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W988D2FB Datasheet(PDF) 1 Page - Winbond |
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W988D2FB Datasheet(HTML) 1 Page - Winbond |
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1 / 68 page  W988D6FB / W988D2FB 256Mb Mobile LPSDR Publication Release Date : May, 18, 2011 - 1 - Revision A01-002 TABLE OF CONTENTS 1. GENERAL DESCRIPTION .......................................................................................................... 4 2. FEATURES.................................................................................................................................. 4 3. PIN CONFIGURATION................................................................................................................ 5 3.1 Ball Assignment: LPSDR X 16 ......................................................................................................... 5 3.2 Ball Assignment: LPSDR X 32 ......................................................................................................... 5 4. PIN DESCRIPTION...................................................................................................................... 6 4.1 Signal Description ............................................................................................................................ 6 4.2 Addressing Table ............................................................................................................................. 6 5. BLOCK DIAGRAM ...................................................................................................................... 7 6. ELECTRICAL CHARACTERISTICS ........................................................................................... 8 6.1 Absolute Maximum Ratings.............................................................................................................. 8 6.2 Operating Conditions ....................................................................................................................... 8 6.3 Capacitance ..................................................................................................................................... 8 6.4 DC Characteristics ........................................................................................................................... 9 6.5 Automatic Temperature Compensated Self Refresh Current Feature............................................. 11 6.6 AC Characteristics And AC Operating Conditions .......................................................................... 12 6.6.1 AC Characteristics.................................................................................................................................... 12 6.6.2 AC Test Condition .................................................................................................................................... 13 6.6.3 AC Latency Characteristics ...................................................................................................................... 14 7. FUNCTION DESCRIPTION ....................................................................................................... 15 7.1 Command Function........................................................................................................................ 15 7.1.1Table 1. Truth Table .................................................................................................................................. 15 7.1.2 Functional Truth Table ............................................................................................................................. 16 7.1.3 Function Truth Table for CKE .................................................................................................................. 19 7.1.4 Bank Activate Command.......................................................................................................................... 20 7.1.5 Bank Precharge Command ...................................................................................................................... 20 7.1.6 Precharge All Command .......................................................................................................................... 20 7.1.7 Write Command ....................................................................................................................................... 20 7.1.8 Write with Auto Precharge Command...................................................................................................... 20 7.1.9 Read Command ....................................................................................................................................... 20 7.1.10 Read with Auto Precharge Command ................................................................................................... 20 7.1.11 Extended Mode Register Set Command ............................................................................................... 20 7.1.12 Mode Register Set Command................................................................................................................ 21 7.1.13 No-Operation Command ........................................................................................................................ 21 7.1.14 Burst Stop Command ............................................................................................................................. 21 7.1.15 Device Deselect Command.................................................................................................................... 21 7.1.16 Auto Refresh Command......................................................................................................................... 21 7.1.17 Self Refresh Entry Command ................................................................................................................ 21 7.1.18 Self Refresh Exit Command ................................................................................................................... 21 7.1.19 Clock Suspend Mode Entry/Power Down Mode Entry Command ......................................................... 21 7.1.20 Clock Suspend Mode Exit/Power Down Mode Exit Command.............................................................. 21 |
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