Description

When using PWM in UP-DOWN count mode, the PWM generator may generate a continuous High instead of Low or continuous Low instead of High under the following condition:

• The PWM generator is used with action for comparator A or B UP and DOWN to control the PWM cycle.
• The PWM comparator A or B is changed from a count of 2 or more to PWM Load Count value.
• A continuous High is generated if the invert option is enabled.
• A continuous Low is generated if the invert option is disabled.

Workaround

• Use DOWN count mode of PWM
• When changing from any value (other than 1) to the PWM load count value in the Comparator Load Register, always go to value of 1 before going to the PWM load count value.