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HY5DU12822B Datasheet(PDF) 30 Page - Hynix Semiconductor |
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HY5DU12822B Datasheet(HTML) 30 Page - Hynix Semiconductor |
30 / 37 page ![]() Rev. 0.1 / May 2004 30 HY5DU12422B(L)TP HY5DU12822B(L)TP HY5DU121622B(L)TP AC Overshoot/Undershoot Specification for Address and Control Pins This specification is intended for devices with no clamp protection and is guaranteed by design Overshoot/Undershoot Specification for Data, Strobe, and Mask Pins Parameter Specification DDR333 DDR200/266 Maximum peak amplitude allowed for overshoot (See Figure 1): 1.5V 1.5V Maximum peak amplitude allowed for undershoot (See Figure 1): 1.5V 1.5V The area between the overshoot signal and VDD must be less than or equal to (See Figure 1): 4.5V - ns 4.5V - ns The area between the undershoot signal and GND must be less than or equal to (See Figure 1): 4.5V - ns 4.5V - ns Parameter Specification DDR333 DDR200/266 Maximum peak amplitude allowed for overshoot (See Figure 2): 1.2V 1.2V Maximum peak amplitude allowed for undershoot (See Figure 2): 1.2V 1.2V The area between the overshoot signal and VDD must be less than or equal to (See Figure 2): 2.4V - ns 2.4V - ns The area between the undershoot signal and GND must be less than or equal to (See Figure 2): 2.4V - ns 2.4V - ns VDD 01 23 45 6 0 +1 +2 +3 +4 +5 -1 -2 -3 Volts (V) Time(ns) Undershoot Ground Max. area=4.5V-ns Overshoot Max. amplitude=1.5V Figure 1: Address and Control AC Overshoot and Undershoot Definitio VDD 01 23 45 6 0 +1 +2 +3 +4 +5 -1 -2 -3 Volts (V) Time(ns) Undershoot Ground Max. area=2.4V-ns Overshoot Max. amplitude=1.2V Figure 2: DQ/DM/DQS AC Overshoot and Undershoot Definition |
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