參數(shù)資料
型號: μPD4564323
廠商: NEC Corp.
英文描述: 64M-bit Synchronous DRAM(64M 同步動態(tài)RAM)
中文描述: 6400位同步DRAM(6400同步動態(tài)RAM)的
文件頁數(shù): 20/82頁
文件大?。?/td> 659K
代理商: ΜPD4564323
20
μ
PD4564323
Preliminary Data Sheet
7. Mode Register
WT = 1
1
2
4
8
R
R
R
R
1
0
0
0
0
A0
A1
A2
A3
A4
A5
A7
A6
A8
A9
A10
BA0
JEDEC Standard Test Set (refresh counter test)
BL
WT
LTMODE
0
0
1
x
x
A0
A1
A2
A3
A4
A5
A7
A6
A8
A9
A10
BA0
Burst Read and Single Write
(for Write Through Cache)
0
1
A0
A1
A2
A3
A4
A5
A7
A6
A8
A9
A10
BA0
Use in future
V
V
V
V
V
V
1
V
1
x
x
x
A0
A1
A2
A3
A4
A5
A7
A6
A8
A9
A10
BA0
Vender Specific
BL
WT
LTMODE
0
0
0
0
0
A0
A1
A2
A3
A4
A5
A7
A6
A8
A9
A10
BA0
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
BA1
x
BA1
BA1
x
BA1
0
BA1
Remark
R : Reserved
Mode Register Write Timing
CLK
CKE
/CS
/RAS
/CAS
/WE
A0 - A10,
BA0, BA1
Mode Register Write
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