參數(shù)資料
型號(hào): HY5DU561622DT
廠商: Hynix Semiconductor Inc.
英文描述: 256Mb DDR SDRAM
中文描述: 256Mb的DDR SDRAM內(nèi)存
文件頁數(shù): 25/29頁
文件大小: 236K
代理商: HY5DU561622DT
Rev. 1.0 /Oct. 2004
25
HY5DU56422D(L)T
HY5DU56822D(L)T
HY5DU561622D(L)T
- Continue
Parameter
Symbol
DDR400B
DDR333
DDR266A
DDR266B
DDR200
UNIT
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Data-out high-impedance window
from CK,/CK
17
tHZ
-0.7
0.7
-0.7
0.7
-0.75
0.75
-0.75
0.75
-0.8
0.8
ns
Data-out low-impedance window
from CK, /CK
17
tLZ
-0.7
0.7
-0.7
0.7
-0.75
0.75
-0.75
0.75
-0.8
0.8
ns
Input Setup Time (fast slew
rate)
2,3,5,6
tIS
0.6
-
0.75
-
0.9
-
0.9
-
1.1
-
ns
Input Hold Time (fast slew
rate)
2,3,5,6
tIH
0.6
-
0.75
-
0.9
-
0.9
-
1.1
-
ns
Input Setup Time (slow slew
rate)
2,4,5,6
tIS
0.7
-
0.8
-
1.0
-
1.0
-
1.1
-
ns
Input Hold Time (slow slew
rate)
2,4,5,6
tIH
0.7
-
0.8
-
1.0
-
1.0
-
1.1
-
ns
Input Pulse Width
6
tIPW
2.2
-
2.2
-
2.2
-
2.2
-
2.5
-
ns
Write DQS High Level Width
tDQSH
0.35
-
0.35
-
0.35
-
0.35
-
0.35
-
tCK
Write DQS Low Level Width
tDQSL
0.35
-
0.35
-
0.35
-
0.35
-
0.35
-
tCK
Clock to First Rising edge of DQS-
In
tDQSS
0.72
1.25
0.75
1.25
0.75
1.25
0.75
1.25
0.75
1.25
tCK
DQS falling edge to CK setup time
tDSS
0.2
-
0.2
-
0.2
-
0.2
-
0.2
-
tCK
DQS falling edge hold time from
CK
tDSH
0.2
-
0.2
-
0.2
-
0.2
-
0.2
-
tCK
Data-in Setup Time to DQS-In (DQ
& DM)
6,7,11,12,13
tDS
0.4
-
0.45
-
0.5
-
0.5
-
0.6
-
ns
Data-in Hold Time to DQS-In (DQ
& DM)
6,7,11,12,13
tDH
0.4
-
0.45
-
0.5
-
0.5
-
0.6
-
ns
DQ & DM Input Pulse Width
tDIPW
1.75
-
1.75
-
1.75
-
1.75
-
2
-
ns
Read DQS Preamble Time
tRPRE
0.9
1.1
0.9
1.1
0.9
1.1
0.9
1.1
0.9
1.1
tCK
Read DQS Postamble Time
tRPST
0.4
0.6
0.4
0.6
0.4
0.6
0.4
0.6
0.4
0.6
tCK
Write DQS Preamble Setup Time
tWPRES
0
-
0
-
0
-
0
-
0
-
tCK
Write DQS Preamble Hold Time
tWPREH
0.25
-
0.25
-
0.25
-
0.25
-
0.25
-
tCK
Write DQS Postamble Time
tWPST
0.4
0.6
0.4
0.6
0.4
0.6
0.4
0.6
0.4
0.6
tCK
Mode Register Set Delay
tMRD
2
-
2
-
2
-
2
-
2
-
tCK
Exit Self Refresh to non-Read
command
tXSNR
75
-
75
-
75
-
75
-
80
-
ns
Exit Self Refresh to Read
command
8
tXSRD
200
-
200
-
200
-
200
-
200
-
tCK
Average Periodic Refresh Interval
tREFI
-
7.8
-
7.8
-
7.8
-
7.8
-
7.8
us
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