W989D6DB Datasheet, PDF (2/64 Pages) Winbond – Standard Self Refresh Mode

W989D6DB / W989D2DB
8.2 Write Operation............................................................................................................. 18
8.3 Precharge ..................................................................................................................... 18
8.3.1
Auto Precharge.......................................................................................................18
8.3.2
READ with auto precharge interrupted by a READ (with or without auto precharge)
19
8.3.3
READ with auto precharge interrupted by a WRITE (with or without auto precharge)
19
8.3.4
WRITE with auto precharge interrupted by a READ (with or without auto precharge)
20
8.3.5
WRITE with auto precharge interrupted by a WRITE (with or without auto
precharge) 20
8.4 Burst Termination.......................................................................................................... 21
8.5 Mode Register Operation.............................................................................................. 22
8.5.1
Burst Length field (A2~A0) .....................................................................................22
8.5.2
Addressing Mode Select (A3) .................................................................................22
8.5.3
Addressing Sequence for Sequential Mode............................................................22
8.5.4
8.5.5
Addressing Sequence for Interleave Mode.............................................................23
Addressing Sequence Example (Burst Length = 8 and Input Address is 13) .........23
8.5.6
Read Cycle CAS Latency = 3 .................................................................................23
8.5.7
CAS Latency field (A6~A4).....................................................................................24
8.5.8
Mode Register Definition ........................................................................................24
8.6 Extended Mode Register Description ........................................................................... 25
8.7 Simplified State Diagram .............................................................................................. 26
9. ELECTRICAL CHARACTERISTICS ......................................................................................... 27
9.1 Absolute Maximum Ratings .......................................................................................... 27
9.2 Operating Conditions .................................................................................................... 27
9.3 Capacitance .................................................................................................................. 27
9.4 DC Characteristics ........................................................................................................ 28
9.5 Automatic Temperature Compensated Self Refresh Current Feature ......................... 28
9.6 AC Characteristics and Operating Condition ................................................................ 29
9.6.1
AC Characteristics..................................................................................................29
9.6.2
9.6.3
AC Test Condition ..................................................................................................30
AC Latency Characteristics ....................................................................................31
10. CONTROL TIMING WAVEFORMS .......................................................................................... 32
10.1 Command Input Timing ................................................................................................ 32
10.2 Read Timing.................................................................................................................. 33
10.3 Control Timing of Input Data (x16)................................................................................ 34
10.4 Control Timing of Output Data (x16)............................................................................. 35
10.5 Control Timing of Input Data (x32)................................................................................ 36
10.6 Control Timing of Output Data (x32)............................................................................. 37
10.7 Mode Register Set (MRS) Cycle................................................................................... 38
Publication Release Date: Mar. 19, 2014
-2-
Revision: A01-001