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HDD128M72D18RPW-13A Datasheet(PDF) 9 Page - Hanbit Electronics Co.,Ltd |
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HDD128M72D18RPW-13A Datasheet(HTML) 9 Page - Hanbit Electronics Co.,Ltd |
9 / 14 page HANBit HDD128M72D18RPW URL : www.hbe.co.kr 9 HANBit Electronics Co.,Ltd. REV 1.0 (January. 2005) System Characteristics for DDR SDRAM The following specification parameters are required in systems using DDR333, DDR266 devices to ensure proper system performance. these characteristics are for system simulation purposes and are guaranteed by design. Table 1 : Input Slew Rate for DQ, DQS, and DM AC CHARACTERISTICS DDR333 DDR266 PARAMETER SYMBOL MIN MAX MIN MAX Units Notes DQ/DM/DQS input slew rate measured between VIH(DC), VIL(DC) and VIL(DC), VIH(DC) DCSLEW TBD TBD TBD TBD V/ns a, m Table 2 : Input Setup & Hold Time Derating for Slew Rate INPUT SLEW RATE TIS TIH UNITS NOTES 0.5 V/ns 0 0 ps i 0.4 V/ns +50 0 ps i 0.3 V/ns +100 0 ps i Table 3 : Input/Output Setup & Hold Time Derating for Slew Rate INPUT SLEW RATE TDS TDH UNITS NOTES 0.5 V/ns 0 0 ps k 0.4 V/ns +75 +75 ps k 0.3 V/ns +150 +150 ps k Table 4 : Input/Output Setup & Hold Derating for Rise/Fall Delta Slew Rate DELTA SLEW RATE TDS TDH UNITS NOTES +/- 0.0 V/ns 0 0 ps j +/- 0.25 V/ns +50 +50 ps j +/- 0.5 V/ns +100 +100 ps j Table 5 : Output Slew Rate Characteristice (X4, X8 Devices only) SLEW RATE CHARACTERISTIC TYPICAL RANGE (V/NS) MINIMUM (V/NS) MAXIMUM (V/NS) NOTES Pullup Slew Rate 1.2 ~ 2.5 1.0 4.5 a,c,d,f,g,h Pulldown slew 1.2 ~ 2.5 1.0 4.5 b,c,d,f,g,h Table 6 : Output Slew Rate Characteristice (X16 Devices only) SLEW RATE CHARACTERISTIC TYPICAL RANGE (V/NS) MINIMUM (V/NS) MAXIMUM (V/NS) NOTES Pullup Slew Rate 1.2 ~ 2.5 0.7 5.0 a,c,d,f,g,h Pulldown slew 1.2 ~ 2.5 0.7 5.0 b,c,d,f,g,h Table 7 : Output Slew Rate Matching Ratio Characteristics AC CHARACTERISTICS DDR333 DDR266 PARAMETER MIN MAX MIN MAX Notes Output Slew Rate Matching Ratio (Pullup to Pulldown) TBD TBD TBD TBD e,m |
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