SLAU723A October 2017 – October 2018 MSP432E401Y , MSP432E411Y
An integrated LDO regulator provides power to most of the internal logic of the microcontroller. Figure 4-4 shows the power architecture. The voltage output has a maximum voltage of 1.2 V. See Section 4.1.6.4 for more information on the LDO operation.
An external LDO may not be used.
NOTE
VDDA must be supplied with 3.3 V, or the microcontroller does not function properly. VDDA is the supply for all of the analog circuitry on the device, including the clock circuitry.