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W947D2HBJX5I Datasheet(PDF) 9 Page - Winbond |
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W947D2HBJX5I Datasheet(HTML) 9 Page - Winbond |
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9 / 60 page  W947D6HB / W947D2HB 128Mb Mobile LPDDR Publication Release Date:Jun,17, 2011 - 9 - Revision A01-003 5.2 Simplified State Diagram ACT = Active MRS = 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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