參數(shù)資料
型號: UPD4564841
廠商: Elpida Memory, Inc.
英文描述: 64M-bit Synchronous DRAM 4-bank, LVTTL
中文描述: 6400位同步DRAM 4銀行,LVTTL
文件頁數(shù): 22/85頁
文件大小: 919K
代理商: UPD4564841
Data Sheet E0149N10
22
μ
PD4564441, 4564841, 4564163
7. Mode Register
WT = 1
1
2
4
8
R
R
R
R
1
0
0
0
0
0
1
2
3
4
5
7
6
8
9
10
11
JEDEC Standard Test Set (refresh counter test)
BL
WT
LTMODE
0
0
1
x
x
0
1
2
3
4
5
7
6
8
9
10
11
Burst Read and Single Write
(for Write Through Cache)
0
1
0
1
2
3
4
5
7
6
8
9
10
11
Use in future
V
V
V
V
V
V
1
V
1
x
x
x
0
1
2
3
4
5
7
6
8
9
10
11
Vender Specific
BL
WT
LTMODE
0
0
0
0
0
0
1
2
3
4
5
7
6
8
9
10
11
Mode Register Set
V = Valid
x = Don’t care
WT = 0
1
2
4
8
R
R
R
Full page
Bits2-0
000
001
010
011
100
101
110
111
Burst length
Sequential
Interleave
0
1
Wrap type
/CAS latency
R
R
2
3
R
R
R
R
Bits6-4
000
001
010
011
100
101
110
111
Latency
mode
0
0
12
13
x
x
12
13
12
13
x
x
12
13
0
0
12
13
Remark
R : Reserved
CLK
CKE
/CS
/RAS
/CAS
/WE
A0 - A13
Mode Register Set
Mode Register Set Timing
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