W942516BH-6
´ 4 BANKS ´ 16 BIT DDR SDRAM
4M
Table of Contents-
1. GENERAL DESCRIPTION ..................................................................................................................3
2. FEATURES..........................................................................................................................................3
3. KEY PARAMETERS............................................................................................................................3
4. PIN CONFIGURATION........................................................................................................................4
5. PIN DESCRIPTION .............................................................................................................................5
6. BLOCK DIAGRAM...............................................................................................................................6
7. ABSOLUTE MAXIMUM RATINGS ......................................................................................................7
8. RECOMMENDED DC OPERATING CONDITIONS............................................................................7
9. CAPACITANCE ...................................................................................................................................8
10. LEAKAGE AND OUPPUT BUFFER CHARACTERISTICS...............................................................8
11. DC CHARACTERISTICS...................................................................................................................9
12. AC CHARACTERISTICS AND OPERATING CONDITION.............................................................10
13. AC TEST CONDITIONS ..................................................................................................................11
14. OPERATION MODE........................................................................................................................13
Simplified Truth Table............................................................................................................................. 13
Function Truth Table............................................................................................................................... 14
Function Truth Table for CKE................................................................................................................. 17
15. SIMPLIFIED STATE DIAGRAM ......................................................................................................18
16. FUNCTIONAL DESCRIPTION ........................................................................................................19
Power Up Sequence............................................................................................................................... 19
Command Function ................................................................................................................................ 19
Read Operation ...................................................................................................................................... 22
Write Operation....................................................................................................................................... 22
Precharge ............................................................................................................................................... 22
Burst Termination ................................................................................................................................... 23
Refresh Operation .................................................................................................................................. 23
Power Down Mode ................................................................................................................................. 23
Mode Register Operation........................................................................................................................ 23
17. TIMING WAVEFORMS....................................................................................................................27
Command Input Timing .......................................................................................................................... 27
Timing of the CLK Signals ...................................................................................................................... 27
Read Timing (Burst Length = 4).............................................................................................................. 28
Write Timing (Burst Length = 4).............................................................................................................. 29
DM, DATA MASK (W942508BH /W942504BH) ..................................................................................... 30
Publication Release Date: March 21, 2002
- 1 -
Revision A1
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