W631GG6KB
10.12 Overshoot and Undershoot Specifications
10.12.1 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 V DD
Maximum undershoot area below V SS
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
10.12.2 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 V DDQ
Maximum undershoot area below V SSQ
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
Overshoot Area
V DD /V DDQ
Volts (V)
V SS /V SSQ
Maximum Amplitude
Undershoot Area
Time (nS)
Figure 104 – AC Overshoot and Undershoot Definition
Publication Release Date: Dec. 09, 2013
Revision A05
- 121 -
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