w9425g6eh Winbond Electronics Corp America, w9425g6eh Datasheet - Page 31

• Manufacturer Part Number: w9425g6eh
• Description: 4 M ? 4 Banks ? 16 Bits Ddr Sdram
• Manufacturer: Winbond Electronics Corp America

10.6 Table 6: Output Slew Rate Matching Ratio Characteristics
10.7 Table 7: AC Overshoot/Undershoot Specification for Address and Control Pins
must be less than or equal to Max. area in Figure 3
must be less than or equal to Max. area in Figure 3
The area between the undershoot signal and GND
Output Slew Rate Matching Ratio
Maximum peak amplitude allowed for undershoot
The area between the overshoot signal and V
Maximum peak amplitude allowed for overshoot
CHARACTERISTIC
(Pullup to Pulldown)
-1
-2
-3
-4
-5
5
4
3
2
1
0
PARAMETER
SLEW RATE
Figure 3: Address and Control AC Overshoot and Undershoot Definition
0 0.5 0.68751.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.06.3125 6.5 7.0
PARAMETER
Max. amplitude = 1.5V
Max. area
VDD
MIN.
0.67
Overshoot
DDR500
MAX.
1.5
MIN.
0.67
DD
- 31 -
DDR400
Time (nS)
MAX.
1.5
DDR500
3.0 V-nS
3.0 V-nS
1.5 V
1.5 V
MIN.
0.67
DDR333
Publication Release Date:May 07, 2008
DDR400
3.0 V-nS
3.0 V-nS
MAX.
1.5 V
1.5 V
Max. amplitude = 1.5V
SPECIFICATION
1.5
Undershoot
MIN.
0.67
W9425G6EH
DDR266
DDR333
3.6 V-nS
3.6 V-nS
GND
1.5 V
1.5 V
MAX.
1.5
Revision A05
DDR266
4.5 V-nS
4.5 V-nS
NOTES
1.5 V
1.5 V
e, m