APA102 IC Information: APA102 IC built-in LED Size: 5*5mm (the same as SMD5050 LED) Emitting color: RGB Two signal pins: DAT, CLK Each LED as one pixel

APA102 IC datasheet:

China mainland version datasheet download: 
http://www.packever.com/pdf/2015-9-5-19-3-20.pdf

Taiwan version datasheet download:
http://www.packever.com/pdf/2015-9-5-19-49-13.pdf

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