it looks like it uses SPI, and a few other lines… 7 all up but you probably wont need all of them depends on what else you have connected to your core. The datasheet is a bit confusing and i don’t really understand the different SPI modes.
Plus you gain 4GPIO from it too 
not sure where the 1.8v comes from the datasheet shows 2.7 to 3.6v inputs, one each of the digital/analogue sections
i would definitely start with it on a breakout board like this to get it up and running