Datasheet

For decoupling recommendations for the different power supplies. Refer to Schematic Checklist for

details.

Related Links

42. Schematic Checklist

8.2.2 Voltage Regulator

The voltage regulator has two different modes:

• Normal mode: To be used when the CPU and peripherals are running

• Low Power (LP) mode: To be used when the regulator draws small static current. It can be used in

standby mode

8.2.3 Typical Powering Schematics

The device uses a single main supply with a range of 1.62V - 3.63V.

The following figure shows the recommended power supply connection.

Figure 8-1. Power Supply Connection

(1.62V — 3.63V)

Main Supply

VDDIO

VDDANA

VDDIN

VDDCORE

GND

GNDANA

DEVICE

8.2.4 Power-Up Sequence

8.2.4.1 Minimum Rise Rate

The integrated Power-on Reset (POR) circuitry monitoring the VDDANA power supply requires a

minimum rise rate. Refer to the Electrical Characteristics for details.