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W9412G2IB4 Datasheet(PDF) 2 Page - Winbond

Part No. W9412G2IB4
Description  Double Data Rate architecture; two data transfers per clock cycle
Download  50 Pages
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Manufacturer  WINBOND [Winbond]
Direct Link  http://www.winbond.com
Logo WINBOND - Winbond

W9412G2IB4 Datasheet(HTML) 2 Page - Winbond

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W9412G2IB
Publication Release Date: Aug. 30, 2010
- 2 -
Revision A06
7.10.3
CAS Latency field (A6 to A4)................................................................................................17
7.10.4
DLL Reset bit (A8)................................................................................................................17
7.10.5
Mode Register /Extended Mode register change bits (BA0, BA1) ........................................17
7.10.6
Extended Mode Register field ..............................................................................................18
7.10.7
Reserved field ......................................................................................................................18
8. OPERATION MODE.........................................................................................................................................19
8.1
Simplified Truth Table.........................................................................................................................19
8.2
Function Truth Table ..........................................................................................................................20
8.3
Function Truth Table, continued.........................................................................................................21
8.4
Function Truth Table, continued.........................................................................................................22
8.5
Function Truth Table for CKE.............................................................................................................23
8.6
Simplified Stated Diagram ..................................................................................................................24
9. ELECTRICAL CHARACTERISTICS.................................................................................................................25
9.1
Absolute Maximum Ratings................................................................................................................25
9.2
Recommended DC Operating Conditions ..........................................................................................25
9.3
Capacitance .......................................................................................................................................26
9.4
Leakage and Output Buffer Characteristics........................................................................................26
9.5
DC Characteristics..............................................................................................................................27
9.6
AC Characteristics and Operating Condition ......................................................................................28
9.7
AC Test Conditions.............................................................................................................................29
10. TIMING WAVEFORMS ....................................................................................................................................32
10.1
Command Input Timing ......................................................................................................................32
10.2
Timing of the CLK Signals ..................................................................................................................32
10.3
Read Timing (Burst Length = 4) .........................................................................................................33
10.4
Write Timing (Burst Length = 4)..........................................................................................................34
10.5
DM, DATA MASK (W9412G2IB) ........................................................................................................35
10.6
Mode Register Set (MRS) Timing.......................................................................................................36
10.7
Extend Mode Register Set (EMRS) Timing ........................................................................................37
10.8
Auto-precharge Timing (Read Cycle, CL = 2).....................................................................................38
10.9
Auto-precharge Timing (Read cycle, CL = 2), continued....................................................................39
10.10 Auto-precharge Timing (Write Cycle) .................................................................................................40
10.11 Read Interrupted by Read (CL = 2, BL = 2, 4, 8)................................................................................41
10.12 Burst Read Stop (BL = 8) ...................................................................................................................41
10.13 Read Interrupted by Write & BST (BL = 8) .........................................................................................42
10.14 Read Interrupted by Precharge (BL = 8) ............................................................................................42
10.15 Write Interrupted by Write (BL = 2, 4, 8).............................................................................................43
10.16 Write Interrupted by Read (CL = 2, BL = 8) ........................................................................................43
10.17 Write Interrupted by Read (CL = 3, BL = 4) ........................................................................................44
10.18 Write Interrupted by Precharge (BL = 8).............................................................................................44


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