CY3265O-RGB Cypress Semiconductor Corp, CY3265O-RGB Datasheet - Page 11

• Manufacturer Part Number: CY3265O-RGB
• Description: EVAULATION KIT EZ-COLOR
• Manufacturer: Cypress Semiconductor Corp
• Series: EZ-Color™r

Specifications of CY3265O-RGB

• Main Purpose: Lighting, LED Light Engine, RGB
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: CY8CLEDxx
• Kit Contents: CY3265O-RGB Evaluation Board, Blue PCA Enclosure/Case, 12V 1A Power Supply, Retractable USB Cable
• Development Tool Type: Evaluation Board
• Kit Contents Descriptive: Evaluation Board, Tools
• 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: Compliant

2.3
CY3265-RGB Evaluation Kit Guide, Doc. # 001-46025 Rev. **
Representing Colors
The application has two modes of control: a CIE Color Selection Mode and Direct LED Control
Mode. These two modes are selected using tabs displayed on the upper left edge of the application
window. The CIE Color Selection Mode is the active display when the application is started and is
intended to be the most common mode used to control the RGB unit.
The colors that can be mixed are determined by the choice of LEDs used in the unit. The colors pro-
duced by individual LEDs are referred to as primary colors. All other colors are created by mixing
these primary colors. Mixed colors appear the same to the eye as if produced by an LED with that
color as its primary color. The interior portion of the triangle displayed on the color chart represents
the range of colors that can be mixed by the LEDs in the unit. The range of colors that can be mixed
when using a given set of primary LEDs is called the color gamut for those LEDs. Once the primary
LED colors are determined, as they are in the evaluation unit, the color gamut is defined by those
choices. Thus, the triangle displayed by the application defines the color gamut for the unit. Colors
outside of the color gamut cannot be represented by the given LEDs and the user cannot select col-
ors outside the color gamut
The CIE Color Mix Mode displays the 1931 CIE Color chart. This chart represents the range of col-
ors visible to the human eye. Clicking anywhere within the color gamut triangle places a dot at the
selected point. The corresponding CIE coordinates for that color coordinate are transmitted to the
RGB unit, where the selected color is displayed by adjusting the three LEDs to brightness levels that
create the specified mixed color. The resulting coordinates are displayed in the CIE Coordinates
panel on the upper right portion of the display. The CIE 1931 x, y coordinates are displayed in the
upper two coordinate fields and the u’, v’ coordinates are displayed in the lower two fields (see
Figure
into these fields. The user can enter a color point in x, y coordinates, u’, v’ coordinates, or any com-
bination of the two coordinate systems.
Figure 2-2. The CIE Color Coordinate Fields
The Direct LED Control Mode is an alternative to specifying colors using CIE coordinates
on page
slider from bottom to top causes the corresponding LED to light from zero to one-hundred percent of
its maximum rated flux. When the direct LED control mode is enabled, all controls that relate to mix-
ing colors are disabled, including the Requested Luminous Flux slider that sets the total flux of a
given mixed color: these controls have no meaning when setting the individual LED flux levels
manually.
1. The triangle is an approximate gamut boundary. For points adjacent to the triangle edges, especially close to the LED coordinates (that is,
the corners), it is possible to select a point that falls outside of the color gamut. For any coordinate outside of the gamut, the LEDs turn off.
2-2). An alternative to selecting a color by clicking in the color chart is to enter coordinates
12). This mode displays three slider controls, one for each LED on the board. Moving a
1
.
Application Guide
(Figure 2-3
11