W9751G6KB Datasheet, PDF (67/87 Pages) Winbond – 8M  4 BANKS  16 BIT DDR2 SDRAM

W9751G6KB
9.14 AC Overshoot / Undershoot Specification
9.14.1 AC Overshoot / Undershoot Specification for Address and Control Pins:
Applies to A0-A12, BA0-BA1, /CS, /RAS, /CAS, /WE, CKE, ODT
PARAMETER
18
25/25I
3
Maximum peak amplitude allowed for overshoot area
0.5
0.5
0.5
Maximum peak amplitude allowed for undershoot area
0.5
0.5
0.5
Maximum overshoot area above VDD
0.5
0.66
0.8
Maximum undershoot area below VSS
0.5
0.66
0.8
UNIT
V
V
V-nS
V-nS
9.14.2 AC Overshoot / Undershoot Specification for Clock, Data, Strobe and Mask pins:
Applies to DQ, LDQS, /LDQS, UDQS, /UDQS, LDM, UDM, CLK, /CLK
PARAMETER
18
25/25I
3
Maximum peak amplitude allowed for overshoot area
0.5
0.5
0.5
Maximum peak amplitude allowed for undershoot area
0.5
0.5
0.5
Maximum overshoot area above VDDQ
0.19
0.23
0.23
Maximum undershoot area below VSSQ
0.19
0.23
0.23
UNIT
V
V
V-nS
V-nS
Maximum Amplitude
VDD/VDDQ
Volts (V)
VSS/VSSQ
Maximum Amplitude
Time (nS)
Overshoot Area
Undershoot Area
Figure 29 – AC overshoot and undershoot definition
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Publication Release Date: Dec. 09, 2011
Revision A01