stm1068 STMicroelectronics, stm1068 Datasheet - Page 8

• Manufacturer Part Number: stm1068
• Description: Smart Voltage Supervisor
• Manufacturer: STMicroelectronics

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2.2
2.3
2.4
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Operation
The STM1068 device monitors supply voltage V
According to detected states is the output OUT connected to V
between PKX and POX is either enabled or disabled (see
for more details).
Output, OUT
If the enable input is in a logic high state and inhibit input is in a logic low state, the output
will be connected to V
output is connected to ground GND. The output is current limited (see
Enable input, EN
A logic low on the enable input disconnects the output, OUT, from V
the PKX and the device enters a standby mode with very low current consumption (see
Table
Inhibit input, INH
A logic high on the inhibit input disconnects the output, OUT, from V
follow the PKX.
Pass gate, PKX and POX
Pass gate between PKX and POX is disabled only if enable input is in logic high, inhibit input
is in logic low and the supply voltage is below the voltage threshold.
Table 2.
1. Once the device is disabled by EN input, the V
EN
6).
H
L
x
x
(1)
Truth table for output, OUT
IN
INH
H
x
x
L
input as V
CC
rises above the V
<V
>V
<V
>V
CC
TH+
TH-
TH+
TH-
must be above V
(falling edge)
(falling edge)
(rising edge)
(rising edge)
V
x
x
CC
CC
and logic states of EN and INH inputs.
TH+
TH+
Table
voltage threshold. Otherwise, the
to reconnect output to V
IN
2,
or GND and the pass gate
Table 3
IN
IN
connected to GND
connected to GND
connected to GND
, the POX will follow
connected to V
and the POX will
Table
, and
OUT
6).
IN
Figure 11
.
IN