CY3265C-RGB Cypress Semiconductor Corp, CY3265C-RGB Datasheet - Page 17

• Manufacturer Part Number: CY3265C-RGB
• Description: EVAULATION KIT EZ-COLOR
• Manufacturer: Cypress Semiconductor Corp
• Series: EZ-Color™r

Specifications of CY3265C-RGB

• Main Purpose: Lighting, LED Light Engine, RGB
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: CY8CLEDxx
• Kit Contents: CY3265-RGB Evaluation Board, Tools CD, Retractable USB Cable, PSoC MiniProg Programme
• Development Tool Type: Evaluation Board
• Kit Contents Descriptive: Evaluation Board, Tools CD, Blue
• Core Chip: CY3265
• No. Of Outputs: 1
• Svhc: No SVHC (15-Dec-2010)
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Primary Attributes: -
• Secondary Attributes: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

3.1
CY3265-RGB Evaluation Kit Guide, Doc. # 001-46025 Rev. **
3.
Color Accuracy
The colors displayed by the CY3265 RGB unit are based upon average values for the variety of
LEDs available for this unit. Different manufacturer’s LEDs vary from one another in their color and
different manufacturing cycles of a given manufacturer’s LED also vary. Due to this, the colors dis-
played may not be accurate for the particular LEDs on your device, although every effort has been
made to determine reasonable average values for the various LEDs used, you may notice accuracy
variations, especially with coordinates generally corresponding to white light.
The high accuracy color capability of your RGB unit requires the unit to be calibrated. Calibration
requires you to determine the precise color coordinates for each of the three LEDs used on your
LED board. Such color coordinates can be obtained by using a precision color meter, such as the
Minolta Chroma Meter CL-200. Less accurate, subjective color adjustment can be obtained by trial
and error. The calibration values are defined in the RGB firmware. The procedures for accomplishing
this is described in the following section.
Finding Calibration Values
To determine calibration values, the Intelligent Lighting Control application should be used to illumi-
nate each LED at it's maximum intensity before obtaining a calibration reading. The best way to
accomplish this is to attach the CY3265-RGB unit to a PC that has the Intelligent Lighting Control
application installed. Start the application and select the Direct LED Control tab. Slide the Red LED
slider to 100% and make sure the Green and Blue sliders are set at 0%. Using a color meter, take a
reading from the illuminated color cube. To ensure greatest accuracy, make sure there are no other
light sources visible to the light meter when obtaining the reading. Record the luminosity and X, Y
CIE 1931 coordinate values.
Set the Red slider to 0%, the Green slider to 100% and the Blue slider to 0%. Repeat the meter
reading and record the resulting readings for the Green LED. Finally, repeat the procedure with the
Blue LED set to 100% and the Red and Green set to 0%. You should have recorded nine values,
three for Red, three for Green and three for Blue. These reading will be configured into the firmware
as described in the next section.
WARNING: HIGH BRIGHTNESS LEDs CAN CAUSE PERMANENT
EYE DAMAGE!
Do not look at the LEDs if they are not covered by the protective
enclosure. The LEDs illuminate at a very high intensity and can
cause permanent eye damage if they are viewed without the
protective enclosure.
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