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W987D6HB Datasheet Preview

W987D6HB Datasheet

128Mb Mobile LPSDR

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W987D6HB / W987D2HB
128Mb 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: Apr. 21, 2016
Revision: A01-005
-1-




Winbond

W987D6HB Datasheet Preview

W987D6HB Datasheet

128Mb Mobile LPSDR

No Preview Available !

W987D6HB / W987D2HB
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: Apr. 21, 2016
Revision: A01-005
-2-


Part Number W987D6HB
Description 128Mb Mobile LPSDR
Maker Winbond
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