EBE41EF8ABFA
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
V
Maximum overshoot area above VDD
DDR2-800
0.66
0.8
V-ns
V-ns
V-ns
DDR2-667
Maximum undershoot area below VSS
DDR2-800
0.66
DDR2-667
0.8
V-ns
V
Maximum peak amplitude allowed for overshoot
Maximum peak amplitude allowed for undershoot
Maximum overshoot area above VDD
Maximum undershoot area below VSS
Maximum peak amplitude allowed for overshoot
Maximum peak amplitude allowed for undershoot
Maximum overshoot area above VDDQ
Maximum undershoot area below VSSQ
CK, /CK
0.5
0.5
V
0.23
0.23
0.5
V-ns
V-ns
V
DQ, DQS, /DQS,
RDQS, /RDQS;
DM
0.5
V
0.23
0.23
V-ns
V-ns
Maximum amplitude
Overshoot area
VDD, VDDQ
Volts (V)
VSS, VSSQ
Undershoot area
Time (ns)
Overshoot/Undershoot Definition
Preliminary Data Sheet E1285E10 (Ver. 1.0)
11
ELPIDA [ ELPIDA MEMORY ]
