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W948D6FB Datasheet(PDF) 9 Page - Winbond

Part # W948D6FB
Description  256Mb Mobile LPDDR
Download  60 Pages
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Manufacturer  WINBOND [Winbond]
Direct Link  http://www.winbond.com
Logo WINBOND - Winbond

W948D6FB Datasheet(HTML) 9 Page - Winbond

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W948D6FB / W948D2FB
256Mb Mobile LPDDR
Publication Release Date : Oct, 15, 2012
- 9 -
Revision : A01-004
5.2 Simplified State Diagram
ACT =Active
EMRS= Ext . Mode Reg .Set
REFSX = Exit Self Refresh
BST = Burst Terminate
MRS = Mode Register Set
READ = Read w/o Auto Precharge
CKEL= Enter Power - Down
PRE = Precharge
READA = Read with Auto Precharge
CKEH =Exit Power - Down
PREALL = Precharge All Bank
WRITE = Write w/o Auto Precharge
DPDS = Enter Deep Power
- Down
REFA = Auto Refresh
WRITEA
= Write with Auto Precharge
DPDSX = Exit Deep Power
- Down
REFS = Enter Self Refresh
Note: Use caution with this diagram . It is indented to provide a floorplan of the possible state transitions and commands to control them , not
all details .In particular situations involving more than one bank are not captured in full detall .
Deep
Power
Down
DPDS
ACT
PRE
PRE
PRE
READA
READ A
Precharge
PREALL
WRITE A
PRE
WRITE
READ
Burst
Stop
Row
Active
Active
Power
Down
Precharge
Power
Down
Auto
Refresh
Idle
All banks
precharged
MRS
EMRS
Self
Refresh
Precharge
All Bank
Power
On
Power
applied
DPDSX
MRS
REFA
REFS
REFSX
CKEL
CKEH
CKEH
CKEL
WRITE
WRITEA
READA
BST
READ
READA
READ
WRITE
READ
WRITE
Automatic Sequence
Command Sequence
SRR
Read
Read
SRR
SRR = Status Register Read


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