MA180023 Microchip Technology, MA180023 Datasheet - Page 371

• Manufacturer Part Number: MA180023
• Description: MODULE PLUG-IN PIC18F46J11 PIM
• Manufacturer: Microchip Technology
• Series: PIC®r

Specifications of MA180023

• Accessory Type: Plug-In Module (PIM) - PIC18F46J11
• Tool / Board Applications: General Purpose MCU, MPU, DSP, DSC
• Mcu Supported Families: PIC18
• Supported Devices: Stand-alone Or W/ HPC(DM183022) Or PIC18(DM183032)
• Silicon Manufacturer: Microchip
• Core Architecture: PIC
• Core Sub-architecture: PIC18
• Silicon Core Number: PIC18F
• Silicon Family Name: PIC18FxxJxx
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: HPC Explorer Board (DM183022) or PIC18 Explorer Board (DM183032)
• For Use With: DM183032 - BOARD EXPLORER PICDEM PIC18DM183022 - BOARD DEMO PIC18FXX22 64/80TQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FIGURE 23-3:
23.5
In many applications, it is desirable to have the ability to
detect a drop below, or rise above, a particular threshold.
For general battery applications, Figure 23-4 provides a
possible voltage curve.
Over time, the device voltage decreases. When the
device voltage reaches voltage, V
generates an interrupt at time, T
cause the execution of an ISR, which would allow the
application to perform “housekeeping tasks” and
perform a controlled shutdown before the device
voltage exits the valid operating range at T
The HLVD, thus, would give the application a time
window, represented by the difference between T
T
© 2009 Microchip Technology Inc.
B
, to safely exit.
CASE 1:
CASE 2:
Enable HLVD
Enable HLVD
Applications
IRVST
LVDIF
IRVST
LVDIF
V
V
DD
DD
HIGH-VOLTAGE DETECT OPERATION (VDIRMAG =
LVDIF may not be set
Internal Reference is stable
A
. The interrupt could
A
, the HLVD logic
B
.
A
Internal Reference is stable
and
T
T
IRVST
IRVST
PIC18F46J11 FAMILY
LVDIF cleared in software,
LVDIF remains set since HLVD condition still exists
FIGURE 23-4:
V
V
A
B
Legend:
LVDIF cleared in software
V
V
1
A
B
)
= HLVD trip point
= Minimum valid device
TYPICAL HIGH/
LOW-VOLTAGE DETECT
APPLICATION
operating voltage
Time
LVDIF cleared in software
T
A
V
V
DS39932C-page 371
HLVD
HLVD
T
B