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參數(shù)資料
| 型號： | MT48LC4M16A2P-75:G |
| 元件分類： | DRAM |
| 英文描述： | 4M X 16 SYNCHRONOUS DRAM, 5.4 ns, PDSO54 |
| 封裝： | 0.400 INCH, ROHS COMPLIANT, PLASTIC, TSOP2-54 |
| 文件頁數(shù)： | 6/72頁 |
| 文件大小： | 3455K |
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PDF: 09005aef80725c0b/Source: 09005aef806fc13c
Micron Technology, Inc., reserves the right to change products or specifications without notice.
64MSDRAM_2.fm - Rev. N 12/08 EN
14
2000 Micron Technology, Inc. All rights reserved.
64Mb: x4, x8, x16 SDRAM
Functional Description
The mode register must be loaded when all banks are idle, and the controller must wait
the specified time before initiating the subsequent operation. Violating either of these
requirements will result in unspecified operation.
Burst Length
READ and WRITE accesses to the SDRAM are burst oriented, with the burst length (BL)
being programmable, as shown in Figure 6 on page 15. The burst length determines the
maximum number of column locations that can be accessed for a given READ or WRITE
command. BL = 1, 2, 4, or 8 locations are available for both the sequential and the inter-
leaved burst types, and a full-page burst is available for the sequential mode. The full-
page burst is used in conjunction with the BURST TERMINATE command to generate
arbitrary burst lengths.
Reserved states cannot be used because unknown operation or incompatibility with
future versions may result.
When a READ or WRITE command is issued, a block of columns equal to the burst
length is effectively selected. All accesses for that burst take place within this block,
meaning that the burst will wrap within the block if a boundary is reached. The block is
uniquely selected by A1–A9 (x4), A1–A8 (x8) or A1–A7 (x16) when BL = 2; by A2–A9 (x4),
A2–A8 (x8) or A2–A7 (x16) when BL = 4; and by A3–A9 (x4), A3–A8 (x8) or A3–A7 (x16)
when BL = 8. The remaining (least significant) address bit(s) is (are) used to select the
starting location within the block. Full-page bursts wrap within the page if the boundary
is reached.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MT48LC4M16A2P75ITG | 制造商:Micron Technology Inc 功能描述: |
| MT48LC4M16A2P-75ITG | 制造商: 功能描述: |
| MT48LC4M16A2P-7E | 制造商:Micron Technology Inc 功能描述:SDRAM 64MBIT 133MHZ 54TSOP 制造商:Micron Technology Inc 功能描述:SDRAM, 64MBIT, 133MHZ, 54TSOP 制造商:Micron Technology Inc 功能描述:SDRAM, 64MBIT, 133MHZ, 54TSOP, Memory Type:DRAM - Synchronous, Memory Configurat |
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