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Table of Contents
Task
Manager
Tips
for Signal Generation and Decoding,
by Jennifer Huber
Priority
Interrupt
Pond
Scum,
by Steve Ciarcia
New
Product News,
edited by John Gorsky
—Feature
Article —
Signal
Generation Solution
Build an
Inexpensive RF Signal Generator
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Read
it now!
by Neal
Martini
Tired
of going to a local university lab to use
a signal generator, Neal designed his own.
In this article he explains how he built the
PIC16F877A-based controller and RF module.
p. 12
Keywords:
RF, signal generator,
VSWR, impedance matching, mixer, SYM-25DLHW,
POS-2000A, UPB1507, PIC16F877A, PICDEM 2 Plus,
MCP4922, AD8367
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Digital
Decoding Simplified: Sequential Exact Frequency
Goertzel Algorithm
Eric
Kiser
Using
dedicated tone decoder hardware or digital signal
processors to decode signals can cost a lot of money
and take up precious space. Eric’s algorithm is
a great alternative. p.22
Keywords:
Tone decoding, Goertzel algorithm, Fourier, frequency,
sample rate, PIC16F876A, PCW C compiler
(If you have pop-ups disabled, click
here for a password.)
High-Performance
Square Wave Source: Build a Digitally Controlled
Signal Generator
Gordon
Dick
Wouldn’t
it be nice to have more than one square wave source
on your workbench? Gordon built a digitally controlled
signal generator around a PIC16F876 microcontroller
and Linear Technology’s LTC6903/6904 oscillator.
It’s a fairly simple, inexpensive project. p.
32
Keywords:
Signal
generator, square wave, PIC16F876, LTC6903, range,
PicBasic Pro, SPI
(If you have pop-ups disabled, click
here for a password.)
Strong
Encryption for PICs (Part 2): Prototype Application
Romeo
Costanzo
Now
that you know how to use the Triple-DES encryption
algorithm with PIC MCUs, it’s time to learn how
to use it to create a one-time password generator
for an electric lock. p. 38
Keywords:
Encryption,
PIC, Triple-DES, TDES, TDEA, Manchester encoding,
protocol, data structure, synchronization, RF, SAW
transmitter, RT6-433, PIC12CE519, BC-NBK, PIC16F628,
Java, JCE
(If you have pop-ups disabled, click
here for a password.)
Hardware
Synthesis with VHDL (Part 2): VHDL
in Action
Michael
Griebling
Ready
to put VHDL in play? Michael shows you how to build
state machines, decoders, multiplexers, debounce
and edge detection circuits, tristate bus buffers,
shift registers, and more. p. 48
Keywords:
VHDL, Spartan-3, switch debounce, edge trigger,
display, buffers, shift register, XC3S2000, FPGA
(If you have pop-ups disabled, click
here for a password.)
Replacing
a Legend: Build a Functional Equivalent to the
CDP1861
Bob
Armstrong
Bob
built a functional equivalent to a CDP1861 video
controller chip so he could play video games on
his COSMAC Elf replica. The design includes two
ATF22V10 GALs and a few standard 74HC chips. Ready
to replace some random logic? p. 58
Keywords:
CDP1861 replacement, video controller, ATF22V10,
GAL, COSMAC Elf, timing, CUPL, WinCUPL, programming,
state machines
(If you have pop-ups disabled, click
here for a password.)
Inexpensive
In-Circuit Debugging
Daniel
Malik
Daniel’s
open-source background debug module (BDM) debugging
interface is a great tool for the cost-conscious
designer. It’s perfect for in-circuit debugging
MC68HC(S)12/S12X- and MC68HCS08-based applications.
p. 66
Keywords:
Background debug module, BDM, MC68HCS12, MC68HCS08,
interface, USB, MC68HC908, GCC/GDB, HIWAVE, NoICE
(If you have pop-ups disabled, click
here for a password.)
APPLIED
PCs
Throwing Ethernet Frames
Fred
Eady
You’ve
come to the right place if you’re looking for Ethernet
technology that will enable you to remotely communicate
with your embedded designs. This month Fred introduces
you to the AirDrop-P/Frame Thrower module. p.70
Keywords:
Ethernet, ENC28J60, SPI, RTL8019AS, AX88796L, PIC18LF8621,
AirDrop-P, Frame Thrower
(If you have pop-ups disabled, click
here for a password.)
FROM
THE BENCH
Capacitive Sensing Technology
Jeff Bachiochi
Many exciting products like MP3 players include
circular cursor controllers. In this column Jeff
revisits the topic of capacitive sensing technology,
which he last covered in 1999. He focuses on Quantum’s
new line of capacitive sensor ICs. p.76
Keywords:
Capacitive
sensing, touch sensor, charge transfer, electrode,
QProx, QMatrix, drift compensation, QSlide, QWheel
(If you have pop-ups disabled, click
here for a password.)
SILICON
UPDATE
Batteries Not Included
Tom Cantrell
The cholesteric LCD (ChLCD) is a new breed of LCD
technology. One of its greatest attributes is that
it eats up a lot less power than a traditional LCD.
Read on to determine if it’s the right choice for
your next application. p. 80
Keywords:
Cholesteric
LCD, ChLCD, bistability, speed
(If you have pop-ups disabled, click
here for a password.)
Crossword
Index of Advertisers
PREVIEW
October #183
Analog
Techniques
AVR-Based
Fuel Consumption Gauge
The Silicon Wallet: PSoC-Based
Data Manger
Send and Receive VolP
Maxed-Out PGA
Analog
Bar Display
ABOVE THE GROUND PLANE
LED Optics: Lights! Diodes! Current! Math!
APPLIED PCs Transporting
Sensor Data: In-Depth
Look at the CY3635 WirelessUSB Kit
FROM THE BENCH
Understanding
Semiconductors
SILICON UPDATE
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