User manual

Code Mercenaries
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3.1 Compatibility with 3.3 V slaves
If a 3.3V slave is to be connected the internal pull
up resistors of the IOW24 should be switched off
by software on enabling the I2C function.
This requires external pull up resistors which may
be added either on the slave side or soldered to the
lower side of the dongle PCB. It is recommended
to add protection diodes so the slave does not see
5V on the signal lines before the I2C function of
the IO-Warrior24 is initialized.
There are landing pads for four components on the
lower side of the dongle PCB, the outer ones are
intended for pull up resistors, the inner ones for
protection diodes. The pads facing the end of the
board connect to 3.3 V.
Protection diodes must connect to 3.3 V with their
cathodes. MELF packages are not recommended
since they are too thick to fit in the dongle case
4. Software/Programming support
The IO-Warrior SDK is used with the dongle. The
SDK, additional software, and the data sheet for
the IO-Warrior is available on our website.
5. FCC / CE
The IOW24-DG is sold as kit. As such it can not be
FCC or CE approved.
Code Mercenaries has excerted greatest care in
designing this module to minimize RF emission
and assure stable operation. Though the use of
proper cable materials and correct integration into
a device is crucial to assure product safety and
interference free operation.
The integrator who assembles the module into a
device has to take care for appropriate testing and
safety measures.
6. Ordering information
The standard packaging for IOW24-DG is a blister
pack containing the parts for one unit.
The order code is:
IOW24-DG
Legal Stuff
This document is ©1999-2009 by Code
Mercenaries.
The information contained herein is subject to
change without notice. Code Mercenaries makes
no claims as to the completeness or correctness of
the information contained in this document.
Code Mercenaries assumes no responsibility for
the use of any circuitry other than circuitry
embodied in a Code Mercenaries product. Nor
does it convey or imply any license under patent or
other rights.
Code Mercenaries products may not be used in any
medical apparatus or other technical products that
are critical for the functioning of lifesaving or
supporting systems. We define these systems as
such that in the case of failure may lead to the
death or injury of a person. Incorporation in such a
system requires the explicit written permission of
the president of Code Mercenaries.
Trademarks used in this document are properties of
their respective owners.
Code Mercenaries
Hard- und Software GmbH
Karl-Marx-Str. 147a
12529 Schönefeld OT Grossziethen
Germany
Tel: x49-3379-20509-20
Fax: x49-3379-20509-30
Mail: [e-mail]
Web: www.codemercs.com
HRB 9868 CB
Geschäftsführer: Guido Körber, Christian Lucht
V1.0.0 September 8th 2009