ESMT
M12L64164A
Elite Semiconductor Memory Technology Inc.
Publication Date: May 2008
Revision: 3.3
34/46
Page Read Cycle at Different Bank @ Burst Length = 4
R o w A c t i v e
( A - B a n k )
R o w A c t i v e
( B - B a n k )
R e a d
( A - B a n k )
R o w A c t i v e
( C - B a n k )
R e a d
( B - B a n k )
P r e c h a r g e
( A - B a n k )
R o w A c t i v e
( D - B a n k )
R e a d
( C - B a n k )
P r e c h a r g e
( B - B a n k )
R e a d
( D - B a n k )
P r e c h a r g e
( C - B a n k )
P r e c h a r g e
( D - B a n k )
: D o n ' t C a r e
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
C L O C K
C K E
C S
R A S
C A S
A D D R
W E
C L = 2
D Q M
A 1 0 / A P
B A 0
B A 1
C L = 3
R B b C A a
R C c C B b
R D d C C c
C D d
* N o t e 1
* N o t e 2
R A a
RDd
QBb0
QBb2 QCc0 QCc1 QCc2 QDd0 QDd1 QDd2
QAa1
QAa0
QAa2
QBb1
QAa0 QAa1 QAa2 QBb0
QCc1 QCc2 QDd0
QDd2
QDd1
QBb1
QCc0
QBb2
R A a
R B b
R C c
H I G H
D Q
Note: 1.
CS
can be don’t cared when
RAS
,
CAS
and
WE
are high at the clock high going edge.
2. To interrupt a burst read by row precharge, both the read and the precharge banks must be the same.