W989D6CB Datasheet, PDF (15/67 Pages) Winbond – 512Mb Mobile LPSDR

W989D6CB / W989D2CB
7.1.2 Functional Truth Table
(See Note 1 at the end of this Table)
Current State CS
H
L
L
L
Idle
L
L
L
L
H
L
L
L
Row active
L
L
L
L
H
L
L
RAS
X
H
H
H
L
L
L
L
X
H
H
H
L
L
L
L
X
H
H
CAS WE
X
X
H
X
L
H
L
L
H
H
H
L
L
H
L
L
X
X
H
X
L
H
L
L
H
H
H
L
L
H
L
L
X
X
H
H
H
L
L
H
L
H
Read
L
H
L
L
L
L
L
L
L
L
L
L
H
X
L
H
L
H
H
H
H
L
L
H
L
L
X
X
H
H
H
L
L
H
L
H
Write
L
H
L
L
L
L
H
H
L
L
H
L
L
L
L
H
L
L
L
L
512Mb Mobile LPSDR
Address
X
X
BS, CA, A10
BS, CA, A10
BS, RA
BS, A10
X
Op-Code
X
X
BS, CA, A10
BS, CA, A10
BS, RA
BS, A10
X
Op-Code
X
X
X
BS, CA, A10
BS, CA, A10
BS, RA
BS, A10
X
Op-Code
X
X
X
BS, CA, A10
BS, CA, A10
BS, RA
BS, A10
X
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
Nop
Nop
ILLEGAL
ILLEGAL
Row activating
Nop
Refresh or Self refresh
Mode register accessing
Nop
Nop
Begin read: Determine AP
Begin write: Determine AP
ILLEGAL
Precharge
ILLEGAL
ILLEGAL
Continue burst to end
Continue burst to end
Burst stop
Term burst, new read: Determine
AP
Term burst, begin write:
Determine AP
ILLEGAL
Term burst, precharging
ILLEGAL
ILLEGAL
Continue burst to end.
Continue burst to end
Burst stop, row active
Term burst, start read: Determine
AP
Term burst, new write: Determine
AP
ILLEGAL
Term burst. precharging
ILLEGAL
ILLEGAL
Notes
3
3
2
2
4
4
3
5
6
6,7
3
6, 7
6
3
8
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Publication Release Date: Sep, 22, 2011
Revision A01-005