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W9464G6IB Datasheet Preview

W9464G6IB Datasheet

1M X 4 BANKS X 16 BITS DDR SDRAM

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www.DataSheet.co.kr
W9464G6IB
1M × 4 BANKS × 16 BITS DDR SDRAM
Table of Contents-
1. GENERAL DESCRIPTION ......................................................................................................... 4
2. FEATURES ................................................................................................................................. 4
3. KEY PARAMETERS ................................................................................................................... 5
4. BALL CONFIGURATION ............................................................................................................ 6
5. BALL DESCRIPTION.................................................................................................................. 7
6. BLOCK DIAGRAM ...................................................................................................................... 8
7. FUNCTIONAL DESCRIPTION.................................................................................................... 9
7.1 Power Up Sequence....................................................................................................... 9
7.2 Command Function ...................................................................................................... 10
7.2.1
Bank Activate Command ........................................................................................10
7.2.2
Bank Precharge Command ....................................................................................10
7.2.3
Precharge All Command ........................................................................................10
7.2.4
Write Command......................................................................................................10
7.2.5
Write with Auto-precharge Command.....................................................................10
7.2.6
Read Command .....................................................................................................10
7.2.7
Read with Auto-precharge Command ....................................................................10
7.2.8
Mode Register Set Command ................................................................................11
7.2.9
Extended Mode Register Set Command ................................................................11
7.2.10
No-Operation Command ........................................................................................11
7.2.11
Burst Read Stop Command....................................................................................11
7.2.12
Device Deselect Command ....................................................................................11
7.2.13
Auto Refresh Command .........................................................................................11
7.2.14
Self Refresh Entry Command .................................................................................12
7.2.15
Self Refresh Exit Command ...................................................................................12
7.2.16
Data Write Enable /Disable Command ...................................................................12
7.3 Read Operation............................................................................................................. 12
7.4 Write Operation............................................................................................................. 13
7.5 Precharge ..................................................................................................................... 13
7.6 Burst Termination.......................................................................................................... 13
7.7 Refresh Operation......................................................................................................... 13
7.8 Power Down Mode ....................................................................................................... 14
7.9 Input Clock Frequency Change during Precharge Power Down Mode........................ 14
7.10 Mode Register Operation.............................................................................................. 14
7.10.1
Burst Length field (A2 to A0)...................................................................................14
Publication Release Date:Oct. 16, 2008
- 1 - Revision A01
Datasheet pdf - http://www.DataSheet4U.net/




Winbond

W9464G6IB Datasheet Preview

W9464G6IB Datasheet

1M X 4 BANKS X 16 BITS DDR SDRAM

No Preview Available !

www.DataSheet.co.kr
W9464G6IB
7.10.2
Addressing Mode Select (A3) .................................................................................15
7.10.3
CAS Latency field (A6 to A4) ..................................................................................16
7.10.4
DLL Reset bit (A8) ..................................................................................................16
7.10.5
7.10.6
7.10.7
Mode Register/Extended Mode register change bits (BA0, BA1) ...........................16
Extended Mode Register field.................................................................................17
Reserved field.........................................................................................................17
8. OPERATION MODE ................................................................................................................. 18
8.1 Simplified Truth Table................................................................................................... 18
8.2 Function Truth Table..................................................................................................... 19
8.3 Function Truth Table for CKE ....................................................................................... 22
8.4 Simplified Stated Diagram ............................................................................................ 23
9. ELECTRICAL CHARACTERISTICS......................................................................................... 24
9.1 Absolute Maximum Ratings .......................................................................................... 24
9.2 Recommended DC Operating Conditions .................................................................... 24
9.3 Capacitance .................................................................................................................. 25
9.4 Leakage and Output Buffer Characteristics.................................................................. 25
9.5 DC Characteristics ........................................................................................................ 26
9.6 AC Characteristics and Operating Condition................................................................ 27
9.7 AC Test Conditions....................................................................................................... 28
10. SYSTEM CHARACTERISTICS FOR DDR SDRAM................................................................. 30
10.1 Table 1: Input Slew Rate for DQ, DQS, and DM .......................................................... 30
10.2 Table 2: Input Setup & Hold Time Derating for Slew Rate ........................................... 30
10.3 Table 3: Input/Output Setup & Hold Time Derating for Slew Rate ............................... 30
10.4 Table 4: Input/Output Setup & Hold Derating for Rise/Fall Delta Slew Rate................ 30
10.5 Table 5: Output Slew Rate Characteristics (X16 Devices only) ................................... 30
10.6 System Notes:............................................................................................................... 31
11. TIMING WAVEFORMS ............................................................................................................. 33
11.1 Command Input Timing ................................................................................................ 33
11.2 Timing of the CLK Signals ............................................................................................ 33
11.3 Read Timing (Burst Length = 4) ................................................................................... 34
11.4 Write Timing (Burst Length = 4).................................................................................... 35
11.5 DM, DATA MASK (W9464G6IB) .................................................................................. 36
11.6 Mode Register Set (MRS) Timing................................................................................. 37
11.7 Extend Mode Register Set (EMRS) Timing .................................................................. 38
11.8 Auto-precharge Timing (Read Cycle, CL = 2) .............................................................. 39
11.9 Auto-precharge Timing (Read cycle, CL = 2), continued ............................................. 40
11.10 Auto-precharge Timing (Write Cycle).......................................................................... 41
Publication Release Date:Oct. 16, 2008
- 2 - Revision A01
Datasheet pdf - http://www.DataSheet4U.net/


Part Number W9464G6IB
Description 1M X 4 BANKS X 16 BITS DDR SDRAM
Maker Winbond
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