ST92E163-EPB/US STMicroelectronics, ST92E163-EPB/US Datasheet - Page 88
ST92E163-EPB/US
Manufacturer Part Number
ST92E163-EPB/US
Description
KIT DEMO MASS STORAGE
Manufacturer
STMicroelectronics
Type
Microcontroller Programmerr
Datasheet
1.ST92E163-EPBUS.pdf
(230 pages)
Specifications of ST92E163-EPB/US
Contents
Programmer, Cable, Power Supply, Software, Manual and more
For Use With/related Products
ST9 MCUs
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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ST92163R4 - RESET AND CLOCK CONTROL UNIT (RCCU)
5.8 LOW VOLTAGE DETECTOR (LVD) RESET
The on-chip Low Voltage Detector (LVD) gener-
ates LVDRESET when the supply voltage drops
below a reference value (brown-out protection).
The reference value for the voltage drop is lower
than the reference value for power-up in order to
avoid a parasitic reset when the MCU starts run-
ning and sinks current on the supply (hysteresis).
The LVD circuitry generates a reset when V
– Above V
– Above V
Figure 47. Low Voltage Detector Reset Function
Figure 48. Low Voltage Detector Reset Signal
Note: Refer to the Electrical Characteristics section for the values of V
88/230
rising
falling
RESET (Ext.)
LVDRESET
LVDMIN
LVDMIN
V
LVDMIN
V
V
V
IT+
DD
V
and below V
and below V
IT-
DD
RESET
(External pin)
V
Undefined
IT+
IT-
Low Voltage
Detector
when V
when V
DD
DD
DD
is
is
is:
LVDRESET
Note: At power on, application must ensure that
the external RESET pin is held low until the V
power supply reaches V
Additionally, if V
RESET signal must be generated externally to re-
start the microcontroller.
The Low Voltage Detector circuitry resets only the
MCU and it does not change the external RESET
pin status: no reset signal for an external applica-
tion is generated.
DD
DD
, V
drops below V
LVDMIN ,
Internal Reset
LVDMIN
V
IT+,
.
LVDMIN
V
V
IT-
HYS
and V
t
, a
HYS
DD
.
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