Complete data sheet for APA106 diodes

[agehall]

I’m trying to use an APA106 RGB diode and I’m having some issues. Does anyone know where to find a complete data sheet that specifies IO voltage levels? The data sheets I’ve found only specifies the timings for high and low bits.

[Terry Bites]

It shows a Vdd of 5V on the datasheet. Vdd tells you its cmos. So about 1/3 and 2/3 vdd are most likely where your logic thresholds lie. I'd assume that that the LED Vdd and your system need to be about the same else you need a level shifter. [They eat 60mA each (R+G+B all on). 1mA all off. Allegedly] Check your rails aren't sagging or boucning during logic tranistions. Look at you local decoupling scheme. You probably need 100n right at the LED leads.

[agehall]

What datasheet did you find? In the one I found at Adafruit I can’t see anything about CMOS…

I’ve managed to drive one using Vdd at 5V and 3v3 on DIO but I’m guessing that is borderline… No caps on the bread board yet.