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
文件頁數(shù)： 22/63頁
文件大?。?/td> 368K
代理商： HM5259805B-A6
HM5259165B/HM5259805B/HM5259405B-75/A6
Data Sheet E0118H10
22
Operation of the SDRAM
The following chapter shows operation example of the products below.
Organization
Input/output mask
CAS
latency
8-Mword
×
16-bit
×
4 bank
16-Mword
×
8-bit
×
4 bank
32-Mword
×
4-bit
×
4 bank
DQMU/DQML
2/3
DQM
DQM
Note:
The SDRAM should be used according to the product capability (See “Features”, “Pin Description”
and “AC Characteristics”).
Read/Write Operations
Bank active:
Before executing a read or write operation, the corresponding bank and the row address must be
activated by the bank active (ACTV) command. An interval of t
RCD
is required between the bank active
command input and the following read/write command input.
Read operation:
A read operation starts when a read command is input. Output buffer becomes Low-Z in
the (
CAS
Latency - 1) cycle after read command set. The SDRAM can perform a burst read operation.
The burst length can be set to 1, 2, 4, 8. The start address for a burst read is specified by the column address
and the bank select address (BA0/BA1) at the read command set cycle. In a read operation, data output starts
after the number of clocks specified by the
CAS
Latency. The
CAS
Latency can be set to 2 or 3.
When the burst length is 1, 2, 4, 8, the Dout buffer automatically becomes High-Z at the next clock after the
successive burst-length data has been output.
The
CAS
latency and burst length must be specified at the mode register.
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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