HY5DU121622BT-5 Datasheet, PDF (25/30 Pages) Hynix Semiconductor – 512Mb(32Mx16) gDDR SDRAM

HY5DU121622BT(P)
AC Overshoot/Undershoot Specification for Address and Control Pins
This specification is intended for devices with no clamp protection and is guaranteed by design
Parameter
Specification
Maximum peak amplitude allowed for overshoot (See Figure 1):
1.5V
Maximum peak amplitude allowed for undershoot (See Figure 1):
1.5V
The area between the overshoot signal and VDD must be less than or equal to (See Figure 1): 4.5V - ns
The area between the undershoot signal and GND must be less than or equal to (See Figure 1): 4.5V - ns
+5
+4
+3
Volts ⁺²
(V) ₊₁
0
-1
-2
-3
Max. area=4.5V-ns
0
1
2
Max. amplitude=1.5V
Overshoot
VDD
Ground
Undershoot
3
4
5
6
Time(ns)
Figure 1: Address and Control AC Overshoot and Undershoot Definitio
Overshoot/Undershoot Specification for Data, Strobe, and Mask Pins
Parameter
Specification
Maximum peak amplitude allowed for overshoot (See Figure 2):
1.2V
Maximum peak amplitude allowed for undershoot (See Figure 2):
1.2V
The area between the overshoot signal and VDD must be less than or equal to (See Figure 2): 2.4V - ns
The area between the undershoot signal and GND must be less than or equal to (See Figure 2): 2.4V - ns
+5
+4
+3
Volts ⁺²
(V) ₊₁
0
-1
-2
-3
Max. area=2.4V-ns
0
1
2
Max. amplitude=1.2V
Overshoot
VDD
Ground
Undershoot
3
4
5
6
Time(ns)
Figure 2: DQ/DM/DQS AC Overshoot and Undershoot Definition
Rev. 0.2 / Mar. 2005
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