since I'll need a pin to pull CS low for each, is that my cap?
Or is it bus congestion / contention / etc.
Any way to tell from looking at an IC's datasheet if it's going to be an "SPI troublemaker"
But life rarely matches datasheets
No in electronics life is defined by the data sheet
even where there's a clearly defined specification to comply to.
not an unambiguous standard.
It just presents "learning opportunities" for applications designers.
I don't think that makes the "standard" ambiguous.