參數(shù)資料
型號: EDS6416CHBH
廠商: Elpida Memory, Inc.
英文描述: 64M bits SDRAM (4M words x 16 bits)
中文描述: 6400位的SDRAM(4分字× 16位)
文件頁數(shù): 38/49頁
文件大?。?/td> 716K
代理商: EDS6416CHBH
EDS6416AHBH, EDS6416CHBH
DQM Control
The UDQM and LDQM mask the upper and lower bytes of the DQ data, respectively. The timing of UDQM and
LDQM is different during reading and writing.
Data Sheet E0442E40 (Ver. 4.0)
38
Reading
When data is read, the output buffer can be controlled by UDQM and LDQM. By setting UDQM and LDQM to Low,
the output buffer becomes Low-Z, enabling data output. By setting UDQM and LDQM to High, the output buffer
becomes High-Z, and the corresponding data is not output. However, internal reading operations continue. The
latency of UDQM and LDQM during reading is 2 clocks.
Writing
Input data can be masked by UDQM and LDQM. By setting DQM to Low, data can be written. In addition, when
UDQM and LDQM are set to High, the corresponding data is not written, and the previous data is held. The latency
of UDQM and LDQM during writing is 0 clock.
CLK
DQ
out 0
out 1
l
DOD = 2 Latency
out 3
UDQM
LDQM
High-Z
Reading
CLK
DQ
in 0
in 1
l
DID = 0 Latency
in 3
UDQM
LDQM
Writing
相關(guān)PDF資料
PDF描述
EDS6416CHTA 64M bits SDRAM (4M words x 16 bits)
EDS6416CHTA-75-E 64M bits SDRAM (4M words x 16 bits)
EDS6416AHBH 64M bits SDRAM (4M words x 16 bits)
EDS6416AHBH-6B-E Circular Connector; No. of Contacts:39; Series:MS27468; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:21; Circular Contact Gender:Socket; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:21-39 RoHS Compliant: No
EDS6416AHBH-75-E 64M bits SDRAM (4M words x 16 bits)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EDS6416CHBH-75-E 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:64M bits SDRAM (4M words x 16 bits)
EDS6416CHTA 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:64M bits SDRAM (4M words x 16 bits)
EDS6416CHTA-75-E 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:64M bits SDRAM (4M words x 16 bits)
EDS6416GHTA 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:64M bits SDRAM
EDS6416GHTA-10-E 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:64M bits SDRAM