W631GG6KB-15 Datasheet, PDF (120/158 Pages) Winbond – Double Data Rate architecture: two data transfers per clock cycle

W631GG6KB
9.12 Overshoot and Undershoot Specifications
9.12.1 AC Overshoot /Undershoot Specification for Address and Control Pins:
A0-A12, BA0-BA2, CS#, RAS#, CAS#, WE#, CKE, ODT
PARAMETER
Maximum peak amplitude allowed for overshoot area
Maximum peak amplitude allowed for undershoot area
Maximum overshoot area above VDD
Maximum undershoot area below VSS
DDR3-1333
0.4
0.4
0.4
0.4
DDR3-1600
0.4
0.4
0.33
0.33
DDR3-1866
0.4
0.4
0.28
0.28
UNIT
V
V
V-nS
V-nS
9.12.2 AC Overshoot /Undershoot Specification for Clock, Data, Strobe and Mask pins:
CK, CK#, DQ, DQS, DQS#, DM
PARAMETER
Maximum peak amplitude allowed for overshoot area
Maximum peak amplitude allowed for undershoot area
Maximum overshoot area above VDDQ
Maximum undershoot area below VSSQ
DDR3-1333
0.4
0.4
0.15
0.15
DDR3-1600
0.4
0.4
0.13
0.13
DDR3-1866
0.4
0.4
0.11
0.11
UNIT
V
V
V-nS
V-nS
Maximum Amplitude
VDD/VDDQ
Volts (V)
VSS/VSSQ
Maximum Amplitude
Time (nS)
Overshoot Area
Undershoot Area
Figure 104 – AC Overshoot and Undershoot Definition
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Publication Release Date: Feb. 27, 2013
Revision A04