AN4365 datasheet(8/35 Pages) STMICROELECTRONICS

Part #	AN4365

Description	Using STM32F4 MCU power modes with best dynamic efficiency

PDF	35 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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8 / 35 page

STM32F4 power consumption

AN4365

8/35

DocID025303 Rev 2

1.1.2

Power mode power consumptions

Figure 2 summarizes the power consumption of the various power modes of each STM32F4

device.

Figure 2. Current consumption of STM32F4 MCU power modes

Consumptions of both the Run and the Sleep modes depend on the operating frequency.

That is why we find that the dynamic Run mode consumption is presented in Figure 2 by the

ratio µA/MHz at the maximum frequency of each device and when all peripherals are

disabled.

For Run mode, the values are measured when the CoreMark benchmark is executed from

Flash.

The lowest power drain is achieved when both Standby mode and VBAT mode are used. The

Standby mode current is by 2 or 3 µA for all STM32F4 MCUs. The VBAT mode current is less

than 1 µA, dedicated to battery use.

The use of these low-power modes is reinforced by the implementation of various power-

saving features in order to reach a highly optimized consumption.

AN4365 Datasheet(PDF) 8 Page - STMicroelectronics