Device Configuration Registers

All Microchip microcontrollers use nonvolatile configuration registers that define basic device behavior. These registers reside in Flash and can only be programmed when the device is programmed. Some of these settings can also be changed during run time. Please see the device data sheet for details.

Here are some examples of the basic behavior determined by these registers:

  • Device clock source selection
  • Device clock configuration
  • PLL configuration
  • Watchdog timer enable/disable
  • Code protect on/off
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