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參數(shù)資料
| 型號： | W3EG7235S265JD3 |
| 英文描述： | 256MB - 2x16Mx72 DDR SDRAM REGISTERED ECC, w/PLL |
| 中文描述： | 256MB的- 2x16Mx72寄存ECC DDR內(nèi)存，瓦特/鎖相環(huán) |
| 文件頁數(shù)： | 9/12頁 |
| 文件大小： | 318K |
| 代理商： | W3EG7235S265JD3 |
9
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
W3EG7235S-JD3
PRELIMINARY
November 2004
Rev. 2
DDR SDRAM COMPONENT ELECTRICAL CHARACTERISTICS AND
RECOMMENDED AC OPERATING CONDITIONS (continued)
0°C ≤ T
A
≤ +70°C; V
CC
= +2.5V ±0.2V, V
CCQ
= +2.5V ±0.2V
AC Characteristics
262/265
202
Parameter
ACTIVE to READ or WRITE delay
PRECHARGE command period
DQS read preamble
DQS read postamble
ACTIVE bank a to ACTIVE bank b command
DQS write preamble
DQS write preamble setup time
DQS write postamble
Write recovery time
Internal WRITE to READ command delay
Data valid output window
REFRESH to REFRESH command interval
Average periodic refresh interval
Terminating voltage delay to V
CC
Exit SELF REFRESH to non-READ command
Exit SELF REFRESH to READ command
Symbol
t
RCD
t
RP
t
RPRE
t
RPST
t
RRD
t
WPRE
t
WPRES
t
WPST
t
WR
t
WTR
NA
t
REFC
t
REFI
t
VTD
t
XSNR
t
XSRD
Min
15
15
0.9
0.4
12
0.25
0
0.4
15
1
Max
Min
20
20
0.9
0.4
15
0.25
0
0.4
15
1
Max
Units
ns
ns
t
CK
t
CK
ns
t
CK
ns
t
CK
ns
t
CK
ns
μs
μs
ns
ns
t
CK
Notes
1.1
0.6
1.1
0.6
19
10,11
9
0.6
0.6
t
QH
-t
DQSQ
t
QH
-t
DQSQ
13
12
12
140.6
15.6
140.6
15.6
0
0
75
200
80
200
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W3EG7235S-JD3 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:256MB - 2x16Mx72 DDR SDRAM REGISTERED ECC, w/PLL |
| W3EG7236S202D3 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:256MB - 32Mx72 DDR SDRAM REGISTERED, w/PLL |
| W3EG7236S262D3 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:256MB - 32Mx72 DDR SDRAM REGISTERED, w/PLL |
| W3EG7236S265D3 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:256MB - 32Mx72 DDR SDRAM REGISTERED, w/PLL |
| W3EG7236S-D3 | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:256MB - 32Mx72 DDR SDRAM REGISTERED, w/PLL |
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