I'm really new to hobby electronics, just got a raspberry pi and trying to read different data sheets and requirements to figure out what I need to get so that I can drive an LED strip with the correct voltages and current. I've been looking at the data sheet for the WS2812 NeoPixels here: https://cdn-shop.adafruit.com/datasheets/WS2812.pdf
I'm quite confused about the Input current listed there and what exactly it means. Firstly it says in the Condition VI=VDD/VSS but VSS is 0 so is that not actually a division going on there? And I'm a little confused about it being a max of 1 micro Amp for the input, is that really the max current it can take?
I'm trying to figure out what sort of pull-up resistor rating I need so that I can drive the data line with an external 5v power supply and control the switch by turning on and off sending the 5v to ground with the GPIO pins of my raspberry pi, something similar to #4 in this answer on another post: https://electronics.stackexchange.com/a/82149/166893
Perhaps I'm going about this wrong and I don't need this? If there is any guidance I can get in determining the pull up resistor rating that I need that would be great. I can see that I need at least 3.5V but that doesn't seem to be all the information I need.