mc68hc908jb16 Freescale Semiconductor, Inc, mc68hc908jb16 Datasheet - Page 304

• Manufacturer Part Number: mc68hc908jb16
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Low-Voltage Inhibit (LVI)
18.4 Functional Description
18.4.1 Low V
Technical Data
304
DD
Detector
Figure 18-1
out of reset. The LVI module contains independent bandgap reference
circuit and comparator for monitoring the V
voltage. An LVI reset performs a MCU internal reset and drives the RST
pin low to provide low-voltage protection to external peripheral devices.
The low V
reset when the V
in the configuration register (CONFIG) selects the trip point voltage. The
V
See
interaction between the SIM and the LVI.
DD
DETECTOR
DETECTOR
LOW V
LOW V
LVI5OR3
8.4.2.5 Low-Voltage Inhibit (LVI) Reset
LVI circuit can be disabled by the setting the LVID bit in CONFIG.
V
V
DD
REG
REG
DD
DD
shows the structure of the LVI module. The LVI is enabled
detector circuit monitors the V
Low-Voltage Inhibit (LVI)
V
V
V
V
Figure 18-1. LVI Module Block Diagram
DD
DD
DD
DD
DD
> V
< V
> V
< V
LVR
LVR
LVRR
LVRR
voltage falls below the trip voltage. The LVI5OR3 bit
= 0
= 1
= 0
= 1
LVIDR
LVID
DD
DD
voltage and the V
for details of the
voltage and forces a LVI
MC68HC908JB16
Freescale Semiconductor
LVI RESET
—
REG
Rev. 1.1