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| 型號： | W3EG6433S262D3 |
| 英文描述： | 256MB - 2x16Mx64 DDR SDRAM UNBUFFERED |
| 中文描述： | 256MB的- 2x16Mx64 DDR內存緩沖 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大小： | 246K |
| 代理商： | W3EG6433S262D3 |
8
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
W3EG6433S-D3
-JD3
November 2005
Rev. 2
PRELIMINARY
DDR SDRAM COMPONENT ELECTRICAL CHARACTERISTICS AND
RECOMMENDED AC OPERATING CONDITIONS (continued)
335
(DDR333@CL=2.5)
(DDR266@CL=2.0)
AC Characteristics
262
263
(DDR266@CL=2.0)
265
(DDR266@CL=2.5)
Parameter
Output Slew Rate (x4,x8)
Output Slew Rate Matching Ratio (rise
to fall)
Mode register set cycle time
DQ & DM setup time to DQS
DQ & DM hold time to DQS
Control & Address input pulse width
DQ & DM input pulse width
Power down exit time
Exit self refresh to non-Read command
Exit self refresh to read command
Refreash interval time
Output DQS valid window
Clock half period
Symbol
t
SL(O)
t
SLMR
Min
1.0
0.67
Max
4.5
1.5
Min
1.0
0.67
Max
4.5
1.5
Min
1.0
0.67
Max
4.5
1.5
Min
1.0
0.67
Max
4.5
1.5
Units
V/ns
ns
Notes
t
MRD
t
DS
t
DH
t
IPW
t
DIPW
t
RDEX
t
XSRD
t
XSRD
t
REFI
t
QH
t
QH
12
0.5
0.45
2.2
1.75
6
75
200
15
0.5
0.5
2.2
1.75
7.5
75
200
15
0.5
0.5
2.2
1.75
7.5
75
200
15
0.5
0.5
2.2
1.75
7.5
75
200
ns
ns
ns
ns
ns
ns
ns
t
CK
us
ns
ns
j, k
j, k
8
8
15.6
-
15.6
-
15.6
-
15.6
4
11
t
HP
-t
QHS
t
CLmin or
chmin
t
HP
-t
QHS
t
CLmin or
chmin
t
HP
-t
QHS
t
CLmin or
chmin
t
HP
-t
QHS
t
CLmin or
chmin
-
-
-
10, 11
Data hold skew factor
DQS write postamble time
Active to Read with Auto precharge
command
Autoprecharge write recovery &
Precharge time
t
QHS
t
WPST
t
RAP
0.55
0.6
0.75
0.6
0.75
0.6
0.75
0.6
ns
t
CK
11
2
0.4
18
0.4
20
0.4
20
0.4
20
t
XSNR
t
WR
/t
CK
+
t
RP
/t
CK
)
t
WR
/t
CK
+
t
RP
/t
CK
)
t
WR
/t
CK
+
t
RP
/t
CK
)
t
WR
/t
CK
+
t
RP
/t
CK
)
t
CK
13
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| W3EG6433S263D3 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:256MB - 2x16Mx64 DDR SDRAM UNBUFFERED |
| W3EG6433S263JD3 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:256MB - 2x16Mx64 DDR SDRAM UNBUFFERED |
| W3EG6433S265AD4 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:256MB - 32Mx64 DDR SDRAM UNBUFFERED, w/PLL |
| W3EG6433S265BD4 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:256MB - 32Mx64 DDR SDRAM UNBUFFERED, w/PLL |
| W3EG6433S265D3 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:256MB - 2x16Mx64 DDR SDRAM UNBUFFERED |
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