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
DDR2–400 DDR2–533 DDR2–667 DDR2–800 Unit
Parameter
Maximum peak amplitude allowed for overshoot area 0.9
Maximum peak amplitude allowed for undershoot area 0.9
0.9
0.9
0.9
V
0.9
0.9
0.9
V
Maximum overshoot area above VDD
Maximum undershoot area below VSS
1.33
1.33
1.00
1.00
0.80
0.80
0.80
0.80
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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
DDR2–400 DDR2–533 DDR2–667 DDR2–800 Unit
Parameter
Maximum peak amplitude allowed for overshoot area 0.9
Maximum peak amplitude allowed for undershoot area 0.9
0.9
0.9
0.9
V
0.9
0.9
0.9
V
Maximum overshoot area above VDDQ
Maximum undershoot area below VSSQ
0.38
0.38
0.28
0.28
0.23
0.23
0.23
0.23
V.ns
V.ns
Internet Data Sheet
31
Rev. 1.05, 2007-01
03292006-YBYM-WG0Z
QIMONDA [ QIMONDA AG ]
