Static Power or Core Power = Vcc X Icc
Dynamic Power or I/O Switching Power = a × f × CL × V 2 x (number of I/Os that are switching),
a is the activity factor, or the ratio of frequency at which outputs toggle to the clock frequency
= 0.5 for single data rate devices like Std Sync, NoBL™- SRAMs;
= 1 for double data rate devices (such as DDR/QDR™ SRAMs)
f = operating frequency
CL = external load capacitance
V is output voltage swing,
= Vddq for unterminated load
= Vddq/2 for a terminated load with pull-up termination.
We also have an app note on this. Kindly go through it once and let us for any queries.