ESMT
M12L64164A
Operation temperature condition -25℃ ~ 85℃
BASIC FEATURE AND FUNCTION DESCRIPTIONS
1. CLOCK Suspend
1 ) Cl o c k S u sp e n d e d D u r in g W ri t e ( B L = 4 )
C L K
2 ) C lo c k S u s p e n d e d D u r i n g R e a d ( B L = 4 )
CM D
CK E
WR
R D
M a ske d b y C KE
I nt e rn al
CL K
D 3
D3
DQ (C L 2)
DQ (C L3 )
D0
D 0
D 2
D2
Q0
Q1
Q0
Q2
Q1
Q3
Q2
D1
D1
Q3
N o t W ri tt e n
Su spe nd ed D ou t
2. DQM Operation
2 ) R e a d M a s k ( B L = 4 )
1 ) W r i t e M a s k ( B L = 4 )
CLK
C M D
W R
R D
D Q M
DQ ( C L 2 )
DQ ( C L 3 )
M a s k e d b y D Q M
Ma s k e d b y D Q M
H i - Z
D0
D1
Q3
Q0
Q2
D3
H i - Z
D3
D1
D0
Q1
Q2
Q3
DQ M t o D at a -i n M ask = 0
DQ M to D at a- ou t M ask = 2
* N o t e 2
3 ) D Q M w i t h c l c o k s u s p e n d e d ( F u l l P a g e R e a d )
CLK
C M D
CK E
R D
Inter nal
CLK
D Q M
H i - Z
H i - Z
H i - Z
H i - Z
Q0
Q4
Q3
Q8
Q7
Q9
Q8
Q6
Q5
Q7
Q6
Q2
DQ ( C L 2 )
DQ ( C L 3 )
H i - Z
H i - Z
Q1
*Note :1. CKE to CLK disable/enable = 1CLK.
2. DQM masks data out Hi-Z after 2CLKs which should masked by CKE ”L”.
3. DQM masks both data-in and data-out.
Elite Semiconductor Memory Technology Inc.
Publication Date: Dec. 2004
Revision: 0.1 17/44
ESMT [ ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC. ]
