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參數(shù)資料
| 型號： | HYB18L128160BF |
| 廠商： | QIMONDA |
| 英文描述： | DRAMs for Mobile Applications 128-Mbit Mobile-RAM |
| 中文描述： | 針對移動應(yīng)用的DRAM 128 - Mbit的移動RAM |
| 文件頁數(shù)： | 38/55頁 |
| 文件大?。?/td> | 1399K |
| 代理商： | HYB18L128160BF |
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Data Sheet
38
Rev. 1.71, 2007-01
05282004-NZNK-8T0D
HY[B/E]18L128160B[C/F]-7.5
128-Mbit Mobile-RAM
Functional DescriptionCommands
2.4.9
AUTO REFRESH and SELF REFRESH
The Mobile-RAM requires a refresh of all rows in a rolling interval. Each refresh is generated in one of two ways:
by an explicit AUTO REFRESH command, or by an internally timed event in SELF REFRESH mode.
2.4.9.1
AUTO REFRESH
Figure 41
AUTO REFRESH Command
Auto Refresh is used during normal operation of the Mobile-RAM. The command is non persistent, so it must be
issued each time a refresh is required. A minimum row cycle time (t
RC
) is required between two AUTO REFRESH
commands. The same rule applies to any access command after the auto refresh operation. All banks must be
precharged prior to the AUTO REFRESH command.
The refresh addressing is generated by the internal refresh controller. This makes the address bits “Don’t Care”
during an AUTO REFRESH command. The Mobile-RAM requires AUTO REFRESH cycles at an average periodic
interval of 7.8
μ
s (max.). Partial array mode has no influence on auto refresh mode.
Figure 42
Auto Refresh
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HYB18L256160B | DRAMs for Mobile Applications 256-Mbit Mobile-RAM |
| HYMP112S64LMP8-C4 | DDR2 SDRAM SO-DIMM |
| HYMP112S64LMP8-C5 | DDR2 SDRAM SO-DIMM |
| HYMP112S64LMP8-E3 | BNC FEMALE TO RCA MALE COUPLER |
| HYMP112S64LMP8-E4 | DDR2 SDRAM SO-DIMM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HYB18L128160BF-7.5 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:BJAWBMSpecialty DRAMs Mobile-RAM |
| HYB18L128160BF-75 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:DRAMs for Mobile Applications |
| HYB18L256160B | 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:DRAMs for Mobile Applications 256-Mbit Mobile-RAM |
| HYB18L256160BC-7.5 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:BJAWBMSpecialty DRAMs Mobile-RAM |
| HYB18L256160BC-75 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:DRAMs for Mobile Applications |
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