21 38 NC 53 DQ10
9 DQ19 24 DQ6 39 V
10 V
CC
25 DQ22 40 CAS0 55 DQ11
SS
54 DQ26
11 NC 26 DQ7 41 CAS2 56 DQ27
12 A0 27 DQ23 42 CAS3 57 DQ12
13 A1 28 A7 43 CAS1 58 DQ28
14 A2 29 NC 44 RAS0 59 V
15 A3 30 Vcc 45 NC 60 DQ29
Pin Name
CC
+0.1
1.27
–0.08
Pin No.
61 DQ13
62 DQ30
63 DQ14
64 DQ31
65 DQ15
66 NC
67 PD1
68 PD2
69 PD3
70 PD4
71 NC
72 V
Pin Name
SS
Presence Detect Pins
Pin No.
67 PD1
68 PD2
69 PD3
70 PD4
102
Pin Name
-60BS8/DS8
V
SS
NC
NC
NC
MSC2343257AMSC2343257A
-70BS8/DS8
V
SS
NC
V
SS
NC