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W9812G2IH Datasheet Preview

W9812G2IH Datasheet

1M x 4 BANKS x 32BITS SDRAM

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W9812G2IH
1M × 4 BANKS × 32BIT SDRAM
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
8.1 Simplified Stated Diagram................................................................................................... 13
9 ELECTRICAL CHARACTERISTICS ............................................................................................. 14
9.1 Absolute Maximum Ratings................................................................................................. 14
9.2 Recommended DC Operating Conditions ........................................................................... 14
9.3 Capacitance......................................................................................................................... 15
9.4 DC Characteristics............................................................................................................... 15
Publication Release Date: Mar. 09, 2010
- 1 - Revision A04
Datasheet pdf - http://www.DataSheet4U.net/




Winbond

W9812G2IH Datasheet Preview

W9812G2IH Datasheet

1M x 4 BANKS x 32BITS SDRAM

No Preview Available !

www.DataSheet.co.kr
W9812G2IH
9.5 AC Characteristics and Operating Condition....................................................................... 16
10 TIMING WAVEFORMS.................................................................................................................. 18
10.1 Command Input Timing ....................................................................................................... 18
10.2 Read Timing ........................................................................................................................ 19
10.3 Control Timing of Input/Output Data.................................................................................... 20
10.4 Mode Register Set Cycle..................................................................................................... 21
11 Operating Timing Example ............................................................................................................ 22
11.1 Interleaved Bank Read (Burst Length = 4, CAS Latency = 3)............................................. 22
11.2 Interleaved Bank Read (Burst Length = 4, CAS Latency = 3, Auto-precharge).................. 23
11.3 Interleaved Bank Read (Burst Length = 8, CAS Latency = 3)............................................. 24
11.4 Interleaved Bank Read (Burst Length = 8, CAS Latency = 3, Auto-precharge).................. 25
11.5 Interleaved Bank Write (Burst Length = 8) .......................................................................... 26
11.6 Interleaved Bank Write (Burst Length = 8, Auto-precharge) ............................................... 27
11.7 Page Mode Read (Burst Length = 4, CAS Latency = 3) ..................................................... 28
11.8 Page Mode Read / Write (Burst Length = 8, CAS Latency = 3).......................................... 29
11.9 Auto-precharge Read (Burst Length = 4, CAS Latency = 3)............................................... 30
11.10 Auto-precharge Write (Burst Length = 4) ............................................................................ 31
11.11 Auto Refresh Cycle.............................................................................................................. 32
11.12 Self Refresh Cycle............................................................................................................... 33
11.13 Burst Read and Single Write (Burst Length = 4, CAS Latency = 3).................................... 34
11.14 Power Down Mode .............................................................................................................. 35
11.15 Auto-precharge Timing (Read Cycle).................................................................................. 36
11.16 Auto-precharge Timing (Write Cycle) .................................................................................. 36
11.17 Timing Chart of Read to Write Cycle................................................................................... 38
11.18 Timing Chart of Write to Read Cycle................................................................................... 38
11.19 Timing Chart of Burst Stop Cycle (Burst Stop Command) .................................................. 39
11.20 Timing Chart of Burst Stop Cycle (Precharge Command) .................................................. 39
11.21 CKE/DQM Input Timing (Write Cycle) ................................................................................. 40
11.22 CKE/DQM Input Timing (Read Cycle)................................................................................. 41
12 Package Specification ................................................................................................................... 41
12.1 86L TSOP (II)-400 mil.......................................................................................................... 42
13 REVISION HISTORY..................................................................................................................... 43
-2-
Publication Release Date: Mar. 09, 2010
Revision A04
Datasheet pdf - http://www.DataSheet4U.net/


Part Number W9812G2IH
Description 1M x 4 BANKS x 32BITS SDRAM
Maker Winbond
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