W9425G8EH Datasheet, PDF (19/53 Pages) Winbond – 8M × 4 BANKS × 8 BITS DDR SDRAM

W9425G8EH
Function Truth Table, continued
CURRENT
STATE
CS
RAS CAS
H
X
X
L
H
H
L
H
H
Read with
Auto-
precharge
L
H
L
L
H
L
L
L
H
L
L
H
L
L
L
L
L
L
H
X
X
L
H
H
L
H
H
Write with
Auto-
precharge
L
H
L
L
H
L
L
L
H
L
L
H
L
L
L
L
L
L
H
X
X
L
H
H
L
H
H
L
H
L
Precharging
L
H
L
L
L
H
L
L
H
L
L
L
L
L
L
H
X
X
L
H
H
L
H
H
Row
Activating
L
H
L
L
H
L
L
L
H
L
L
H
L
L
L
L
L
L
WE ^ADDRESS
COMMAND
XX
DSL
HX
NOP
LX
BST
H BS, CA, A10 READ/READA
L BS, CA, A10 WRIT/WRITA
H BS, RA
ACT
L BS, A10
PRE/PREA
HX
AREF/SELF
L Op-Code
MRS/EMRS
XX
DSL
HX
NOP
LX
BST
H BS, CA, A10 READ/READA
L BS, CA, A10 WRIT/WRITA
H BS, RA
ACT
L BS, A10
PRE/PREA
HX
AREF/SELF
L Op-Code
MRS/EMRS
XX
DSL
HX
NOP
LX
BST
H BS, CA, A10 READ/READA
L BS, CA, A10 WRIT/WRITA
H BS, RA
ACT
L BS, A10
PRE/PREA
HX
AREF/SELF
L Op-Code
MRS/EMRS
XX
DSL
HX
NOP
LX
BST
H BS, CA, A10 READ/READA
L BS, CA, A10 WRIT/WRITA
H BS, RA
ACT
L BS, A10
PRE/PREA
HX
AREF/SELF
L Op-Code
MRS/EMRS
ACTION
Continue burst to end
Continue burst to end
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
Continue burst to end
Continue burst to end
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOP-> Idle after tRP
NOP-> Idle after tRP
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
Idle after tRP
ILLEGAL
ILLEGAL
NOP-> Row active after tRCD
NOP-> Row active after tRCD
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOTES
3
3
3
3
3
3
3
3
3
3
3
- 19 -
Publication Release Date: Jul. 04, 2008
Revision A01