Datasheet

Table Of Contents
18. PM – Power Manager
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39.6.9 Sleep Mode Operation
18.1 Overview
The Power Manager (PM) controls the sleep modes and the power domain gating of the device.
Various sleep modes are provided in order to fit power consumption requirements. This enables the PM
to stop unused modules in order to save power. In active mode, the CPU is executing application code.
When the device enters a sleep mode, program execution is stopped and some modules and clock
domains are automatically switched off by the PM according to the sleep mode. The application code
decides which sleep mode to enter and when. Interrupts from enabled peripherals and all enabled reset
sources can restore the device from a sleep mode to active mode.
The user manually controls which power domains will be turned on and off in standby, hibernate and
backup sleep mode.
In backup and hibernate mode, the PM allows retaining the state of the I/O lines, preventing I/O lines from
toggling during wake-up.
18.2 Features
Power management control
Sleep modes: Idle, Hibernate, Standby, Backup, and Off
SleepWalking available in standby mode.
I/O lines retention in Backup mode
18.3 Block Diagram
Figure 18-1. PM Block Diagram
SLEEP MODE
CONTROLLER
SUPPLY
CONTROLLER
MAIN CLOCK
CONTROLLER
SLEEPCFG
POWER DOMAIN
CONTROLLER
POWER MANAGER
STDBYCFG
POWER LEVEL SWITCHES
FOR POWER DOMAINS
18.4 Signal Description
Not applicable.
18.5 Product Dependencies
In order to use this peripheral, other parts of the system must be configured correctly, as described below.
SAM D5x/E5x Family Data Sheet
PM – Power Manager
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 214