W942508CH Datasheet, PDF (17/47 Pages) Winbond – 8M x 4 BANKS x 8 BIT DDR SDRAM

W942508CH
Function Truth Table, continued
CURRENT
STATE
Read with
Auto
Prechange
Write with
Auto
Precharge
Precharging
Row
Activating
CS RAS ^CAS WE _ADDRESS
HX
X
XX
LH
H
HX
LH
H
LX
LH
L
H BS, CA, A10
LH
L
L BS, CA, A10
L
L
H
H BS, RA
L
L
H
L BS, A10
L
L
L
HX
L
L
L
L Op-Code
HX
X
XX
LH
H
HX
LH
H
LX
LH
L
H BS, CA, A10
LH
L
L BS, CA, A10
L
L
H
H BS, RA
L
L
H
L BS, A10
L
L
L
HX
L
L
L
L Op-Code
HX
X
XX
LH
H
HX
LH
H
LX
LH
L
H BS, CA, A10
LH
L
L BS, CA, A10
L
L
H
H BS, RA
L
L
H
L BS, A10
L
L
L
HX
L
L
L
L Op-Code
HX
X
XX
LH
H
HX
LH
H
LX
LH
L
H BS, CA, A10
LH
L
L BS, CA, A10
L
L
H
H BS, RA
L
L
H
L BS, A10
L
L
L
HX
L
L
L
L Op-Code
COMMAND
DSL
NOP
BST
READ/READA
WRIT/WRITA
ACT
PRE/PREA
AREF/SELF
MRS/EMRS
DSL
NOP
BST
READ/READA
WRIT/WRITA
ACT
PRE/PREA
AREF/SELF
MRS/EMRS
DSL
NOP
BST
READ/READA
WRIT/WRITA
ACT
PRE/PREA
AREF/SELF
MRS/EMRS
DSL
NOP
BST
READ/READA
WRIT/WRITA
ACT
PRE/PREA
AREF/SELF
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
Nop->Idle after tRP
ILLEGAL
ILLEGAL
Nop-> Row active after
Nop-> Row active after
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOTES
3
3
3
3
3
3
3
3
3
3
3
- 17 -
Publication Release Date: May 21, 2003
Revision A3