mc908jl16 Freescale Semiconductor, Inc, mc908jl16 Datasheet - Page 165

• Manufacturer Part Number: mc908jl16
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Chapter 14
Low-Voltage Inhibit (LVI)
14.1 Introduction
This section describes the low-voltage inhibit module (LVI), which monitors the voltage on the V
and generates a reset when the V
14.2 Features
Features of the LVI module include the following:
14.3 Functional Description
Figure 14-1
contains a bandgap reference circuit and comparator. Setting LVI disable bit (LVID) disables the LVI to
monitor V
LVI module should take actions.
The LVI module generates one output signal:
LVI Reset — an reset signal will be generated to reset the CPU when V
point.
Freescale Semiconductor
•
•
Selectable LVI trip voltage
Selectable LVI circuit disable
DD
shows the structure of the LVI module. The LVI is enabled after a reset. The LVI module
voltage. The LVI trip voltage selection bits (LVIT1, LVIT0) determine at which V
LVIT1
DETECTOR
LOW V
V
DD
DD
LVIT0
V
V
Figure 14-1. LVI Module Block Diagram
DD
DD
> LVI
< LVI
DD
MC68HC908JL16 Data Sheet, Rev. 1.1
TRIP
TRIP
voltage falls to the LVI trip (LVI
= 0
= 1
LVID
TRIP
DD
) voltage.
drops to below the set trip
LVI RESET
DD
level the
DD
pin
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