30.5 On-Chip Voltage Regulators
dsPIC33CK512MPT608 family devices have a capacitorless internal voltage regulator to supply power to the core at 1.2V (typical).
The regulators have Low-Power and Standby modes for use in Sleep modes. For additional information about Sleep, see Sleep Mode.
When the regulators are in Low-Power mode (LPWREN = 1
),
the power available to the core is limited. Before the LPWREN bit is set, the device should
be placed into a Lower Power state by disabling peripherals and lowering CPU frequency
(e.g., 8 MHz FRC without PLL).