EBE51RD8AJFA
AC Overshoot/Undershoot Specification (DDR2 SDRAM Component 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
0.8
V
Maximum overshoot area above VDD
DDR2-667
V-ns
DDR2-533
DDR2-400
1.0
V-ns
V-ns
1.33
Maximum undershoot area below VSS
DDR2-667
0.8
V-ns
DDR2-533
1.0
1.33
0.5
V-ns
V-ns
V
DDR2-400
Maximum peak amplitude allowed for overshoot
Maximum peak amplitude allowed for undershoot
CK, /CK
0.5
V
Maximum overshoot area above VDD
DDR2-667
0.23
V-ns
DDR2-533
DDR2-400
0.28
0.38
V-ns
V-ns
Maximum undershoot area below VSS
DDR2-667
0.23
V-ns
DDR2-533
0.28
0.38
0.5
V-ns
V-ns
V
DDR2-400
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
DDR2-667
RDQS, /RDQS,
DM, UDM, LDM
0.23
V-ns
DDR2-533
DDR2-400
0.28
0.38
V-ns
V-ns
Maximum undershoot area below VSSQ
DDR2-667
0.23
V-ns
DDR2-533
DDR2-400
0.28
0.38
V-ns
V-ns
Maximum amplitude
Overshoot area
VDD, VDDQ
Volts (V)
VSS, VSSQ
Undershoot area
Time (ns)
Overshoot/Undershoot Definition
Data Sheet E1036E30 (Ver. 3.0)
11
ELPIDA [ ELPIDA MEMORY ]
