K4T51043Q Datasheet, PDF (24/28 Pages) Samsung semiconductor – 512Mb B-die DDR2 SDRAM

512Mb B-die DDR2 SDRAM
DDR2 SDRAM
18. tIS and tIH (input setup and hold) derating.
∆tIS, ∆tIH Derating Values for DDR2-400, DDR2-533
CK, CK Differential Slew Rate
2.0 V/ns
1.5 V/ns
1.0 V/ns
∆tIS
∆tIH
∆tIS
∆tIH
∆tIS
∆tIH
4.0
+187
+94
+217
+124
+247
+154
3.5
+179
+89
+209
+119
+239
+149
3.0
+167
+83
+197
+113
+227
+143
2.5
+150
+75
+180
+105
+210
+135
2.0
+125
+45
+155
+75
+185
+105
1.5
1.0
Command/
0.9
Address Slew
0.8
rate(V/ns)
0.7
0.6
0.5
0.4
0.3
0.25
0.2
+83
0
-11
-25
-43
-67
-110
-175
-285
-350
-525
+21
0
-14
-31
-54
-83
-125
-188
-292
-375
-500
+113
+30
+19
+5
-13
-37
-80
-145
-255
-320
-495
+51
+30
+16
-1
-24
-53
-95
-158
-262
-345
-470
+143
+60
+49
+35
+17
-7
-50
-115
-225
-290
-465
+81
+60
+46
+29
+6
-23
-65
-128
-232
-315
-440
0.15
-800
-708
-770
-678
-740
-648
Units
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
Notes
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.9
Command/
0.8
Address Slew
rate(V/ns)
0.7
0.6
0.5
0.4
0.3
0.25
0.2
0.15
0.1
∆tIS and ∆tIH Derating Values for DDR2-667, DDR2-800
CK, CK Differential Slew Rate
2.0 V/ns
1.5 V/ns
1.0 V/ns
∆tIS
∆tIH
∆tIS
∆tIH
∆tIS
∆tIH
+150
+94
+180
+124
+210
+154
+143
+89
+173
+119
+203
+149
+133
+83
+163
+113
+193
+143
+120
+75
+150
+105
+180
+135
+100
+45
+130
+75
+160
+105
+67
+21
+97
+51
+127
+81
0
0
+30
+30
+60
+60
-5
-14
+25
+16
+55
+46
-13
-31
+17
-1
+47
+29
-22
-54
+8
-24
+38
+6
-34
-83
-4
-53
+26
-23
-60
-125
-30
-95
0
-65
-100
-188
-70
-158
-40
-128
-168
-292
-138
-262
-108
-232
-200
-375
-170
-345
-140
-315
-325
-500
-295
-470
-265
-440
-517
-708
-487
-678
-457
-648
-1000
-1125
-970
-1095
-940
-1065
Units
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
Notes
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
For all input signals the total tIS (setup time) and tIH(hold time) required is calculated by adding the datasheet tIS(base) and tIH(base) value to the delta
tIS and delta tIH derating value respectively. Example: tIS(total setup time)= tIS(base) + delta tIS.
Page 24 of 28
Rev. 1.5 July 2005