參數(shù)資料
型號(hào): HY5V62CF-S
英文描述: x32 SDRAM
中文描述: X32號(hào),內(nèi)存
文件頁(yè)數(shù): 8/11頁(yè)
文件大?。?/td> 201K
代理商: HY5V62CF-S
Rev. 0.4/Nov. 01
9
HY5V62CF
AC CHARACTERISTICS II
(AC operating conditions unless otherwise noted)
Note :
1. A new command can be given tRRC after self refresh exit
Parameter
Symbol
-7
-S
Unit
Note
Min
Max
Min
Max
RAS cycle time
Operation
tRC
62
-
70
-
ns
Auto Refresh
tRRC
62
-
70
-
ns
RAS to CAS delay
tRCD
20
-
20
-
ns
RAS active time
tRAS
42
120K
50
120K
ns
RAS precharge time
tRP
20
-
20
-
ns
RAS to RAS bank active delay
tRRD
14
-
20
-
CLK
CAS to CAS delay
tCCD
1
-
1
-
CLK
Write command to data-in delay
tWTL
0
-
0
-
CLK
Data-in to precharge command
tDPL
1
-
1
-
CLK
Data-in to active command
tDAL
4
-
3
-
CLK
DQM to data-out Hi-Z
tDQZ
2
-
2
-
CLK
DQM to data-in mask
tDQM
0
-
0
-
CLK
MRS to new command
tMRD
1
-
1
-
CLK
Precharge to data
output Hi-Z
CAS Latency = 3
tPROZ3
3
-
3
-
CLK
CAS Latency = 2
tPROZ2
2
-
2
-
CLK
Power down exit time
tPDE
1
-
1
-
CLK
Self refresh exit time
tSRE
1
-
1
-
CLK
1
Refresh Time
tREF
-
64
-
64
ms
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