More Pixel Protocols

LED Pixel Protocol UCS7804

Overview

This protocol was designed by Lianxinke in China. UCS7804 allows connection of either one RGB or one RGBW LED per chip, and selection between RGB/RGBW is made available through digital configuration. It receives 8-bit data, but upscales this to a gamma-corrected 16-bit curve, giving the ability for high resolution, with fewer DMX channels required. There is also a built-in gray level smoothing function built-in to the protocol, allowing for even smoother looking dimming curves. The control circuit comes in a SOP8 package, allowing for more flexibility with LED choice.

Current Control

UCS7804 has the ability to digitally control the current of the connected LEDs. Use the 6-bit current control per color to lower the brightness without sacrificing resolution, and tune the current of individual colors, allowing for more accurate color mixing. This individual current control can be set when configuring your PixLite Mk3 controller.

Specifications

PixLite Mk1

PixLite Mk2

PixLite Mk3

Clock Type

Data-Only 

Color Resolution

Bits 

Built-in Gamma Correction

Enhanced to 16 Bits (+8 Bits) 

Current Control

Per Color: Bits 

Physical Package

SOP8 

RGB

RBGW

Input Voltage

5V 

Output Pixel Voltage

30V 

PWM Rate

16,000Hz 

Suitable Camera

Up to 533fps 

Data Transfer Rate

660kbps 

Redundant Data Line

Considerations for Use

Advantages

  • Very high PWM rate allows for filming these pixels with cameras up to 533fps
  • Up to 30V, allowing for very long cable lengths
  • Additional 8 bits of built-in gamma correction enhances LED output to 16 bits, making colors more accurate and dimming curves more smooth
  • Option for white LED allows for higher brightness and more color mixing options

Disadvantages

  • Data-only restricts refresh rates to be limited by the speed of the protocol, which can be slow

PixLite Support

Are you looking for UCS7804 pixel drivers that work with Art-Net or sACN?

All PixLite Mk3 products support UCS7804 as an available Pixel IC type, so get in touch with us to find out how the lighting specialists at Advatek can support you in your pixel lighting project.

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