Datasheet

 2012-2013 Microchip Technology Inc. DS30009312B-page 397
PIC24FJ128GC010 FAMILY
33.0 HIGH/LOW-VOLTAGE DETECT
(HLVD)
The High/Low-Voltage Detect (HLVD) module is a
programmable circuit that allows the user to specify
both the device voltage trip point and the direction of
change.
An interrupt flag is set if the device experiences an
excursion past the trip point in the direction of change.
If the interrupt is enabled, the program execution will
branch to the interrupt vector address and the software
can then respond to the interrupt.
The HLVD Control register (see Register 33-1)
completely controls the operation of the HLVD module.
This allows the circuitry to be “turned off” by the user
under software control, which minimizes the current
consumption for the device.
FIGURE 33-1: HIGH/LOW-VOLTAGE DETECT (HLVD) MODULE BLOCK DIAGRAM
Note: This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information on the
High/Low-Voltage Detect, refer to the
“PIC24F Family Reference Manual”,
“High-Level Integration with
Programmable High/Low-Voltage Detect
(HLVD)” (DS39725).
Set
VDD
16-to-1 MUX
HLVDEN
HLVDL<3:0>
HLVDIN
V
DD
Externally Generated
Trip Point
HLVDIF
HLVDEN
Internal Voltage
Reference
VDIR
1.20V Typical