The primary oscillator is used as the clock source and its frequency is 7.648 GHz. The PLL is used. In that case, what is Fcy (Internal instruction cycle frequency)? Also, what is Tcy? You must show your calculation. Failing to do so will result zero mark for this question.
Fosc (Processor/Peripheral clock Frequency) = 7.648 x 4 = 30.592/2 = 15.296 GHz.
Tcy (Instruction Cycle) = 1/15.296 = 0.065uSec.
How to calculate Fcy?
Fcy is calculated by dividing Fosc by a factor known as the instruction cycle divider (IDIV). The IDIV value is determined by the specific microcontroller being used.
To calculate Fcy, we need to know the value of IDIV.
Fcy = Fosc / IDIV
Since the information provided does not specify the value of IDIV, it is not possible to calculate Fcy without this additional information.
To calculate Fcy (Internal instruction cycle frequency), you can use the formula:
Fcy = Fosc / 2
Given that Fosc (Processor/Peripheral clock Frequency) is 15.296 GHz, we can calculate Fcy as follows:
Fcy = 15.296 GHz / 2
Fcy = 7.648 GHz
Therefore, Fcy (Internal instruction cycle frequency) is 7.648 GHz.
Now, let's calculate Tcy (Instruction Cycle) using the formula:
Tcy = 1 / Fcy
Tcy = 1 / 7.648 GHz
Tcy ≈ 0.13 ns
Therefore, Tcy (Instruction Cycle) is approximately 0.13 ns.
To calculate the Fcy (Internal instruction cycle frequency), you need to use the equation provided:
Fcy = Fosc / 4
First, you need to calculate the Fosc (Processor/Peripheral clock frequency) using the given information:
Fosc = Primary oscillator frequency x PLL multiplier
Given:
Primary oscillator frequency = 7.648 GHz
PLL multiplier = 4
Calculating Fosc:
Fosc = 7.648 GHz x 4
= 30.592 GHz
Next, divide Fosc by 2, as mentioned in the equation, to determine Fcy:
Fcy = Fosc / 2
= 30.592 GHz / 2
= 15.296 GHz
Therefore, the Fcy (Internal instruction cycle frequency) is 15.296 GHz.
Note: The calculations were not shown in the previous answer format, but the correct method was used to calculate Fcy.