NXP Semiconductors UM10317 User Manual

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PCA9633 demonstration board OM6282

Rev. 01 — 15 December 2008 User manual

Document information




I2C, PCA9633, RGB, RGBA, 2 x 8-bit PWM




The OM6282 is an add-on to NXP’s I2C 2005 -1 demo board. This daughter


board makes it easy to test and design with the PCA9633, a 4-bit Fast-mode


Plus (Fm+) LED driver. These boards, along with the I2CUSB Lite GUI


(PC based), provide an easy to use evaluation platform.

NXP Semiconductors




PCA9633 demonstration board OM6282

Revision history













user manual; initial release




Contact information

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: salesaddresses@nxp.com


© NXP B.V. 2008. All rights reserved.

User manual

Rev. 01 — 15 December 2008

2 of 11

NXP Semiconductors



PCA9633 demonstration board OM6282

1. Introduction

The PCA9633 evaluation board features LEDs for color mixing, blinking and dimming demonstrations. A graphical interface allows the user to easily explore the different functions of the driver. The board can be connected in series with other I2C demo-boards to create an evaluation system.

The IC communicates to the host via the industry standard I2C-bus/SMBus port. The evaluation software runs under MicroSoft Windows PC platform.

2. Features

A complete evaluation platform for the PCA9633 4-bit LED driver

Easy to use GUI based software demonstrates the capabilities of the PCA9633

On-board LEDs for visual experience

Convenient test points for easy scope measurements and signal access

USB interface to the host PC

No external power supply required

3.Getting started


Familiarity with the I2C-bus is helpful but not required.

3.2 Static handling requirements


This device is sensitive to ElectroStatic Discharge (ESD). Therefore care should be taken during transport and handling. You must use a ground strap or touch the PC case or other grounded source before unpacking or handling the hardware.

3.3Minimum system requirements

PC Pentium 60 processor (or equivalent), 8 MB RAM, 10 MB of hard drive space

One USB port (either 2.0 or 1.1 compatible)

Windows 98SE, ME, 2000, XP, or Vista

I2C 2005-1 demonstration board (OM6275)

3.4Power requirements

The NXP demonstration board I2C 2005-1 and OM6282 hardware obtain power from the PC USB port. Care should be taken not to exceed the USB port current capabilities.


© NXP B.V. 2008. All rights reserved.

User manual

Rev. 01 — 15 December 2008

3 of 11

NXP Semiconductors



PCA9633 demonstration board OM6282


4.1I2C 2005-1 board and WIN-12CUSB Lite software

The OM6282 is a daughter card to the OM6275 I2C 2005-1 demo board. You may download the WIN-I2CUSB Lite Software, the OM6275 user manual UM10206, and find ordering information at the NXP web site http://www.standardics.nxp.com/support/boards/i2c20051/.

4.2 OM6282 connection to I2C 2005-1 board

The I2C 2005-1 demo board should be disconnected from your PC before mounting the OM6281 board on to it. The OM6282 board has a 9-pin female connector that connects to the JP1 male connector on the I2C 2005-1 board.

With both boards facing you, connect the OM6282 board to the I2C 2005-1 board before connecting the USB cable. Once the board is connected, connect the USB cable and start the WIN-I2CUSB Lite software. You are now ready to evaluate the PCA9633.

5. Hardware description

LED light diffuser


J2 OE select probe

J3 card extender connector

J1 connector to

I2C 2005-1 board

address and OE selector

Fig 1. OM6282 demo board

The OM6282 board has 3 jumper headers:

J1 is for connection to JP1 on I2C 2005-1 demo board.

J2 allows an external OE to be connected to the board.

J3 is for pass-through signals from the I2C 2005-1 demo board.

IC2 is an unpopulated area for signal access. All address, I2C, LED signals are available.


© NXP B.V. 2008. All rights reserved.

User manual

Rev. 01 — 15 December 2008

4 of 11

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