hys64t256020eu-2.5-c4 Qimonda, hys64t256020eu-2.5-c4 Datasheet - Page 17

• Manufacturer Part Number: hys64t256020eu-2.5-c4
• Description: 240-pin Unbuffered Ddr2 Sdram Modules
• Manufacturer: Qimonda

3.4
Rev. 0.50, 2008-07
07252008-KER5-31MS
Parameter
DQ output access time from CK / CK
CAS to CAS command delay
Average clock high pulse width
Average clock period
CKE minimum pulse width ( high and low
pulse width)
Average clock low pulse width
Auto-Precharge write recovery +
precharge time
Minimum time clocks remain ON after
CKE asynchronously drops LOW
DQ and DM input hold time
DQ and DM input pulse width for each
input
DQS output access time from CK / CK
DQS input high pulse width
DQS input low pulse width
DQS-DQ skew for DQS & associated DQ
signals
DQS latching rising transition to
associated clock edges
DQ and DM input setup time
DQS falling edge hold time from CK
DQS falling edge to CK setup time
Four Activate Window for 1KB page size
products
CK half pulse width
Data-out high-impedance time from CK /
CK
Address and control input hold time
Control & address input pulse width for
each input
Address and control input setup time
DQ low impedance time from CK/CK
Component AC Timing Parameters
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
AC
CCD
CH.AVG
CK.AVG
CKE
CL.AVG
DAL
DELAY
DH.BASE
DIPW
DQSCK
DQSH
DQSL
DQSQ
DQSS
DS.BASE
DSH
DSS
FAW
HP
HZ
IH.BASE
IPW
IS.BASE
LZ.DQ
DRAM Component Timing Parameter by Speed Grade - DDR2–800
DDR2–800
–400
2
0.48
2500
3
0.48
WR +
t
125
0.35
–350
0.35
0.35
—
– 0.25
50
0.2
0.2
35
Min(
t
—
250
0.6
175
2 x
Min.
IS
CL.ABS
17
+
t
t
AC.MIN
t
CH.ABS
CK .AVG
)
t
nRP
,
+
t
IH
+400
—
0.52
8000
—
0.52
—
––
––
—
+350
—
—
200
+ 0.25
––
—
—
—
__
t
—
—
—
t
Max.
AC.MAX
AC.MAX
Unbuffered DDR2 SDRAM Modules
HYS[64/72]T256020EU–2.5–C4
Advance Internet Data Sheet
Unit
ps
nCK
t
ps
nCK
t
nCK
ns
ps
t
ps
t
t
ps
t
ps
t
t
ns
ps
ps
ps
t
ps
ps
CK.AVG
CK.AVG
CK.AVG
CK.AVG
CK.AVG
CK.AVG
CK.AVG
CK.AVG
CK.AVG
TABLE 15
Note
7)
8)
9)10)
11)
9)10)
12)13)
14)18)19)
8)
15)
16)
17)18)19)
16)
16)
34)
20)
8)21)
22)24)
23)24)
8)21)
1)2)3)4)5)6)