AUSTIN SEMICONDUCTOR, INC.
AS4LC1M16 883C
1 MEG x 16 DRAM
PRELIMINARY
TRUTH TABLE
ADDRESSES
FUNCTION
Standby
READ: WORD
READ: LOWER BYTE
READ: UPPER BYTE
WRITE: WORD
(EARLY WRITE)
WRITE: LOWER
BYTE (EARLY)
WRITE: UPPER
BYTE (EARLY)
READ WRITE
EDO-PAGE-MODE 1st Cycle
READ
2nd Cycle
Any Cycle
EDO-PAGE-MODE 1st Cycle
WRITE
READ-WRITE
HIDDEN
REFRESH
CBR REFRESH
NOTE:
2nd Cycle
2nd Cycle
READ
WRITE
EDO-PAGE-MODE 1st Cycle
?
R
?
A
/
S
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L>H>L
L>H>L
L
H>L
?
C
?
A
/
S
/
L
H>X
L
L
H
L
L
H
L
H>L
H>L
L>H
H>L
H>L
H>L
H>L
L
L
H
L
?
C
?
A
/
S
/
H
H>X
L
H
L
L
H
L
L
H>L
H>L
L>H
H>L
H>L
H>L
H>L
L
L
H
L
?
W
/
E
X
H
H
H
L
L
L
H>L
H
H
H
L
L
H>L
H>L
H
L
X
H
?
O
/
E
X
L
L
L
X
X
X
L>H
L
L
L
X
X
L>H
L>H
L
X
X
X
t
R
t
C
DQs
High-Z
Data-Out
Lower Byte,
Upper Byte, Data-Out
Lower Byte, Data-Out
Upper Byte
Data-In
Lower Byte, Data-In
Upper Byte, High-Z
Lower Byte, High-Z
Upper Byte, Data-In
Data-Out, Data-In
Data-Out
Data-Out
Data-Out
Data-In
Data-In
Data-Out, Data-In
Data-Out, Data-In
Data-Out
Data-In
High-Z
High-Z
NOTES
X
ROW
ROW
ROW
ROW
ROW
ROW
ROW
ROW
n/a
n/a
ROW
n/a
ROW
n/a
ROW
ROW
ROW
X
X
COL
COL
COL
COL
COL
COL
COL
COL
COL
n/a
COL
COL
COL
COL
COL
COL
n/a
X
1, 2
2
2
2
1
1
1, 2
1, 2
2
1, 3
4
?
R
?
A
/
S-ONLY REFRESH
1. These WRITE cycles may also be BYTE WRITE cycles (either
?
C
?
A
/
S
/
L or
?
C
?
A
/
S
/
H active).
2. These READ cycles may also be BYTE READ cycles (either
?
C
?
A
/
S
/
L or
?
C
?
A
/
S
/
H active).
3. EARLY WRITE only.
4. Only one
?
C
?
A
/
S must be active (?C
?
A
/
S
/
L or
?
C
?
A
/
S
/
H).
AS4LC1M16
REV. 3/97
DS000020
2-98
Austin Semiconductor, Inc., reserves the right to change products or specifications without notice.
AUSTIN [ AUSTIN SEMICONDUCTOR ]
