參數(shù)資料
型號(hào): M27C257
廠商: 意法半導(dǎo)體
英文描述: ADDRESS LATCHED 256K (32K x 8) UV EPROM and OTP EPROM
中文描述: 地址鎖存256K(32K的× 8)紫外線存儲(chǔ)器和OTP存儲(chǔ)器
文件頁(yè)數(shù): 5/13頁(yè)
文件大?。?/td> 143K
代理商: M27C257
Symbol
Parameter
Test Condition
Min
Max
Unit
I
LI
Input Leakage Current
0V
V
IN
V
CC
±
10
μ
A
I
LO
Output Leakage Current
0V
V
OUT
V
CC
±
10
μ
A
I
CC
Supply Current
E = V
IL
, G = V
IL
,
I
OUT
= 0mA, f = 5MHz
30
mA
I
CC1
Supply Current
(Standby) TTL
E = V
IH
, ASV
PP
= V
IH
, Address Switching
10
mA
E = V
IH
, ASV
PP
= V
IL
, Address Stable
1
mA
I
CC2
Supply Current (Standby)
CMOS
E
V
CC
– 0.2V, ASV
PP
V
CC
– 0.2V,
Address Switching
6
mA
E
V
CC
– 0.2V, ASV
PP
= V
SS
,
Address Stable
100
μ
A
I
PP
Program Current
V
PP
= V
CC
100
μ
A
V
IL
Input Low Voltage
–0.3
0.8
V
V
IH
(2)
Input High Voltage
2
V
CC
+ 1
V
V
OL
Output Low Voltage
I
OL
= 2.1mA
0.4
V
V
OH
Output High Voltage
I
OH
= –1mA
V
CC
– 0.8V
V
Notes:
1. V
must be applied simultaneously with or before V
PP
and removed simultaneously or after V
PP
.
2. Maximum DC voltage on Output is V
CC
+0.5V.
Table 7. Read Mode DC Characteristics
(1)
(T
A
= 0 to 70
°
C, –40 to 85
°
C, –40 to 105
°
C or –40 to 125
°
C; V
CC
= 5V
±
5% or 5V
±
10%; V
PP
= V
CC
)
Symbol
Alt
Parameter
Test
Condition
M87C257
-60
Unit
-45
(3)
Min Max Min Max Min Max Min Max
-70
-80
t
AVQV
t
ACC
Address Valid to
Output Valid
Address Valid to
Address Strobe Low
Address Strobe High
to Address Strobe Low
Address Strobe Low to
Address Transition
Address Strobe Low to
Output Enable Low
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
45
60
70
80
ns
t
AVASL
t
AL
7
7
7
7
ns
t
ASHASL
t
LL
35
35
35
35
ns
t
ASLAX
t
LA
20
20
20
20
ns
t
ASLGL
t
LOE
20
20
20
20
ns
t
ELQV
t
CE
G = V
IL
45
60
70
80
ns
t
GLQV
t
OE
E = V
IL
25
30
35
40
ns
t
EHQZ
(2)
t
DF
G = V
IL
0
25
0
30
0
30
0
40
ns
t
GHQZ
(2)
t
DF
E = V
IL
0
25
0
30
0
30
0
40
ns
t
AXQX
t
OH
E = V
IL
,
G = V
IL
0
0
0
0
ns
Notes:
1. V
must be applied simultaneously with or before V
PP
and removed simultaneously or after V
PP
.
2. Sampled only, not 100% tested.
3. In case of 45ns speed see High Speed AC measurement conditions.
Table 8A. Read Mode AC Characteristics
(1)
(T
A
= 0 to 70
°
C, –40 to 85
°
C, –40 to 105
°
C or –40 to 125
°
C; V
CC
= 5V
±
5% or 5V
±
10%; V
PP
= V
CC
)
5/13
M87C257
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