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W9412G6IH Datasheet Preview

W9412G6IH Datasheet

2M X 4 BANKS X 16 BITS DDR SDRAM

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W9412G6IH
2M × 4 BANKS × 16 BITS DDR SDRAM
Table of Contents-
1. GENERAL DESCRIPTION ......................................................................................................... 4
2. FEATURES ................................................................................................................................. 4
3. KEY PARAMETERS ................................................................................................................... 5
4. PIN CONFIGURATION ............................................................................................................... 6
5. PIN 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
Publication Release Date: Sep. 16, 2009
- 1 - Revision A06
Datasheet pdf - http://www.DataSheet4U.net/




Winbond

W9412G6IH Datasheet Preview

W9412G6IH Datasheet

2M X 4 BANKS X 16 BITS DDR SDRAM

No Preview Available !

www.DataSheet.co.kr
W9412G6IH
7.10.1 Burst Length field (A2 to A0)...................................................................... 14
7.10.2 Addressing Mode Select (A3) .................................................................... 15
7.10.3
7.10.4
7.10.5
7.10.6
7.10.7
CAS Latency field (A6 to A4) ..................................................................... 16
DLL Reset bit (A8) ..................................................................................... 16
Mode Register/Extended Mode register change bits (BA0, BA1).............. 16
Extended Mode Register field.................................................................... 16
Reserved field ............................................................................................ 16
8. OPERATION MODE ................................................................................................................. 17
8.1 Simplified Truth Table................................................................................................... 17
8.2 Function Truth Table..................................................................................................... 18
8.3 Function Truth Table for CKE ....................................................................................... 21
8.4 Simplified Stated Diagram ............................................................................................ 22
9. ELECTRICAL CHARACTERISTICS......................................................................................... 23
9.1 Absolute Maximum Ratings .......................................................................................... 23
9.2 Recommended DC Operating Conditions .................................................................... 23
9.3 Capacitance .................................................................................................................. 24
9.4 Leakage and Output Buffer Characteristics.................................................................. 24
9.5 DC Characteristics ........................................................................................................ 25
9.6 AC Characteristics and Operating Condition................................................................ 26
9.7 AC Test Conditions....................................................................................................... 27
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 Table 6: Output Slew Rate Matching Ratio Characteristics ......................................... 31
10.7 Table 7: AC Overshoot/Undershoot Specification for Address and Control Pins......... 31
10.8 Table 8: Overshoot/Undershoot Specification for Data, Strobe, and Mask Pins.......... 32
10.9 System Notes:............................................................................................................... 33
11. TIMING WAVEFORMS ............................................................................................................. 35
11.1 Command Input Timing ................................................................................................ 35
11.2 Timing of the CLK Signals ............................................................................................ 35
11.3 Read Timing (Burst Length = 4) ................................................................................... 36
11.4 Write Timing (Burst Length = 4).................................................................................... 37
11.5 DM, DATA MASK (W9412G6IH) .................................................................................. 38
11.6 Mode Register Set (MRS) Timing................................................................................. 39
Publication Release Date: Sep. 16, 2009
- 2 - Revision A06
Datasheet pdf - http://www.DataSheet4U.net/


Part Number W9412G6IH
Description 2M X 4 BANKS X 16 BITS DDR SDRAM
Maker Winbond
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