SEP01G72J2BF1SA-37R Datasheet, PDF (9/14 Pages) List of Unclassifed Manufacturers – 1GB DDR2 . SDRAM registered DIMM

Data Sheet
Rev.1.0 20.11.2010
DDR2 SDRAM COMPONENT ELECTRICAL CHARACTERISTICS AND RECOMMENDED
AC OPERATING CONDITIONS
(0°C ≤ TCASE ≤ + 85°C; VDDQ = +1.8V ± 0.1V, VDD = +1.8V ± 0.1V)
AC CHARACTERISTICS
PARAMETER
Clock cycle time CL = 6
CL = 5
CL = 4
CL = 3
CK high-level width
CK low-level width
Half clock period
Access window (output) of
DQS from CK/CK#
Data-out high-impedance
window from CK/CK#
Data-out low-impedance
window from CK/CK#
DQ and DM input setup time
relative to DQS
5300-555
SYMBOL MIN
MIN
t_CK (6)
t_CK (5)
t_CK (4)
t_CK (3)
t_CH
t_CL
t_HP
-
3.0
3.75
5.0
0.48
0.48
min
(tCH, tCL)
-
8.0
8.0
8.0
0.52
0.52
t_AC
-0.45 +0.45
t_HZ
+0.45
(= tAC
max)
t_LZ
-0.45 +0.45
(= tAC min)
(= tAC
max)
t_DS
0.10
DQ and DM input hold time
relative to DQS
DQ and DM input pulse width
( for each input )
Data hold skew factor
DQ-DQS hold, DQS to first DQ
to go non-valid, per access
Data valid output window
DQS input high pulse width
DQS input low pulse width
DQS falling edge to CK rising
- setup time
DQS falling edge from CK
rising - hold time
DQS –DQ skew, DQS to last
DQ valid, per group, per
access
DQS read preamble
DQS read postamble
DQS write preamble
DQS write preamble setup
time
DQS write postamble
Positive DQS latching edge to
associated clock edge
Write command to first DQS
latching transition
Address and control input
pulse width ( for each input )
Address and control input
setup time
t_DH
t_DIPW
t_QHS
t_QH
t_DVW
t_DQSH
t_DQSL
t_DSS
t_DSH
t_DQSQ
t_RPRE
t_RPST
t_WPRE
t_WPRES
t_WPST
t_DQSS
t_IPW
t_IS(base)
0.175
0.35
tHP - tQHS
tQH - tDQSQ
0.35
0.35
0.2
0.2
0.9
0.4
0.35
0
0.4
-0.25
WL-
tDQSS
0.6
0.2
0.24
1.1
0.6
0.6
+0.25
WL+
tDQSS
4200-444
MIN MAX
-
-
3.75
8.0
3.75
8.0
5.0
8.0
0.45 0.55
0.45 0.55
min
(tCH, tCL)
-0.50 +0.50
-0.50
(= tAC min)
0.10
+0.50
(= tAC
max)
+0.50
(= tAC
max)
0.35
0.35
0.4
tHP - tQHS
tQH - tDQSQ
0.35
0.35
0.2
0.2
0.30
0.9
1.1
0.4
0.6
0.35
0
0.4
0.6
- 0.25 + 0.25
WL-
tDQSS
0.6
WL+
tDQSS
0.5
Unit
ns
ns
ns
ns
tCK
tCK
ps
ns
ns
ns
ns
ns
tCK
ns
ns
ns
tCK
tCK
tCK
tCK
ns
tCK
tCK
tCK
ns
tCK
tCK
tCK
tCK
ns
Swissbit AG
Industriestrasse 4
CH – 9552 Bronschhofen
Fon: [phone]
Fax: [phone]
www.swissbit.com
eMail: [e-mail]
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