STM32WBA62CGF6 datasheet(29/185 Pages) STMICROELECTRONICS

29 / 185 page

DS14736 Rev 1

29/185

STM32WBA6xxx

Functional overview

–

Voltage regulator (LDO)

•

Power supply supervision

–

BOR monitor

–PVD monitor

•

Power management

–

Operating modes

–

Voltage scaling control

–

Low-power modes

•

TrustZone security and privilege protection

3.12.1

Power supply schemes

The devices require a 1.71 to 3.6 V VDD operating voltage supply. Several independent

supplies can be provided for specific peripherals:

•

VDD = 1.71 to 3.6 V (functionality guaranteed down to VBORx minimum value)

External power supply for the I/Os, the internal regulator, the system analog such as

reset, power management, and internal clocks, and the backup domain. It is provided

externally through the VDD pins. VDDRF must be connected to the same supply used

for VDD.

•

VDDIO2 = 1.08 to 3.6 V

External power supply for 14 I/Os (GPIOG[15:2]). The VDDIO2 voltage level is

independent from the VDD voltage and must be connected to VDD (preferably) or to

VSS pin when these I/Os are not used.

•

VDDA = 1.58 (COMP) / 1.62 (ADC) to 3.6 V

External analog power supply for ADC and comparators. The VDDA voltage level is

independent from the VDD voltage and must be connected to VDD (preferably) or to

VSS pin when these peripherals are not used.

•

VREF+

Reference voltage for the ADC. It is also the output of the internal voltage reference

buffer (VREFBUF) when enabled. The VREF+ can be connected to VSS pin when ADC

and VREFBUF are not used. The VREF+ pin is not available on all packages, when not

available, it is bonded to VDDA.

•

VDDUSB = 3.0 to 3.6 V

External power supply for the USB OTG transceiver. It is provided externally through

the VDDUSB pin. The VDDUSB voltage level is independent from the VDD voltage and

must be connected to VDD (preferably) or to VSS pin when the USB OTG is not used.

•

VDDSMPS = 1.71 to 3.6 V

External power supply for the SMPS step down converter. It is provided externally

through VDDSMPS supply pin, and must be connected to the same supply as VDD.

•

VLXSMPS is the switched SMPS step down converter output.

The SMPS power supply pins are available only on a specific package with SMPS

step-down converter option.

•

VDDRF = 1.71 to 3.6 V

External power supply for the 2.4 GHz RADIO, it must be connected to the same

supply used for VDD.

•

VDDANA = 0 to 3.6 V (must be ≥ 1.2 V for 2.4 GHz RADIO operation)

STM32WBA62CGF6 Datasheet(PDF) 29 Page - STMicroelectronics

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