HYB39S64400 Datasheet, PDF (39/53 Pages) Siemens Semiconductor Group – 64 MBit Synchronous DRAM

15. Auto Refresh (CBR)
Burst Length = 4, CAS Latency = 2
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 _T11 T12 _{T13 T14 T15 T16 T17 T18 T19 T20 T21 T22}
CLK
t_CK2
CKE
CS
RAS
CAS
WE
BS
AP
RAx
Addr
t_RP
t_RC
t_RC
DQM
(Minimum Interval)
Hi-Z
DQ
Precharge Auto Refresh
Command Command
All Banks
Auto Refresh
Command
RAx
CAx
Activate
Command
Bank A
Read
Command
Bank A
Ax0 Ax1 Ax2 Ax3