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ESMT
Mode Register Set Cycle
0
1
2
C L O C K
C K E
C S
* N o t e 2
R A S
* N o t e 1
C A S
* N o t e 3
A D D R
K e y
D Q
W E
D Q M
M R S
All banks precharge should be completed before Mode Register Set cycle and auto refresh cycle.
MODE REGISTER SET CYCLE
*Note : 1. CS , RAS , CAS , & WE activation at the same clock cycle with address key will set internal
mode register.
2. Minimum 2 clock cycles should be met before new RAS activation.
3. Please refer to Mode Register Set table.
Elite Semiconductor Memory Technology Inc.
3
4
5
6
H I G H
R a
H I - Z
N e w
C o m m a n d
Auto Refresh Cycle
0
1
2
3
4
H I G H
H I - Z
A u t o R e f r e s h
M12L64164A
5
6
7
8
9
t
R F C
N e w C o m m a n d
: D o n ' t C a r e
Publication Date: May 2008
Revision: 3.3
1 0
43/46
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