HY5PS1G421LM HYNIX [Hynix Semiconductor], HY5PS1G421LM Datasheet - Page 62

• Manufacturer Part Number: HY5PS1G421LM
• Description: 1Gb DDR2 SDRAM(DDP)
• Manufacturer: HYNIX [Hynix Semiconductor]

Rev. 0.2 / Oct. 2005
5.2.6 Overshoot/Undershoot Specification
AC Overshoot/Undershoot Specification for Address and Control Pins A0-A15, BA0-BA2, CS, RAS, CAS, WE,
CKE, ODT
AC Overshoot/Undershoot Specification for Clock, Data, Strobe, and Mask Pins DQ, DQS, DM, CK, CK
Maximum peak amplitude allowed for overshoot area (See Figure 1):
Maximum peak amplitude allowed for undershoot area (See Figure 1):
Maximum overshoot area above VDD (See Figure1).
Maximum undershoot area below VSS (See Figure 1).
Maximum peak amplitude allowed for overshoot area (See Figure 2):
Maximum peak amplitude allowed for undershoot area (See Figure 2):
Maximum overshoot area above VDDQ (See Figure 2).
Maximum undershoot area below VSSQ (See Figure 2).
Volts
(V)
Volts
(V)
V
V
DD
SS
V
V
DDQ
SSQ
Parameter
Figure 2: AC Overshoot and Undershoot Definition for Clock, Data, Strobe, and Mask Pins
Parameter
Figure 1: AC Overshoot and Undershoot Definition for Address and Control Pins
Maximum Amplitude
Maximum Amplitude
Maximum Amplitude
Maximum Amplitude
Time (ns)
Time (ns)
DDR2-400
DDR2-400
0.38 V-ns
0.38 V-ns
0.75 V-ns
0.75 V-ns
0.9V
0.9V
0.9V
0.9V
Undershoot Area
Undershoot Area
Overshoot Area
Overshoot Area
Specification
Specification
DDR2-533
1HY5PS12421(L)M
DDR2-533
0.28 V-ns
0.28 V-ns
0.56 V-ns
0.56 V-ns
HY5PS12821(L)M
0.9V
0.9V
0.9V
0.9V
DDR2-667
DDR2-667
0.45 V-ns
0.45 V-ns
0.23 V-ns
0.23 V-ns
0.9V
0.9V
0.9V
0.9V
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