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W9825G2JB Datasheet Preview

W9825G2JB Datasheet

2M X 4 BANKS X 32BITS SDRAM

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W9825G2JB
2M 4 BANKS 32BITS SDRAM
Table of Contents-
1. GENERAL DESCRIPTION............................................................................................................. 3
2. FEATURES .................................................................................................................................... 3
3. AVAILABLE PART NUMBER......................................................................................................... 3
4. BALL CONFIGURATION ............................................................................................................... 4
5. BALL DESCRIPTIONS................................................................................................................... 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
9.5 AC Characteristics and Operating Condition..................................................................... 15
10. TIMING WAVEFORMS ................................................................................................................ 17
10.1 Command Input Timing ..................................................................................................... 17
10.2 Read Timing ...................................................................................................................... 18
Publication Release Date: Apr. 11, 2011
- 1 - Revision A01
Datasheet pdf - http://www.DataSheet4U.net/




Winbond

W9825G2JB Datasheet Preview

W9825G2JB Datasheet

2M X 4 BANKS X 32BITS SDRAM

No Preview Available !

www.DataSheet.co.kr
W9825G2JB
10.3 Control Timing of Input/Output Data.................................................................................. 19
10.4 Mode Register Set Cycle................................................................................................... 20
11. OPERATING TIMING EXAMPLE................................................................................................. 21
11.1 Interleaved Bank Read (Burst Length = 4, CAS Latency = 3)........................................... 21
11.2 Interleaved Bank Read (Burst Length = 4, CAS Latency = 3, Auto-precharge)................ 22
11.3 Interleaved Bank Read (Burst Length = 8, CAS Latency = 3)........................................... 23
11.4 Interleaved Bank Read (Burst Length = 8, CAS Latency = 3, Auto-precharge)................ 24
11.5 Interleaved Bank Write (Burst Length = 8) ........................................................................ 25
11.6 Interleaved Bank Write (Burst Length = 8, Auto-precharge) ............................................. 26
11.7 Page Mode Read (Burst Length = 4, CAS Latency = 3) ................................................... 27
11.8 Page Mode Read / Write (Burst Length = 8, CAS Latency = 3) ........................................ 28
11.9 Auto-precharge Read (Burst Length = 4, CAS Latency = 3) ............................................. 29
11.10 Auto-precharge Write (Burst Length = 4) .......................................................................... 30
11.11 Auto Refresh Cycle............................................................................................................ 31
11.12 Self Refresh Cycle ............................................................................................................. 32
11.13 Burst Read and Single Write (Burst Length = 4, CAS Latency = 3) .................................. 33
11.14 Auto-precharge Timing (Read Cycle) ................................................................................ 34
11.15 Auto-precharge Timing (Write Cycle) ................................................................................ 35
11.16 Timing Chart of Read to Write Cycle ................................................................................. 36
11.17 Timing Chart of Write to Read Cycle ................................................................................. 36
11.18 Timing Chart of Burst Stop Cycle (Burst Stop Command) ................................................ 37
11.19 Timing Chart of Burst Stop Cycle (Precharge Command) ................................................ 37
11.20 CKE/DQM Input Timing (Write Cycle) ............................................................................... 38
11.21 CKE/DQM Input Timing (Read Cycle) ............................................................................... 39
12. PACKAGE SPECIFICATION ....................................................................................................... 40
13. REVISION HISTORY ................................................................................................................... 41
-2-
Publication Release Date: Apr. 11, 2011
Revision A01
Datasheet pdf - http://www.DataSheet4U.net/


Part Number W9825G2JB
Description 2M X 4 BANKS X 32BITS SDRAM
Maker Winbond
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