HMT325R7AFR8A-G7 Datasheet, PDF (45/76 Pages) Hynix Semiconductor – 240pin DDR3 SDRAM Registered DIMM

Clock, Data, Strobe and Mask Overshoot and Undershoot Specifications
AC Overshoot/Undershoot Specification for Clock, Data, Strobe and Mask
Parameter
DDR3-800 DDR3-1066DDR3-1333 Units
Maximum peak amplitude allowed for overshoot area. (See figure below)
0.4
0.4
0.4
V
Maximum peak amplitude allowed for undershoot area. (See figure below) 0.4
0.4
0.4
V
Maximum overshoot area above VDD (See figure below)
0.25
0.19
0.15 V-ns
Maximum undershoot area below VSS (See figure below)
(CK, CK, DQ, DQS, DQS, DM)
0.25
0.19
0.15 V-ns
M axim um Am plitude
Overshoot Area
V o lts
(V)
VDDQ
VSSQ
M axim um Am plitude
Tim e (ns)
Undershoot Area
Clock, Data Strobe and M ask O vershoot and Undershoot Definition
Clock, Data, Strobe and Mask Overshoot and Undershoot Definition
Rev. 0.1 / Nov. 2009
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