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参数资料
| 型号： | MT48H32M16LFB4-75B IT:C |
| 厂商： | Micron Technology Inc |
| 文件页数： | 41/85页 |
| 文件大小： | 0K |
| 描述： | IC SDRAM 512MB 54VFBGA |
| 标准包装： | 1,000 |
| 格式 - 存储器： | RAM |
| 存储器类型： | 移动 SDRAM |
| 存储容量： | 512M（32Mx16） |
| 速度： | 133MHz |
| 接口： | 并联 |
| 电源电压： | 1.7 V ~ 1.95 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 54-VFBGA |
| 供应商设备封装： | 54-VFBGA（8x8） |
| 包装： | 散装 |
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512Mb: 32 Meg x 16, 16 Meg x 32 Mobile SDRAM
Mode Register
Burst Length
Read and write accesses to the device are burst oriented, and the burst length (BL) is
programmable. The burst length determines the maximum number of column loca-
tions that can be accessed for a given READ or WRITE command. Burst lengths of 1, 2,
4, 8, or continuous locations are available for both the sequential and the interleaved
burst types, and a continuous page burst is available for the sequential type. The con-
tinuous page burst is used in conjunction with the BURST TERMINATE command to
generate arbitrary burst lengths.
Reserved states should not be used, as unknown operation or incompatibility with fu-
ture 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 wraps within the block when a boundary is reached. The block
is uniquely selected by A[8:1] when BL = 2, A[8:2] when BL = 4, and A[8:3] when BL = 8.
The remaining (least significant) address bit(s) is (are) used to select the starting loca-
tion within the block. Continuous page bursts wrap within the page when the boundary
is reached.
Burst Type
Accesses within a given burst can be programmed to be either sequential or interleaved;
this is referred to as the burst type and is selected via bit M3.
The ordering of accesses within a burst is determined by the burst length, the burst
type, and the starting column address.
PDF: 09005aef8459c827
512mb_mobile_sdram_y67m_at.pdf – Rev. B 3/11 EN
41
Micron Technology, Inc. reserves the right to change products or specifications without notice.
? 2011 Micron Technology, Inc. All rights reserved.
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