W94AD6KB / W94AD2KB

Publication Release Date: Oct. 02, 2014

Revision: A01-005

- 2 -

8.4

Active..................................................................................................................................................27

8.4.1

Active Command ..................................................................................................................27

8.4.2

Bank Activation Command Cycle .........................................................................................28

8.5

Read...................................................................................................................................................28

8.5.1

Read Command ...................................................................................................................28

8.5.2

Basic Read Timing Parameters............................................................................................29

8.5.3

Read Burst Showing CAS Latency .......................................................................................30

8.5.4

Read to Read .......................................................................................................................30

8.5.5

Consecutive Read Bursts .....................................................................................................30

8.5.6

Non-Consecutive Read Bursts .............................................................................................31

8.5.7

Random Read Bursts ...........................................................................................................32

8.5.8

Read Burst Terminate ..........................................................................................................32

8.5.9

Read to Write .......................................................................................................................33

8.5.10

Read to Precharge ...............................................................................................................34

8.5.11

Burst Terminate of Read ......................................................................................................35

8.6

Write ...................................................................................................................................................35

8.6.1

Write Command ...................................................................................................................35

8.6.2

Basic Write Timing Parameters ............................................................................................36

8.6.3

Write Burst (min. and max. tDQSS)......................................................................................37

8.6.4

Write to Write........................................................................................................................37

8.6.5

Concatenated Write Bursts...................................................................................................38

8.6.6

Non-Concatenated Write Bursts ...........................................................................................38

8.6.7

Random Write Cycles...........................................................................................................39

8.6.8

Write to Read .......................................................................................................................39

8.6.9

Non-Interrupting Write to Read.............................................................................................39

8.6.10

Interrupting Write to Read ....................................................................................................40

8.6.11

Write to Precharge ...............................................................................................................40

8.6.12

Non-Interrupting Write to Precharge.....................................................................................40

8.6.13

Interrupting Write to Precharge ............................................................................................41

8.7

Precharge ...........................................................................................................................................41

8.7.1

Precharge Command ...........................................................................................................42

8.8

Auto Precharge...................................................................................................................................42

8.9

Refresh Requirements........................................................................................................................42

8.10

Auto Refresh ......................................................................................................................................43

8.10.1

Auto Refresh Command .......................................................................................................43

8.10.2

Auto Refresh Cycles Back-to-Back ......................................................................................43

8.11

Self Refresh........................................................................................................................................44

8.11.1

Self Refresh Command ........................................................................................................44

8.11.2

Self Refresh Entry and Exit ..................................................................................................45

8.12

Power Down .......................................................................................................................................46

8.12.1

Power-Down Entry and Exit..................................................................................................46

8.13

Deep Power Down..............................................................................................................................47

8.13.1

Deep Power-Down Entry and Exit ........................................................................................47

8.14

Clock Stop ..........................................................................................................................................48

8.14.1

Clock Stop Mode Entry and Exit ...........................................................................................48

9. ELECTRICAL CHARACTERISTICS.................................................................................................................49

9.1

Absolute Maximum Ratings ................................................................................................................49