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M27V801
Standby Mode
The M27V801 hasa standby mode which reduces
the activecurrent from15mAto 20
μ
A with lowvolt-
age operation V
CC
≤
3.6V, see Read Mode DC
Characteristics table for details.The M27V801 is
placed in the standby mode by applying a CMOS
high signal to the E input. When in the standby
mode, the outputs are in a high impedance state,
independent of the GV
PP
input.
Two Line Output Control
Because EPROMs are usually used in larger
memory arrays, the product features a 2 line con-
trol function which accommodates the use of mul-
tiple memory connection.
The two line control function allows:
a. the lowest possible memory power dissipation,
b. complete assurance that output bus contention
will not occur.
For the most efficient use of these two control
lines, Eshould be decoded and used as theprima-
ry device selecting function, while G should be
made a common connection to all devices in the
array and connected to the READ line from the
system control bus. Thisensures that all deselect-
ed memory devices are in their lowpower standby
mode and that the output pins are only active
when data is required from a particular memory
device.
Table 2. Absolute Maximum Ratings
(1)
Note: 1. Except for the rating ”O(jiān)perating 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. Referalso to the STMicroelectronics SUREProgram andother 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
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
GV
PP
A9
Q0-Q7
Read
V
IL
V
IL
X
Data Out
Output Disable
V
IL
V
IH
X
Hi-Z
Program
V
IL
Pulse
V
PP
X
Data In
Program Inhibit
V
IH
V
PP
X
Hi-Z
Standby
V
IH
X
X
Hi-Z
Electronic Signature
V
IL
V
IL
V
ID
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
0
1
0
42h