W9712G6JB Datasheet, PDF (66/86 Pages) Winbond – 2M × 4 BANKS × 16 BIT DDR2 SDRAM

W9712G6JB
9.14 AC Overshoot / Undershoot Specification
9.14.1 AC Overshoot / Undershoot Specification for Address and Control Pins:
Applies to A0-A11, BA0-BA1, /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
−18
−25/25I/25A
−3
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.66
0.8
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
Maximum peak amplitude allowed for overshoot area
Maximum peak amplitude allowed for undershoot area
Maximum overshoot area above VDDQ
Maximum undershoot area below VSSQ
−18
−25/25I/25A
−3
0.5
0.5
0.5
0.5
0.5
0.5
0.19
0.23
0.23
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: Mar. 15, 2010
Revision A01