參數(shù)資料
型號(hào)： HM5259805B-A6
廠商： Elpida Memory, Inc.
英文描述： PT 32C 32#20 PIN PLUG
中文描述： 512M LVTTL接口SDRAM的133 MHz/100 MHz的8 Mword】16位】4-bank/16-Mword】8位】4銀行/ 32 Mword】4位】4銀行PC/133，電腦/ 100內(nèi)存
文件頁(yè)數(shù)： 12/63頁(yè)
文件大?。?/td> 368K
代理商： HM5259805B-A6
HM5259165B/HM5259805B/HM5259405B-75/A6
Data Sheet E0118H10
12
DQM Truth Table
(HM5259165B)
CKE
Command
Symbol
n - 1
n
DQMU
DQML
Upper byte (DQ8 to DQ15) write enable/output enable ENBU
H
×
×
×
×
L
×
Lower byte (DQ0 to DQ7) write enable/output enable
ENBL
H
×
L
Upper byte (DQ8 to DQ15) write inhibit/output disable MASKU
H
H
×
Lower byte (DQ0 to DQ7) write inhibit/output disable
H: V
IH
. L: V
IL
.
×
: V
IH
or V
IL
.
Write: I
DID
is needed.
Read: I
DOD
is needed.
MASKL
H
×
H
Note:
DQM Truth Table
(HM5259805B/HM5259405B)
CKE
Command
Symbol
n - 1
n
DQM
Write enable/output enable
ENB
H
×
×
L
Write inhibit/output disable
H: V
IH
. L: V
IL
.
×
: V
IH
or V
IL
.
Write: I
DID
is needed.
Read: I
DOD
is needed.
MASK
H
H
Note:
The SDRAM can mask input/output data by means of DQM, DQMU/DQML.
DQMU masks the upper byte and DQML masks the lower byte. (HM5259165B)
During reading, the output buffer is set to Low-Z by setting DQM, DQMU/DQML to Low, enabling data
output. On the other hand, when DQM, DQMU/DQML is set to High, the output buffer becomes High-Z,
disabling data output.
During writing, data is written by setting DQM, DQMU/DQML to Low. When DQM, DQMU/DQML is set
to High, the previous data is held (the new data is not written). Desired data can be masked during burst read
or burst write by setting DQMU/DQML. For details, refer to the DQM, DQMU/DQML control section of the
SDRAM operating instructions.
相關(guān)PDF資料
PDF描述
HM5264405D 64M LVTTL interface SDRAM(64M LVTTL接口同步DRAM)
HM5264165D 64M LVTTL interface SDRAM(64M LVTTL接口同步DRAM)
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HM5259805BTD-75 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:512M LVTTL interface SDRAM 133 MHz/100 MHz 8-Mword 】 16-bit 】 4-bank/16-Mword 】 8-bit 】 4-bank /32-Mword 】 4-bit 】 4-bank PC/133, PC/100 SDRAM
HM5259805BTD-A6 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:512M LVTTL interface SDRAM 133 MHz/100 MHz 8-Mword 】 16-bit 】 4-bank/16-Mword 】 8-bit 】 4-bank /32-Mword 】 4-bit 】 4-bank PC/133, PC/100 SDRAM
HM5264165 制造商:未知廠家 制造商全稱:未知廠家 功能描述:HM5264805 HM52654405 Series Synchronous Dynamic RAM
HM5264165-10 制造商: 功能描述: 制造商:undefined 功能描述:
HM5264165A60 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:64M LVTTL interface SDRAM 133 MHz/100 MHz
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