參數(shù)資料
型號: HB52F89EM
廠商: Hitachi,Ltd.
英文描述: 64 MB Unbuffered SDRAM DIMM(64 MB 未緩沖同步DRAM DIMM)
中文描述: 64 MB的無緩沖SDRAM的內(nèi)存(64 MB的未緩沖同步的DRAM內(nèi)存)
文件頁數(shù): 57/71頁
文件大?。?/td> 906K
代理商: HB52F89EM
HB52F88EM-75F, HB52F89EM-75F, HB52F168EN-75F, HB52F169EN-
57
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 laten-
cy of DQMB during reading is 2 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 0 clock.
Reading
CK
Command
Address
Mode
Register Set
Bank
Active
MRS
ACTV
I
RSA
BS & ROW
CODE
CK
Dout
out 0
out 1
l = 2 Latency
out 3
DQMB
High-Z
相關(guān)PDF資料
PDF描述
HB52R1289E22 1 GB Registered SDRAM DIMM 1 GB Registered SDRAM DIMM (36 pcs of 64 M 】 4 Components) PC100 SDRAM
HB52R1289E22-A6B 1 GB Registered SDRAM DIMM 1 GB Registered SDRAM DIMM (36 pcs of 64 M 】 4 Components) PC100 SDRAM
HB52R1289E22-B6B 1 GB Registered SDRAM DIMM 1 GB Registered SDRAM DIMM (36 pcs of 64 M 】 4 Components) PC100 SDRAM
HB52R1289E22 1 GB Registered SDRAM DIMM(1GB 寄存同步DRAM DIMM)
HB52R168DB 128 MB Unbuffered SDRAM S.O.DIMM(128 MB 未緩沖同步DRAM S.O.DIMM)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HB52R1289E22 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:1 GB Registered SDRAM DIMM 1 GB Registered SDRAM DIMM (36 pcs of 64 M 】 4 Components) PC100 SDRAM
HB52R1289E22-A6B 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:1 GB Registered SDRAM DIMM 1 GB Registered SDRAM DIMM (36 pcs of 64 M 】 4 Components) PC100 SDRAM
HB52R1289E22-B6B 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:1 GB Registered SDRAM DIMM 1 GB Registered SDRAM DIMM (36 pcs of 64 M 】 4 Components) PC100 SDRAM
HB52R1289E2-A6A 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x72 SDRAM Module
HB52R1289E2-B6A 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x72 SDRAM Module