W989D6DB / W989D2DB 512Mb Mobile LPSDR Table of Contents- 1. GENERAL DESCRIPTION ............................................................................................................. 4 2. FEATURES ..................................................................................................................................... 4 3. ORDER INFORMATION ................................................................................................................. 4 4. BALL CONFIGURATION ................................................................................................................ 5 4.1 Ball Assignment: LPSDR x16 ........................................................................................ 5 4.2 Ball Assignment: LPSDR x32 ........................................................................................ 6 5. BALL DESCRIPTION ...................................................................................................................... 7 5.1 Signal Description ......................................................................................................... 7 5.2 Addressing Table .......................................................................................................... 8 6. BLOCK DIAGRAM .......................................................................................................................... 9 7. FUNCTIONAL DESCRIPTION ...................................................................................................... 10 7.1 Command Function ..................................................................................................... 10 7.1.1 Table 1. Truth Table (Note (1) and (2)) ............................................................................ 10 7.1.2 Functional Truth Table (See Note 1) ................................................................................ 11 7.1.3 Functional Truth Table for CKE ........................................................................................ 14 7.1.4 Bank Activate Command .................................................................................................. 15 7.1.5 Bank Precharge Command .............................................................................................. 15 7.1.6 Precharge All Command .................................................................................................. 15 7.1.7 Write Command ............................................................................................................... 15 7.1.8 Write with Auto Precharge Command .............................................................................. 15 7.1.9 Read Command ............................................................................................................... 15 7.1.10 Read with Auto Precharge Command .............................................................................. 15 7.1.11 Extended Mode Register Set Command .......................................................................... 16 7.1.12 Mode Register Set Command .......................................................................................... 16 7.1.13 No-Operation Command .................................................................................................. 16 7.1.14 Burst Stop Command ....................................................................................................... 16 7.1.15 Device Deselect Command .............................................................................................. 16 7.1.16 Auto Refresh Command ................................................................................................... 16 7.1.17 Self Refresh Entry Command........................................................................................... 16 7.1.18 Self Refresh Exit Command ............................................................................................. 17 7.1.19 Clock Suspend Mode Entry/Power Down Mode Entry Command .................................... 17 7.1.20 Clock Suspend Mode Exit/Power Down Mode Exit Command ........................................ 17 7.1.21 Data Write/Output Enable, Data Mask/Output Disable Command ................................... 17 8. OPERATION ................................................................................................................................. 17 8.1 Read Operation ........................................................................................................... 17 8.2 Write Operation ........................................................................................................... 18 8.3 Precharge .................................................................................................................... 18 8.3.1 Auto Precharge ................................................................................................................ 18 8.3.2 READ with auto precharge interrupted by a READ (with or without auto precharge) ....... 19 8.3.3 READ with auto precharge interrupted by a WRITE (with or without auto precharge) ..... 19 Publication Release Date: Dec. 01, 2016 Revision: A01-002 - 1 - W989D6DB / W989D2DB 8.3.4 WRITE with auto precharge interrupted by a READ (with or without auto precharge) ..... 20 8.3.5 WRITE with auto precharge interrupted by a WRITE (with or without auto precharge) .... 20 8.4 Burst Termination ........................................................................................................ 21 8.5 Mode Register Operation ............................................................................................ 22 8.5.1 Burst Length field (A2~A0) ............................................................................................... 22 8.5.2 Addressing Mode Select (A3) .......................................................................................... 22 8.5.3 Addressing Sequence for Sequential Mode ..................................................................... 22 8.5.4 Addressing Sequence for Interleave Mode ...................................................................... 23 8.5.5 Addressing Sequence Example (Burst Length = 8 and Input Address is 13) ................... 23 8.5.6 Read Cycle CAS Latency = 3 ........................................................................................... 23 8.5.7 CAS Latency field (A6~A4) .............................................................................................. 24 8.5.8 Mode Register Definition .................................................................................................. 24 8.6 Extended Mode Register Description .......................................................................... 25 8.7 Simplified State Diagram ............................................................................................. 26 9. ELECTRICAL CHARACTERISTICS ............................................................................................. 27 9.1 Absolute Maximum Ratings ......................................................................................... 27 9.2 Operating Conditions ................................................................................................... 27 9.3 Capacitance ................................................................................................................. 27 9.4 DC Characteristics ...................................................................................................... 28 9.5 Automatic Temperature Compensated Self Refresh Current Feature ........................ 28 9.6 AC Characteristics and Operating Condition .............................................................. 29 9.6.1 AC Characteristics ........................................................................................................... 29 9.6.2 AC Test Condition ............................................................................................................ 30 9.6.3 AC Latency Characteristics .............................................................................................. 31 10. CONTROL TIMING WAVEFORMS ...................................................................................... 32 10.1 Command Input Timing ............................................................................................... 32 10.2 Read Timing ................................................................................................................ 33 10.3 Control Timing of Input Data (x16) .............................................................................. 34 10.4 Control Timing of Output Data (x16) ........................................................................... 35 10.5 Control Timing of Input Data (x32) .............................................................................. 36 10.6 Control Timing of Output Data (x32) ........................................................................... 37 10.7 Mode Register Set (MRS) Cycle ................................................................................. 38 10.8 Extended Mode register Set (EMRS) Cycle ................................................................ 39 11. OPERATING TIMING EXAMPLE ......................................................................................... 40 11.1 Interleaved Bank Read (Burst Length = 4, CAS Latency = 3) .................................... 40 11.2 Interleaved Bank Read (Burst Length = 4, CAS Latency = 3, Auto-precharge) ......... 41 11.3 Interleaved Bank Read (Burst Length = 8, CAS Latency = 3) .................................... 42 11.4 Interleaved Bank Read (Burst Length = 8, CAS Latency = 3, Auto-precharge) ......... 43 11.5 Interleaved Bank Write (Burst Length = 8) .................................................................. 44 11.6 Interleaved Bank Write (Burst Length = 8, Auto-precharge) ....................................... 45 11.7 Page Mode Read (Burst Length = 4, CAS Latency = 3) ............................................. 46 11.8 Page Mode Read / Write (Burst Length = 8, CAS Latency = 3) .................................. 47 11.9 Auto-precharge Read (Burst Length = 4, CAS Latency = 3) ....................................... 48 11.10 Auto-precharge Write (Burst Length = 4) .................................................................... 49 11.11 Auto Refresh Cycle ..................................................................................................... 50 Publication Release Date: Dec. 01, 2016 Revision: A01-002 - 2 -