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参数资料
| 型号： | MSC23S4721E |
| 厂商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | 4,194,304 Word x 72 Bit SYNCHRONOUS DYNAMIC RAM MODULE (2BANK): |
| 中文描述： | 4194304字× 72位同步动态RAM模块（2BANK）： |
| 文件页数： | 8/11页 |
| 文件大小： | 76K |
| 代理商： | MSC23S4721E |
MSC23S4721E-8BS18 (98.07.17)
Page 8/11
AC CHARACTERISTIC
(VCC = 3.3
±
0.3V, Ta = 0 ~70°C)
Parameter
Symbol
NOTE 1, 2 .
Module Spec.
Min.
Max.
8
-
12
-
-
6
-
10
3
-
3
-
2
-
1
-
3
-
-
9
3
-
70
-
20
-
48
100,000
20
-
8
-
20
-
20
-
-
64
10
-
-
3
1
1
2
0
0
CL
3
Unit
Note
Clock Cycle Time
CL=3
CL=2
CL=3
CL=2
t
CC
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
ns
ns
Cycle
Cycle
Cycle
Cycle
Cycle
Cycle
Cycle
Access Time from Clock
t
AC
3, 4
3, 4
Clock "H" Pulse Time
Clock "L" Pulse Time
Input Setup Time(CLK, ADD, DIN)
Input Hold Time(CLK, ADD, DIN)
Output Low Impedance Time from Clock
Output High Impedance Time from Clock
Output Hold from Clock
/RAS Cycle Time
/RAS Precharge Time
/RAS Active Time
/RAS to /CAS Delay Time
Write Recovery Time
Write Command Input Time from Output
/RAS to /RAS Bank Active Delay Time
Refresh Time
Power-down Exit Set-up Time
Input Level Transition Time
/CAS to /CAS Delay Time (Min)
Clock Disable Time from CKE
Data Output High Impedance Time from DQM
Data Input Mask Time from DQMB
Data Input Time from Write Command
Data Output High Inpedance Time
Active Command Input Time from MODE
t
CH
t
CL
t
SI
t
HI
t
OLZ
t
OHZ
t
OH
t
RC
t
RP
t
RAS
t
RCD
t
WR
t
OWD
t
RRD
t
REF
t
PDE
t
T
I
CCD
I
CKE
I
DOZ
I
DOD
I
DWD
I
ROH
I
MRD
NOTES:
1) AC measurements assume that t
T
=1ns.
2) The reference level for timing of input signals is 1.4V.
3) This parameter is measured with a load circuit equivalent to 1 TTL load and 50pF
(R
Load
is 50ohm).
4) An access time is measured at 1.4V.
5) If t
T
is longer than 1ns, the reference level for timing of input signals are V
IH
and V
IL.
OUTPUT
50pF
OUTPUT LOAD
50
1.4v
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相关代理商/技术参数 |
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|---|---|
| MSC23S4721E-8BS18 | 制造商:OKI 制造商全称:OKI electronic componets 功能描述:4,194,304 Word x 72 Bit SYNCHRONOUS DYNAMIC RAM MODULE (2BANK): |
| MSC23T | 制造商:OKI 制造商全称:OKI electronic componets 功能描述:1,048,576-Word x 72-Bit DRAM MODULE : FAST PAGE MODE TYPE |
| MSC23V13258D | 制造商:OKI 制造商全称:OKI electronic componets 功能描述:1,048,576,Word X 32 Bit DYNAMIC RAM MODULE |
| MSC23V13258D-XXBS2 | 制造商:OKI 制造商全称:OKI electronic componets 功能描述:1,048,576,Word X 32 Bit DYNAMIC RAM MODULE |
| MSC23V23258D | 制造商:OKI 制造商全称:OKI electronic componets 功能描述:2,097,152 Word X 32 Bit DYNAMIC RAM MODULE |
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