Internet Data Sheet
HY[B/I]18T512[40/80/16]0B2[C/F](L)
512-Mbit Double-Data-Rate-Two SDRAM
TABLE 37
AC Overshoot / Undershoot Spec. for Clock, Data, Strobe and Mask Pins
Parameter
DDR2-400
DDR2-533
DDR2-667
DDR2-800
Unit
Maximum peak amplitude allowed for overshoot area
Maximum peak amplitude allowed for undershoot area
Maximum overshoot area above VDDQ
0.9
0.9
0.9
0.9
V
0.9
0.9
0.9
0.9
V
0.38
0.38
0.28
0.28
0.23
0.23
0.23
0.23
V.ns
V.ns
Maximum undershoot area below VSSQ
FIGURE 7
AC Overshoot / Undershoot Diagram for Clock, Data, Strobe and Mask Pins
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9ROWVꢌꢎ9ꢏ
2YHUVKRRWꢌ$UHD
9''4
9664
8QGHUVKRRWꢌ$UHD
0D[LPXPꢌ$PSOLWXGHꢌꢌ
7LPHꢌꢎQVꢏ
03(7ꢀꢈꢁꢀ
Rev. 1.12, 2007-05
37
10062006-YPTZ-CDR7
QIMONDA [ QIMONDA AG ]
