USB-I²C-bus dongle OM13518 with a GUI
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© NXP B.V. 2014. All rights reserved.
1. Introduction
The OM13518 dongle is an easy to use interface handler between the USB of a PC and
the I2C-bus. The software control via a Graphical User Interface (GUI) allows a fast start
to communicate with different circuits.
• USB-2 is used for data and the 5 V power supply.
• Three I2C-bus ports are wired in parallel.
• Cables to connect up the I2C-bus are enclosed.
2. Key features
2.1 USB-I2C interface module
The OM13518 dongle is a ready to run module. It creates a virtual COM-port via an USB
connection. It provides three I2C-bus connections with 5 V option to power the application
(max 450 mA).
Power consumption: module/total: <50 mA/max 500 mA
I2C-bus clock frequency: 245 Hz – 400 kHz
USB driver for Windows: Windows XP, Windows 7, Windows 8
Size: 50 mm × 40 mm × 15 mm
2.2 Software
The software control via a GUI allows a fast start to communicate to the different circuits.
Aside from the detailed GUI pages for the Real-Time Clocks, a UNIVERSAL
INTERFACE allows to communicate with any I2C-bus device by entering directly the hex
codes. Example:
s A2 28 p
Where s stands for the I2C START and p for the I2C STOP condition.
