EDE1104ACSE, EDE1108ACSE, EDE1116ACSE
AC Overshoot/Undershoot Specification
Parameter
Pins
Specification
Unit
V
Command, Address,
CKE, ODT
Maximum peak amplitude allowed for overshoot
Maximum peak amplitude allowed for undershoot
0.5
0.5
V
Maximum overshoot area above VDD
DDR2-800
0.66
V-ns
DDR2-667
DDR2-533
0.8
1.0
V-ns
V-ns
Maximum undershoot area below VSS
DDR2-800
0.66
V-ns
DDR2-667
0.8
1.0
0.5
0.5
V-ns
V-ns
V
DDR2-533
Maximum peak amplitude allowed for overshoot
Maximum peak amplitude allowed for undershoot
CK, /CK
V
Maximum overshoot area above VDD
DDR2-800, 667
0.23
0.28
0.23
V-ns
V-ns
V-ns
DDR2-533
Maximum undershoot area below VSS
DDR2-800, 667
DDR2-533
0.28
0.5
V-ns
V
Maximum peak amplitude allowed for overshoot
DQ, DQS, /DQS,
UDQS, /UDQS,
LDQS, /LDQS,
Maximum peak amplitude allowed for undershoot
0.5
V
Maximum overshoot area above VDDQ
DDR2-800, 667
RDQS, /RDQS,
DM, UDM, LDM
0.23
0.28
0.23
0.28
V-ns
V-ns
V-ns
V-ns
DDR2-533
Maximum undershoot area below VSSQ
DDR2-800, 667
DDR2-533
Maximum amplitude
Overshoot area
VDD, VDDQ
Volts (V)
VSS, VSSQ
Undershoot area
Time (ns)
Overshoot/Undershoot Definition
Data Sheet E0975E50 (Ver.5.0)
7
ELPIDA [ ELPIDA MEMORY ]
