W9464G6IB Datasheet, PDF (1/51 Pages) Winbond – 1M × 4 BANKS × 16 BITS DDR SDRAM

W9464G6IB
1M × 4 BANKS × 16 BITS DDR SDRAM
Table of Contents-
1. GENERAL DESCRIPTION ......................................................................................................... 4
2. FEATURES ................................................................................................................................. 4
3. KEY PARAMETERS ................................................................................................................... 5
4. BALL CONFIGURATION ............................................................................................................ 6
5. BALL 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
7.10.1
Burst Length field (A2 to A0)...................................................................................14
Publication Release Date:Oct. 16, 2008
-1-
Revision A01