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參數(shù)資料
| 型號： | W987Y6CBN |
| 英文描述： | Model PIO-32I/O Isolated, ISA Boards w/ 16-Ch Digital Inputs and 16-Ch Relay Outputs |
| 中文描述： | 內存 |
| 文件頁數(shù)： | 1/46頁 |
| 文件大?。?/td> | 1634K |
| 代理商： | W987Y6CBN |
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Preliminary W987Y6CB
2M
′
4 BANKS
′
16 BIT SDRAM
Publication Release Date: May 21, 2002
- 1 -
Revision A1
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. ABSOLUTE MAXIMUM RATINGS ......................................................................................................7
8. DC ELECTRICAL CHARACTERISTICS AND OPERATING CONDITIONS.......................................7
9. CAPACITANCE ...................................................................................................................................8
10. OPERATING CURRENT...................................................................................................................8
11. AC CHARACTERISTICS AND OPERATING CONDITION...............................................................9
12. FUNCTIONAL DESCRIPTION ........................................................................................................12
Power Up Sequence.......................................................................................................................12
Command Function ........................................................................................................................12
Read Operation ..............................................................................................................................15
Write Operation...............................................................................................................................15
Precharge .......................................................................................................................................15
Burst Termination ...........................................................................................................................15
Interruption......................................................................................................................................16
Refresh Operation ..........................................................................................................................16
Power Down Mode .........................................................................................................................17
Mode Register Set Operation.........................................................................................................17
Simplified State Diagram................................................................................................................19
13. TIMING WAVEFORMS....................................................................................................................20
Command Input Timing ..................................................................................................................20
Read Timing ...................................................................................................................................21
Control Timing of Input / Output Data.............................................................................................22
14. OPERATING TIMING EXAMPLE....................................................................................................24
Interleaved Bank Read (Burst Length = 4, CAS Latency = 3)........................................................24
Interleaved Bank Read (Burst Length = 4, CAS Latency = 3, Autoprecharge)..............................25
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