W9412G6CH
Publication Release Date:Jul. 04, 2007
- 2 - Revision A06
7.9.2 Addressing Mode Select (A3).........................................................................................14
7.9.3 CAS Latency field (A6 to A4)..........................................................................................16
7.9.4 DLL Reset bit (A8) ..........................................................................................................16
7.9.5 Mode Register/Extended Mode register change bits (BS0, BS1) ...................................16
7.9.6 Extended Mode Register field ........................................................................................17
7.9.7 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.............................................................................................................. 29
10. SYSTEM CHARACTERISTICS FOR DDR SDRAM...................................................................... 32
10.1 Table 1: Input Slew Rate for DQ, DQS, and DM................................................................. 32
10.2 Table 2: Input Setup & Hold Time Derating for Slew Rate.................................................. 32
10.3 Table 3: Input/Output Setup & Hold Time Derating for Slew Rate...................................... 32
10.4 Table 4: Input/Output Setup & Hold Derating for Rise/Fall Delta Slew Rate ...................... 32
10.5 Table 5: Output Slew Rate Characteristics (X16 Devices only).......................................... 32
10.6 Table 6: Output Slew Rate Matching Ratio Characteristics ................................................ 33
10.7 Table 7: AC Overshoot/Undershoot Specification for Address and Control Pins ............... 33
10.8 Table 8: Overshoot/Undershoot Specification for Data, Strobe, and Mask Pins ................ 34
10.9 System Notes: ..................................................................................................................... 35
11. TIMING WAVEFORMS .................................................................................................................. 37
11.1 Command Input Timing ....................................................................................................... 37
11.2 Timing of the CLK Signals................................................................................................... 37
11.3 Read Timing (Burst Length = 4) .......................................................................................... 38
11.4 Write Timing (Burst Length = 4) .......................................................................................... 39
11.5 DM, DATA MASK (W9412G6CH) ....................................................................................... 40
11.6 Mode Register Set (MRS) Timing ....................................................................................... 41
