W9864G2IB
512K × 4 BANKS × 32BITS SDRAM
Table of Contents-
1. GENERAL DESCRIPTION.............................................................................................................. 3
2. FEATURES...................................................................................................................................... 3
3. AVAILABLE PART NUMBER .......................................................................................................... 3
4. BALL CONFIGURATION................................................................................................................. 4
5. BALL DESCRIPTION ...................................................................................................................... 5
6. BLOCK DIAGRAM........................................................................................................................... 6
7. FUNCTIONAL DESCRIPTION........................................................................................................ 7
7.1
Power Up and Initialization ................................................................................................. 7
Programming Mode Register.............................................................................................. 7
Bank Activate Command .................................................................................................... 7
Read and Write Access Modes .......................................................................................... 7
Burst Read Command ........................................................................................................ 8
Burst Command.................................................................................................................. 8
Read Interrupted by a Read ............................................................................................... 8
Read Interrupted by a Write................................................................................................ 8
Write Interrupted by a Write................................................................................................ 8
Write Interrupted by a Read................................................................................................ 8
Burst Stop Command.......................................................................................................... 9
Addressing Sequence of Sequential Mode......................................................................... 9
Addressing Sequence of Interleave Mode.......................................................................... 9
Auto-precharge Command................................................................................................ 10
Precharge Command........................................................................................................ 10
Self Refresh Command..................................................................................................... 10
Power Down Mode............................................................................................................ 11
No Operation Command................................................................................................... 11
Deselect Command .......................................................................................................... 11
Clock Suspend Mode........................................................................................................ 11
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
7.11
7.12
7.13
7.14
7.15
7.16
7.17
7.18
7.19
7.20
8. OPERATION MODE...................................................................................................................... 12
9. ELECTRICAL CHARACTERISTICS ............................................................................................. 13
9.1
9.2
Absolute Maximum Ratings.............................................................................................. 13
Recommended DC Operating Conditions ........................................................................ 13
Publication Release Date: Sep. 17, 2009
- 1 -
Revision A01
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