4. Determine overflow period for timer TIM7, if timer clock frequency is 80 MHZ, timer prescaler register (PSC) is 79 and timer auto-reload register (ARR) is 499. Show your work.
To determine the overflow period for timer TIM7, we first need to calculate the timer clock frequency with the given prescaler value.
Timer clock frequency = Timer input clock frequency / (PSC + 1)
Timer clock frequency = 80 MHz / (79 + 1)
Timer clock frequency = 80 MHz / 80
Timer clock frequency = 1 MHz
Next, we calculate the timer period using the timer clock frequency and the auto-reload register value.
Timer period = (ARR + 1) / Timer clock frequency
Timer period = (499 + 1) / 1 MHz
Timer period = 500 / 1,000,000
Timer period = 0.0005 seconds or 500 microseconds
Therefore, the overflow period for timer TIM7 with the given parameters is 500 microseconds.