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參數(shù)資料
| 型號： | MSM5416258A |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | 262,144-Word×16-Bit DYNAMIC RAM(256K字×16位動(dòng)態(tài)RAM) |
| 中文描述： | 262,144字× 16位動(dòng)態(tài)隨機(jī)存儲(chǔ)器（256K字× 16位動(dòng)態(tài)內(nèi)存） |
| 文件頁數(shù)： | 6/21頁 |
| 文件大?。?/td> | 263K |
| 代理商： | MSM5416258A |
6/21
Semiconductor
MSM5416258A
AC Characteristics (1/2)
Random Read or Write Cycle Time
Read Modify Write Cycle Time
Hyper Page Mode Cycle Time
Parameter
—
—
—
—
30
9
16
9
18
—
55
75
13
35
—
—
—
—
—
3
—
—
—
—
40
10
22
10
24
—
80
115
15
55
—
—
—
—
—
3
(V
CC
= 5 V
±
10%, Ta = 0°C to 70°C)
Fast
Page Mode Read Modify Write Cycle Time
Access Time from
RAS
Access Time from
CAS
Access Time from Column Address
Access Time from
OE
Access Time from
CAS
Precharge
Data Hold After
CAS
Low
Output Buffer Turn-off Delay Time
OE
to Data Output Buffer
Turn-off Delay Time
8
3
8
3
8
3
8
3
Transition Time
Refresh Period
35
8
2
35
8
2
RAS
Precharge Time
RAS
Pulse Width
RAS
Pulse Width (Fast Page Mode)
RAS
Hold Time
RAS
Hold Time Reference to
OE
CAS
Precharge Time (Fast Page Mode)
CAS
Pulse Width
—
18
30
30
7
7
4
5
25
5
11
8
0
6
0
5
22
18
—
30
40
40
8
8
5
6
40
5
15
12
0
8
0
5
30
22
10,000
100,000
—
—
—
10,000
—
—
22
15
—
—
—
—
—
—
10,000
100,000
—
—
—
10,000
—
—
30
18
—
—
—
—
—
—
Row Address Set-up Time
Row Address Hold Time
Column Address Set-up Time
Column Address Hold Time
Column Address Hold Time from
RAS
Column Address to
RAS
Lead Time
CAS
Hold Time
CAS
to
RAS
Precharge Time
RAS
to
CAS
Delay Time
RAS
to Column Address Delay Time
—
—
Note
7, 12, 13
7, 12
7, 13
7, 12
17
8
8
12
13
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Symbol
t
RC
t
RWC
t
HPC
t
PRWC
t
RAC
t
CAC
t
AA
t
OEA
t
CPA
t
COH
t
OFF
t
OEZ
t
T
t
RP
t
RAS
t
RASP
t
RSH
t
ROH
t
CP
t
CAS
t
CSH
t
CRP
t
RCD
t
RAD
t
ASR
t
RAH
t
ASC
t
CAH
t
AR
t
RAL
t
REF
Max.
Min.
Max.
Min.
MSM5416258A
-40
MSM5416258A
-30
MSM5416258A
-35
Max.
—
—
—
—
35
10
19
10
21
—
8
8
35
8
—
10,000
100,000
—
—
—
10,000
—
—
26
16
—
—
—
—
—
—
Min.
60
85
13
45
—
—
—
—
—
3
3
3
2
20
35
35
8
8
4
5
30
5
13
10
0
7
0
5
25
20
—
RAS
to Data Output Buffer Turn-off
Delay Time
8
3
8
3
8
ns
t
REZ
8
3
WE
to Data Output Buffer Turn-off
Delay Time
8
3
8
3
8
ns
t
WEZ
8
3
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
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