HYB18TC256160AF Datasheet, PDF (28/54 Pages) Qimonda AG – 256-Mbit Double-Data-Rate-Two SDRAM DDR2 SDRAM

Internet Data Sheet
HYB18TC256160AF
256-Mbit Double-Data-Rate-Two SDRAM
TABLE 34
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 0.9
0.9
0.9
0.9
V
Maximum peak amplitude allowed for undershoot area 0.9
0.9
0.9
0.9
V
Maximum overshoot area above V_DDQ
Maximum undershoot area below V_SSQ
0.38
0.28
0.23
0.23
V.ns
0.38
0.28
0.23
0.23
V.ns
FIGURE 5
AC Overshoot / Undershoot Diagram for Clock, Data, Strobe and Mask Pins
9ROWV9
0D[LPXP$PSOLWXGH
2YHUVKRRW$UHD
9_''4
0D[LPXP$PSOLWXGH
9₆₆₄
8QGHUVKRRW$UHD
7LPHQV
03(7
Rev. 1.1, 2007-02
28
03062006-H3V1-XJT4