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參數(shù)資料
| 型號(hào)： | WED3DL644V10BC |
| 廠商： | WHITE ELECTRONIC DESIGNS CORP |
| 元件分類： | DRAM |
| 英文描述： | 4M X 64 SYNCHRONOUS DRAM, 7 ns, PBGA153 |
| 封裝： | 17 X 23 MM, BGA-153 |
| 文件頁數(shù)： | 15/28頁 |
| 文件大小： | 918K |
| 代理商： | WED3DL644V10BC |
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White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
WED3DL644V
August 2005
Rev. 6
FIG. 13 WRITE INTERRUPTED BY PRECHARGE COMMAND & WRITE BURST STOP CYCLE
@BURST LENGTH=FULL PAGE
NOTES:
1.
At full page mode, burst is end at the end of burst. So auto precharge is possible.
2.
Data-in at the cycle of interrupted by precharge cannot be written into the corresponding memory cell. It is dened by AC parameter of tRDL.
DQM at write interrupted by precharge command is needed to prevent invalid write.
DQM should mask invalid input data on precharge command cycle when asserting precharge before end of burst. Input data after Row precharge cycle
will be masked internally.
3.
Burst stop is valid at every burst length.
RAS#
CAS#
ADDR
BA
DQM
A10/AP
CKE
CLOCK
CE#
CAb
CAa
RAa
DQ
Precharge
(A-Bank)
Write
(A-Bank)
Burst Stop
Write
(A-Bank)
Row Active
(A-Bank)
WE#
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
HIGH
DON'T CARE
RAa
DAa0
DAa1
DAa2
DAa3
DAa4
DAb1
DAb0
DAb3
DAb2
DAb5
DAb4
Note 2
tRDL
tBDL
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| WED3DL644V10BI | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:4Mx64 SDRAM |
| WED3DL644V7BC | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:4Mx64 SDRAM |
| WED3DL644V7BI | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:4Mx64 SDRAM |
| WED3DL644V8BC | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:4Mx64 SDRAM |
| WED3DL644V8BI | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:4Mx64 SDRAM |
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