I've seen microcontrollers which claim to drive LCD segments.

For example, the CC430 can drive 96 segments. But, it's a 64 pin chip.

So, it must be providing signals for some kind of mux, what is this interface called?

For dot matrix LCDs, could a microcontroller like this drive more than 96 segments by scanning? I want to drive a small (eg. 32x32 pixel display).