Question

The timer is running in the up mode with a period of 800 cycles. Channel 1 engages the output mode (Set/Reset) and sets its register TACCR1 = 600. Explain what happens. Draw a timeline.

Answer 1

Answer:

Explanation:

Part a)

_______________ ____________ _____________ ___

TAR | /\ \/ /\ \/ /\

|//////////|____________|____________|_____________|__________|

0 600 800 600 800 600

PWM Duty Cycle = 200/800 = 25%

Part b)  

______________ _________________ _________ _________________

TAR | \/ /\ \/ /\ \/

|//////////|_________|_________________|__________| _______________|

0 600 800 600 800 600

PWM Duty Cycle = 600/800 = 75%