IC42S32400 Datasheet, PDF (51/62 Pages) Integrated Circuit Solution Inc – 1M x 32 Bit x 4 Banks (128-MBIT) SDRAM

IC42S32400
IC42S32400L
Figure 17.3.Auto Precharge after Write Burst (Burst Length=4,CAS#Latency=3)
T0 T 1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T 11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
t CK3
CKE ^High
CS#
RAS#
CAS#
WE#
‘
BS0,1
A9 ^RAx
RBx
RBy
A0-A9 RAx
CAx RBx
CBx
CAy
RBy
CBy
DQM
Hi-Z
DQ
Activate
Command
Bank A
DAx0 _{DAx1 DAx2 DAx3 DBx0 DBx1 DBx2 DBx3 DAy0 DAy1 DAy2 DAy3}
DBy0 DBy1 DBy2 DBy3
Activate
Command
Bank B
Write
Command
Bank A
Write with
Auto Precharge
Command
Bank B
Write with
Auto Precharge
Command
Bank A
Activate
Command
Bank B
Write with
Auto Precharge
Command
Bank B
Integrated Circuit Solution Inc.
51
DR038-0C 02/01/2005