W9425G6EH-5 Winbond Electronics, W9425G6EH-5 Datasheet - Page 32

• Manufacturer Part Number: W9425G6EH-5
• Description: IC DDR-400 SDRAM 256MB 66TSSOPII
• Manufacturer: Winbond Electronics

Specifications of W9425G6EH-5

• Format - Memory: RAM
• Memory Type: DDR SDRAM
• Memory Size: 256M (16Mx16)
• Speed: 250MHz
• Interface: Parallel
• Voltage - Supply: 2.3 V ~ 2.7 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 66-TSOPII
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
Output Slew Rate Matching Ratio
The area between the undershoot signal and GND
SLEW RATE CHARACTERISTIC
Maximum peak amplitude allowed for undershoot
The area between the overshoot signal and VDD
Maximum peak amplitude allowed for overshoot
-1
-2
-3
-4
-5
(Pullup to Pulldown)
5
4
3
2
1
0
PARAMETER
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
Overshoot
MIN.
0.67
DDR500
MAX.
1.5
- 32 -
Time (nS)
MIN.
0.67
3.0 V-nS
3.0 V-nS
DDR500
DDR400
1.5 V
1.5 V
MAX.
Publication Release Date:Dec. 03, 2008
1.5
Max. amplitude = 1.5V
SPECIFICATION
3.0 V-nS
3.0 V-nS
DDR400
MIN.
0.67
Undershoot
1.5 V
1.5 V
DDR333
W9425G6EH
GND
MAX.
1.5
3.6 V-nS
3.6 V-nS
DDR333
Revision A08
1.5 V
1.5 V
NOTES
e, m