46DR83200A Datasheet, PDF (23/48 Pages) Integrated Silicon Solution, Inc – 32Mx8, 16Mx16 DDR2 DRAM

IS43/46DR83200A, IS43/46DR16160A
7. Timings are specified with CK/CK differential slew rate of 2.0 V/ns. Timings are guaranteed for DQS signals with
a differential slew rate of 2.0 V/ns in differential strobe mode and a slew rate of 1 V/ns in single ended mode. See
Specific Notes on derating for other slew rate values.
8. Data setup and hold time derating (tds, tdh).
DtDS, DtDH derating values for DDR2-400, DDR2-553 (All units in ‘ps’; the note applies to the entire table)
DQS, DQS Differential Slew Rate
4.0 V/ns 3.0 V/ns 2.0 V/ns 1.8 V/ns 1.6 V/ns 1.4 V/ns 1.2 V/ns 1.0 V/ns 0.8 V/ns
DtDS DtDH DtDS DtDH DtDS DtDH DtDS DtDH DtDS DtDH DtDS DtDH DtDS DtDH DtDS DtDH DtDS DtDH
DQ 2.0 125 45 125 45 125 45 - - - - - - - - - - - -
Slew _1.5 83 21 83 21 83 21 95 33 -
-
-
-
-
-
-
-
-
-
rate _{1.0 0}
0
0
0
0
0 12 12 24 24 -
-
-
-
-
-
-
-
V/ns _{0.9 -}
- -11 -14 -11 -14 1 -2 13 10 25 22 -
-
-
-
-
-
0.8 -
-
-
- -25 -31 -13 -19 -1 -7 11 5 23 17 -
-
-
-
0.7 -
-
-
-
-
- -31 -42 -19 -30 -7 -18 5 -6 17 6 -
-
0.6 -
-
-
-
-
-
-
- -43 -59 -31 -47 -19 -35 -7 -23 5 -11
0.5 -
-
-
-
-
-
-
-
-
- -74 -89 -62 -77 -50 -65 -38 -53
0.4 -
-
-
-
-
-
-
-
-
-
-
- -127 -140 -115 -128 -103 -116
DDR2-400/533 tDS/tDH derating with differential data strobe
DtDS, DtDH derating values for DDR2-667, DDR2-800 (All units in ‘ps’; the note applies to the entire table)
DQS, DQS Differential Slew Rate
4.0 V/ns 3.0 V/ns 2.0 V/ns 1.8 V/ns 1.6 V/ns 1.4 V/ns 1.2 V/ns 1.0 V/ns 0.8 V/ns
DtDS DtDH DtDS DtDH DtDS DtDH DtDS DtDH DtDS DtDH DtDS DtDH DtDS DtDH DtDS DtDH DtDS DtDH
DQ 2.0 100 45 100 45 100 45 - - - - - - - - - - - -
Slew _{1.5 67 21 67 21 67 21 79 33 - - - - - - - - - -}
rate _{1.0 0 0 0 0 0 0 12 12 24 24 - - - - - - - -}
V/ns _{0.9 - - -5 -14 -5 -14 7 -2 19 10 31 22 - - - - - -}
0.8 - - - - -13 -31 -1 -19 11 -7 23 5 35 17 - - - -
0.7 - - - - - - -10 -42 2 -30 14 -18 26 -6 38 6 - -
0.6 - - - - - - - - -10 -59 2 -47 14 -35 26 -23 38 -11
0.5 - - - - - - - - - - -24 -89 -12 -77 0 -65 12 -53
0.4 - - - - - - - - - - - - -52 -140 -40 -128 -28 -116
DDR2-667/800 tDS/tDH derating with differential data strobe
Integrated Silicon Solution, Inc. — www.issi.com
23
Rev. D
08/16/2012