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W9725G6KB25A Datasheet(HTML) 35 Page - Winbond

Part No. W9725G6KB25A
Description  DLL aligns DQ and DQS transitions with clock, Data masks (DM) for write data, Write Data Mask
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Maker  WINBOND [Winbond]
Homepage  http://www.winbond.com
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W9725G6KB25A Datasheet(HTML) 35 Page - Winbond

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W9725G6KB
Publication Release Date: Sep. 03, 2012
- 35 -
Revision A03
Function Truth Table, continued
CURRENT
STATE
CS
RAS
CAS
WE
ADDRESS
COMMAND
ACTION
NOTES
Write
Recovering
H
X
X
X
X
DSL
NOP-> Bank active after tWR
L
H
H
H
X
NOP
NOP-> Bank active after tWR
L
H
L
H
BA, CA, A10
READ/READA
ILLEGAL
1
L
H
L
L
BA, CA, A10
WRIT/WRITA
New write
L
L
H
H
BA, RA
ACT
ILLEGAL
1
L
L
H
L
BA, A10
PRE/PREA
ILLEGAL
1
L
L
L
H
X
REF/SELF
ILLEGAL
L
L
L
L
Op-Code
MRS/EMRS
ILLEGAL
Write
Recovering
with Auto-
precharge
H
X
X
X
X
DSL
NOP-> Precharge after tWR
L
H
H
H
X
NOP
NOP-> Precharge after tWR
L
H
L
H
BA, CA, A10
READ/READA
ILLEGAL
1
L
H
L
L
BA, CA, A10
WRIT/WRITA
ILLEGAL
1
L
L
H
H
BA, RA
ACT
ILLEGAL
1
L
L
H
L
BA, A10
PRE/PREA
ILLEGAL
1
L
L
L
H
X
REF/SELF
ILLEGAL
L
L
L
L
Op-Code
MRS/EMRS
ILLEGAL
Refreshing
H
X
X
X
X
DSL
NOP-> Idle after tRC
L
H
H
H
X
NOP
NOP-> Idle after tRC
L
H
L
H
BA, CA, A10
READ/READA
ILLEGAL
L
H
L
L
BA, CA, A10
WRIT/WRITA
ILLEGAL
L
L
H
H
BA, RA
ACT
ILLEGAL
L
L
H
L
BA, A10
PRE/PREA
ILLEGAL
L
L
L
H
X
REF/SELF
ILLEGAL
L
L
L
L
Op-Code
MRS/EMRS
ILLEGAL
Mode
Register
Accessing
H
X
X
X
X
DSL
NOP-> Idle after tMRD
L
H
H
H
X
NOP
NOP-> Idle after tMRD
L
H
L
H
BA, CA, A10
READ/READA
ILLEGAL
L
H
L
L
BA, CA, A10
WRIT/WRITA
ILLEGAL
L
L
H
H
BA, RA
ACT
ILLEGAL
L
L
H
L
BA, A10
PRE/PREA
ILLEGAL
L
L
L
H
X
REF/SELF
ILLEGAL
L
L
L
L
Op-Code
MRS/EMRS
ILLEGAL
Notes:
1. This command may be issued for other banks, depending on the state of the banks.
2. All banks must be in
“IDLE”.
3. Read or Write burst interruption is prohibited for burst length of 4 and only allowed for burst length of 8. Burst read/write can
only be interrupted by another read/write with 4 bit burst boundary. Any other case of read/write interrupt is not allowed.
Remark: H = High level, L = Low level, X = High or Low level (
Don‟t Care), V = Valid data.


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