AS4C4M16S Datasheet, PDF (44/53 Pages) Alliance Semiconductor Corporation – Fully synchronous operation

FEBRUARY 2011
AS4C4M16S
Figure 34.1. Auto Precharge after Read Burst (Burst Length=4, CAS# Latency=2)
CLK
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CKE ^High
CS#
RAS#
Begin Auto
Precharge
Bank B
Begin Auto
Precharge
Bank A
CAS#
WE#
BA0,1
A10
RAx
A0-A9,
RAx
A11
DQM
DQ ^Hi-Z
Activate
Cammand
Bank A
CAx
RBx
RBx
CBx
RAy
tRP
RBy
RBy
CBy
RAz
RAz
Ax0 Ax1 Ax2 Ax3
Bx0 Bx1 Bx2 Bx3 Ay0 Ay1 Ay2 Ay3
By0 By1 By2
Read
Activate
Command Command
Bank A Bank B
Read with
Auto Precharge
Command
Bank B
Read with
Auto Precharge
Command
Bank A
Activate
Command
Bank B
Activate
Command
Bank A
Read with
Auto Precharge
Command
Bank B
Don’t Care
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Rev2.0 May 2014