參數(shù)資料
型號(hào): MB98B7515
廠商: Fujitsu Limited
英文描述: Dynamic Random Access Memory Card( 128M 動(dòng)態(tài)RAM)
中文描述: 動(dòng)態(tài)隨機(jī)存取記憶卡(128M的動(dòng)態(tài)內(nèi)存)
文件頁(yè)數(shù): 6/26頁(yè)
文件大?。?/td> 418K
代理商: MB98B7515
6
MB98B7515/7516/7517/7518
I
FUNCTIONAL TRUTH TABLE
1. Read/Write Modes
L
2. RAS Only Refresh Mode
3. CAS before RAS Refresh Mode
RAS
0
RAS
1
RAS
2
RAS
3
CAS
0, 1
CAS
2, 3
Active memory
DQ
H
0
to DQ
17
DQ
18
to DQ
35
H
H
H
H
H
H
High-Z
High-Z
L
H
H
H
L
H
D
0
to D
3
, M
0, 1
I/O data
High-Z
H
L
H
H
L
H
D
8
to D
11
, M
4, 5
I/O data
High-Z
H
H
L
H
H
L
D
L
4
to D
7
, M
2, 3
High-Z
I/O data
H
H
H
L
H
L
D
12
to D
15
, M
6, 7
High-Z
I/O data
L
H
L
H
L
L
D
0
to D
7
, M
0
to M
3
L
I/O data
L
L
X
X
X
X
Prohibited operation
H
L
D
0
to D
7
, M
0
to M
3
I/O data
X
X
L
L
X
X
Prohibited operation
RAS
0
RAS
1
RAS
2
RAS
3
CAS
0, 1
CAS
2, 3
Active memory
DQ
0
to DQ
17
DQ
18
to DQ
35
L
H
H
H
H
H
D
0
to D
3
, M
0
,
1
High-Z
H
L
H
H
H
H
D
8
to D
11
, M
4
,
5
High-Z
H
H
L
H
H
H
D
4
to D
7
, M
2
,
3
High-Z
H
H
H
L
H
H
D
12
to D
15
, M
6
,
7
High-Z
L
H
L
H
H
H
D
0
to D
7
, M
0
to M
3
High-Z
L
L
X
X
X
X
Prohibited operation
H
L
H
L
H
H
D
8
to D
15
, M
4
to M
7
High-Z
X
X
L
L
X
X
Prohibited operation
RAS
0
RAS
1
RAS
2
RAS
3
CAS
0, 1
CAS
2, 3
Active memory
DQ
0
to DQ
17
DQ
18
to DQ
35
L
H
H
H
L
H
D
0
to D
3
, M
0
,
1
High-Z
H
L
H
H
L
H
D
8
to D
11
, M
4
,
5
High-Z
H
H
L
H
H
L
D
4
to D
7
, M
2
,
3
High-Z
H
H
H
L
H
L
D
12
to D
15
, M
6
,
7
High-Z
L
H
L
H
L
L
D
0
to D
7
, M
0
to M
3
High-Z
L
L
X
X
X
X
Prohibited operation
H
L
H
L
L
L
D
8
to D
15
, M
4
to M
7
High-Z
X
X
L
L
X
X
Prohibited operation
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