Question

The primary oscillator frequency on explorer 16 is 14.535 MHZ. PLL is used. What is the instruction cycle frequency (Fcy)?

Fosc (Processor/Peripheral clock Frequency) = 14.535 x 4 = 58.14/2 = 29.07 MHz.
Tcy (Instruction Cycle) = 1/29.07 = 0.0344uSec.

is this correct?

Answer 1

Yes, your calculations are correct. The instruction cycle frequency (Fcy) is calculated by dividing the processor/peripheral clock frequency (Fosc) by 2, which in this case is 29.07 MHz. The period of each instruction cycle (Tcy) is then calculated by taking the reciprocal of Fcy, which gives a value of 0.0344 microseconds (or 34.4 nanoseconds).