8 Power Supplies and Startup Considerations

Table 8-1. External Power Supply Pins
Name	Associated Ground	Powers
AVDD	AVSS	Supplies power to the pSWITCH (in the DS SMOR), SMOR, ADCCOREn, ACDACn, ACCOREn, PTC, PLL, XOSC, DFLL48M and analog I/Os. (Nominal range: 1.71V-3.63V, must be within 300 mv of VDDIO)
VDDIO	VSSIO	Powers I/Os. (Nominal range: 1.71V-3.63V, with respect to VSSIO)
VDDREG	VSSCORE	Powers all internal regulators except for the LPVREGC. (Nominal range: 1.71V-3.63V, cannot exceed VDDIO)

Note: VDDA and AVDD are used interchangeably throughout this document.

DS60001921A

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