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HYB18T512400B Datasheet, PDF (35/68 Pages) Qimonda AG – 512-Mbit Double-Data-Rate-Two SDRAM
Internet Data Sheet
HYB18T512[40/80/16]0B[C/F]
512-Mbit Double-Data-Rate-Two SDRAM
5.6
Overshoot and Undershoot Specification
This chapter contains overshoot and undershoot specification.
TABLE 38
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 VDD
Maximum undershoot area below VSS
1.33
1.00
0.80
0.66
V.ns
1.33
1.00
0.80
0.66
V.ns
FIGURE 6
AC Overshoot / Undershoot Diagram for Address and Control Pins
0D[LPXP$PSOLWXGH
9ROWV 9
2YHUVKRRW$UHD
9''
0D[LPXP$PSOLWXGH
966
8QGHUVKRRW$UHD
7LPH QV
03(7
TABLE 39
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 VDDQ
Maximum undershoot area below VSSQ
0.38
0.28
0.23
0.23
V.ns
0.38
0.28
0.23
0.23
V.ns
Rev. 1.1, 2007-05
35
03292006-YBYM-WG0Z