W9812G2IB Datasheet, PDF (2/43 Pages) Winbond – 1M × 4 BANKS × 32BITS SDRAM

W9812G2IB
9.4 DC Characteristics ............................................................................................................ 15
9.5 AC Characteristics and Operating Condition .................................................................... 16
10. TIMING WAVEFORMS.................................................................................................................. 18
10.1 Command Input Timing..................................................................................................... 18
10.2 Read Timing...................................................................................................................... 19
10.3 Control Timing of Input/Output Data ................................................................................. 20
10.4 Mode Register Set Cycle .................................................................................................. 21
11. OPERATING TIMING EXAMPLE.................................................................................................. 22
11.1 Interleaved Bank Read (Burst Length = 4, CAS Latency = 3) .......................................... 22
11.2 Interleaved Bank Read (Burst Length = 4, CAS Latency = 3, Auto-precharge) ............... 23
11.3 Interleaved Bank Read (Burst Length = 8, CAS Latency = 3) .......................................... 24
11.4 Interleaved Bank Read (Burst Length = 8, CAS Latency = 3, Auto-precharge) ............... 25
11.5 Interleaved Bank Write (Burst Length = 8) ....................................................................... 26
11.6 Interleaved Bank Write (Burst Length = 8, Auto-precharge) ............................................ 27
11.7 Page Mode Read (Burst Length = 4, CAS Latency = 3)................................................... 28
11.8 Page Mode Read / Write (Burst Length = 8, CAS Latency = 3) ....................................... 29
11.9 Auto-precharge Read (Burst Length = 4, CAS Latency = 3) ............................................ 30
11.10 Auto-precharge Write (Burst Length = 4).......................................................................... 31
11.11 Auto Refresh Cycle ........................................................................................................... 32
11.12 Self Refresh Cycle ............................................................................................................ 33
11.13 Burst Read and Single Write (Burst Length = 4, CAS Latency = 3) ................................. 34
11.14 Power Down Mode............................................................................................................ 35
11.15 Auto-precharge Timing (Read Cycle) ............................................................................... 36
11.16 Auto-precharge Timing (Write Cycle) ............................................................................... 37
11.17 Timing Chart of Read to Write Cycle ................................................................................ 38
11.18 Timing Chart of Write to Read Cycle ................................................................................ 38
11.19 Timing Chart of Burst Stop Cycle (Burst Stop Command) ............................................... 39
11.20 Timing Chart of Burst Stop Cycle (Precharge Command)................................................ 39
11.21 CKE/DQM Input Timing (Write Cycle) .............................................................................. 40
11.22 CKE/DQM Input Timing (Read Cycle) .............................................................................. 41
12. PACKAGE SPECIFICATION......................................................................................................... 42
12.1 TFBGA 90 Balls (8X13 mm², Ball pitch: 0.8mm, Ø=0.45mm) .......................................... 42
13. REVISION HISTORY..................................................................................................................... 43
Publication Release Date: Mar. 09, 2010
-2-
Revision A04