ST7265XEVALMS STMicroelectronics, ST7265XEVALMS Datasheet - Page 31

• Manufacturer Part Number: ST7265XEVALMS
• Manufacturer: STMicroelectronics

Specifications of ST7265XEVALMS

• Lead Free Status / Rohs Status: Supplier Unconfirmed

6.3 LOW VOLTAGE DETECTOR (LVD)
To allow the integration of power management
features in the application, the Low Voltage Detec-
tor function (LVD) generates a static reset when
the V
value. This means that it secures the power-up as
well as the power-down, keeping the ST7 in reset.
The V
than the V
to avoid a parasitic reset when the MCU starts run-
ning and sinks current on the supply (hysteresis).
Figure 21. Low Voltage Detector vs Reset
RESET
V
V
IT-(LVD)
DDA
IT+(LVD)
IT-
reference value for a voltage drop is lower
supply voltage is below a V
IT+
reference value for power-on in order
V
DDA
IT-
reference
The LVD Reset circuitry generates a reset when
V
The LVD function is illustrated in
During a Low Voltage Detector Reset, the RESET
pin is held low, thus permitting the MCU to reset
other devices.
Note: It is recommended to make sure that the
V
device is exiting from Reset, to ensure the applica-
tion functions properly.
V
DDA
DDA
hyst
– V
– V
supply voltage rises monotonously when the
is below:
IT+
IT-
when V
when V
DDA
DDA
is falling
is rising
Figure
ST7265x
21.
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