NRF52810-QCAA-R datasheet(55/483 Pages) NORDIC

55 / 483 page

5 Power and clock management

5.1 Power management unit (PMU)

Power and clock management in nRF52810 is designed to automatically ensure maximum power

efficiency.

The core of the power and clock management system is the power management unit (PMU) illustrated in

Power management unit on page 55.

MCU

Internal

voltage

regulators

External

power sources

External

crystals

Internal

oscillators

PMU

CPU

Memory

Peripheral

Figure 8: Power management unit

The PMU automatically detects which power and clock resources are required by the different

components in the system at any given time. It will then start/stop and choose operation modes in supply

regulators and clock sources, without user interaction, to achieve the lowest power consumption possible.

5.2 Current consumption

As the system is being constantly tuned by the Power management unit (PMU) on page 55,

estimating the current consumption of an application can be challenging if the designer is not able to

perform measurements directly on the hardware. To fascilitate the estimation process, a set of current

consumption scenarios are provided to show the typical current drawn from the VDD supply.

Each scenario specifies a set of operations and conditions applying to the given scenario. Current

consumption scenarios, common conditions on page 56 shows a set of common conditions used in

all scenarios, unless otherwise is stated in the description of a given scenario. All scenarios are listed in

Electrical specification on page 56

4430_161 v1.0

NRF52810-QCAA-R bảng dữ liệu(PDF) 55 Page - Nordic Semiconductor