W9412G6JH Datasheet, PDF (1/53 Pages) Winbond – 2M  4 BANKS  16 BITS DDR SDRAM

W9412G6JH
2M  4 BANKS  16 BITS DDR SDRAM
Table of Contents-
1. GENERAL DESCRIPTION ......................................................................................................... 4
2. FEATURES ................................................................................................................................. 4
3. KEY PARAMETERS ................................................................................................................... 5
4. PIN CONFIGURATION ............................................................................................................... 6
5. PIN DESCRIPTION..................................................................................................................... 7
6. BLOCK DIAGRAM ...................................................................................................................... 8
7. FUNCTIONAL DESCRIPTION.................................................................................................... 9
7.1 Power Up Sequence ....................................................................................................... 9
7.2 Command Function ...................................................................................................... 10
7.2.1
Bank Activate Command ........................................................................... 10
7.2.2
Bank Precharge Command........................................................................ 10
7.2.3
Precharge All Command............................................................................ 10
7.2.4
Write Command ......................................................................................... 10
7.2.5
Write with Auto-precharge Command........................................................ 10
7.2.6
Read Command ......................................................................................... 10
7.2.7
Read with Auto-precharge Command ....................................................... 10
7.2.8
Mode Register Set Command.................................................................... 11
7.2.9
Extended Mode Register Set Command ................................................... 11
7.2.10 No-Operation Command............................................................................ 11
7.2.11 Burst Read Stop Command ....................................................................... 11
7.2.12 Device Deselect Command ....................................................................... 11
7.2.13 Auto Refresh Command ............................................................................ 11
7.2.14 Self Refresh Entry Command .................................................................... 12
7.2.15 Self Refresh Exit Command....................................................................... 12
7.2.16 Data Write Enable /Disable Command ...................................................... 12
7.3 Read Operation............................................................................................................. 12
7.4 Write Operation............................................................................................................. 13
7.5 Precharge ..................................................................................................................... 13
7.6 Burst Termination ......................................................................................................... 13
7.7 Refresh Operation ........................................................................................................ 13
7.8 Power Down Mode ....................................................................................................... 14
7.9 Input Clock Frequency Change during Precharge Power Down Mode ........................ 14
7.10 Mode Register Operation.............................................................................................. 14
Publication Release Date: Nov. 29, 2011
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Revision A03