اپتوالکترونیک ال ای دی آدرس‌پذیر و ویژه

Product Attributes

Introduction

WS2812 is an intelligent externally-controlled LED light source that integrates the control circuit and the light-emitting circuit into a single package. Its form factor is identical to a standard 5050 LED, with each component serving as one pixel. Each pixel contains a smart digital interface, data latch, signal reshaping and amplification drive circuit, as well as a high-precision internal oscillator and a programmable constant-current control section, effectively ensuring highly consistent color output across pixels. 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 loaded into its internal data latch; the remaining data is reshaped and amplified by the internal signal conditioning circuit, then forwarded via the DO pin to the next cascaded pixel. With each pixel transmission, the signal is reduced by 24 bits. The pixels employ automatic reshaping and forwarding technology, so the number of cascaded pixels is not limited by signal integrity — only by signal transmission speed requirements. The port scan frequency of up to 2KHz ensures no flickering even when captured by high-definition cameras, making it ideal for high-speed moving applications. The RESET time of over 280μs prevents false resets during interruptions, enabling support for lower-frequency, cost-effective MCUs. The LED offers the advantages of low-voltage drive, environmental friendliness and energy efficiency, high brightness, wide scattering angle, excellent consistency, ultra-low power consumption, and ultra-long lifespan. Integrating the control circuit directly onto the LED simplifies the overall circuit design, reduces the form factor, and makes installation more convenient.

Features

• IC control circuit and LED point light source share a single power supply.
• Control circuit and RGB die integrated in a single 5050 package component, forming a complete externally-controlled pixel.
• Built-in signal reshaping circuit; each pixel reshapes the waveform before forwarding the signal, preventing waveform distortion from accumulating along the line.
• Built-in power-on reset and power-down reset circuits.
• Each pixel supports 256 brightness levels per primary color, enabling full true-color display of 16,777,216 colors.
• Port scan frequency: 2KHz/s.
• Serial cascade interface; data reception and decoding via a single signal line.
• No additional circuitry required for any two-point transmission distance not exceeding 2 meters.
• Cascade count ≥ 1024 pixels at a refresh rate of 30 frames/second.
• Data transmission speed up to 800Kbps.
• Highly consistent light color; excellent cost performance.

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