Semiconductor
MSC23B1321D-xxBS2/DS2
1,048, 576- word x 32- bit DY NAMIC RAM MO DULE : FAST PAGE MODE TY P E
This vers ion: Feb. 23. 199
9
DESCRIPTION
The MSC23B1321D-xxBS2/DS2 is a fully decoded, 1,048,576-word x 32-bit CMOS dynamic random access
m emory modul e com posed of two 16Mb DRAMs in SO J packages m ounted with f our decoupli ng capacitors on a
72-pin glass epoxy single-inline package. This module supports any application where high density and large
capacity of stor age memory ar e r equired.
FEATURES
· 1, 048,576-word x 32- bit or ganizat ion
· 72-pin socket insertable m odule
MSC23B1321D- xxBS2 : Gold tab
MSC23B1321D- xxDS2 : S older t ab
· Singl e +5V supply ± 10% tol er anc e
· I nput : T TL compatible
· Output : TTL compatible, 3-state
· Refresh : 1024cycles/16ms
· / CA S befor e /RAS refr esh, hidden refresh, /RAS only refresh capability
· F ast page mode capability
PRODUCT FAMILY
Access Time (Max. ) Power Dissipat i on
Family tRAC tAA tCAC
Cycle
Time
(Min.) Operating(Max.) Standby(Max.)
MSC23B1321D-60BS2/DS2 60ns 30ns 15ns 110ns 1375mW
MSC23B1321D-70BS2/DS2 70ns 35ns 20ns 130ns 1265mW 11mW
Semiconductor MSC23B1321D
MODULE OUTLINE
172
R1.57
6.35 1.04Typ.1.27±0.1
95.25
2.03Typ.
6.35Typ.
Typ.
6.35
Typ.
10.16
(
3.18
19.0±0.2
101.19Typ.
107.95±0.2*1
3.38Typ.
5.7Min.
5.28Max.
+0.1
-0.08
1.27
(Un i t : m m)
MSC23B1321D-xxBS2/DS2
*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.
Semiconductor MSC23B1321D
PIN C ONFIGURATI ON
Pin No. Pin Na me Pin No. Pin Na me Pin No. Pin Na me Pin No. Pin Na me
1V
SS 19 NC 37 NC 55 DQ11
2 DQ0 20 DQ4 38 NC 56 DQ27
3 DQ16 21 DQ20 39 VSS 57 DQ12
4 DQ1 22 DQ5 40 /CAS0 58 DQ28
5 DQ17 23 DQ21 41 /CAS2 59 VCC
6 DQ2 24 DQ6 42 /CAS3 60 DQ29
7 DQ18 25 DQ22 43 /CAS1 61 DQ13
8 DQ3 26 DQ7 44 /RAS0 62 DQ30
9 DQ19 27 DQ23 45 NC 63 DQ14
10 VCC 28 A7 46 NC 64 DQ31
11 NC 29 NC 47 /WE 65 DQ15
12 A0 30 VCC 48 NC 66 NC
13 A1 31 A8 49 DQ8 67 PD1
14 A2 32 A9 50 DQ24 68 PD2
15 A3 33 NC 51 DQ9 69 PD3
16 A4 34 /RAS2 52 DQ25 70 PD4
17 A5 35 NC 53 DQ10 71 NC
18 A6 36 NC 54 DQ26 72 VSS
Presence Det ect P ins
Pin No. Pin Na me MSC23B1321D
-60BS2/DS2 MSC23B1321D
-70BS2/DS2
67 PD1 VSS VSS
68 PD2 VSS VSS
69 PD3 NC VSS
70 PD4 NC NC
Semiconductor MSC23B1321D
BLOCK DIAGRAM
/WE
/CAS1
/CAS0
A0-A9
/CAS3
/CAS2
DQ0A0-A9 DQ1
DQ3
DQ2
DQ4
DQ5
/RAS
/LCAS
/UCAS
DQ6
DQ1
DQ2
DQ3
VCC
VSS
C1-C4
DQ8
VSS
/WE
/OE
VCC
DQ4
DQ5
DQ6
DQ7
DQ7
DQ8DQ9
DQ11
DQ10
DQ12
DQ13
DQ14
DQ9
DQ10
DQ11
DQ16
DQ12
DQ13
DQ14
DQ15
DQ15
/RAS0
/RAS2
DQ16A0-A9 DQ1
DQ3
DQ2
DQ4
DQ5
/RAS
/LCAS
/UCAS
