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K4C89083AF-ACF5 Datasheet(PDF) 11 Page - Samsung semiconductor |
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K4C89083AF-ACF5 Datasheet(HTML) 11 Page - Samsung semiconductor |
11 / 55 page K4C89183AF - 11 - REV. 0.7 Jan. 2005 AC Characteristics and Operating Conditions (Notes : 1, 2) Symbol Parameter F6 FB F5 Units Notes Min Max Min Max Min Max tRC Random Cycle Time 20.0 - 22.5 - 25 - ns 3 tCK Clock Cycle Time CL = 4 4.0 6.0 4.5 6.0 5.0 6.0 3 CL = 5 3.33 6.0 3.75 6.0 4.5 6.0 3 CL = 6 3.0 6.0 3.33 6.0 4.0 6.0 3 tRAC Random Access Time - 20.0 - 22.5 - 25 3 tCH Clock High Time 0.45*tCK - 0.45*tCK - 0.45*tCK -3 tCL Clock Low Time 0.45*tCK - 0.45*tCK - 0.45*tCK -3 tCKQS QS Access Time from CLK -0.45 0.45 -0.45 0.45 -0.5 0.5 3, 8 tQSQ Data Output Skew from QS - 0.2 - 0.25 - 0.3 4 tAC Data Access Time from CLK -0.5 0.5 -0.5 0.5 -0.6 0.6 3, 8 tOH Data Output Hold Time from CLK -0.5 0.5 -0.5 0.5 -0.6 0.6 3, 8 tHP CLK half period ( minium of Actual tCH, tCL) min(tCH, tCL) - min(tCH, tCL) - min(tCH, tCL) -3 tQSP QS(Read) Pulse Width tHP-tQHS - tHP-tQHS - tHP-tQHS -4, 8 tQSQV Data Output Valid Time from QS tHP-tQHS - tHP-tQHS - tHP-tQHS -4, 8 tQHS DQ, QS Hold skew factor - 0.055x tCK+0.17 - 0.055x tCK+0.17 - 0.055x tCK+0.17 tDQSS DS(Write) Low to High Setup Time 0.8*tCK 1.2*tCK 0.8*tCK 1.2*tCK 0.8*tCK 1.2*tCK 3 tDSPRE DS(Write) Preamble Pulse Width 0.4*tCK - 0.4*tCK - 0.4*tCK -4 tDSPRES DS First Input Setup Time 0 - 0 - 0 - 3 tDSPREH DS First Low Input Hold Time 0.3*tCK - 0.3*tCK - 0.3*tCK -3 tDSP DS High or Low Input Pulse Width 0.45*tCK 0.55*tCK 0.45*tCK 0.55*tCK 0.45*tCK 0.55*tCK 4 tDSS DS Input Falling Edge to Clock Setup Time CL = 4 0.75 - 0.8 - 1.0 - 3, 4 CL = 5 0.75 - 0.8 - 1.0 - 3, 4 CL = 6 0.75 - 0.8 - 1.0 - 3, 4 CL = 7 ---- - - 3, 4 tDSPST DS(Write) Postamble Pulse Width 0.45*tCK - 0.45*tCK 0.45*tCK -4 tDSPSTH DS(Write) Postamble Hold Time CL = 4 0.75 - 0.8 - 1.0 - 3, 4 CL = 5 0.75 - 0.8 - 1.0 - 3, 4 CL = 6 0.75 - 0.8 - 1.0 3, 4 CL = 7 ---- - - 3, 4 tDS Data Input Setup Time from DS 0.3 - 0.35 - 0.4 - 4 tDH Data Input Hold Time from DS 0.3 - 0.35 - 0.4 - 4 tIS Command / Address Input Setup Time 0.6 - 0.6 - 0.7 - 3 tIH Command / Address Input Hold Time 0.6 - 0.6 - 0.7 - 3 |
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