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): 31/62頁
文件大小: 1016K
代理商: HM5425401B
HM5425161B, HM5425801B, HM5425401B Series
31
A Write command to the consecutive Write command Interval:
Destination row of the
consecutive write command
Bank
address
Row
address
State
Operation
1. Same
Same
ACTIVE
The consecutive write can be performed after an interval of no less
than 1 cycle to interrupt the preceding write operation.
2. Same
Different
Precharge the bank to interrupt the preceding write operation. t
after
the precharge command, issue the ACTV command. t
after the
ACTV command, the consecutive write command can be issued. See
‘A write command to the consecutive precharge interval’ section.
3. Different
Any
ACTIVE
The consecutive write can be performed after an interval of no less
than 1 cycle to interrupt the preceding write operation.
IDLE
Precharge the bank without interrupting the preceding write operation.
t
after the precharge command, issue the ACTV command. t
after
the ACTV command, the consecutive write command can be issued.
WRITE to WRITE Command Interval (same ROW address in the same bank)
"
#
!
A0
A1
B0
B1
B2
B3
CLK
CLK
Address
BA
Din
Command
t1
t0
t2
t3
t4
t5
t6
t7
t8
Bank0
Active
#
!
Burst length = 4
Bank0
NOP
DQS,
DQSU/DQSL
ACTV
NOP
WRIT
Row
Column A
WRIT
Column B
Column = A
Write
Column = B
Write
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
HM6116LP-3 2048-word X 8bit High Speed CMOS Static RAM
HM6116LP-4 2048-word X 8bit High Speed CMOS Static RAM
HM6116LFP-2 2048-word X 8bit High Speed CMOS Static RAM
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