XL-5050RGBC-SK6812B

SK6812B是一个集控制电路与发光电路于一体的智能外控LED光源。其外型与一个5050LED灯珠相同，每个元件即为一个像素点。像素点内部包含了智能数字接口数据锁存信号整形放大驱动电路，电源稳压电路，内置恒流电路，高精度RC振荡器，输出驱动采用专利PWM技术，有效保证了像素点内光的颜色高一致性。芯片采用单线通讯方式，采用归零码的方式发送信号。芯片在上电复位以后，接受DIN端打来的数据，接受够24bit后，DOUT端口开始转发数据，供下一个芯片提供输入数据。在转发之前，DOUT口一直拉低。此时芯片将不接受新的数据，芯片OUTR、OUTG、OUTB三个PWM输出口根据接受到的24bit数据，发出相应的不同占空比的信号，该信号周期在4ms。如果DIN端输入信号为RESET信号，芯片将接收到的数据送显示，芯片将在该信号结束后重新接受新的数据，在接受完开始的24bit数据后，通过DOUT口转发数据，芯片在没有接受到RESET码前，OUTR、OUTG、OUTB管脚原输出保持不变，当接受到80μs以上低电平RESET码后，芯片将刚才接收到的24bitPWM数据脉宽输出到OUTR、OUTG、OUTB引脚上。除DIN外，芯片额外设计了FDIN输入端，接收上一个芯片的DIN数据，也就是上上一个芯片的DOUT数据。级联时，如果某一颗芯片损坏，不影响数据传输，后续芯片仍能正常接收数据。LED具有低电压驱动，环保节能，亮度高，散射角度大，一致性好，超低功率，超长寿命等优点。将控制电路集成于LED上面，电路变得更加简单，体积小，安装更加简便。

SK (6812) is an intelligent external control LED light source integrating control circuit and luminous circuit. Its appearance is the same as a 5050 LED lamp bead, and each element is a pixel. The pixel contains an intelligent digital interface data latch signal shaping and amplification drive circuit, a power supply voltage stabilizing circuit, a built- in constant current circuit, a high- precision RC oscillator, and a patented PWM technology for output drive, which effectively ensures the high consistency of the color of the light in the pixel. The chip adopts single line communication mode, and sends signals by returning to zero code. After the chip is powered on and reset, it receives the data from the DIN terminal. After receiving enough 24 bits, the DOUT port starts to forward the data for the next chip to provide input data. The DOUT port is always pulled down before forwarding. At this time, the chip will not accept new data. The chip OUTR, OUTG, and OUTB PWM output ports will send corresponding signals with different duty cycles according to the received 24 bit data. The signal cycle is 4 ms. If the input signal at the DIN end is a RESET signal, the chip will send the received data to the display, and the chip will accept new data after the end of the signal. After receiving the initial 24 bit data, the chip will forward the data through the DOUT port. Before the chip receives the RESET code, the original output of OUTR, OUTG, OUTB pins will remain unchanged. When the chip receives the low- level RESET code above 80 μs, the chip outputs the 24 bit PWM data pulse width just received to OUTR, OUTG and OUTB pins. In addition to DIN, the chip is additionally designed with an FDIN input terminal to receive the DIN data of the previous chip, that is, the DOUT data of the previous chip. When cascading, if a chip is damaged, data transmission will not be affected, and subsequent chips can still receive data normally. LED has the advantages of low voltage drive, environmental protection and energy conservation, high brightness, large scattering angle, good consistency, ultra- low power, and ultra long life. The control circuit is integrated on the LED, which makes the circuit simpler, smaller and easier to install.

• 外观尺寸（L/W/H）：5.0×5.0×1.6mm
• 发光颜色及胶体：七彩幻彩/透明胶体
• 环保工艺符合ROHS要求
• 湿气敏感性等级（MSL）：4 - 5a级
• EIA规范标准包装
• 适用于SMT贴片自动化生产
• 适用于红外线回流焊制程
• 所有元件集成在产品封装中，不需要任何其他外围元件构成一个完整的外控像素点
• 断点续传，单颗IC或灯珠损坏不影响后续整体显示效果
• 智能反接保护，12V电源接反时不会损坏元器件
• 内置信号数据整形电路，接受完本单元数据自动将后续数据整形输出，保证线路波形畸变不会累加
• 灰度调节电路(256级灰度可调)
• 完成16777216种颜色的全真色彩显示
• 端口扫描频率2KHz/s
• 串行级联接口，能通过一根信号线完成数据的接收与解码
• 双输入串行级联接口（DIN.FDIN.）
• 任意两点传传输距离在不超过5米时无需增加任何电路
• 当刷新速率30帧/秒时，级联数不小于1024点
• 数据发送速度可达800Kbps
• 输出恒流值9mA，便于降低内置灯珠功耗
• 内置高精度和高稳定性振荡器

• LED全彩发光字灯串
• LED全彩模组
• LED幻彩软硬灯条，LED护栏管
• LED外观，情景照明
• LED异性屏
• 各种电子产品，电器设备跑马灯