DQ6
DQ17
DQ18
DQ19
DQ8
VSS
/WE
/OE
VCC
DQ20
DQ21
DQ22
DQ23
DQ7
DQ24DQ9
DQ11
DQ10
DQ12
DQ13
DQ14
DQ25
DQ26
DQ27
DQ16
DQ28
DQ29
DQ30
DQ31
DQ15
Semiconductor MSC23B1321D
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings ( Ta = 25°C )
Parameter Symbol Rating Unit
Volt age on Any Pin Relat i ve to VSS VIN, VOUT -1.0 to +7.0 V
Vol t age on VCC Supply Relative to V SS VCC -1.0 to +7.0 V
Short Ci r cuit Output Current IOS 50 mA
Power Dissipation PD2W
Operating Temperature TOPR 0 to +70 °C
Storage Temperature TSTG - 40 to +125 °C
Recommen ded O perating Conditions ( Ta = 0°C to +70°C )
Parameter Symbol Min. Typ. Max. Unit
VCC 4.5 5.0 5.5 V
Power Suppl y Volt age VSS 000V
Input High Volt age VIH 2.4 - 6.5 V
Input Low Vol tage VIL -1.0 - 0.8 V
Capacitance ( VCC = 5V ± 10%, Ta = 25°C, f = 1 MHz )
Parameter Symbol Typ. Max. Unit
Input Capacitance (A0 - A9) CIN1 -16pF
Input Capaci t ance (/WE) CIN2 -20pF
Input Capaci t ance (/RAS0, /RAS2) CIN3 -13pF
Input Capaci t ance (/CAS0- /CAS3) CIN4 -13pF
I/O Capacitance (DQ0 - DQ31) CDQ -13pF
Note: Capaci tance measured wi th Boonton M eter.
Semiconductor MSC23B1321D
DC Characteristics (VCC = 5V ± 10%, Ta = 0°C to +70°C )
MSC23B1321D
-60BS2/DS2 MSC23B1321D
-70BS2/DS2
Parameter Symbo
lCondition
Min. Max. Min. Max.
Unit Note
Input Leakage Current ILI
0V ≤ VIN ≤ 6.5V:
All ot her pins not
under test = 0V -20 20 -20 20 µA
Out put Leakage Current ILO Data out is disabl e
0V ≤ VOUT ≤ 5.5V -10 10 -10 10 µA
Out put Hi gh Volt age VOH IOH = -5.0mA 2.4 VCC 2.4 VCC V
Out put Low Vol tage VOL IOL = 4.2mA 0 0.4 0 0.4 V
Average Power Suppl y Curr ent
(Operating) ICC1
/RAS cy c lin g ,
/CAS cy c lin g ,
tRC = min. - 250 - 230 mA 1, 2
TTL-4-4mA1
Power supply current
(Standby) ICC2 / RAS = VIH
/CAS = VIH MOS - 2 - 2 mA 1
Average Power Suppl y Curr ent
(/RAS only r efresh) ICC3
/RAS cy c lin g ,
/CAS = VIH,
tRC = min. - 250 - 230 mA 1, 2
Average Power Suppl y Curr ent
(/CAS before /RAS refresh) ICC6 tRC = mi n. - 250 - 230 m A 1, 2
Average Power Suppl y Curr ent
(Fast Page Mode) ICC7
/RAS = VIL,
/CAS cy c lin g ,
tPC = m i n. - 250 - 230 mA 1, 3
Notes: 1. ICC is dependent on output loading and cycles rates. Specified values are obtained with the output open.
2. Address can be changed once or less whil e /RAS = VIL.
3. Address can be changed once or less whil e /CAS = VIH.
Semiconductor MSC23B1321D
AC Characteristics (1/2) (VCC = 5V ± 10%, Ta = 0°C to +70°C ) Note: 1, 2, 3
MSC23B1321D
-60BS2/DS2 MSC23B1321D
-70BS2/DS2
Parameter Symbol
Min. Max. Min. Max.
