62.5.2 Power Management

The PWM controller is not continuously clocked. The programmer must first enable the PWM clock in the Power Management Controller (PMC) before using the PWM. However, if the application does not require PWM operations, the PWM clock can be stopped when not needed and be restarted later. In this case, the PWM controller will resume its operations where it left off.

All the PWM registers except the Channel Duty Cycle (PWM_CDTYx) and Channel Period (PWM_CPRDx) registers can be read without the PWM peripheral clock enabled. All the registers can be written without the peripheral clock enabled.