APA102-2020 is a new model of APA102 IC for the three-color RGB Dimming control strip and string ,This ic using the CMOS process to provide three-color RGB LED output driver to adjust the output with 256 gray scale and 32 brightness adjustment ,APA102 with 2 signal output way, one is clock ,another is data, the clock and data is synchronized,so that the crystal cascade piece of output movement is synchronized .

APA102 2020 LED Datasheet

http://www.addressableledstrip.com/Datasheet-26.html