Hynix HMT31GR7CFR4C-PBD8 User Manual
Rev. 1.1 / May. 2013
44
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
Notes:
1. The sum of the applied voltage (VDD) and peak amplitude overshoot voltage is not to exceed absolute maximum
DC ratings.
2. The sum of applied voltage (VDD) and peak amplitude undershoot voltage is not to exceed absolute maximum DC
ratings.
Maximum Amplitude
Overshoot Area
VDDQ
VSSQ
Maximum Amplitude
Undershoot Area
Time (ns)
Volts
(V)