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NT5TU64M8EE Datasheet(PDF) 71 Page - Nanya Technology Corporation. |
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NT5TU64M8EE Datasheet(HTML) 71 Page - Nanya Technology Corporation. |
71 / 96 page DDR2 512Mb SDRAM NT5TU64M8EE / NT5TU32M16EG 71 Version 1.0 Nanya Technology Corp.© 09/2014 All Rights Reserved General Note 4 Differential data strobe DDR2 SDRAM pin timings are specified for either single ended mode or differential mode depending on the setting of the EMRS “Enable DQS” mode bit; timing advantages of differential mode are realized in system design. The method by which the DDR2 SDRAM pin timings are measured is mode dependent. In single ended mode, timing relationships are measured relative to the rising or falling edges of DQS crossing at VREF. In differential mode, these timing relationships are measured relative to the cross point of DQS and its complement, DQS. This distinction in timing methods is guaranteed by design and characterization. Note that when differential data strobe mode is disabled via the EMRS, the complementary pin, DQS, must be tied externally to VSS through a 20 Ω to 10 kΩ resistor to insure proper operation. General Note 5 AC timings are for linear signal transitions. See Specific Notes on derating for other signal transitions. General Note 6 All voltages are referenced to VSS. General Note 7 These parameters guarantee device behavior, but they are not necessarily tested on each device.. General Note 8 Tests for AC timing, IDD, and electrical (AC and DC) characteristics, may be conducted at nominal reference/supply voltage levels, but the related specifications and device operation are guaranteed for the full voltage range specified. |
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