HMT451R7AFR8A Datasheet, PDF (42/72 Pages) Hynix Semiconductor – DDR3L SDRAM Registered DIMM Based on 4Gb A-die

Clock, Data, Strobe and Mask Overshoot and Undershoot Specifications
AC Overshoot/Undershoot Specification for Clock, Data, Strobe and Mask
Parameter
DDR3 DDR3 DDR3 DDR3 DDR3
Units
L-800 L-1066L-1333L-1600L-1866
Maximum peak amplitude allowed for overshoot area. (See Figure below) 0.4 0.4 0.4 0.4 0.4 V
Maximum peak amplitude allowed for undershoot area. (See Figure below) 0.4 0.4 0.4 0.4 0.4 V
Maximum overshoot area above VDD (See Figure below)
0.25 0.19 0.15 0.13 0.11 V-ns
Maximum undershoot area below VSS (See Figure below)
0.25 0.19 0.15 0.13 0.11 V-ns
(CK, CK, DQ, DQS, DQS, DM)
See figure below for each parameter definition
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 / Jul. 2012
42