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參數(shù)資料
| 型號(hào)： | HB52E169EN |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 64 MB Unbuffered SDRAM DIMM(64MB 未緩沖同步DRAM DIMM) |
| 中文描述： | 64 MB的無緩沖SDRAM的內(nèi)存（64MB的未緩沖同步的DRAM內(nèi)存） |
| 文件頁數(shù)： | 32/64頁 |
| 文件大?。?/td> | 2741K |
| 代理商： | HB52E169EN |
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HB52E88EM-F, HB52E89EM-F, HB52E168EN-F, HB52E169EN-F
32
From IDLE state, command operation
To [DESL], [NOP], [BST], [PRE] or [PALL]:
These commands result in no operation.
To [ACTV]:
The bank specified by the address pins and the ROW address is activated.
To [REF], [SELF]:
The SDRAM module enters refresh mode (auto-refresh or self-refresh).
To [MRS]:
The SDRAM module enters the mode register set cycle.
From ROW ACTIVE state, command operation
To [DESL], [NOP] or [BST]:
These commands result in no operation.
To [READ], [READ A]:
A read operation starts. (However, an interval of t
RCD
is required.)
To [WRIT], [WRIT A]:
A write operation starts. (However, an interval of t
RCD
is required.)
To [ACTV]:
This command makes the other bank active. (However, an interval of t
RRD
is required.) At-
tempting to make the currently active bank active results in an illegal command.
To [PRE], [PALL]:
These commands set the SDRAM module to precharge mode. (However, an interval
of t
RAS
is required.)
From READ state, command operation
To [DESL], [NOP]:
These commands continue read operations until the burst operation is completed.
To [BST]:
This command stops a full-page burst.
To [READ], [READ A]:
Data output by the previous read command continues to be output. After CE la-
tency, the data output resulting from the next command will start.
To [WRIT], [WRIT A]:
These commands stop a burst read, and start a write cycle.
To [ACTV]:
This command makes other banks bank active. (However, an interval of t
RRD
is required.) At-
tempting to make the currently active bank active results in an illegal command.
To [PRE], [PALL]:
These commands stop a burst read, and the SDRAM module enters precharge mode.
From READ with AUTO-PRECHARGE state, command operation
To [DESL], [NOP]:
These commands continue read operations until the burst operation is completed, and
the SDRAM module then enters precharge mode.
To [ACTV]:
This command makes other banks bank active. (However, an interval of t
RRD
is required.) At-
tempting to make the currently active bank active results in an illegal command.
From WRITE state, command operation
To [DESL], [NOP]:
These commands continue write operations until the burst operation is completed.
To [BST]:
This command stops a full-page burst.
To [READ], [READ A]:
These commands stop a burst and start a read cycle.
To [WRIT], [WRIT A]:
These commands stop a burst and start the next write cycle.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HB52E88EM | 64 MB Unbuffered SDRAM DIMM(64MB 未緩沖同步DRAM DIMM) |
| HB52E89EM | 64 MB Unbuffered SDRAM DIMM(64MB 未緩沖同步DRAM DIMM) |
| HB52E169E12 | 128 MB Registered SDRAM DIMM(128 MB 寄存同步DRAM DIMM) |
| HB52E648EN | 512 MB Unbuffered SDRAM DIMM(512 MB 未緩沖同步DRAM DIMM) |
| HB52E649EN | 512 MB Unbuffered SDRAM DIMM(512 MB 未緩沖同步DRAM DIMM) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HB52E169EN-B6 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x72 SDRAM Module |
| HB52E328EM-A6B | 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256MB Unbuffered SDRAM DIMM |
| HB52E328EM-B6B | 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256MB Unbuffered SDRAM DIMM |
| HB52E329EM-A6B | 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256MB Unbuffered SDRAM DIMM |
| HB52E329EM-B6B | 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256MB Unbuffered SDRAM DIMM |
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