STM6700 STMicroelectronics, STM6700 Datasheet - Page 9

• Manufacturer Part Number: STM6700
• Description: (STM6700 / STM6710) Microprocessor Supervisors And Reset ICs
• Manufacturer: STMicroelectronics

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STM6700, STM6710
2
2.1
Operation
The STM6710 is capable of monitoring up to 4 voltages in a multi-supply application. The
device is available in several pre-set voltage thresholds for power supplies of 1.8 V, 2.5 V,
3.0 V, 3.3 V and 5.0 V. The STM6710 is powered by the V2IN pin which is also a monitored
voltage, thus making this a quad voltage monitor. The STM6710Q and STM6700 use this
pin as V
voltage inputs. If any of the monitored input voltage falls below its associated threshold, the
active-low reset output is asserted and remains low as long as V1IN or V2IN remains above
1.0 V.
Figure 4.
RESET output configuration
The RESET output asserts low if a monitored input voltage drops below its threshold. This is
an open-drain with a weak internal pull-up to V2IN or the V
However, many applications may not require an external pull-up resistor. In case a pull-up
resistor is required and is connected to a voltage ranging from 0 V to 5.5 V (as shown in
Figure 5
circuitry to prevent this reverse current flow to V2IN under this condition.
Figure 5.
CC
below), it can overdrive the weak internal pull-up. The STM6710 has built-in
which is not monitored and thereby limits these devices to three adjustable
Hardware hookup (typical application diagram)
Interface to external pull-up using a different supply voltage
MONITORED
SUPPLIES
TO BE
Doc ID 16887 Rev 1
V2IN = 3.3V
STM6710
RESET
V1IN
V2IN (V
V3IN
V4IN
STM6710
100kΩ
GND
CC
RESET
)
RESET
V CC
5V
CC
supply, and is typically 10 µA.
µP
Operation
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