This version: Mar. 3. 1999
Semiconductor
MSC23B2321D-xxBS4/DS4
2,097,152-word x 32-bit DYNAMIC RAM MODULE : FAST PAGE MODE TYPE
DESCRIPTION
The MSC23B2321D-xxBS4/DS4 is a fully decoded, 2,097,152-word x 32-bit CMOS dynamic random access memory module composed of four 16Mb DRAMs in SOJ packages mounted with eight decoupling capacitors on a 72-pin glass epoxy single-inline package. This module supports any application where high density and large capacity of storage memory are required.
FEATURES
·2,097,152-word x 32-bit organization
·72-pin Single Inline Memory Module MSC23B2321D-xxBS4 : Gold tab MSC23B2321D-xxDS4 : Solder tab
·Single +5V supply ± 10% tolerance
· Input |
: TTL compatible |
· Output |
: TTL compatible, 3-state |
· Refresh |
: 1024cycles/16ms |
·/CAS before /RAS refresh, hidden refresh, /RAS only refresh capability
·Fast page mode capability
PRODUCT FAMILY
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Access Time (Max.) |
Cycle |
Power Dissipation |
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Family |
Time |
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tRAC |
tAA |
tCAC |
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(Min.) |
Operating (Max.) |
Standby (Max.) |
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MSC23B2321D-60BS4/DS4 |
60ns |
30ns |
15ns |
110ns |
1430mW |
22mW |
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MSC23B2321D-70BS4/DS4 |
70ns |
35ns |
20ns |
130ns |
1320mW |
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Semiconductor |
MSC23B2321D |
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MODULE OUTLINE
MSC23B2321D-xxBS4/DS4
3.38Typ. |
3.18 |
19.0±0.2 |
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(Unit : mm) |
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107.95±0.2*1 |
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9.3Max. |
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101.19Typ. |
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Typ. |
Typ. |
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5.7Min. |
10.16 |
6.35 |
1 |
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72 |
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2.03Typ. |
1.27±0.1 |
R1.57 |
+0.1 |
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1.04Typ. |
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6.35Typ. |
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6.35 |
1.27 -0.08 |
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95.25 |
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*1 The common size difference of the board width 12.5mm of its height is specified as ±0.2. The value above 12.5mm is specified as ±0.5.
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Semiconductor |
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MSC23B2321D |
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PIN CONFIGURATION |
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Pin No. |
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Pin Name |
Pin No. |
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Pin Name |
Pin No. |
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Pin Name |
Pin No. |
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Pin Name |
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1 |
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VSS |
19 |
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NC |
37 |
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NC |
55 |
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DQ11 |
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2 |
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DQ0 |
20 |
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DQ4 |
38 |
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NC |
56 |
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DQ27 |
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3 |
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DQ16 |
21 |
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DQ20 |
39 |
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VSS |
57 |
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DQ12 |
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4 |
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DQ1 |
22 |
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DQ5 |
40 |
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/CAS0 |
58 |
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DQ28 |
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5 |
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DQ17 |
23 |
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DQ21 |
41 |
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/CAS2 |
59 |
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VCC |
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6 |
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DQ2 |
24 |
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DQ6 |
42 |
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/CAS3 |
60 |
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DQ29 |
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7 |
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DQ18 |
25 |
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DQ22 |
43 |
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/CAS1 |
61 |
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DQ13 |
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8 |
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DQ3 |
26 |
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DQ7 |
44 |
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/RAS0 |
62 |
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DQ30 |
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9 |
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DQ19 |
27 |
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DQ23 |
45 |
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/RAS1 |
63 |
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DQ14 |
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10 |
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VCC |
28 |
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A7 |
46 |
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NC |
64 |
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DQ31 |
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11 |
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NC |
29 |
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NC |
47 |
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/WE |
65 |
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DQ15 |
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12 |
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A0 |
30 |
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VCC |
48 |
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NC |
66 |
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NC |
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13 |
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A1 |
31 |
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A8 |
49 |
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DQ8 |
67 |
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PD1 |
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14 |
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A2 |
32 |
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A9 |
50 |
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DQ24 |
68 |
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PD2 |
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15 |
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A3 |
33 |
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/RAS3 |
51 |
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DQ9 |
69 |
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PD3 |
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16 |
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A4 |
34 |
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/RAS2 |
52 |
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DQ25 |
70 |
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PD4 |
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17 |
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A5 |
35 |
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NC |
53 |
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DQ10 |
71 |
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NC |
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18 |
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A6 |
36 |
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NC |
54 |
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DQ26 |
72 |
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VSS |
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Presence Detect Pins |
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Pin No. |
Pin Name |
MSC23B2321D |
MSC23B2321D |
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-60BS4/DS4 |
-70BS4/DS4 |
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67 |
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PD1 |
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NC |
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NC |
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68 |
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PD2 |
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NC |
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NC |
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69 |
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PD3 |
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NC |
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VSS |
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70 |
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PD4 |
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NC |
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NC |
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