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| K4T1G044QE Datasheet, PDF (27/46 Pages) Samsung semiconductor – 1Gb E-die DDR2 SDRAM | |||
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K4T1G044QE
K4T1G084QE
K4T1G164QE
datasheet
Rev. 1.11
DDR2 SDRAM
DQS
DQS
VDDQ
tDS tDH
tDS tDH
VIH(AC)min
VREF to ac
region
VIH(DC)min
VREF(DC)
VIL(DC)max
nominal slew
rate
VIL(AC)max
VSS
tVAC
nominal
slew rate
VREF to ac
region
ÎTF
Setup Slew Rate= VREF(DC) - VIL(AC)max
Falling Signal
ÎTF
ÎTR
Setup Slew Rate
Rising Signal =
VIH(AC)min - VREF(DC)
ÎTR
Figure 7. IIIustration of nominal slew rate for tDS (differential DQS,DQS)
- 27 -
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