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Winbond

W9825G6JB Datasheet Preview

W9825G6JB Datasheet

4M x 4-BANKS x 16-BITS SDRAM

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W9825G6JB
4 M 4 BANKS 16 BITS SDRAM
Table of Contents-
1. GENERAL DESCRIPTION ......................................................................................................... 3
2. FEATURES ................................................................................................................................. 3
3. ORDER INFORMATION ............................................................................................................. 3
4. BALL CONFIGURATION ............................................................................................................ 4
5. BALL 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 .................................................................................................................. 14
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
10.3 Control Timing of Input/Output Data ............................................................................. 19
Publication Release Date: Jul. 17, 2014
- 1 - Revision: A05




Winbond

W9825G6JB Datasheet Preview

W9825G6JB Datasheet

4M x 4-BANKS x 16-BITS SDRAM

No Preview Available !

W9825G6JB
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 Power Down Mode ...................................................................................................... 34
11.15 Auto-precharge Timing (Read Cycle).......................................................................... 35
11.16 Auto-precharge Timing (Write Cycle) .......................................................................... 36
11.17 Timing Chart of Read to Write Cycle........................................................................... 37
11.18 Timing Chart of Write to Read Cycle........................................................................... 37
11.19 Timing Chart of Burst Stop Cycle (Burst Stop Command) .......................................... 38
11.20 Timing Chart of Burst Stop Cycle (Precharge Command) .......................................... 38
11.21 CKE/DQM Input Timing (Write Cycle) ......................................................................... 39
11.22 CKE/DQM Input Timing (Read Cycle)......................................................................... 40
12. PACKAGE SPECIFICATION .................................................................................................... 41
13. REVISION HISTORY ................................................................................................................ 42
Publication Release Date: Jul. 17, 2014
- 2 - Revision: A05


Part Number W9825G6JB
Description 4M x 4-BANKS x 16-BITS SDRAM
Maker Winbond
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