W9425G6JH
Publication Release Date: Aug. 27, 2013
- 2 - Revision A03
8.10.2 Addressing Mode Select (A3) ............................................................................................... 15
8.10.3 CAS Latency field (A6 to A4) ................................................................................................ 16
8.10.4 DLL Reset bit (A8) ................................................................................................................ 16
8.10.5 Mode Register /Extended Mode register change bits (BA0, BA1) ........................................ 16
8.10.6 Extended Mode Register field .............................................................................................. 16
8.10.7 Reserved field ...................................................................................................................... 16
9. OPERATION MODE .................................................................................................................................... 17
9.1 Simplified Truth Table ...................................................................................................................... 17
9.2 Function Truth Table ........................................................................................................................ 18
9.3 Function Truth Table for CKE ........................................................................................................... 21
9.4 Simplified Stated Diagram ................................................................................................................ 22
10. ELECTRICAL CHARACTERISTICS ............................................................................................................ 23
10.1 Absolute Maximum Ratings .............................................................................................................. 23
10.2 Recommended DC Operating Conditions ........................................................................................ 23
10.3 Capacitance ..................................................................................................................................... 24
10.4 Leakage and Output Buffer Characteristics ...................................................................................... 24
10.5 DC Characteristics ........................................................................................................................... 25
10.6 AC Characteristics and Operating Condition .................................................................................... 26
10.7 AC Test Conditions .......................................................................................................................... 27
11. SYSTEM CHARACTERISTICS FOR DDR SDRAM..................................................................................... 29
11.1 Table 1: Input Slew Rate for DQ, DQS, and DM .............................................................................. 29
11.2 Table 2: Input Setup & Hold Time Derating for Slew Rate ............................................................... 29
11.3 Table 3: Input/Output Setup & Hold Time Derating for Slew Rate .................................................... 29
11.4 Table 4: Input/Output Setup & Hold Derating for Rise/Fall Delta Slew Rate .................................... 29
11.5 Table 5: Output Slew Rate Characteristics (X16 Devices only) ........................................................ 29
11.6 Table 6: Output Slew Rate Matching Ratio Characteristics .............................................................. 30
11.7 Table 7: AC Overshoot/Undershoot Specification for Address and Control Pins.............................. 30
11.8 Table 8: Overshoot/Undershoot Specification for Data, Strobe, and Mask Pins............................... 31
11.9 System Notes: .................................................................................................................................. 32
12. TIMING WAVEFORMS ................................................................................................................................ 34
12.1 Command Input Timing .................................................................................................................... 34
12.2 Timing of the CLK Signals ................................................................................................................ 34
12.3 Read Timing (Burst Length = 4) ....................................................................................................... 35
12.4 Write Timing (Burst Length = 4) ....................................................................................................... 36
12.5 DM, DATA MASK (W9425G6JH) ..................................................................................................... 37
12.6 Mode Register Set (MRS) Timing ..................................................................................................... 38
12.7 Extend Mode Register Set (EMRS) Timing ...................................................................................... 39
12.8 Auto-precharge Timing (Read Cycle, CL = 2) .................................................................................. 40
12.9 Auto-precharge Timing (Read cycle, CL = 2), continued .................................................................. 41