mc68hc08az60 Freescale Semiconductor, Inc, mc68hc08az60 Datasheet - Page 160

• Manufacturer Part Number: mc68hc08az60
• Description: M68hc08 Family Of 8-bit Microcontroller Units Mcus
• Manufacturer: Freescale Semiconductor, Inc

Low-Voltage Inhibit (L VI)
Introduction
Features
Functional Description
MC68HC08AZ60 — Rev 1.0
160
NOTE:
This section describes the low-voltage inhibit module, which monitors
the voltage on the V
falls to the LVI trip voltage.
Features of the LVI module include:
If a low voltage interrupt (LVI) occurs during programming of EEPROM
memory, then adequate programming time may may not have been
allowed to ensure the integrity and retention of the data. It is the
responsibility of the user to ensure that in the event of an LVI any
addresses being programmed receive specification programming
conditions.
Figure 1
of reset. The LVI module contains a bandgap reference circuit and
comparator. The LVI power bit, LVIPWR, enables the LVI to monitor V
voltage. The LVI reset bit, LVIRST, enables the LVI module to generate
a reset when V
below that level for nine or more consecutive CPU cycles.
Note that short V
responsibility to ensure a clean V
operating voltage range if normal microcontroller operation is to be
guaranteed.
Freescale Semiconductor, Inc.
•
•
•
For More Information On This Product,
Programmable LVI Reset
Programmable Power Consumption
Digital Filtering of V
shows the structure of the LVI module. The LVI is enabled out
Go to: www.freescale.com
Low-Voltage Inhibit (LVI)
DD
DD
falls below a voltage, LVI
DD
spikes may not trip the LVI. It is the user’s
pin and can force a reset when the V
DD
Pin Level
DD
signal within the specified
TRIPF
, and remains at or
DD
MOTOROLA
voltage
DD
2-lvi