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W949D2CBHX6G Datasheet(PDF) 3 Page - Winbond |
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W949D2CBHX6G Datasheet(HTML) 3 Page - Winbond |
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3 / 65 page  W989D6CB / W989D2CB 512Mb Mobile LPSDR Publication Release Date : August 07, 2013 - 3 - Revision : A01-006 TABLE OF CONTENTS 1. GENERAL DESCRIPTION .......................................................................................................... 1 2. FEATURES.................................................................................................................................. 1 3.ORDERING INFORMATION ........................................................................................................ 2 4. PIN CONFIGURATION................................................................................................................ 5 4.1 Ball Assignment: LPSDR X 16 ............................................................................................................5 4.2 Ball Assignment: LPSDR X 32 ............................................................................................................5 5. PIN DESCRIPTION...................................................................................................................... 6 5.1 Signal Description ...............................................................................................................................6 5.2 Addressing Table ................................................................................................................................6 6. BLOCK DIAGRAM ...................................................................................................................... 7 7. ELECTRICAL CHARACTERISTICS ........................................................................................... 8 7.1 Absolute Maximum Ratings ................................................................................................................8 7.2 Operating Conditions ..........................................................................................................................8 7.3 Capacitance ........................................................................................................................................8 7.4 DC Characteristics ..............................................................................................................................9 7.5 Automatic Temperature Compensated Self Refresh Current Feature ..............................................11 7.6 AC Characteristics And AC Operating Conditions ............................................................................12 7.6.1 AC Characteristics.................................................................................................................................... 12 7.6.2 AC Test Condition .................................................................................................................................... 13 7.6.3 AC Latency Characteristics...................................................................................................................... 14 8. FUNCTION DESCRIPTION ....................................................................................................... 15 8.1 Command Function...........................................................................................................................15 8.1.1Table 1. Truth Table .................................................................................................................................. 15 8.1.2 Functional Truth Table ............................................................................................................................. 16 8.1.3 Function Truth Table for CKE .................................................................................................................. 19 8.1.4 Bank Activate Command.......................................................................................................................... 20 8.1.5 Bank Precharge Command...................................................................................................................... 20 8.1.6 Precharge All Command .......................................................................................................................... 20 8.1.7 Write Command ....................................................................................................................................... 20 8.1.8 Write with Auto Precharge Command...................................................................................................... 20 8.1.9 Read Command ....................................................................................................................................... 20 8.1.10 Read with Auto Precharge Command.................................................................................................... 20 8.1.11 Extended Mode Register Set Command ............................................................................................... 20 8.1.12 Mode Register Set Command................................................................................................................ 21 8.1.13 No-Operation Command ........................................................................................................................ 21 8.1.14 Burst Stop Command ............................................................................................................................. 21 8.1.15 Device Deselect Command.................................................................................................................... 21 8.1.16 Auto Refresh Command......................................................................................................................... 21 8.1.17 Self Refresh Entry Command ................................................................................................................ 21 8.1.18 Self Refresh Exit Command................................................................................................................... 21 8.1.19 Clock Suspend Mode Entry/Power Down Mode Entry Command......................................................... 21 8.1.20 Clock Suspend Mode Exit / Power Down Mode Exit Command............................................................ 21 8.1.21 Data Write/Output Enable, Data Mask/Output Disable Command ........................................................ 22 9.OPERATION............................................................................................................................... 22 9.1 Read Operation.................................................................................................................................22 9.2 Write Operation .................................................................................................................................22 9.3 Precharge .........................................................................................................................................23 9.3.1 Auto Precharge ........................................................................................................................................ 23 9.3.2 READ with auto precharge interrupted by a READ (with or without auto precharge) ............................. 23 9.3.3 READ with auto precharge interrupted by a WRITE (with or without auto precharge)............................ 24 9.3.4 WRITE with auto precharge interrupted by a READ (with or without auto precharge)............................ 24 |
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