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參數(shù)資料
型號: W946432AD
廠商: WINBOND ELECTRONICS CORP
英文描述: 512K X 4 BANKS X 32 BITS DDR SDRAM
中文描述: 為512k × 4銀行× 32位DDR內(nèi)存
文件頁數(shù): 14/40頁
文件大小: 462K
代理商: W946432AD
W946432AD
14
Function TRUTH TABLE (NOTE 1)
CURRENT
STATE
CS
RAS
CAS
WE Address
Command
ACTION
NOTE
H
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
X
H
H
H
L
L
L
L
X
H
H
H
L
L
L
L
X
H
H
H
H
L
L
L
L
X
H
H
H
H
L
L
L
L
X
H
H
H
H
L
L
L
L
X
H
H
H
H
L
L
L
L
X
H
L
L
H
H
L
L
X
H
L
L
H
H
L
L
X
H
H
L
L
H
H
L
L
X
H
H
L
L
H
H
L
L
X
H
H
L
L
H
H
L
L
X
H
H
L
L
H
H
L
L
X
X
H
L
H
L
H
L
X
X
H
L
H
L
H
L
X
H
L
H
L
H
L
H
L
X
H
L
H
L
H
L
H
L
X
H
L
H
L
H
L
H
L
X
H
L
H
L
H
L
H
L
X
X
DSL
NOP
NOP
NOP, BST
BA, CA,A8 Read, Read A ILLEGAL
BA, CA,A8 Write, Write A ILLEGAL
BA, RA
ACT
BA, A8
PRE, PRE A NOP
X
AREF, SREF Refresh or Self refresh
Op-Code
MRS, EMRS Mode register accessing
X
DSL
X
NOP, BST
BA, CA,A8 Read, Read A READ (start READ burst)
BA, CA,A8 Write, Write A WRITE (start WRITE burst)
BA, RA
ACT
ILLEGAL
BA, A8
PRE, PRE A PRECHARGE
X
AREF, SREF ILLEGAL
Op-Code
MRS, EMRS ILLEGAL
X
DSL
Continue burst to end
X
NOP
Continue burst to end
X
BST
Burst stop
BA, CA,A8 Read, Read A Term burst, start new READ burst
BA, CA,A8 Write, Write A ILLEGAL
BA, RA
ACT
ILLEGAL
BA, A8
PRE, PRE A Term burst, PRECHARGE
X
AREF, SREF ILLEGAL
Op-Code
MRS, EMRS ILLEGAL
X
DSL
Continue burst to end
X
NOP
Continue burst to end
X
BST
ILLEGAL
BA, CA,A8 Read, Read A ILLEGAL
BA, CA,A8 Write, Write A Term burst, start new READ burst
BA, RA
ACT
ILLEGAL
BA, A8
PRE, PRE A Term burst, PRECHARGE
X
AREF, SREF ILLEGAL
Op-Code
MRS, EMRS ILLEGAL
X
DSL
Continue burst to end
X
NOP
Continue burst to end
X
BST
ILLEGAL
BA, CA,A8 Read, Read A ILLEGAL
BA, CA,A8 Write, Write A ILLEGAL
BA, RA
ACT
ILLEGAL
BA, A8
PRE, PRE A ILLEGAL
X
AREF, SREF ILLEGAL
Op-Code
MRS, EMRS ILLEGAL
X
DSL
Continue burst to end
X
NOP
Continue burst to end
X
BST
ILLEGAL
BA, CA,A8 Read, Read A ILLEGAL
BA, CA,A8 Write, Write A ILLEGAL
BA, RA
ACT
ILLEGAL
BA, A8
PRE, PRE A ILLEGAL
X
AREF, SREF ILLEGAL
Op-Code
MRS, EMRS ILLEGAL
3
3
2
2
4
4
3
5
6
3
3
6,7
3
8
ACTIVE (select and activate row)
Idle
NOP
NOP
Row Active
Read
Write
Read with
Auto
rpecharge
Write with
Auto
precharge
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