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W97AH6KB Datasheet(PDF) 14 Page - Winbond

Part # W97AH6KB
Description  Four-bit prefetch DDR architecture
PDF  127 Pages
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Manufacturer  WINBOND [Winbond]
Direct Link  http://www.winbond.com
Logo WINBOND - Winbond

W97AH6KB Datasheet(HTML) 14 Page - Winbond

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W97AH6KB / W97AH2KB
Publication Release Date: May 15, 2014
Revision: A01-001
- 14 -
7.1.1
Simplified LPDDR2 Bus Interface State Diagram
Precharging
Writing
With
Autoprecharge
Reading
With
Autoprecharge
Reading
Writing
Active*1
Active
Power
Down
Active
MR
Reading
MR
Writing
Idle
Power
Down
Idle
Idle
MR
Reading
Resetting
Refreshing
Self
Refreshing
Deep
Power
Down
Power
On
Resetting
MR
Reading
Resetting
Power
Down
Automatic Sequence
Command Sequence
Power
Applied
Reset
MRR
PD
PDX
BST
WR
WRA
WRA
WR
PD
PDX
Reset
DPDX
MRR
MRW
MRR
PD
PDX
RD
RD
BST
DPD
SREF
SREFX
REF
ACT
RDA
RDA
PR,PRA
PR(A)=Precharge (All)
ACT=Activate
WR(A)=Write(with Autoprecharge)
RD(A)=Read (with Autoprecharge)
BST=Burst Terminate
Reset=Reset is achieved through MRW command
MRW=Mode Register Write
MRR=Mode Register Read
PD=Enter Power Down
PDX=Exit Power Down
SREF=Enter Self Refresh
SREFX=Exit Self Refresh
DPD=Enter Deep Power Down
DPDX=Exit Deep Power Down
REF=Refresh
PR,PRA
Note: For LPDDR2-SDRAM in the Idle state, all banks are precharged.



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