know how to config registers bcsctl1,2 and dcoctl to set clocks
know how to config low power modes
know how to config interrupts, desc all steps of handling an interrupt
know interrupt nesting, interrupt selective masking

to generate a some kind of clock
dcoctl 01100000 0x60
bcsctl1 00100100 0x24
bcsctl2 10000000 0x80

mclk 840khz:must come from dco
smclk 420khz:can be pulled from dco w/ divider
aclk 32khz:

DCO: network of resistors and caps that can be played with so that you can get a variable frequency signal out of it

lots of talk about power consumption