Infineon PSoC 4000S Manual

AN86233
PSoC™ 4 MCU low-power modes and power
reduction techniques

About this document

Scope and purpose
AN86233 discusses how to use the PSoC™ 4 MCU low-power modes and features to operate at very low power
levels while retaining essential functionality. Major topics include the five power modes, PSoC™ Creator power
management functions, and other power-saving techniques and considerations. Three PSoC™ Creator example
projects are included to demonstrate various aspects of low-power programming.
Note: PSoC™ Creator supports all PSoC™ 4 devices, but ModusToolbox™ software supports PSoC™
4S-series devices only. Supported devices are 4000S, 4100S,
max, and 4500s.
Intended audience
This application note is for anyone who uses PSoC™ 4 MCU devices.

Table of contents

About this document ....................................................................................................................... 1
Table of contents ............................................................................................................................ 1
1 Introduction .......................................................................................................................... 3
2 Power mode summary ............................................................................................................ 4
3 Low-power mode details ......................................................................................................... 6
3.1 Sleep mode .............................................................................................................................................. 6
3.1.1 Sleep mode wakeup sources ............................................................................................................. 6
3.1.2 Sleep mode transitions ...................................................................................................................... 7
3.1.3 Sleep mode use cases ........................................................................................................................ 7
3.2 Deep sleep mode ..................................................................................................................................... 7
3.2.1 Deep sleep mode wakeup sources .................................................................................................... 7
3.2.2 Deep sleep mode transitions ............................................................................................................. 7
3.2.3 Peripheral deep sleep configuration ................................................................................................. 8
3.2.4 Deep sleep mode use cases ............................................................................................................... 8
3.3 Hibernate mode with PSoC™ Creator ..................................................................................................... 8
3.3.1 Hibernate mode wakeup sources ...................................................................................................... 8
3.3.2 Hibernate mode transitions ............................................................................................................... 9
3.3.3 Hibernate mode use cases ................................................................................................................. 9
3.4 Stop mode with PSoC™ Creator .............................................................................................................. 9
3.4.1 Stop mode wakeup sources ............................................................................................................ 10
3.4.2 Stop mode transitions ..................................................................................................................... 10
3.4.3 Stop mode use cases........................................................................................................................ 10
4 Power mode wakeup summary ............................................................................................... 11
5 Power reduction techniques ................................................................................................... 12
5.1 Turn OFF peripherals in ModusToolbox™ software ............................................................................. 12
Application Note
www.infineon.com
Please read the Important Notice and Warnings at the end of this document
4100S
page 1 of 38
plus, 4100S plus 256KB, 4100S
001-86233 Rev. *I
2021-11-04