參數(shù)資料
型號: HY57V281620A
英文描述: 4 Banks x 2M x 16Bit Synchronous DRAM(4組x 2M x 16位同步動態(tài)RAM)
中文描述: 4銀行x 2米× 16位同步DRAM(4組× 2米× 16位同步動態(tài)RAM)的
文件頁數(shù): 8/13頁
文件大?。?/td> 111K
代理商: HY57V281620A
HY57V281620A
Rev. 1.0/Dec.99
8
AC CHARACTERISTICS II
Note :
1. A new command can be given tRRC after self refresh exit
Parameter
Symbol
-6
-K
-H
-8
-P
-S
-10
Unit
Note
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
RAS Cycle Time
Operation
tRC
60
-
65
-
65
-
68
-
70
-
70
-
80
-
ns
Auto Refresh
tRRC
60
-
65
-
65
-
68
-
70
-
70
-
96
-
ns
RAS to CAS Delay
tRCD
18
-
20
-
20
-
20
-
20
-
20
-
30
-
ns
RAS Active Time
tRAS
42
100K
45
100K
45
100K
48
100K
50
100K
50
100K
50
100K
ns
RAS Precharge Time
tRP
18
-
20
-
20
-
20
-
20
-
20
-
30
-
ns
RAS to RAS Bank Active Delay
tRRD
12
-
15
-
15
-
16
-
20
-
20
-
20
-
ns
CAS to CAS Delay
tCCD
1
-
1
-
1
-
1
-
1
-
1
-
1
-
CLK
Write Command to Data-In Delay
tWTL
0
-
0
-
0
-
0
-
0
-
0
-
0
-
CLK
Data-In to Precharge Command
tDPL
2
-
2
-
2
-
1
-
1
-
1
-
1
-
CLK
Data-In to Active Command
tDAL
5
-
5
-
5
-
4
-
3
-
3
-
4
-
CLK
DQM to Data-Out Hi-Z
tDQZ
2
-
2
-
2
-
2
-
2
-
2
-
2
-
CLK
DQM to Data-In Mask
tDQM
0
-
0
-
0
-
0
-
0
-
0
-
0
-
CLK
MRS to New Command
tMRD
2
-
2
-
2
-
2
-
2
-
2
-
2
-
CLK
Precharge to Data
Output Hi-Z
CAS Latency = 3
tPROZ3
3
-
3
-
3
-
3
-
3
-
3
-
3
-
CLK
CAS Latency = 2
tPROZ2
2
-
2
-
2
-
2
-
2
-
2
-
2
-
CLK
Power Down Exit Time
tPDE
1
-
1
-
1
-
1
-
1
-
1
-
1
-
CLK
Self Refresh Exit Time
tSRE
1
-
1
-
1
-
1
-
1
-
1
-
1
-
CLK
1
Refresh Time
tREF
-
64
-
64
-
64
-
64
-
64
-
64
-
64
ms
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