參數(shù)資料
型號(hào): HM5425161B
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(yè)數(shù): 15/62頁(yè)
文件大?。?/td> 1016K
代理商: HM5425161B
HM5425161B, HM5425801B, HM5425401B Series
15
Function Truth Table
The following tables show the operations that are performed when each command is issued in each state of
the DDR SDRAM.
Function Truth Table (1)
Current state
CS
RAS CAS WE
Address
Command
Operation
Next state
Precharging*
2
H
×
×
×
×
×
×
DESL
NOP
ldle
L
H
H
H
NOP
NOP
ldle
L
H
H
L
BST
ILLEGAL*
12
L
H
L
H
BA, CA, A10
READ/READA
ILLEGAL*
12
L
H
L
L
BA, CA, A10
WRIT/WRITA
ILLEGAL*
12
L
L
H
H
BA, RA
ACTV
ILLEGAL*
12
L
L
H
L
BA, A10
PRE, PALL
NOP
ldle
L
L
L
×
×
×
×
×
×
ILLEGAL
Idle*
3
H
×
×
DESL
NOP
ldle
L
H
H
H
NOP
NOP
ldle
L
H
H
L
BST
ILLEGAL*
12
L
H
L
H
BA, CA, A10
READ/READA
ILLEGAL*
12
L
H
L
L
BA, CA, A10
WRIT/WRITA
ILLEGAL*
12
L
L
H
H
BA, RA
ACTV
ILLEGAL*
12
Activating
L
L
H
L
BA, A10
PRE, PALL
NOP
ldle
L
L
L
H
×
REF, SELF
Refresh/
Selfrefresh*
13
ldle/
Selfrefresh
L
L
L
L
MODE
MRS
Mode register set*
13
ldle
Refresh
(auto-refresh)*
4
H
×
×
×
×
DESL
NOP
ldle
L
H
H
H
×
×
×
×
NOP
NOP
ldle
H
H
H
L
BST
ILLEGAL
L
H
L
×
×
ILLEGAL
L
L
×
ILLEGAL
相關(guān)PDF資料
PDF描述
HM5425401B 256M SSTL_2 interface DDR SDRAM(256M SSTL_2接口 DDR 同步DRAM)
HM5425801B 256M SSTL_2 interface DDR SDRAM(256M SSTL_2接口 DDR 同步DRAM)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HM5425161B/801B/401B 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Series 256M SSTL-2 Interface DDR SDRAM 143 MHz/133 MHz/125
HM5425161BTT-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
HM5425161BTT-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
HM5425161BTT-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
HM5425401B 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