1Gb: x4, x8, x16 DDR2 SDRAM
Input Slew Rate Derating
Table 29: DDR2-667/800/1066 Setup and Hold Time Derating Values (tIS and tIH)
Command/
Address Slew
Rate (V/ns)
CK, CK# Differential Slew Rate
1.5 V/ns
2.0 V/ns
1.0 V/ns
ΔtIS
+150
+143
+133
+120
+100
+67
ΔtIH
+94
+89
+83
+75
+45
+21
0
ΔtIS
+180
+173
+163
+150
+160
+97
ΔtIH
+124
+119
+113
+105
+75
ΔtIS
+210
+203
+193
+180
+160
+127
+60
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
+51
0
+30
+30
+60
–5
–14
+25
+16
+55
+46
–13
–31
+17
–1
+47
+29
–22
–54
+8
–24
+38
+6
–34
–83
–4
–53
+36
–23
–60
–125
–188
–292
–375
–500
–708
–30
–95
0
–65
–100
–168
–200
–325
–517
–1,000
–70
–158
–262
–345
–470
–678
–1,095
–40
–128
–232
–315
–440
–648
–1,065
–138
–170
–295
–487
–970
–108
–140
–265
–457
–940
–1,125
PDF: 09005aef821ae8bf
1GbDDR2.pdf – Rev. T 02/10 EN
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57
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