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參數(shù)資料
型號(hào): AD484M1644VTA-10L
廠商: Electronic Theatre Controls, Inc.
英文描述: Ascend Semiconductor Corporation(64Mb SDRAM)
中文描述: 登半導(dǎo)體公司(64MB內(nèi)存)
文件頁(yè)數(shù): 10/20頁(yè)
文件大小: 85K
代理商: AD484M1644VTA-10L
Preliminary
10
64Mb SDRAM
Ascend Semiconductor Corporation
Command
Symbol
CKE
Ignore Command
No operation
Burst stop
Read
Read with auto pre-charge
Write
Write with auto pre-charge
Bank activate
Pre-charge select bank
Pre-charge all banks
Mode register set
DESL
NOP
BSTH
READ
READA
WRIT
WRITA
ACT
PRE
PALL
MRS
Truth Table
1. Command Truth Table ( AD484M1644VTA )
H
H
H
H
H
H
H
H
H
H
H
X
X
X
X
X
X
X
X
X
X
X
n-1
n
/CS
H
L
L
L
L
L
L
L
L
L
L
/RAS
X
H
H
H
H
H
L
L
L
L
L
/CAS
X
H
H
L
L
L
H
H
H
H
L
/WE
X
H
L
H
H
L
H
H
L
L
L
BA0,
BA1
X
X
X
V
V
V
V
V
V
X
L
A10
X
X
X
L
H
L
H
V
L
H
L
A11,
A9~A0
X
X
X
V
V
V
V
V
X
X
V
Note :
H = High level, L = Low level, X = High or Low level (Don't care), V = Valid data input
Command
Symbol
CKE
Data write / output enable
Data mask / output disable
Upper byte write enable / output enable
Read
Read with auto pre-charge
Write
Write with auto pre-charge
Bank activate
Pre-charge select bank
Pre-charge all banks
Mode register set
ENB
MASK
BSTH
READ
READA
WRIT
WRITA
ACT
PRE
PALL
MRS
2. DQM Truth Table
H
H
H
H
H
H
H
H
H
H
H
X
X
X
X
X
X
X
X
X
X
X
n-1
n
/CS
H
L
L
L
L
L
L
L
L
L
L
Note :
H = High level, L = Low level, X = High or Low level (Don't care), V = Valid data input
Command
Symbol
CKE
Activating
Any
Clock suspend
Idle
Idle
3. CKE Truth Table
H
L
L
H
H
L
L
L
L
H
H
L
H
H
n-1
n
/CS
X
X
X
L
L
L
H
/RAS
X
X
X
L
L
H
X
/CAS
X
X
X
L
L
H
X
/WE
X
X
X
H
H
H
X
Addr.
X
X
X
X
X
X
X
REF
SELF
Self refresh
Idle
Power down
H
L
L
H
X
X
X
X
X
X
X
X
X
X
Remark
H = High level, L = Low level, X = High or Low level (Don't care)
Command
Clock suspend mode entry
Clock suspend mode
Clock suspend mode exit
CBR refresh command
Self refresh entry
Self refresh exit
Power down entry
Power down exit
相關(guān)PDF資料
PDF描述
AD484M1644VTA-10LI Ascend Semiconductor Corporation(64Mb SDRAM)
AD484M1644VTA-15 Ascend Semiconductor Corporation(64Mb SDRAM)
AD484M1644VTA Ascend Semiconductor Corporation(64Mb SDRAM)
AD484M1644VTA-5.5 Ascend Semiconductor Corporation(64Mb SDRAM)
AD484M1644VTA-6 Ascend Semiconductor Corporation(64Mb SDRAM)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD484M1644VTA-10LI 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Ascend Semiconductor Corporation(64Mb SDRAM)
AD484M1644VTA-15 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Ascend Semiconductor Corporation(64Mb SDRAM)
AD484M1644VTA-5.5 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Ascend Semiconductor Corporation(64Mb SDRAM)
AD484M1644VTA-6 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Ascend Semiconductor Corporation(64Mb SDRAM)
AD484M1644VTA-7 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Ascend Semiconductor Corporation(64Mb SDRAM)
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