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Winbond - 1M X 4 BANKS X 32 BITS GDDR SDRAM

Numéro de référence W9412G2IB
Description 1M X 4 BANKS X 32 BITS GDDR SDRAM
Fabricant Winbond 
Logo Winbond 





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W9412G2IB fiche technique
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W9412G2IB
1M × 4 BANKS × 32 BITS GDDR SDRAM
Table of Contents-
1. GENERAL DESCRIPTION .................................................................................................................................4
2. FEATURES ........................................................................................................................................................4
3. KEY PARAMETERS...........................................................................................................................................5
4. BALL CONFIGURATION....................................................................................................................................6
5. BALL DESCRIPTION .........................................................................................................................................7
6. BLOCK DIAGRAM..............................................................................................................................................9
7. FUNCTIONAL DESCRIPTION .........................................................................................................................10
7.1 Power Up Sequence...........................................................................................................................10
7.2 Command Function ............................................................................................................................11
7.2.1 Bank Activate Command ......................................................................................................11
7.2.2 Bank Precharge Command ..................................................................................................11
7.2.3 Precharge All Command ......................................................................................................11
7.2.4 Write Command ...................................................................................................................11
7.2.5 Write with Auto-precharge Command ..................................................................................11
7.2.6 Read Command ...................................................................................................................11
7.2.7 Read with Auto-precharge Command ..................................................................................11
7.2.8 Mode Register Set Command ..............................................................................................12
7.2.9 Extended Mode Register Set Command ..............................................................................12
7.2.10 No-Operation Command ......................................................................................................12
7.2.11 Burst Read Stop Command..................................................................................................12
7.2.12 Device Deselect Command ..................................................................................................12
7.2.13 Auto Refresh Command .......................................................................................................12
7.2.14 Self Refresh Entry Command...............................................................................................13
7.2.15 Self Refresh Exit Command .................................................................................................13
7.2.16 Data Write Enable /Disable Command .................................................................................13
7.3 Read Operation ..................................................................................................................................13
7.4 Write Operation ..................................................................................................................................14
7.5 Precharge...........................................................................................................................................14
7.6 Burst Termination ...............................................................................................................................14
7.7 Refresh Operation ..............................................................................................................................14
7.8 Power Down Mode .............................................................................................................................15
7.9 Input Clock Frequency Change during Precharge Power Down Mode...............................................15
7.10 Mode Register Operation ...................................................................................................................15
7.10.1 Burst Length field (A2 to A0) ................................................................................................16
7.10.2 Addressing Mode Select (A3)...............................................................................................16
Publication Release Date: Aug. 30, 2010
- 1 - Revision A06
Datasheet pdf - http://www.DataSheet4U.net/

PagesPages 50
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