W9825G2JB Datasheet, PDF (1/41 Pages) Winbond – 2M  4 BANKS  32BITS SDRAM

W9825G2JB
2M  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 DESCRIPTIONS................................................................................................................... 5
6. BLOCK DIAGRAM.......................................................................................................................... 6
7. FUNCTIONAL DESCRIPTION....................................................................................................... 7
7.1 Power Up and Initialization .................................................................................................. 7
7.2 Programming Mode Register............................................................................................... 7
7.3 Bank Activate Command ..................................................................................................... 7
7.4 Read and Write Access Modes ........................................................................................... 7
7.5 Burst Read Command ......................................................................................................... 8
7.6 Burst Write Command ......................................................................................................... 8
7.7 Read Interrupted by a Read ................................................................................................ 8
7.8 Read Interrupted by a Write ................................................................................................ 8
7.9 Write Interrupted by a Write................................................................................................. 8
7.10 Write Interrupted by a Read ................................................................................................ 8
7.11 Burst Stop Command .......................................................................................................... 9
7.12 Addressing Sequence of Sequential Mode ......................................................................... 9
7.13 Addressing Sequence of Interleave Mode .......................................................................... 9
7.14 Auto-precharge Command ................................................................................................ 10
7.15 Precharge Command ........................................................................................................ 10
7.16 Self Refresh Command ..................................................................................................... 10
7.17 Power-down Mode............................................................................................................. 11
7.18 No Operation Command.................................................................................................... 11
7.19 Deselect Command ........................................................................................................... 11
7.20 Clock Suspend Mode ........................................................................................................ 11
8. OPERATION MODE..................................................................................................................... 12
9. ELECTRICAL CHARACTERISTICS ............................................................................................ 13
9.1 Absolute Maximum Ratings............................................................................................... 13
9.2 Recommended DC Operating Conditions ......................................................................... 13
9.3 Capacitance....................................................................................................................... 13
9.4 DC Characteristics............................................................................................................. 14
9.5 AC Characteristics and Operating Condition..................................................................... 15
10. TIMING WAVEFORMS ................................................................................................................ 17
10.1 Command Input Timing ..................................................................................................... 17
10.2 Read Timing ...................................................................................................................... 18
Publication Release Date: Apr. 11, 2011
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Revision A01