SAM L10/L11 Sleep Modes

Sleep Mode Overview

The SAM L10/L11 have three Sleep modes available through the Power Manager (PM), as summarized below:


Each sleep mode offers different flexibility and capability for the device to wake-up. The figure below shows the resultant device status across all Sleep modes:


Related Peripherals

A related peripheral that controls Sleep modes is the Power Manager.

Sleep Mode Selection

After a device reset, the device is operating at Performance Level 0 (PL0), in Active mode.


While the performance level selection is done through the selection bits in the Performance Level Configuration register (PLCFG.PLSEL), the Sleep Mode configuration bits are in the Sleep Configuration register (SLEEPCFG.SLEEPMODE). These bits are used to select the level of the Sleep mode.

There is a small latency between the store instruction and actual writing of the SLEEPCFG register due to bridges. The software must ensure that the SLEEPCFG register reads the desired value before issuing a Wait For Interrupt (WFI) instruction.

Sleep mode is then entered by executing the WFI instruction.

Code Example: Configuring the device in STANDBY sleep mode allowing the device to get the best power efficiency

Related Sections

Power Manager
Learn more >
SAM L10/L11
Learn more >
© 2024 Microchip Technology, Inc.
Notice: ARM and Cortex are the registered trademarks of ARM Limited in the EU and other countries.
Information contained on this site regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.