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參數(shù)資料
| 型號： | M27C4002-70F6X |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 4 Mbit (256Kb x16) UV EPROM and OTP EPROM |
| 中文描述： | 4兆位（256Kb的× 16）紫外線存儲器和OTP存儲器 |
| 文件頁數(shù)： | 3/18頁 |
| 文件大?。?/td> | 184K |
| 代理商： | M27C4002-70F6X |
3/18
M27C4002
Table 2. Absolute Maximum Ratings
(1)
Note: 1. Except for the rating "Operating Temperature Range", stresses above those listed in the Table "Absolute Maximum Ratings" may
cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions
above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating condi-
tions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant qual-
ity documents.
2. Minimum DC voltage on Input or Output is –0.5V with possible undershoot to –2.0V for a period less than 20ns. Maximum DC
voltage on Output is V
CC
+0.5V with possible overshoot to V
CC
+2V for a period less than 20ns.
3. Depends on range.
Table 3. Operating Modes
Note: X = V
IH
or V
IL
, V
ID
= 12V ± 0.5V.
Table 4. Electronic Signature
Note: Outputs Q15-Q8 are set to '0'.
Symbol
Parameter
Value
Unit
T
A
Ambient Operating Temperature
(3)
–40 to 125
°C
T
BIAS
Temperature Under Bias
–50 to 125
°C
T
STG
Storage Temperature
–65 to 150
°C
V
IO(2)
Input or Output Voltage (except A9)
–2 to 7
V
V
CC
Supply Voltage
–2 to 7
V
V
A9(2)
A9 Voltage
–2 to 13.5
V
V
PP
Program Supply Voltage
–2 to 14
V
Mode
E
G
A9
V
PP
Q15-Q0
Read
V
IL
V
IL
X
V
CC
or V
SS
Data Out
Output Disable
V
IL
V
IH
X
V
CC
or V
SS
Hi-Z
Program
V
IL
Pulse
V
IH
X
V
PP
Data In
Verify
V
IH
V
IL
X
V
PP
Data Out
Program Inhibit
V
IH
V
IH
X
V
PP
Hi-Z
Standby
V
IH
X
X
V
CC
or V
SS
Hi-Z
Electronic Signature
V
IL
V
IL
V
ID
V
CC
Codes
Identifier
A0
Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0
Hex Data
Manufacturer’s Code
V
IL
0
0
1
0
0
0
0
0
20h
Device Code
V
IH
0
1
0
0
0
1
0
0
44h
DEVICE OPERATION
The operating modes of the M27C4002 are listed
in the Operating Modes table. A single power sup-
ply is required in the read mode. All inputs are TTL
levels except for V
PP
and 12V on A9 for Electronic
Signature.
Read Mode
The M27C4002 has two control functions, both of
which must be logically active in order to obtain
data at the outputs. Chip Enable (E) is the power
control and should be used for device selection.
Output Enable (G) is the output control and should
be used to gate data to the output pins, indepen-
dent of device selection. Assuming that the ad-
dresses are stable, the address access time
(t
AVQV
) is equal to the delay from E to output
(t
ELQV
). Data is available at the output after a delay
of t
GLQV
from the falling edge of G, assuming that
E has been low and the addresses have been sta-
ble for at least t
AVQV
-t
GLQV
.
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