46DR83200A Datasheet, PDF (11/48 Pages) Integrated Silicon Solution, Inc – 32Mx8, 16Mx16 DDR2 DRAM

IS43/46DR83200A, IS43/46DR16160A
OVERSHOOT/UNDERSHOOT SPECIFICATION
AC overshoot/undershoot specification for Address and Control pins
Parameter
Maximum peak amplitude allowed for overshoot area
Maximum peak amplitude allowed for undershoot area
Maximum overshoot area above VDD (see figure below)
Maximum undershoot area below VSS (see figure below)
DDR2-400
0.5V
0.5V
1.33 V-ns
1.33 V-ns
Specification
DDR2-533 DDR2-667
0.5V
0.5V
0.5V
0.5V
1.0 V-ns
0.8 V-ns
1.0 V-ns
0.8 V-ns
DDR2-800
0.5V
0.5V
0.66 V-ns
0.66 V-ns
Maximum Amplitude
Overshoot Area
Volts
(V)
VDD
VSS
Maximum Amplitude
Time (ns)
AC overshoot and undershoot definition for address and control pins
Undershoot Area
AC overshoot/undershoot specification for Clock, Data, Strobe, and Mask pins:
DQ, (U/L/R) DQS, (U/L/R) DQS, DM, CK, CK
Parameter
Maximum peak amplitude allowed for overshoot area
Maximum peak amplitude allowed for undershoot area
Maximum overshoot area above VDDQ (See Figure below)
Maximum undershoot area below VSSQ (See Figure below)
DDR2-400
0.5V
0.5V
0.38 V-ns
0.38 V-ns
Specification
DDR2-533 DDR2-667
0.5V
0.5V
0.5V
0.5V
0.28 V-ns 0.23 V-ns
0.28 V-ns 0.23 V-ns
DDR2-800
0.5V
0.5V
0.23 V-ns
0.23 V-ns
Maximum Amplitude
Overshoot Area
Volts
(V)
VDDQ
VSSQ
Maximum Amplitude
Time (ns)
Undershoot Area
AC overshoot and undershoot definition for clock, data, strobe, and mask pins
Integrated Silicon Solution, Inc. — www.issi.com
11
Rev. D
08/16/2012