參數(shù)資料
型號(hào): HY5DU12422BLTP
廠商: Hynix Semiconductor Inc.
英文描述: 512Mb DDR SDRAM
中文描述: 產(chǎn)品512Mb DDR SDRAM
文件頁(yè)數(shù): 34/37頁(yè)
文件大小: 396K
代理商: HY5DU12422BLTP
Rev. 0.1 / May 2004
34
HY5DU12422B(L)TP
HY5DU12822B(L)TP
HY5DU121622B(L)TP
-Continue
:
1. This calculation accounts for tDQSQ(max), the pulse width distortion of on-chip circuit and jitter.
2. Data sampled at the rising edges of the clock : A0~A12, BA0~BA1, CKE, /CS, /RAS, /CAS, /WE.
3. For command/address input slew rate >=1.0V/ns
4. For command/address input slew rate >=0.5V/ns and <1.0V/ns
This derating table is used to increase tIS/tIH in case where the input slew-rate is below 0.5V/ns.
Input Setup / Hold Slew-rate Derating Table.
Parameter
Symbol
DDR266A
Min
DDR266B
Min
DDR200
Min
UNIT
NOTE
Max
Max
Max
Input Setup Time
(fast slew rate)
Input Hold Time
(fast slew rate)
Input Setup Time
(slow slew rate)
Input Hold Time
(slow slew rate)
Input Pulse Width
Write DQS High Level Width
Write DQS Low Level Width
Clock to First Rising edge of
DQS-In
DQSfalling edge to CK
setup time
t
IS
0.9
-
0.9
-
1.1
-
ns
2,3,5,
6
t
IH
0.9
-
0.9
-
1.1
-
ns
t
IS
1.0
-
1.0
-
1.1
-
ns
2,4,5,
6
t
IH
1.0
-
1.0
-
1.1
-
ns
t
IPW
t
DQSH
t
DQSL
2.2
0.35
0.35
-
-
-
2.2
0.35
0.35
-
-
-
2.5
0.35
0.35
-
-
-
ns
CK
CK
6
t
DQSS
0.75
1.25
0.75
1.25
0.75
1.25
CK
tDSS
0.2
0.2
0.2
CK
DQS falling edge hold time
from CK
Data-In Setup Time to DQS-
In (DQ & DM)
Data-in Hold Time to DQS-In
(DQ & DM)
DQ & DM Input Pulse Width
Read DQS Preamble Time
Read DQS Postamble Time
tDSH
0.2
0.2
0.2
CK
t
DS
0.5
-
0.5
-
0.6
-
ns
6,7,
11,12,
13
t
DH
0.5
-
0.5
-
0.6
-
ns
t
DIPW
t
RPRE
t
RPST
t
WPRES
t
WPREH
t
WPST
t
MRD
1.75
0.9
0.4
0
0.25
0.4
2
-
1.75
0.9
0.4
0
0.25
0.4
2
-
2
-
ns
CK
CK
CK
CK
CK
CK
1.1
0.6
-
-
0.6
-
1.1
0.6
-
-
0.6
-
0.9
0.4
0
0.25
0.4
2
1.1
0.6
-
-
0.6
-
Write DQS Preamble Setup Time
Write DQS Preamble Hold Time
Write DQS Postamble Time
Mode Register Set Delay
Exit Self Refresh to Any
Execute Command
Average Periodic Refresh
Interval
t
XSC
200
-
200
-
200
-
CK
8
t
REFI
-
7.8
-
7.8
-
7.8
us
Input Setup / Hold Slew-rate
Delta tIS
Delta tIH
V/ns
ps
ps
0.5
0
0
0.4
+50
0
0.3
+100
0
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