SWCU193 April 2023 CC2340R2 , CC2340R5 , CC2340R5-Q1
The two VDDR (regulated) pins are normally powered from one of the internal regulators. VDDR operates at 1.5 V. For lowest power, TI recommends using the internal DC/DC regulator. Using the Global LDO is also an option. See Section 6.3.1 for further details on this configuration.