參數(shù)資料
型號(hào)： HM5264165D
廠商： Hitachi,Ltd.
英文描述： 64M LVTTL interface SDRAM(64M LVTTL接口同步DRAM)
中文描述： 6400 LVTTL接口的SDRAM（6400 LVTTL接口同步的DRAM）
文件頁(yè)數(shù)： 40/67頁(yè)
文件大?。?/td> 615K
代理商： HM5264165D
HM5264165D-A60, HM5264805D-A60, HM5264405D-A60
40
DQM Control
The DQMU and DQML mask the upper and lower bytes of the DQ data, respectively. The timing of
DQMU/DQML is different during reading and writing.
Reading:
When data is read, the output buffer can be controlled by DQM, DQMU/DQML. By setting
DQM, DQMU/DQML to Low, the output buffer becomes Low-Z, enabling data output. By setting DQM,
DQMU/DQML to High, the output buffer becomes High-Z, and the corresponding data is not output.
However, internal reading operations continue. The latency of DQM, DQMU/DQML during reading is 2
clocks.
Writing:
Input data can be masked by DQM, DQMU/DQML. By setting DQM, DQMU/DQML to Low,
data can be written. In addition, when DQM, DQMU/DQML is set to High, the corresponding data is not
written, and the previous data is held. The latency of DQM, DQMU/DQML during writing is 0 clock.
Reading
CLK
DQ (output)
out 0
out 1
l = 2 Latency
out 3
DQM,
DQMU/DQML
High-Z
Writing
CLK
DQ (input)
in 0
in 1
l = 0 Latency
in 3
DQM,
DQMU/DQML
相關(guān)PDF資料
PDF描述
HM5264805D 64M LVTTL interface SDRAM(64M LVTTL接口同步DRAM)
HM5264405F 64M LVTTL interface SDRAM(64M LVTTL接口同步DRAM)
HM5264805F-75 Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:PT06; No. of Contacts:36; Connector Shell Size:22; Connecting Termination:Solder; Circular Shell Style:Straight Plug; Body Style:Straight
HM5264805F-A60 Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:PT06; No. of Contacts:36; Connector Shell Size:22; Connecting Termination:Solder; Circular Shell Style:Straight Plug; Body Style:Straight
HM5264805F-B60 Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:PT06; Number of Contacts:36; Connector Shell Size:22; Connecting Termination:Solder; Circular Shell Style:Straight Plug; Body Style:Straight
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HM5264165D-B60/4805D-B60/4405D-B60 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:64M LVTTL Interface SDRAM 100 MHz 1-Mword X 1
HM5264165DLTT-80 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:x16 SDRAM
HM5264165DLTT-B60 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:x16 SDRAM
HM5264165DTT-80 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:x16 SDRAM
HM5264165DTT-B60 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:x16 SDRAM
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