参数资料
型号: HYS72T128000EU-2.5-C2
厂商: QIMONDA AG
元件分类: DRAM
英文描述: 128M X 72 DDR DRAM MODULE, 0.4 ns, DMA240
封装: GREEN, UDIMM-240
文件页数: 10/59页
文件大小: 3071K
代理商: HYS72T128000EU-2.5-C2
HYS[64/72]T[128/256]0x0EU–[19F/1.9/25F/2.5/3S]–C2
Unbuffered DDR2 SDRAM Modules
Internet Data Sheet
Rev. 1.00, 2008-06
18
12032007-I9KE-FFWO
3.4
Component AC Timing Parameters
TABLE 14
DRAM Component Timing Parameter by Speed Grade - DDR2–1066
Parameter
Symbol
DDR2–1066
Unit
Note
Min.
Max.
DQ output access time from CK / CK
t
AC
–350
+350
ps
CAS to CAS command delay
t
CCD
2—
nCK
Average clock high pulse width
t
CH.AVG
0.48
0.52
t
CK.AVG
Average clock period
t
CK.AVG
1875
8000
ps
CKE minimum pulse width ( high and low pulse
width)
t
CKE
3—
nCK
Average clock low pulse width
t
CL.AVG
0.48
0.52
t
CK.AVG
Auto-Precharge write recovery + precharge time
t
DAL
WR +
t
nRP
—nCK
Minimum time clocks remain ON after CKE
asynchronously drops LOW
t
DELAY
t
IS + tCK .AVG + tIH
––
ns
DQ and DM input hold time
t
DH.BASE
75
––
ps
DQ and DM input pulse width for each input
t
DIPW
0.35
t
CK.AVG
DQS input high pulse width
t
DQSH
0.35
t
CK.AVG
DQS input low pulse width
t
DQSL
0.35
t
CK.AVG
DQS output access time from CK / CK
t
DQSCK
–325
+325
ps
DQS-DQ skew for DQS & associated DQ signals
t
DQSQ
—175
ps
DQS latching rising transition to associated clock
edges
t
DQSS
– 0.25
+ 0.25
t
CK.AVG
DQ and DM input setup time
t
DS.BASE
0––
ps
DQS falling edge hold time from CK
t
DSH
0.2
t
CK.AVG
DQS falling edge to CK setup time
t
DSS
0.2
t
CK.AVG
Four Activate Window for 1KB page size
products
t
FAW
35
ns
CK half pulse width
t
HP
Min(
t
CH.ABS,
t
CL.ABS)
__
ps
Data-out high-impedance time from CK / CK
t
HZ
t
AC.MAX
ps
Address and control input hold time
t
IH.BASE
200
ps
Control & address input pulse width for each
input
t
IPW
0.6
t
CK.AVG
Address and control input setup time
t
IS.BASE
125
ps
DQ low impedance time from CK/CK
t
LZ.DQ
-700
+700
ps
DQS/DQS low-impedance time from CK / CK
t
LZ.DQS
-400
+400
ps
MRS command to ODT update delay
t
MOD
012
ns
Mode register set command cycle time
t
MRD
2—
nCK
OCD drive mode output delay
t
OIT
012
ns
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