AUSTIN SEMICONDUCTOR, INC.
AS4LC1M16 883C
1 MEG x 16 DRAM
PRELIMINARY
ELECTRICAL CHARACTERISTICS AND RECOMMENDED AC OPERATING CONDITIONS
(Notes: 2, 3, 6, 9, 10, 11, 12, 20) (V
CC
= +3.3V
±0.3V)
AC CHARACTERISTICS
PARAMETER
?
O
/
E LOW to
?
C
?
A
/
S HIGH setup time
Output buffer turn-off delay
OE setup prior to RAS during HIDDEN REFRESH cycle
? /
? ? /
EDO-PAGE-MODE READ or WRITE cycle time
EDO-PAGE-MODE READ-WRITE cycle time
Access time from
?
R
?
A
/
S
?
R
?
A
/
S to column-address delay time
Row-address hold time
Column-address to
?
R
?
A
/
S lead time
?
R
?
A
/
S pulse width
?
R
?
A
/
S pulse width (EDO PAGE MODE)
Random READ or WRITE cycle time
?
R
?
A
/
S to
?
C
?
A
/
S delay time
Read command hold time (referenced to
?
C
?
A
/
S)
Read command setup time
Refresh period (1,024 cycles)
?
R
?
A
/
S precharge time
?
R
?
A
/
S to
?
C
?
A
/
S precharge time
Read command hold time (referenced to
?
R
?
A
/
S)
?
R
?
A
/
S hold time
READ WRITE cycle time
?
R
?
A
/
S to
?
W
/
E delay time
Write command to
?
R
?
A
/
S lead time
Transition time (rise or fall)
Write command hold time
Write command hold time (referenced to
?
R
?
A
/
S)
?
W
/
E command setup time
Output disable delay from
?
W
/
E
Write command pulse width
?
W
/
E pulse width to disable at
?
C
?
A
/
S HIGH
?
W
/
E hold time (CBR REFRESH)
?
W
/
E setup time (CBR REFRESH)
-6
SYM
t
OES
t
OFF
t
ORD
t
PC
t
PRWC
t
RAC
t
RAD
t
RAH
t
RAL
t
RAS
t
RASP
t
RC
t
RCD
t
RCH
t
RCS
t
REF
t
RP
t
RPC
t
RRH
t
RSH
t
RWC
t
RWD
t
RWL
t
T
t
WCH
t
WCR
t
WCS
t
WHZ
t
WP
t
WPZ
t
WRH
t
WRP
MIN
5
0
0
30
75
12
10
30
60
60
110
14
0
0
40
5
0
13
150
80
15
2
10
45
0
0
10
10
10
10
MAX
15
MIN
5
0
0
35
85
12
10
35
70
70
130
14
0
0
50
5
0
15
180
90
18
2
12
55
0
0
12
12
10
10
-7
MAX
15
MIN
10
0
0
40
90
15
10
40
80
80
150
16
0
0
60
5
0
20
200
105
20
2
15
60
0
0
15
15
10
10
-8
UNITS
ns
20
ns
ns
ns
ns
80
ns
40
ns
ns
ns
10,000
ns
100,000
ns
ns
60
ns
ns
ns
16
ms
ns
ns
ns
ns
ns
ns
ns
50
ns
ns
ns
ns
20
ns
ns
ns
ns
ns
MAX
NOTES
20, 26
31
31
19
21
60
30
70
35
10,000
100,000
45
10,000
100,000
50
22, 25
23, 28
25
16
16
23
32
13
50
50
32
13, 25
13
15
AS4LC1M16
REV. 3/97
DS000020
2-101
Austin Semiconductor, Inc., reserves the right to change products or specifications without notice.
AUSTIN [ AUSTIN SEMICONDUCTOR ]
