HYB18T512400BF Datasheet, PDF (31/57 Pages) Qimonda AG – 512-Mbit Double-Data-Rate-Two SDRAM

HYB18T512xxxBF–[2.5…5]
512-Mbit Double-Data-Rate-Two SDRAM
5.6
Overshoot and Undershoot Specification
Table 32 AC Overshoot / Undershoot Specification for Address and Control 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_DD
Maximum undershoot area below V_SS
1.33
1.00
0.80
0.80
V.ns
1.33
1.00
0.80
0.80
V.ns
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Figure 6 AC Overshoot / Undershoot Diagram for Address and Control Pins
Table 33 AC Overshoot / Undershoot Specification 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
Internet Data Sheet
31
Rev. 1.05, 2007-01
03292006-YBYM-WG0Z