M27C512
Table 9.
Read mode AC characteristics
DC and AC parameters
M27C512
Symbol
Alt
Parameter
Test Condition
(1)
-45
(2)
Min
t
AVQV
t
ELQV
t
GLQV
t
EHQZ(3)
t
GHQZ(3)
t
AXQX
t
ACC
t
CE
t
OE
t
DF
t
DF
t
OH
Address Valid to Output
Valid
Chip Enable Low to
Output Valid
Output Enable Low to
Output Valid
Chip Enable High to
Output Hi-Z
Output Enable High to
Output Hi-Z
Address Transition to
Output Transition
E = V
IL
, G = V
IL
G = V
IL
E = V
IL
G = V
IL
E = V
IL
E = V
IL
, G = V
IL
0
0
0
Max
45
45
25
25
25
0
0
0
Min
-70
Max
70
70
35
30
30
ns
ns
ns
ns
ns
ns
Unit
1. V
CC
must be applied simultaneously with or before V
PP
and removed simultaneously or after V
PP
.
2. Speed obtained with High Speed AC measurement conditions.
3. Sampled only, not 100% tested.
Table 10.
Read mode AC characteristics
M27C512
Symbol
Alt
Parameter
Test Condition
(1)
-90
-10
-12
-15
Unit
Min Max Min Max Min Max Min Max
t
AVQV
t
ELQV
t
GLQV
t
EHQZ (2)
t
GHQZ(2)
t
ACC
t
CE
t
OE
t
DF
Address Valid to
Output Valid
Chip Enable Low
to Output Valid
Output Enable Low
to Output Valid
Chip Enable High
to Output Hi-Z
Output Enable
High to Output Hi-
Z
Address Transition
to Output
Transition
E = V
IL
, G = V
IL
G = V
IL
E = V
IL
G = V
IL
0
90
90
40
30
0
100
100
40
30
0
120
120
50
40
0
150
150
60
50
ns
ns
ns
ns
t
DF
E = V
IL
0
30
0
30
0
40
0
50
ns
t
AXQX
t
OH
E = V
IL
, G = V
IL
0
0
0
0
ns
1. V
CC
must be applied simultaneously with or before V
PP
and removed simultaneously or after V
PP
.
2. Sampled only, not 100% tested.
13/22
STMICROELECTRONICS [ STMICROELECTRONICS ]
