Hynix HMT42GR7AFR4C-PBTD Manuel D’Utilisation
Rev. 1.0 / Jun. 2013
41
Clock, Data, Strobe and Mask Overshoot and Undershoot Specifications
Clock, Data, Strobe and Mask Overshoot and Undershoot Definition
AC Overshoot/Undershoot Specification for Clock, Data, Strobe and Mask
Parameter
DDR3-
800
DDR3-
1066
DDR3-
1333
DDR3-
1600
DDR3-
1866
Units
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
Maximum Amplitude
Overshoot Area
VDDQ
VSSQ
Maximum Amplitude
Undershoot Area
Time (ns)
Volts
(V)