2.2.2 Implementation Example

The low cost and space saving option to power the SAM9X75 is the MCP16501 PMIC. The current implementation introduces an MCP16501TA-E/RMB schematic configured to supply all necessary power rails⁽¹⁾ in the recommended sequence:

3.3V to the periphery group (default V_OUT1 output)
1.15V to the MPU core (by leaving pin SELV3 floating in Hi-Z)
1.35V to the VDDIOM rail (by leaving pin SELV2 floating in Hi-Z)

Note:

Except for VDDBU, which can be connected to a non-removable power source such as a 3V lithium battery or directly to 3.3V.

Figure 2-3. Power Management Integrated Circuit

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