NXP Semiconductors PCA9955 User Manual

UM10572

PCA9955 demonstration board OM13330

Rev. 1 — 7 June 2012 User manual

Document information

Info Content
Keywords Fm+ I2C-bus, PCA9955, RGB and white LEDs, 16-channel × 8-bit PWMs
Abstract The OM13330 is an add-on to 9-pin connector of the NXP I2C demo board

2005-1 or Fm+ I
easy to test and design with the PCA9955, a 16-channel Fast-mode Plus
(Fm+) 57 mA constant current and outputs allow up to 40 V for LED
supply. These boards, along with the Win-I2CUSB Lite GUI (PC based),
provide an easy to use evaluation platform.

2

C-bus development board. This daughter board makes it

NXP Semiconductors

UM10572

PCA9955 demonstration board OM13330

Revision history

Rev Date Description

v.1 20120607 user manual; initial release

Contact information

For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [e-mail]

UM10572 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.

User manual Rev. 1 — 7 June 2012 2 of 16

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1. Introduction

The PCA9955 evaluation board features LEDs for color mixing, blinking and dimming
demonstrations. A graphical interface allows the easy exploration of the dif ferent functions
of the driver . The board can be connected in series with other I
create an evaluation system.

The IC communicates to the host via the industry standard I
evaluation software runs under Microsoft Windows PC platform.

2. Features

UM10572

PCA9955 demonstration board OM13330

2

C-bus demo boards to

2

C-bus/SMBus port. The

• A complete evaluation platform for the PCA9955 16-channel Fm+ I

• Easy to use GUI-based software demonstrates the capabilities of the PCA9955

• On-board RGB and White 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

3.1 Assumptions

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

3.2 Static handling requirements

CAUTION

2

C-bus constant

current LED driver

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.

3.3 Minimum system requirements

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

•

• One USB port (either 2.0 or 1.1 compatible)

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

• I2C demonstration board 2005-1 (OM6275) or WIN-I2CUSB board (from

www.nxp.com/redirect/demoboard.com

)

3.4 Power requirements

The NXP demonstration board I2C 2005-1 and OM13330 hardware obtain power from the
PC USB port. Take care to not exceed the USB port current capabilities.

UM10572 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.

User manual Rev. 1 — 7 June 2012 3 of 16

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4. Installation

4.1 I2C demo board 2005-1 and WIN-I2CUSB Lite software

The OM13330 is a daughter card to the OM6275 I2C demo board 2005-1. You can
download the WIN-I2CUSB Lite Software, the OM6275 user manual UM10206, and find
ordering information at the NXP web site ics.nxp.com/support/boards/i2c20051/

The Win-I2CUSB Lite software from The Boardshop runs on Windows 98SE, ME, 2000,
and XP, and is compatible with any PC hardware having a minimum of a Pentium
processor and a USB port. The software allows the user to select one of the I
devices on the board from a menu and also provides a Universal mode (I2C Expe rt mode)
to allow users to create their own I

4.2 OM13330 connection to I2C demo board 2005-1

The I2C demo board 2005-1 should be disconnected from your PC before mounting the
OM13330 board on to it. The OM13330 board has a 9-pin female connector (J4) that
connects to the JP1 male connector on the I2C demo board 2005-1 as shown in Figure 1

UM10572

PCA9955 demonstration board OM13330

.

2

C-bus

2

C-bus commands with the same I2C-bus devices.

.

With both boards facing you, with USB connector on the right-hand side as shown in the

Figure 1

, connect the OM13330 board to the I2C demo board 2005-1 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 PCA9955.

Fig 1. PCA9955 demo board (OM13330) mounting to the I2C demo board 2005-1 (OM6275)

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User manual Rev. 1 — 7 June 2012 4 of 16

NXP Semiconductors

4.3 OM13330 connection to Win-I2CUSB hardware adapter board

The Win-I2CUSB board should be disconnected from your PC before connecting the
OM13330 board on to it. The OM13330 board has a 14-pin male connector (J2) that
connects to the 14-pin male connector (J1) on the Win-I2CUSB board as shown in

Figure 2

Connect the OM13330 board to the Win-I2CUSB 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 PCA9955.

UM10572

PCA9955 demonstration board OM13330

.

Fig 2. PCA9955 demo board (OM13330) connecting to the Win-I2CUSB board

UM10572 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.

User manual Rev. 1 — 7 June 2012 5 of 16