1: Introduction
Javelin Stamp Manual v1.1
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www.javelinstamp.com
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Page 1
The Javelin Stamp and Its Features
The Javelin Stamp is a single board computer that’s designed to
function as an easy-to-use programmable brain for electronic products
and projects. As shown in Figure 1.1, it’s about the size and shape of a
commemorative postage stamp. It is programmed using software on a
PC and a subset of Sun Microsystems Java® programming language.
After the program is downloaded to the Javelin, it can run the program
without any further help from the PC. The Javelin can be programmed
and re-programmed up to one million times.
We hope you enjoy working with your new Javelin Stamp as much as
we have while preparing this manual. The Javelin Stamp is somewhat
of a departure from Parallax’s BASIC Stamps. Most notably, the
Javelin is programmed using a subset of the Java programming
language. Some of the other features that set the Javelin apart from
BASIC Stamps are:
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The instruction codes for the Javelin are fetched and executed from a
parallel SRAM instead of a serial EEPROM.
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The Javelin has 32k of RAM/program memory with a flat architecture.
No more program banks, and no more tight squeezes with variable
space.
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The Javelin has built in Virtual Peripherals (VPs) that take care of
serial communication, pulse width modulation and tracking time in the
background.
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Serial communication is buffered as a background process. When
writing programs, all you have to do is periodically check the buffer.
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The Javelin Stamp Integrated Development Environment (Javelin
Stamp IDE) software is a significant departure from a simple Editor
and messages window combination. When used with the Javelin
connected to a PC by a serial cable, this software can be used as a
highly integrated in-circuit debugging system that allows you to run
code, set breakpoints and view variable values, memory usage, I/O pin
states and more. There is also no need for emulators; the Javelin can be
placed directly into the circuit and debugged there.
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Delta-sigma A/D conversion.
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D/A conversion is accomplished in the background as a continuous
pulse train delivered by an I/O pin. The pulse width modulation VP can
Figure 1.1
Javelin
(top view)
Aristides 4/28/05 11:35 AM
Formatted Table
sdill
Comment [2]:
The Javelin Stamp takes Parallax’s
BASIC stamps into a new direction.
The Javelin Stamp thrusts Parallax’s BASIC stamps
into a new direction.
Parallax’s BASIC Stamps take a new direction with
the Javelin.
The Javelin Stamp is an exciting new
microcontorller.
