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參數資料
| 型號： | 48SD1616 |
| 廠商： | Maxwell Technologies, Inc |
| 英文描述： | 256 Mb SDRAM 4-Meg X 16-Bit X 4-Banks |
| 中文描述： | 256 MB的SDRAM的4梅格x 16位× 4，銀行 |
| 文件頁數： | 2/42頁 |
| 文件大?。?/td> | 596K |
| 代理商： | 48SD1616 |
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48SD1616
M
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ry
10
All data sheets are subject to change without notice
2005 Maxwell Technologies
All rights reserved.
256Mb (4-Meg X 16-Bit X 4-Banks) SDRAM
01.07.05 REV 4
DQMU/DQML Truth Table
Note: H: V
IH L: VIL x VIH or VIL
Write: I
DID is Needed
Read: I
DOD is Needed
The SDRAM can mask input/output data by means of DQMU/DQML.
DQMU masks the upper byte and DQML masks the lower byte.
During reading, the output buffer is set to Low-Z by setting DQMU/DQML to Low, enabling data output. On
the other hand, when DQMU/DQML is set High, the output buffer becomes High-Z, disabling data output.
During writing, data is written by setting DQMU/DQML to Low. When DQMU/DQML is set to High, the
previous data is held ( the new data is not written). Desired data can be masked during burst read or burst
write by setting DQMU/DQML. For more details, refer to the DQMU/DQML control section of the SDRAM
operating instructions.
COMMAND
SYMBOL
CKE=N-1
CKE=N
DQMU
DQML
Upper byte (DQ8 to DQ15) write enable/out-
put enable
ENBU
H
x
L
x
Lower byte (DQ0 to DQ7) write enable/out-
put enable
ENBL
H
x
L
Upper byte (DQ8 to DQ15) write inhibit/out-
put disable
MASKU
H
x
H
x
Lower byte (DQ0 to DQ7) write inhibit/out-
put disable
MASKL
H
x
H
相關PDF資料 |
PDF描述 |
|---|---|
| 48SD3208RPFK | CAP 1.5UF 50V CERAMIC MONO 20% |
| 48SD3208RPFE | 256 Mb SDRAM 8-Meg X 8-Bit X 4-Banks |
| 48SD3208RPFH | 256 Mb SDRAM 8-Meg X 8-Bit X 4-Banks |
| 48SD3208RPFI | CAP 1.5UF 50V CERAMIC MONO 20% |
| 48SD3208 | 256 Mb SDRAM 8-Meg X 8-Bit X 4-Banks |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 48SD1616RPFE | 制造商:MAXWELL 制造商全稱:Maxwell Technologies 功能描述:256 Mb SDRAM 4-Meg X 16-Bit X 4-Banks |
| 48SD1616RPFH | 制造商:MAXWELL 制造商全稱:Maxwell Technologies 功能描述:256 Mb SDRAM 4-Meg X 16-Bit X 4-Banks |
| 48SD1616RPFI | 制造商:MAXWELL 制造商全稱:Maxwell Technologies 功能描述:256 Mb SDRAM 4-Meg X 16-Bit X 4-Banks |
| 48SD1616RPFK | 制造商:MAXWELL 制造商全稱:Maxwell Technologies 功能描述:256 Mb SDRAM 4-Meg X 16-Bit X 4-Banks |
| 48SD3208 | 制造商:MAXWELL 制造商全稱:Maxwell Technologies 功能描述:256 Mb SDRAM 8-Meg X 8-Bit X 4-Banks |
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