W9812G2GH Datasheet, PDF (1/42 Pages) Winbond – a high-speed synchronous dynamic random access memory (SDRAM), organized as 1,048,576 words × 4 banks × 32 bits

W9812G2GH
Table of Contents-
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
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
Publication Release Date: Aug. 13,2007
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Revision A07