dsPIC33EP - PWM Outputs are Disabled when I²C is Enabled

What causes the dsPIC33EP64GS502's PWM outputs to be disabled when I²C is enabled?

Both the PWM's fault source signal and I²C are connected to the RB8 pad. Whenever the pad is driven high (RB8 = 1), the PWM fault signal source is activated causing the PWM signal not to appear on the output pin. To enable the PWM to work with I²C, the PWM fault pin must be disabled by setting FCLCONx = 0x0003 (FLTMOD:11).

© 2024 Microchip Technology, Inc.
Notice: ARM and Cortex are the registered trademarks of ARM Limited in the EU and other countries.
Information contained on this site regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.