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W947D6HB / W947D2HB
128Mb Mobile LPDDR
7.3 Mode Register Set..........................................................................................................................25
7.3.1 Mode Register Set Command...............................................................................................................25
7.3.2 Mode Register Set Command Timing ...................................................................................................26
7.4. Active ............................................................................................................................................26
7.4.1 Active Command ...................................................................................................................................26
7.4.2 Bank Activation Command Cycle..........................................................................................................27
7.5. Read .............................................................................................................................................27
7.5.1 Read Command ....................................................................................................................................28
7.5.2 Basic Read Timing Parameters ............................................................................................................28
7.5.3 Read Burst Showing CAS Latency .......................................................................................................29
7.5.4 Read to Read ........................................................................................................................................29
7.5.5 Consecutive Read Bursts......................................................................................................................30
7.5.6 Non-Consecutive Read Bursts..............................................................................................................30
7.5.7 Random Read Bursts ............................................................................................................................31
7.5.8 Read Burst Terminate ...........................................................................................................................31
7.5.9 Read to Write ........................................................................................................................................32
7.5.10 Read to Pre-charge .............................................................................................................................32
7.5.11 Burst Terminate of Read .....................................................................................................................33
7.6 Write...............................................................................................................................................33
7.6.1 Write Command ....................................................................................................................................34
7.6.2 Basic Write Timing Parameters.............................................................................................................34
7.6.3 Write Burst (min. and max. tDQSS) ......................................................................................................35
7.6.4 Write to Write.........................................................................................................................................35
7.6.5 Concatenated Write Bursts ...................................................................................................................36
7.6.6 Non-Consecutive Write Bursts ..............................................................................................................36
7.6.7 Random Write Cycles ...........................................................................................................................37
7.6.8 Write to Read ........................................................................................................................................37
7.6.9 Non-Interrupting Write to Read .............................................................................................................37
7.6.10 Interrupting Write to Read ...................................................................................................................38
7.6.11 Write to Precharge ..............................................................................................................................38
7.6.12 Non-Interrupting Write to Precharge ...................................................................................................38
7.6.13 Interrupting Write to Precharge ...........................................................................................................39
7.7 Precharge.......................................................................................................................................39
7.7.1 Precharge Command ............................................................................................................................40
7.8 Auto Precharge ..............................................................................................................................40
7.9 Refresh Requirements....................................................................................................................40
7.10 Auto Refresh ................................................................................................................................40
7.10.1 Auto Refresh Command......................................................................................................................41
7.11 Self Referesh................................................................................................................................41
7.11.1 Self Refresh Command .......................................................................................................................42
7.11.2 Auto Refresh Cycles Back-to-Back .....................................................................................................42
7.11.3 Self Refresh Entry and Exit .................................................................................................................43
7.12 Power Down .................................................................................................................................43
7.12.1 Power-Down Entry and Exit ................................................................................................................43
7.13 Deep Power Down........................................................................................................................44
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Publication Release Date:Jun,17, 2011
Revision A01-003
Datasheet pdf - http://www.DataSheet4U.net/
