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W989D6KB 데이터시트(PDF) 19 Page - Winbond

부품명 W989D6KB
상세설명  Standard Self Refresh Mode
PDF  66 Pages
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제조업체  WINBOND [Winbond]
홈페이지  http://www.winbond.com
Logo WINBOND - Winbond

W989D6KB 데이터시트(HTML) 19 Page - Winbond

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W989D6KB / W989D2KB
512Mb Mobile LPSDR
Publication Release Date : October 07, 2013
- 19 -
Revision : A01-003
Current State
CS
RAS
CAS
WE
Address
Command
Action
Notes
Write
recovering
H
X
X
X
X
DSL
Nop
→ Maintain Row active after tWR
L
H
H
H
X
NOP
Nop
→ Maintain Row active after tWR
L
H
H
L
X
BST
Nop
→ Maintain Row active after tWR
L
H
L
H
BS, CA, A10
READ/READA
Begin Read
7
L
H
L
L
BS, CA, A10
WRIT/WRITA
Begin new Write
L
L
H
H
BS, RA
ACT
ILLEGAL
3
L
L
H
L
BS, A10
PRE/PREA
ILLEGAL
3
L
L
L
H
X
AREF/SELF
ILLEGAL
L
L
L
L
Op-Code
MRS/EMRS
ILLEGAL
Write
recovering
with auto
precharge
H
X
X
X
X
DSL
Nop
→ Enter precharge after tWR
L
H
H
H
X
NOP
Nop
→ Enter precharge after tWR
L
H
H
L
X
BST
Nop
→ Enter precharge after tWR
L
H
L
H
BS, CA, A10
READ/READA
ILLEGAL
3
L
H
L
L
BS, CA, A10
WRIT/WRITA
ILLEGAL
3
L
L
H
H
BS, RA
ACT
ILLEGAL
3
L
L
H
L
BS, A10
PRE/PREA
ILLEGAL
3
L
L
L
H
X
AREF/SELF
ILLEGAL
L
L
L
L
Op-Code
MRS/EMRS
ILLEGAL
Refreshing
H
X
X
X
X
DSL
Nop
→ Idle after tRFC
L
H
H
H
X
NOP
Nop
→ Idle after tRFC
L
H
H
L
X
BST
Nop
→ Idle after tRFC
L
H
L
X
X
READ/WRIT
ILLEGAL
L
L
H
X
X
ACT/PRE/PREA
ILLEGAL
L
L
L
X
X
AREF/SELF/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
H
L
X
BST
ILLEGAL
L
H
L
X
X
READ/WRIT
ILLEGAL
L
L
X
X
X
ACT/PRE/PREA/
AREF/SELF/MRS/
EMRS
ILLEGAL
Note:
1. All entries assume that CKE was active (High level) during the preceding clock cycle and the current clock cycle (CKEn-
1 = CKEn = ”1”)
2. Illegal if any bank is not idle.
3. Illegal to bank in specified states; Function may be legal in the bank indicated by Bank Address (BS), depending on the state of that bank.
4. Illegal if tRCD is not satisfied.
5. Illegal if tRAS is not satisfied.
6. Must satisfy burst interrupt condition.
7. Must avoid bus contention, bus turn around, and/or satisfy write recovery requirements.
8.
Must mask preceding data which don’t satisfy tWR.
Remark: H = High level, L = Low level, X = High or Low level (Don’t care), V = Valid data



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