3.4.4.12 Module Operation During Non-Cached Events

When the PBU is enabled (CHECON.ON = 1), certain fetches from program memory will not be cached and may result in the generation of an error event depending on the cause. The following fetches from program memory are not cached, even if the data is consumed by the CPU:

  • A program memory data error
  • A fetch of an interrupt vector address
  • A fetch when the CPU is in debug mode
  • An interrupt vector fetch