DV164136 Microchip Technology, DV164136 Datasheet - Page 296
![DEVELOPMENT KIT FOR PIC18](/photos/9/21/92129/dv164136_sml.jpg)
DV164136
Manufacturer Part Number
DV164136
Description
DEVELOPMENT KIT FOR PIC18
Manufacturer
Microchip Technology
Series
PIC®r
Type
MCUr
Datasheets
1.DM183032.pdf
(38 pages)
2.DV164136.pdf
(448 pages)
3.DV164136.pdf
(6 pages)
4.DV164136.pdf
(446 pages)
5.DV164136.pdf
(4 pages)
6.DV164136.pdf
(18 pages)
Specifications of DV164136
Contents
Board, Cables, CDs, PICkit™ 3 Programmer, Power Supply
Processor To Be Evaluated
PIC18F8722, PIC18F87J11
Interface Type
RS-232, USB
Operating Supply Voltage
3.3 V, 5 V
Silicon Manufacturer
Microchip
Core Architecture
PIC
Core Sub-architecture
PIC18
Silicon Core Number
PIC18F
Silicon Family Name
PIC18F8xxx
Kit Contents
PIC18 Exp Brd PICkit 3 Cable CD PSU
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
PIC18F8722, PIC18F87J11
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DV164136
Manufacturer:
MICROCHIP
Quantity:
12 000
- DM183032 PDF datasheet
- DV164136 PDF datasheet #2
- DV164136 PDF datasheet #3
- DV164136 PDF datasheet #4
- DV164136 PDF datasheet #5
- DV164136 PDF datasheet #6
- Current page: 296 of 446
- Download datasheet (7Mb)
PIC18F8722 FAMILY
FIGURE 24-3:
24.5
In many applications, the ability to detect a drop below
or rise above a particular threshold is desirable. For
example, the HLVD module could be periodically
enabled to detect Universal Serial Bus (USB) attach or
detach. This assumes the device is powered by a lower
voltage source than the USB when detached. An attach
would indicate a high-voltage detect from, for example,
3.3V to 5V (the voltage on USB) and vice versa for a
detach. This feature could save a design a few extra
components and an attach signal (input pin).
For general battery applications, Figure 24-4 shows a
possible voltage curve. Over time, the device voltage
decreases. When the device voltage reaches voltage
V
The interrupt could cause the execution of an ISR,
which would allow the application to perform “house-
keeping tasks” and perform a controlled shutdown
before the device voltage exits the valid operating
range at T
tion a time window, represented by the difference
between T
DS39646C-page 294
A
, the HLVD logic generates an interrupt at time T
CASE 1:
CASE 2:
Enable HLVD
Enable HLVD
Applications
A
B
. The HLVD, thus, would give the applica-
and T
HLVDIF
HLVDIF
IRVST
IRVST
V
V
B
DD
DD
, to safely exit.
HIGH-VOLTAGE DETECT OPERATION (VDIRMAG =
HLVDIF may not be set
Internal Reference is stable
Internal Reference is stable
T
T
IRVST
IRVST
A
.
HLVDIF cleared in software,
HLVDIF remains set since HLVD condition still exists
FIGURE 24-4:
V
V
A
B
Legend:
HLVDIF cleared in software
V
V
A
B
1
= HLVD trip point
= Minimum valid device
)
TYPICAL LOW-VOLTAGE
DETECT APPLICATION
© 2008 Microchip Technology Inc.
operating voltage
Time
HLVDIF cleared in software
T
A
V
V
HLVD
HLVD
T
B
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