MC68HC908QY2 MOTOROLA [Motorola, Inc], MC68HC908QY2 Datasheet - Page 198

• Manufacturer Part Number: MC68HC908QY2
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Low-Voltage Inhibit (LVI)
16.4.2 Forced Reset Operation
16.4.3 Voltage Hysteresis Protection
16.4.4 LVI Trip Selection
198
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NOTE:
In applications that require V
enabling LVI resets allows the LVI module to reset the MCU when V
falls below the V
and LVIRSTD bits must be at logic 0 to enable the LVI module and to
enable LVI resets.
Once the LVI has triggered (by having V
will maintain a reset condition until V
voltage, V
continually entering and exiting reset if V
V
The LVI5OR3 bit in the configuration register selects whether the LVI is
configured for 5-V or 3-V protection.
The microcontroller is guaranteed to operate at a minimum supply
voltage. The trip point (V
this. See
18.9 3-V DC Electrical Characteristics
TRIPF
. V
18.6 5-V DC Electrical Characteristics
TRIPR
TRIPR
Low-Voltage Inhibit (LVI)
. This prevents a condition in which the MCU is
is greater than V
TRIPF
level. In the configuration register, the LVIPWRD
TRIPF
DD
[5 V] or V
to remain above the V
TRIPF
DD
by the hysteresis voltage, V
rises above the rising trip point
TRIPF
for the actual trip point voltages.
DD
DD
fall below V
is approximately equal to
[3 V]) may be lower than
and
TRIPF
TRIPF
level,
), the LVI
MOTOROLA
HYS
DD
.