參數(shù)資料
型號: HM5425401B
廠商: Hitachi,Ltd.
英文描述: 256M SSTL_2 interface DDR SDRAM(256M SSTL_2接口 DDR 同步DRAM)
中文描述: 256M DDR SDRAM的接口SSTL_2(256M SSTL_2接口的DDR同步DRAM)的
文件頁數(shù): 28/62頁
文件大?。?/td> 1016K
代理商: HM5425401B
HM5425161B, HM5425801B, HM5425401B Series
28
Write with auto-precharge:
The precharge is automatically performed after completing a burst write
operation. The precharge operation is started t
WPD
(= BL/ 2 + 3) cycles after WRITA command issued. t
RCD
for WRITA should be determined so that t
RC
(ACTV to ACTV) spec. is obeyed when WRITA is issued
successively after a bank active command, that is t
RCD
(WRITA)
t
RC
(min.)-t
RP
(min.)-t
WPD
. A column
command to the other active command can be issued the next cycle after the internal precharge command
issued. Write with auto-precharge command does not limit row commands execution for other bank.
Burst Write
(Burst Length = 4)
D1
D2
D3
D4
CLK
CLK
DQ
Command
DM,
DMU/DML
t
RAS
(min)
t
RCD
(min)
#
t
RP
DQS,
DQSU/DQSL
ACTV
WRITA
ACTV
BL/2 + 3 cycles
t
WPD
Note: Internal auto-precharge starts at the timing indicated by " ".
Burst length = 4
NOP
NOP
相關(guān)PDF資料
PDF描述
HM5425801B 256M SSTL_2 interface DDR SDRAM(256M SSTL_2接口 DDR 同步DRAM)
HM6116LP-2 2048-word X 8bit High Speed CMOS Static RAM
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HM6116LP-4 2048-word X 8bit High Speed CMOS Static RAM
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HM5425401BTT-10 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256M SSTL_2 interface DDR SDRAM 143 MHz/133 MHz/125 MHz/100 MHz 4-Mword 】 16-bit 】 4-bank/8-Mword 】 8-bit 】 4-bank/ 16-Mword 】 4-bit 】 4-bank
HM5425401BTT-75A 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256M SSTL_2 interface DDR SDRAM 143 MHz/133 MHz/125 MHz/100 MHz 4-Mword 】 16-bit 】 4-bank/8-Mword 】 8-bit 】 4-bank/ 16-Mword 】 4-bit 】 4-bank
HM5425401BTT-75B 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256M SSTL_2 interface DDR SDRAM 143 MHz/133 MHz/125 MHz/100 MHz 4-Mword 】 16-bit 】 4-bank/8-Mword 】 8-bit 】 4-bank/ 16-Mword 】 4-bit 】 4-bank
HM5425801B 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256M SSTL_2 interface DDR SDRAM 143 MHz/133 MHz/125 MHz/100 MHz 4-Mword 】 16-bit 】 4-bank/8-Mword 】 8-bit 】 4-bank/ 16-Mword 】 4-bit 】 4-bank
HM5425801BTT-10 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256M SSTL_2 interface DDR SDRAM 143 MHz/133 MHz/125 MHz/100 MHz 4-Mword 】 16-bit 】 4-bank/8-Mword 】 8-bit 】 4-bank/ 16-Mword 】 4-bit 】 4-bank