EtronTech
EM636165-XXI
1M x 16 SDRAM
Figure 16.2. Auto Precharge after Read Burst
(Burst Length=4, CAS# Latency=2)
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
tCK2
High
CKE
CS#
RAS#
CAS#
WE#
A11
A10
RAx
RAz
RAz
RBx
RBx
RBy
RBy
RAx
CAz
CAx
CBx
RAy
CBy
A0~A9
DQM
Hi-Z
Ax1 Ax2 Ax3 Bx0
Bx1 Bx2
Bx3 Ay0 Ay1
Activate
Ay2 Ay3
By0 By1
Activate
By3
Az2
Ax0
By2
DQ
Az0
Az1
Activate
Read
Activate
Read with
Read with
Read with
Read with
Command Command
Command Auto Precharge
Auto Precharge Command Auto Precharge Command Auto Precharge
Bank A
Bank A
Bank B
Command
Bank B
Command
Bank A
Bank B
Command
Bank B
Bank A
Command
Bank A
Preliminary
55
Rev. 1.1 Apr. 2005
ETRON [ ETRON TECHNOLOGY, INC. ]
