参数资料
型号: K4T56163QI-ZLD50
元件分类: DRAM
英文描述: 16M X 16 SYNCHRONOUS DRAM, 0.5 ns, PBGA84
封装: ROHS COMPLIANT, FBGA-84
文件页数: 32/42页
文件大小: 727K
代理商: K4T56163QI-ZLD50
Rev. 1.0 October 2007
DDR2 SDRAM
K4T56163QI
38 of 42
20. Input waveform timing tDS with differential data strobe enabled MR[bit10]=0, is referenced from the input signal crossing at the VIH(ac) level to the
differential data strobe crosspoint for a rising signal, and from the input signal crossing at the VIL(ac) level to the differential data strobe crosspoint for
a falling signal applied to the device under test. DQS, DQS signals must be monotonic between Vil(dc)max and Vih(dc)min. See Figure 18.
21. Input waveform timing tDH with differential data strobe enabled MR[bit10]=0, is referenced from the differential data strobe crosspoint to the input sig-
nal crossing at the VIH(dc) level for a falling signal and from the differential data strobe crosspoint to the input signal crossing at the VIL(dc) level for
a rising signal applied to the device under test. DQS, DQS signals must be monotonic between Vil(dc)max and Vih(dc)min. See Figure 18.
22. Input waveform timing is referenced from the input signal crossing at the VIH(ac) level for a rising signal and VIL(ac) for a falling signal applied to the
device under test. See Figure 19.
23. Input waveform timing is referenced from the input signal crossing at the VIL(dc) level for a rising signal and VIH(dc) for a falling signal applied to the
device under test. See Figure 19.
tDS
VDDQ
VIH(ac) min
VIH(dc) min
VREF(dc)
VIL(dc) max
VIL(ac) max
VSS
DQS
tDH
tDS
tDH
Figure 18 - Differential input waveform timing - tDS and tDH
tIS
VDDQ
VIH(ac) min
VIH(dc) min
VREF(dc)
VIL(dc) max
VIL(ac) max
VSS
CK
tIH
tIS
tIH
Figure 19 - Differential input waveform timing - tIS and tIH
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