Unit Note
Random Read or Wr ite Cycle Time tRC 110 - 130 - ns
Fast Page Mode Cycle Time tPC 40 - 45 - ns
Access Time from /RAS tRAC - 60 - 70 ns 4, 5, 6
Access Time from /CAS tCAC - 15 - 20 ns 4, 5
Access Time from Colum n Address tAA - 30 - 35 ns 4, 6
Access Time from /CAS Precharge tCPA - 35 - 40 ns 4
Out put Low Impedance Tim e from /CAS t CLZ 0-0-ns4
/CAS to Data Output Buffer Turn-off Delay Time tOFF 0 15 0 20 ns 7
Transi tion Time tT3 50 3 50 ns 3
Refr esh Period tREF -16-16ms
/RAS Pr echarge Time tRP 40 - 50 - ns
/RAS Pulse Wi d th tRAS 60 10K 70 10K ns
/RAS Pulse Widt h ( Fast Page Mode) tRASP 60 100K 70 100K ns
/RAS Hold Time tRSH 15 - 20 - ns
/CAS Precharge Time (Fast Page Mode) tCP 10 - 10 - ns
/CAS Pulse Wi d th tCAS 15 10K 20 10K ns
/CAS Hold Time tCSH 60 - 70 - ns
/CAS t o /RAS Prechar ge Time tCRP 5-5-ns
/RAS Hold Time from /CAS Precharge tRHCP 35 - 40 - ns
/RAS to /CAS Delay Time tRCD 20 45 20 50 ns 5
/RAS to Column Address Delay Time tRAD 15 30 15 35 ns 6
Row Address Set-up Time tASR 0-0-ns
Row Address Hol d Ti me tRAH 10 - 10 - ns
Column Address Set-up Time tASC 0-0-ns
Col u mn Add ress Hol d Ti me tCAH 10 - 15 - ns
Column Address to /RAS Lead Time tRAL 30 - 35 - ns
Read Com mand Set-up Tim e tRCS 0-0-ns
Read Com mand Hold Time tRCH 0-0-ns8
Read Com mand Hold Time referenced t o / RAS tRRH 0-0-ns8
Semiconductor MSC23B1321D
AC Characteristics (2/2) (VCC = 5V ± 10%, Ta = 0°C to +70°C ) Note: 1, 2, 3
MSC23B1321D
-60BS2/DS2 MSC23B1321D
-70BS2/DS2
Parameter Symbol
Min. Max. Min. Max.
Unit Note
W r ite Command Set-up Time tWCS 0-0-ns
W r ite Command Hold Time t WCH 10 - 15 - ns
W r ite Command Pulse Wi dt h tWP 10 - 10 - ns
W r ite Command to / RAS Lead Ti me t RWL 15 - 20 - ns
W r ite Command to / CAS Lead Ti me t CWL 15 - 20 - ns
Data-i n Set-up Time tDS 0-0-ns
Dat a-i n Ho ld Time tDH 10 - 15 - ns
/CAS Active Delay Time from /RAS Precharge tRPC 5-5-ns
/RAS to /CAS Set-up Time
(/ CAS b efore /RAS) tCSR 10 - 10 - ns
/RAS to /CAS Hold Tim e
(/ CAS b efore /RAS) tCHR 10 - 10 - ns
Semiconductor MSC23B1321D
Notes: 1. A start- up delay of 200µs is required after power-up, followed by a mi nimum of eight ini tializ ation cycles
(/RA S only refr esh or / CA S befor e /RAS refr esh) before pr oper devi c e oper ation is achieved.
2. The AC c har ac teri stics assumes tT = 5ns.
3. VIH(Min. ) and VIL(Max .) are ref erence l ev els for measuring input timi ng signals. Transiti on ti me (tT) are
m easured bet ween VIH and VIL.
4. This parameter i s measured wi th a load c ircuit equivalent to 2TT L loads and 100pF.
5. Operation within the tRCD(M ax. ) li mit ensures that t RAC(Max . ) can be met.
tRCD(Max.) is s pecified as a reference point only . If tRCD is greater than the s pecified tRCD(Max.) limit, then
the acc ess ti me is controlled by tCAC.
6. Operation within the tRAD(Max.) li mit ensures that tRAC(Max . ) can be met.
tRAD(Max.) is s pecified as a reference point only. If tRAD is greater than the specified tRAD(Max.) limit, the n
the acc ess ti me is controlled by tAA.
7. tOFF(Max.) define the time at w hich the output achieves the open circuit condition and are not referenced
to out put voltage levels.
8. tRCH or tRRH must be satisfied for a read cycle.
