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W9864G6DB Datasheet Preview

W9864G6DB Datasheet

1M x 4 BANKS x 16-BITS SDRAM

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W9864G6DB
Table of Contents-
1M × 4 BANKS × 16 BITS SDRAM
1. GENERAL DESCRIPTION.................................................................................................................. 3
2. FEATURES ......................................................................................................................................... 3
3. AVAILABLE PART NUMBER.............................................................................................................. 3
4. PIN CONFIGURATION ....................................................................................................................... 4
5. PIN DESCRIPTION ............................................................................................................................. 5
6. BLOCK DIAGRAM .............................................................................................................................. 6
7. FUNCTIONAL DESCRIPTION............................................................................................................ 7
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 ........................................................................................................................ 8
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 .......................................................................................................................... 10
No Operation Command ................................................................................................................. 11
Deselect Command......................................................................................................................... 11
Clock Suspend Mode ...................................................................................................................... 11
Table of Operating Modes............................................................................................................... 12
Simplified State Diagram................................................................................................................. 13
8. DC CHARACTERISTICS .................................................................................................................. 14
Absolute Maximum Rating .............................................................................................................. 14
Recommended DC Operating Conditions....................................................................................... 14
Capacitance .................................................................................................................................... 14
Publication Release Date: January 27, 2003
- 1 - Revision A1




Winbond

W9864G6DB Datasheet Preview

W9864G6DB Datasheet

1M x 4 BANKS x 16-BITS SDRAM

No Preview Available !

W9864G6DB
DC Characteristics .......................................................................................................................... 15
9. AC CHARACTERISTICS .................................................................................................................. 16
10. TIMING WAVEFORMS ................................................................................................................... 19
Command Input Timing ................................................................................................................... 19
Read Timing .................................................................................................................................... 20
Control Timing of Input Data ........................................................................................................... 21
Control Timing of Output Data ........................................................................................................ 22
Mode Register Set Cycle ................................................................................................................ 23
11. OPERATING TIMING EXAMPLE.................................................................................................... 24
Interleaved Bank Read (Burst Length = 4, CAS Latency = 3) ........................................................ 24
Interleaved Bank Read (Burst Length = 4, CAS Latency = 3, Auto Precharge) ............................. 25
Interleaved Bank Read (Burst Length = 8, CAS Latency = 3) ........................................................ 26
Interleaved Bank Read (Burst Length = 8, CAS Latency = 3, Auto Precharge) ............................. 27
Interleaved Bank Write (Burst Length = 8)...................................................................................... 28
Interleaved Bank Write (Burst Length = 8, Auto Precharge) .......................................................... 29
Page Mode Read (Burst Length = 4, CAS Latency = 3)................................................................. 30
Page Mode Read/Write (Burst Length = 8, CAS Latency = 3) ....................................................... 31
Auto Precharge Read (Burst Length = 4, CAS Latency = 3) .......................................................... 32
Auto Precharge Write (Burst Length = 4)........................................................................................ 33
Auto Refresh Cycle ......................................................................................................................... 34
Self Refresh Cycle........................................................................................................................... 35
Bust Read and Single Write (Burst Length = 4, CAS Latency = 3)................................................. 36
Power Down Mode .......................................................................................................................... 37
Auto Precharge Timing (Write Cycle) ............................................................................................. 38
Auto Precharge Timing (Read Cycle) ............................................................................................. 39
Timing Chart of Read to Write Cycle............................................................................................... 40
Timing Chart of Write to Read Cycle............................................................................................... 41
Timing Chart of Burst Stop Cycle (Burst Stop Command).............................................................. 42
Timing Chart of Burst Stop Cycle (Precharge Command).............................................................. 43
CKE/DQM Input Timing (Write Cycle)............................................................................................. 44
CKE/DQM Input Timing (Read Cycle) ............................................................................................ 45
Self Refresh/Power Down Mode Exit Timing .................................................................................. 46
12. PACKAGE DIMENSIONS ............................................................................................................... 47
BGA 60 Balls Pitch = 0.65 mm........................................................................................................ 47
13. VERSION HISTORY ....................................................................................................................... 48
-2-


Part Number W9864G6DB
Description 1M x 4 BANKS x 16-BITS SDRAM
Maker Winbond
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