1Gb: x4, x8, x16 DDR2 SDRAM
Input Slew Rate Derating
Table 28: DDR2-400/533 Setup and Hold Time Derating Values (tIS and tIH)
CK, CK# Differential Slew Rate
2.0 V/ns 1.5 V/ns 1.0 V/ns
Command/Address Slew Rate (V/ns)
ΔtIS
ΔtIH
+94
ΔtIS
ΔtIH
+124
+119
+113
+105
+75
ΔtIS
ΔtIH
+154
+149
+143
+135
+105
+81
Units
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.25
0.2
0.15
0.1
+187
+179
+167
+150
+125
+83
+217
+209
+197
+180
+155
+113
+30
+247
+239
+227
+210
+185
+143
+60
+89
+83
+75
+45
+21
+51
0
0
+30
+60
–11
–14
+19
+16
+49
+46
–25
–31
+5
–1
+35
+29
–43
–54
–13
–24
+17
+6
–67
–83
–37
–53
–7
–23
–110
–175
–285
–350
–525
–800
–1,450
–125
–188
–292
–375
–500
–708
–1,125
–80
–95
–50
–65
–145
–255
–320
–495
–770
–1,420
–158
–262
–345
–470
–678
–1,095
–115
–225
–290
–465
–740
–1,390
–128
–232
–315
–440
–648
–1,065
PDF: 09005aef821ae8bf
1GbDDR2.pdf – Rev. T 02/10 EN
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