اپتوالکترونیک ال ای دی آدرس‌پذیر و ویژه

Product Attributes

Introduction

WS2815B is an intelligent external-control LED light source that integrates the control circuit and the light-emitting circuit into a single package. Its form factor is identical to a 5050 LED, with each component functioning as one pixel. Each pixel incorporates an intelligent digital interface, data latch, signal reshaping and amplification drive circuit, high-precision internal oscillator, and high-precision constant-current control module, effectively ensuring highly consistent color output across all pixels. Dual-signal transmission is implemented so that a single pixel failure does not affect the overall color display. The data protocol uses single-wire return-to-zero (RZ) communication. After power-on reset, the DIN pin receives data transmitted from the controller. The first 24 bits of incoming data are extracted by the first pixel and stored in its internal data latch; the remaining data is reshaped and amplified by the internal signal-reshaping circuit, then forwarded via the DO pin to the next cascaded pixel. Each pixel transmission reduces the data stream by 24 bits. The pixels employ automatic reshaping and forwarding technology, so the number of cascadable pixels is not limited by signal propagation constraints — only by signal transmission speed requirements. The port scanning frequency of up to 2KHz ensures flicker-free performance even when captured by high-definition cameras, making it ideal for high-speed motion applications. A RESET time of 280μs or longer ensures that signal interruptions will not trigger false resets, enabling support for lower-frequency, cost-effective MCUs.

Features

• Control circuit and RGB chip integrated in a single 5050 package component, forming a complete externally-controlled pixel
• 12V supply voltage effectively reduces the operating current of the entire pixel, lowers PCB voltage drop, and maximizes color mixing consistency over long transmission distances
• Built-in signal reshaping circuit: each pixel reshapes the waveform before output upon receiving a signal, preventing cumulative waveform distortion along the line
• Each pixel's three primary colors support 256-level brightness, enabling full 16777216-color true color display
• Port scan frequency: 2KHz
• Serial cascade interface — data reception and decoding via a single signal line
• No additional circuitry required when transmission distance between any two points does not exceed 2 meters
• Cascade count ≥ 1024 pixels at 30 frames/second refresh rate
• Data transmission speed up to 800Kbps
• Highly consistent light color, high cost-performance ratio

Applications

• LED full-color illuminated letter light strings
• LED full-color flexible and rigid light strips
• LED guardrail tubes
• LED point light sources
• LED pixel screens