m2732af6 STMicroelectronics, m2732af6 Datasheet - Page 2

• Manufacturer Part Number: m2732af6
• Description: Nmos 32k 4k X 8 Uv Eprom
• Manufacturer: STMicroelectronics

Table 2. Absolute Maximum Ratings
Note: 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 conditions for extended periods
may affect device reliability. Refer also to the SGS-THOMSON SURE Program and other relevant quality documents.
M2732A
Figure 2. DIP Pin Connections
DEVICE OPERATION
The six modes of operation for the M2732A are
listed in the Operating Modes Table. A single 5V
power supply is required in the read mode. All
inputs are TTL level except for V
Read Mode
The M2732A has two control functions, both of
which must be logically satisfied 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
2/9
Symbol
T
T
V
V
V
T
BIAS
STG
CC
PP
IO
A
V SS
Q0
Q1
Q2
A6
A5
A7
A4
A3
A2
A1
A0
Ambient Operating Temperature
Temperature Under Bias
Storage Temperature
Input or Output Voltages
Supply Voltage
Program Supply Voltage
1
2
3
4
5
6
7
8
9
10
11
12
M2732A
AI00781
24
23
22
21
20
19
18
17
16
15
14
13
PP.
Parameter
V CC
A8
A9
A11
GV PP
A10
E
Q7
Q6
Q5
Q4
Q3
grade 1
grade 6
grade 1
grade 6
be used to gate data to the output pins, inde-
pendent of device selection.
Assuming that the addresses are stable, address
access time (t
output (t
the falling edge of G, assuming that E has been low
and the addresses have been stable for at least
t
Standby Mode
The M2732A has a standby mode which reduces
the active power current by 70 %, from 125 mA to
35 mA. The M2732A is placed in the standby mode
by applying a TTL high signal to E input. When in
standby mode, the outputs are in a high impedance
state, independent of the GV
Two Line Output Control
Because M2732A’s are usually used in larger mem-
ory arrays, this product features a 2 line control
function which accommodates the use of multiple
memory connection. The two line control function
allows:
a. the lowest possible memory power dissipation,
b. complete assurance that output bus contention
To most efficiently use these two control lines, it is
recommended that E be decoded and used as the
primary 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.
This ensures that all deselected memory devices
are in their low power standby mode and that the
output pins are only active when data is required
from a particular memory device.
AVQV
will not occur.
-t
GLQV
ELQV
.
). Data is available at the outputs after
AVAQ
–0.6 to 6
–0.6 to 6
–0.6 to 22
–40 to 85
–10 to 80
–50 to 95
–65 to 125
) is equal to the delay from E to
0 to 70
Value
PP
input.
Unit
V
V
V
C
C
C