W9864G2GH Datasheet, PDF (1/46 Pages) Winbond – 512K X 4 BANKS X 32BITS SDRAM

W9864G2GH
512K X 4 BANKS X 32BITS SDRAM
Table of Contents-
1. GENERAL DESCRIPTION ......................................................................................................... 3
2. FEATURES ................................................................................................................................. 3
3. AVAILABLE PART NUMBER...................................................................................................... 4
4. PIN CONFIGURATION ............................................................................................................... 5
5. PIN DESCRIPTION..................................................................................................................... 6
6. BLOCK DIAGRAM ...................................................................................................................... 7
7. FUNCTIONAL DESCRIPTION.................................................................................................... 8
7.1 Power Up and Initialization ............................................................................................. 8
7.2 Programming Mode Register.......................................................................................... 8
7.3 Bank Activate Command ................................................................................................ 8
7.4 Read and Write Access Modes ...................................................................................... 8
7.5 Burst Read Command .................................................................................................... 9
7.6 Burst Command .............................................................................................................. 9
7.7 Read Interrupted by a Read ........................................................................................... 9
7.8 Read Interrupted by a Write............................................................................................ 9
7.9 Write Interrupted by a Write............................................................................................ 9
7.10 Write Interrupted by a Read............................................................................................ 9
7.11 Burst Stop Command ................................................................................................... 10
7.12 Addressing Sequence of Sequential Mode .................................................................. 10
7.13 Addressing Sequence of Interleave Mode.................................................................... 10
7.14 Auto-precharge Command ........................................................................................... 11
7.15 Precharge Command.................................................................................................... 11
7.16 Self Refresh Command ................................................................................................ 11
7.17 Power Down Mode ....................................................................................................... 12
7.18 No Operation Command............................................................................................... 12
7.19 Deselect Command ...................................................................................................... 12
7.20 Clock Suspend Mode.................................................................................................... 12
8. OPERATION MODE ................................................................................................................. 13
8.1 Simplified Stated Diagram ............................................................................................ 14
9. ELECTRICAL CHARACTERISTICS......................................................................................... 15
9.1 Absolute Maximum Ratings .......................................................................................... 15
Publication Release Date:Aug. 13, 2007
-1-
Revision A09