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| 型號(hào)： | W9425G8DH-6 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | DRAM |
| 英文描述： | 32M X 8 DDR DRAM, 0.7 ns, PDSO66 |
| 封裝： | 0.400 INCH, 0.65 MM PITCH, ROHS COMPLIANT, TSOP2-66 |
| 文件頁(yè)數(shù)： | 24/53頁(yè) |
| 文件大?。?/td> | 1920K |
| 代理商： | W9425G8DH-6 |
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W9425G8DH
Publication Release Date: Nov. 20, 2007
- 30 -
Revision A4
10. SYSTEM CHARACTERISTICS FOR DDR SDRAM
The following specification parameters are required in systems using DDR400, DDR333 & DDR266
devices to ensure proper system performance. These characteristics are for system simulation
purposes and are guaranteed by design.
10.1 Table 1: Input Slew Rate for DQ, DQS, and DM
AC CHARACTERISTICS
DDR400
DDR333
DDR266
PARAMETER
SYMBOL
MIN.
MAX. MIN.
MAX. UNIT
NOTES
DQ/DM/DQS input slew rate
measured between VIH(DC),
VIL(DC) and VIL(DC), VIH(DC)
DCSLEW
0.5
4.0
0.5
4.0
0.5
4.0
V/nS
a, m
10.2 Table 2: Input Setup & Hold Time Derating for Slew Rate
INPUT SLEW RATE
ΔTIS
ΔTIH
UNIT
NOTES
0.5 V/nS
0
pS
i
0.4 V/nS
+50
0
pS
i
0.3 V/nS
+100
0
pS
i
10.3 Table 3: Input/Output Setup & Hold Time Derating for Slew Rate
INPUT SLEW RATE
ΔTDS
ΔTDH
UNIT
NOTES
0.5 V/nS
0
pS
k
0.4 V/nS
+75
0
pS
k
0.3 V/nS
+150
0
pS
k
10.4 Table 4: Input/Output Setup & Hold Derating for Rise/Fall Delta Slew Rate
INPUT SLEW RATE
ΔTDS
ΔTDH
UNIT
NOTES
±0.0 nS/V
0
pS
j
±0.25 nS/V
+50
0
pS
j
±0.5 nS/V
+100
0
pS
j
10.5 Table 5: Output Slew Rate Characteristics (X8 Devices only)
SLEW RATE
CHARACTERISTIC
TYPICAL
RANGE (V/NS)
MINIMUM
(V/NS)
MAXIMUM
(V/NS)
NOTES
Pullup Slew Rate
1.2 ~ 2.5
1.0
4.5
a, c, d, f, g, h
Pulldown Slew Rate
1.2 ~ 2.5
1.0
4.5
b, c, d, f, g, h
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W9425G8EH | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8M × 4 BANKS × 8 BITS DDR SDRAM |
| W946432AD | 制造商:WINBOND 制造商全稱:Winbond 功能描述:512K X 4 BANKS X 32 BITS DDR SDRAM |
| W9464G6IB | 制造商:WINBOND 制造商全稱:Winbond 功能描述:1M × 4 BANKS × 16 BITS DDR SDRAM |
| W9464G6IH | 制造商:WINBOND 制造商全稱:Winbond 功能描述:1M ?? 4 BANKS ?? 16 BITS DDR SDRAM |
| W9464G6JH | 制造商:WINBOND 制造商全稱:Winbond 功能描述:1M ? 4 BANKS ? 16 BITS DDR SDRAM |
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