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K4T51083QB-GCD5 Datasheet(PDF) 24 Page - Samsung semiconductor |
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K4T51083QB-GCD5 Datasheet(HTML) 24 Page - Samsung semiconductor |
24 / 28 page Page 24 of 28 Rev. 1.5 July 2005 DDR2 SDRAM 512Mb B-die DDR2 SDRAM 18. tIS and tIH (input setup and hold) derating. 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. ∆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 Units Notes ∆tIS ∆tIH ∆tIS ∆tIH ∆tIS ∆tIH Command/ Address Slew rate(V/ns) 4.0 +187 +94 +217 +124 +247 +154 ps 1 3.5 +179 +89 +209 +119 +239 +149 ps 1 3.0 +167 +83 +197 +113 +227 +143 ps 1 2.5 +150 +75 +180 +105 +210 +135 ps 1 2.0 +125 +45 +155 +75 +185 +105 ps 1 1.5 +83 +21 +113 +51 +143 +81 ps 1 1.0 0 0 +30 +30 +60 +60 ps 1 0.9 -11 -14 +19 +16 +49 +46 ps 1 0.8 -25 -31+5 -1+35 +29 ps 1 0.7 -43 -54 -13 -24 +17 +6 ps 1 0.6 -67 -83 -37 -53 -7 -23 ps 1 0.5 -110 -125 -80 -95 -50 -65 ps 1 0.4 -175 -188 -145 -158 -115 -128 ps 1 0.3 -285 -292 -255 -262 -225 -232 ps 1 0.25 -350 -375 -320 -345 -290 -315 ps 1 0.2 -525 -500 -495 -470 -465 -440 ps 1 0.15 -800 -708 -770 -678 -740 -648 ps 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 Units Notes ∆tIS ∆tIH ∆tIS ∆tIH ∆tIS ∆tIH Command/ Address Slew rate(V/ns) 4.0 +150 +94 +180 +124 +210 +154 ps 1 3.5 +143 +89 +173 +119 +203 +149 ps 1 3.0 +133 +83 +163 +113 +193 +143 ps 1 2.5 +120 +75 +150 +105 +180 +135 ps 1 2.0 +100 +45 +130 +75 +160 +105 ps 1 1.5 +67 +21 +97 +51 +127 +81 ps 1 1.0 0 0 +30 +30 +60 +60 ps 1 0.9 -5 -14 +25 +16 +55 +46 ps 1 0.8 -13 -31 +17 -1 +47 +29 ps 1 0.7 -22 -54+8-24 +38 +6 ps 1 0.6 -34 -83 -4 -53 +26 -23 ps 1 0.5 -60 -125 -30 -95 0 -65 ps 1 0.4 -100 -188 -70 -158 -40 -128 ps 1 0.3 -168 -292 -138 -262 -108 -232 ps 1 0.25 -200 -375 -170 -345 -140 -315 ps 1 0.2 -325 -500 -295 -470 -265 -440 ps 1 0.15 -517 -708 -487 -678 -457 -648 ps 1 0.1 -1000 -1125 -970 -1095 -940 -1065 ps 1 |
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