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參數(shù)資料

型號(hào)：	HB52RF329E2
廠商：	Hitachi,Ltd.
英文描述：	256 MB Registered SDRAM DIMM(256 MB 寄存同步DRAM DIMM)
中文描述：	注冊(cè)使用256 MB SDRAM的內(nèi)存（256 MB的寄存同步的DRAM內(nèi)存）
文件頁(yè)數(shù)：	49/64頁(yè)
文件大?。?/td>	869K
代理商：	HB52RF329E2

HB52RF329E2-75F

Mode register set to Bank-active command interval:

The interval between setting the mode register and

executing a bank-active command must be no less than l

RSA

Command

Address

Mode

Bank

Active

MRS

ACTV

RSA

BS & ROW

CODE

DQMB Control

The DQMB mask the DQ data. The timing of DQMB is different during reading and writing.

Reading:

When data is read, the output buffer can be controlled by DQMB. By setting DQMB to Low, the

output buffer becomes Low-Z, enabling data output. By setting DQMB to High, the output buffer becomes

High-Z, and the corresponding data is not output. However, internal reading operations continue. The

latency of DQMB during reading is 3 clocks.

Writing:

Input data can be masked by DQMB. By setting DQMB to Low, data can be written. In addition,

when DQMB is set to High, the corresponding data is not written, and the previous data is held. The latency

of DQMB during writing is 1 clock.

相關(guān)PDF資料	PDF描述
HB52RF648DC-B	512 MB Unbuffered SDRAM S.O.DIMM 64-Mword 】 64-bit, 133/100 MHz Memory Bus, 2-Bank Module (16 pcs of 32 M 】 8 components) PC133/100 SDRAM
HB52RD648DC-B	512 MB Unbuffered SDRAM S.O.DIMM 64-Mword 】 64-bit, 133/100 MHz Memory Bus, 2-Bank Module (16 pcs of 32 M 】 8 components) PC133/100 SDRAM
HB52RF649DC	512MB Unbuffered SDRAM S.O.DIMM
HB52RD649DC-A6B	512MB Unbuffered SDRAM S.O.DIMM
HB52RD649DC-A6BL	512MB Unbuffered SDRAM S.O.DIMM

相關(guān)代理商/技術(shù)參數(shù)	參數(shù)描述
HB52RF329E2-75F	制造商:未知廠家制造商全稱:未知廠家功能描述:x72 SDRAM Module
HB52RF648DC-75B	制造商:未知廠家制造商全稱:未知廠家功能描述:x64 SDRAM Module
HB52RF648DC-75BL	制造商:未知廠家制造商全稱:未知廠家功能描述:x64 SDRAM Module
HB52RF648DC-B	制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:512 MB Unbuffered SDRAM S.O.DIMM 64-Mword 】 64-bit, 133/100 MHz Memory Bus, 2-Bank Module (16 pcs of 32 M 】 8 components) PC133/100 SDRAM
HB52RF649DC	制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:512MB Unbuffered SDRAM S.O.DIMM

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