EtronTech
EM636165-XXI
1M x 16 SDRAM
Figure 16.1. Auto Precharge after Read Burst
(Burst Length=4, CAS# Latency=1)
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
CKE
tCK1
High
CS#
RAS#
CAS#
WE#
A11
RAx
RBy
RBy
RBz
RBz
RBx
RBx
A10
CBx
CBy
RAx CAx
CAy
CBz
A0~A9
DQM
DQ
Hi-Z
Ax1 Ax2 Ax3
Ay0
Ay3 By0 By1
By3
Bz2
Bx0
Bx1 Bx2
Bx3
Ay1 Ay2
Ax0
By2
Bz0 Bz1
Bz3
Activate
Command
Bank A
Activate
Command
Bank B
Activate
Command
Bank B
Read with
Activate
Auto Precharge
Command
Bank B
Command
Bank B
Read with
Read
Read with
Read with
Auto Precharge
Command
Bank B
Command
Bank A
Auto Precharge
Command
Auto Precharge
Command
Bank B
Bank A
Preliminary
54
Rev. 1.1 Apr. 2005
ETRON [ ETRON TECHNOLOGY, INC. ]
