Main Features
● Intelligent reverse connection protection, the power supply reverse connection will not damage the IC.
● The IC control circuit uses a power source with the LED point light source.
● The control circuit is integrated with the RGB chip in a 5050 package element, forming a complete external control pixel point.
● Built-in signal shaping circuit, any pixel receives the signal after the waveform shaping and then output, to ensure that the line waveform distortion will not accumulate.
● Built-in electrical reset and drop reset circuit.
● The three-base color of each pixel can achieve 256 level brightness display, and complete the full true color display of 16777216 colors, with a scanning frequency not less than 400Hz / s.
● Serial cascade interface can receive and decoding data through a signal line.
● There is no need to add any circuit at a transmission distance of no more than 5 meters.
● When the refresh rate is 30 frames / s, the cascade number is not less than 1024 points.
● Data delivery speeds are up to 800Kbps.
● The color of the light is highly consistent and cost-effective.
Main application areas
● LED full color light-emitting word lamp string, LED full color module, LED full color soft light strip hard light strip, LED guardrail tube.
● LED point light source, LED pixel screen, LED alien screen, a variety of electronic products, electrical equipment horse-running lights.
Product overview
WS2813B is an intelligent external control LED light source integrating control circuit and light-emitting circuit. Its outer shape is the same as a 5050LED lamp bead, and each element is a pixel point. The pixel interior contains the intelligent digital interface data latch signal shaping amplifier drive circuit, also contains a high precision internal oscillator and 12V high voltage programmable current control part, effectively ensure that the pixel light color is highly consistent.
Data protocol using single line zero code communication mode, the pixel reset, the DIN end accept the data transmitted from the controller, the 24bit data sent first extracted by the first pixel, sent to the pixel internal data latch, the remaining data after the internal shaping circuit amplification through the DO port to forwarding output to the next cascade pixel, each pixel transmission, the signal is reduced by 24bit.The pixels use automatic shaping and forwarding technology, so that the cascade number of the pixels is not limited by the signal transmission, only limited by the signal transmission speed requirements.
LED has the advantages of low voltage drive, environmental protection and energy saving, high brightness, large scattering Angle, good consistency, ultra-low power, ultra-long life and so on. Integrating the control circuit over the LED makes the circuit simpler, smaller, and easier to install.
Mechanical dimensions (in mm)
Mechanical dimensions and pins diagram (in mm)
Pin function:
Maximum rating (if not otherwise specified, TA=25℃,VSS=0V ）
Electrical parameters (if not specified, TA=-20～+70℃，VDD=4.5～5.5V,VSS=0V ）
Switch characteristics (if not otherwise specified, TA=-20～+70℃，VDD=4.5～5.5V,VSS=0V ）
LED natural parameter
Data transfer time (TH + TL=1.25s ± 600n s)
Time sequence waveform
Input code type:
method of attachment:
Data transfer method:
Note: D1 is the data sent by the MCU terminal, and D2, D3 and D4 are the automatic shaping and forwarding data of the cascade circuit.
24 The bit Data Structure:
Note: Start high start, send data in the order of GRB.
Typical application circuit:
