AS4LC4M4 883C
4 MEG x 4 DRAM
AUSTIN SEMICONDUCTOR, INC.
HIDDEN REFRESH CYCLE 24
(WE = HIGH; OE = LOW)
t
t
t
RAS
RAS
RP
V
V
IH
IL
RAS
CAS
t
t
t
RSH
CRP
RCD
t
CHR
V
V
IH
IL
t
AR
t
t
RAL
RAD
t
t
t
t
CAH
ASR
RAH
ASC
V
V
IH
IL
ADDR
ROW
COLUMN
t
AA
t
RAC
t
t
OFF
CAC
t
CLZ
V
V
OH
OL
DQ
OE
OPEN
VALID DATA
OPEN
t
t
OE
OD
t
ORD
V
V
IH
IL
DON’T CARE
UNDEFINED
TIMING PARAMETERS
-6
-7
-8
-6
-7
-8
SYM
tAA
tAR
MIN
MAX
MIN
MAX
MIN
MAX UNITS
SYM
MIN
0
MAX
MIN
0
MAX
MIN
0
MAX UNITS
tOFF
tORD
tRAC
tRAD
tRAH
tRAL
tRAS
tRCD
tRP
15
15
20
ns
ns
ns
ns
ns
ns
30
35
40
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
45
0
55
0
60
0
0
0
0
tASC
tASR
tCAC
tCAH
tCHR
tCLZ
tCRP
tOD
60
30
70
35
80
40
0
0
0
15
10
30
60
16
40
13
15
10
35
15
10
40
15
20
20
10
10
0
15
15
0
15
15
0
10,000 70 10,000 80
10,000 ns
45
16
50
15
50
20
60
15
60
ns
ns
ns
5
5
5
tRSH
0
15
15
0
15
20
0
20
20
tOE
AS4LC4M4
Rev. 11/97
DS000022
Austin Semiconductor, Inc., reserves the right to change products or specifications without notice.
2-90
AUSTIN [ AUSTIN SEMICONDUCTOR ]
