EtronTech
EM636165-XXI
1M x 16 SDRAM
Figure 17.1. Auto Precharge after Write 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
tCK1
High
CKE
CS#
RAS#
CAS#
WE#
A11
RAx
RBx
RBx
RAz
RAz
RBy
RBy
A10
A0~A9
DQM
RAx CAx
CBx
CAz
CAy
CBy
Hi-Z
DAx0
DBy1 DBy2 DBy3
DAz0 DAz0
DAz0 DAz0
DQ
DAx1 DAx2 DAx3
Activate
DAy0
DAy3 DBy0
DBx0 DBx1 DBx2 DBx3
DAy1 DAy2
Write with
Write with
Activate
Command
Bank A
Activate
Command
Bank B
Activate
Command
Bank A
Auto Precharge
Command
Bank B
Auto Precharge
Command
Bank B
Command
Bank B
Write
Command
Bank A
Write with
Write with
Auto Precharge
Command
Auto Precharge
Command
Bank A
Bank A
Preliminary
57
Rev. 1.1 Apr. 2005
ETRON [ ETRON TECHNOLOGY, INC. ]
