The Definitive Guide to ARM® Cortex®-M3 and Cortex®-M4 Processors, 3rd Edition

Chapter 9

Low Power and System Control Features

Abstract

The first part of this chapter covers the characteristics of low power systems, the low power feature available on the Cortex^®-M processors, and how to utilize the low power feature in application software. The second part of the chapter describes system features including the SysTick timer, self reset and other programmable system control registers.

Keywords

sleep; low power; WFI; WFE; event; Sleep-on-Exit; Wakeup Interrupt Controller (WIC); SysTick; reset; System Control Block (SCB)

Chapter Outline

9.1 Low power designs

9.1.1 What does low power mean in microcontrollers?

9.1.2 Low power system requirements

9.1.3 Low power characteristics of the Cortex^®-M3 and Cortex-M4 processors

Low power ...