CY3261A-RGB

CY3261A-RGB Datasheet


CY3261A-RGB

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CY3261A-RGB

EZ-Color Evaluation Kit Board Guide

Cypress Semiconductor 198 Champion Court

San Jose, CA 95134-1709 Phone USA Phone Intnl :

Copyrights

Cypress Semiconductor Corporation, The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as critical components in lifesupport systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.

PSoC Designer , Programmable System-on-Chip , PSoC Express , EZ-Color , and PrISM are trademarks and is a registered trademark of Cypress Semiconductor Corp. All other trademarks or registered trademarks referenced herein are property of the respective corporations.

Any Source Code software and/or firmware is owned by Cypress Semiconductor Corporation Cypress and is protected by and subject to worldwide patent protection United States and foreign , United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without the express written permission of Cypress.

Disclaimer CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not assume any liability arising out of the application or use of any product or circuit described herein. Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress's product in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.

Use may be limited by and subject to the applicable Cypress software license agreement.

Contents

Introduction Onboard Control

Contents

Introduction

The purpose of the CY3261A-RGB demonstration board is to use Cypress’s EZ-Color HB-LED Controller powered by PrISM and technology to control three primary, high power LEDs, creating mixed-color output. The three LEDs used on the CY3261A-RGB demonstration board are the primary colors red, green, and blue. Depending upon the application and the desired color gamut, LEDs of any three colors can be used in a design.

One side of the board contains the high brightness LEDs used to demonstrate color mixing by the EZ-Color HB LED controller see Figure The LEDs are placed within a permanently attached, hexagonally shaped diffuser housing. This housing should not be removed.

Figure Demonstration Board, LED Side

Diffuser

Figure CY3261A-RGB Demonstration Board, Control Side.

Contrast Adjust Color Select S1

On/Off S2

Onboard Control

The ON/OFF Button

The RGB board has two buttons labeled ‘S1’ and ‘S2’ and a liquid crystal display on the opposite side of the board from the high power LEDs. These buttons allow the board to be demonstrated without using a personal computer to control the board. When held properly for use, the buttons are on the bottom edge of the board and the liquid crystal display is at the top left edge of the board. When held in this orientation, button S2 the right-most button alternately turns the LEDs ON and OFF. The default setting, when power is applied, is OFF. Pressing button S2 illuminates the LEDs.

Caution The purpose of this demonstration board is to demonstrate the use of an EZ-Color HB-LED Controller for controlling high brightness LEDs. DO NOT LOOK AT THE HIGH BRIGHTNESS LEDs WHEN THEY ARE ILLUMINATED! These devices can cause permanent eye damage, even when viewed for a short time!

The Color Selection Button

Button S1 the left-most button along the bottom edge of the board cycles between seven preset colors. The initial color is white. Pressing button S1 changes to the next color of the seven preset colors. The sequence displayed is white power on default , red, green, blue, yellow, magenta, and cyan.

Note If the board is controlled from a personal computer using the USB interface, the color displayed upon power up and pressing the ON/OFF button will be the last color setting selected using the application. If the board has never been controlled from a personal computer, or the last color selected could not be displayed at the selected flux, the LEDs do not illuminate an impossible color
is stored in Flash . Pressing the color selection button selects a valid color for display from the seven preset colors and the LEDs illuminate with that color.

Application Control

The board is controlled using the Windows application provided on the kit CD. This application is installed on a personal computer running either Windows XP or Windows Vista. See the CY3261A-RGB Evaluation Kit Application Guide, included on the CD, for details about how to install and use the RGB application.

When using the board with the RGB application, the board must be attached to the computer using a USB cable included, see Figure The board can be attached to the computer before or after the application is started.

Figure RGB Board with USB Control Cable Attached

The Liquid Crystal Display LCD

The LCD displays the currently selected color using CIE 1931 color coordinates. The values displayed represent the present color, whether chosen from the seven preset colors or selected from the control application running on a personal computer. If the LEDs are illuminated, an asterisk * is shown to the left of the display in the top row of the LCD. This is useful if the last color selected cannot be displayed with the given LEDs .

Note When the board is used the first time, it might be necessary to adjust the contrast for the LCD “Contrast adjust,” Figure 1-2 on page This control is an orange capped potentiometer R10 located directly below the LCD offset to the left of the LCD’s center. The control is adjusted using an appropriately sized tool. Turning the potentiometer clockwise increases the contrast, turning it counter-clockwise decreases the contrast.

Document Title RGB Light Demo Board Guide

Document Number 001-15643

Issue Date

Origin of Change

Description of Change
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Datasheet ID: CY3261A-RGB 507778