S908QC16CDRE FREESCALE [Freescale Semiconductor, Inc], S908QC16CDRE Datasheet - Page 93
S908QC16CDRE
Manufacturer Part Number
S908QC16CDRE
Description
Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.S908QC16CDRE.pdf
(274 pages)
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Chapter 9
Low-Voltage Inhibit (LVI)
9.1 Introduction
The low-voltage inhibit (LVI) module is provided as a system protection mechanism to prevent the MCU
from operating below a certain operating supply voltage level. The module has several configuration
options to allow functionality to be tailored to different system level demands.
The configuration registers (see
control bits for this module.
9.2 Features
Features of the LVI module include:
9.3 Functional Description
Figure 9-1
selectable options found in the configuration register.
Freescale Semiconductor
•
•
•
Programmable LVI reset
Selectable LVI trip voltage
Programmable stop mode operation
shows the structure of the LVI module. LVISTOP, LVIPWRD, LVITRIP, and LVIRSTD are user
FROM CONFIGURATION REGISTER
MC68HC908QC16 • MC68HC908QC8 • MC68HC908QC4 Data Sheet, Rev. 2
DETECTOR
LOW V
LVITRIP
V
DD
DD
FROM CONFIGURATION REGISTER
Figure 9-1. LVI Module Block Diagram
0 IF V
1 IF V
Chapter 4 Configuration Registers (CONFIG1 and
DD
DD
LVIPWRD
> V
≤ V
TRIPR
TRIPF
LVIOUT
FROM CONFIGURATION REGISTER
STOP INSTRUCTION
LVIRSTD
FROM CONFIGURATION REGISTER
LVISTOP
LVI RESET
CONFIG2)) contain
93
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