ESMT
M12L64164A
Elite Semiconductor Memory Technology Inc.
Publication Date: May 2008
Revision: 3.3
32/46
Read & Write Cycle at Same Bank @ Burst Length = 4
C L O C K
C K E
C S
R A S
C A S
A D D R
W E
D Q
D Q M
A 1 0 / A P
B A 0
B A 1
C L = 2
C L = 3
Row Active
( A - Bank )
Read
( A - Bank )
Write
( A - Bank )
Row Active
( A - Bank )
P r e c h a r g e
( A - B a n k )
: D o n ' t C a r e
Q a 1
Q a 2
Q a 3
Q b 1
Q b 2
Q b 3
Q b 0
Q a 0
R a
* N o t e 2
R b
C b 0
R a
C a 0
C b
H I G H
t
R C D
t
R D L
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
R b
* N o t e 3
Q a 1
Q a 2
Q a 3
Q b 1
Q b 2
Q b 3
Q b 0
Q a 0
t
R D L
* N o t e 3
Precharge
( A - Bank )
*Note :
1. Minimum row cycle times is required to complete internal DRAM operation.
2. Row precharge can interrupt burst on any cycle. [CAS Latency-1] number of valid output data is
available after Row precharge. Last valid output will be Hi-Z (t
SHZ
) after the clock.
3. Output will be Hi-Z after the end of burst. (1,2,4,8 & Full page bit burst)