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World-Class, Award-Winning SAM L10 and L11 Microcontroller Family

Industry’s Lowest Power 32-bit MCUs, First to Offer Chip-Level Security and Arm® TrustZone® Technology

With the increasing growth of IoT end points and, consequently, the increased frequency of security breaches, designers are looking for MCUs that can help reduce power consumption while adding robust security. The SAM L10 and L11 MCU family takes an innovative approach to solving these challenges by integrating a wide variety of peripherals, including security features, into the industry's lowest power MCU in its class. This allows you to develop secured applications without the battery constraints of less power-efficient MCUs. These MCUs run at 32 MHz with memory configuration of up to 64 KB Flash and 16 KB SRAM. They come in two variant options: SAM L10 and SAM L11 and boast ultra-low power consumption as well as an enhanced Peripheral Touch Controller and advanced analog features. The SAM L11 variant adds integrated hardware security. They both come in 24- and 32-pin package options and are targeted for use in IoT and security, low power, capacitive touch and general purpose embedded control applications.

Robust Security

SAM L11 MCUs integrates chip-level security and ARM® TrustZone® technology to help protect from both physical and remote attacks. They are supported by a comprehensive security solution framework to simplify the implementation of security. IoT nodes driven by a SAM L11 provide strong resistance to remote software attacks thereby increasing the reliability and avoiding downtime of the critical functions of the nodes. The combination of security offered by TrustZone for ARMv8-M and additional hardware-enforced security will help protect from cloning and intellectual property theft.

  • Secure boot
  • Chip-level tamper resistance on 256 Bytes of RAM
  • ARM TrustZone
  • TRNG
  • Crypto accelerators: AES, SHA & GCM
  • Secure key storage
  • Secure pin multiplexing
  • Secure debug
  • Tamper pins for chip-level tamper resistance

Industry’s Lowest Power

Create extremely power-efficient designs with the SAM L10 and SAM L11, the industry’s lowest power MCUs in their class with an EEMBC certified ULPMark of 410. They are built with picoPower® technology and provide flexible power saving modes. They are supported with power debugging and data visualizer tools to monitor and analyze power consumption in real time. This helps developers to rapidly optimize their system design for lower power consumption with significant improvements in battery life.

  • picoPower® technology
  • Under 25 uA/MHz active 
  • Under 100 nA Sleep
  • Fast wake up times: 1.5 μS
  • SleepWalking peripherals
  • Dual performance levels
  • Power domain gating
  • Event system
  • Power debugger & data visualizer tool support

Superior Capacitive Touch

Incorporate capacitive touch interfaces in your applications with these MCUs which feature an enhanced Peripheral Touch Controller (PTC), offering best-in-class water tolerance and high noise immunity. It is four times faster than the previous generation of PTC and provides highly-responsive and accurate touch sensing. It is supported by the QTouch Configurator and QTouch® Modular Library which make it simple to add elegant touch interfaces to your applications.

  • Enhanced peripheral touch controller
  • Driven shield plus 
  • Parallel acquisition
  • Buttons, wheels, sliders and surfaces
  • Highly-responsive and accurate
  • Ultra-low power
  • Wake-up on touch
  • IEC/EN 61000 4-6, 10 V rms
Robust Chip-Level Security & Arm TrustZone

IoT nodes driven by SAM L11 provide strong resistance to remote software attacks and tampering thereby increasing the node’s reliability and avoiding downtime of critical functions.

Robust Chip-Level Security

SAM L11 MCUs were created with security deeply embedded during the silicon design phase. This robust security includes chip-level tamper resistance on 256 bytes of RAM, Boot ROM design to facilitate secure boot, NIST compliant TRNG and FIPS compliant AES and secure key storage using scrambling on data Flash, active shield and scrambling on 256 bytes of RAM and Arm TrustZone technology. It provides physical attack protection with active shield on 256 bytes of RAM to resist microprobing.

Arm TrustZone Technology

The SAM L11 incorporates Arm TrustZone technology to protect against remote software attacks. Arm TrustZone divides the MCU into trusted and non-trusted zones and provides a hardware isolation to protect keys and sensitive information from non-trusted zones.

A Comprehensive Security Solution Framework

SAM L11 MCUs are supported by a comprehensive security solution framework that offers end-to-end solution from secure key provisioning to cloud onboarding to complete device lifecycle management. It is aimed at significantly reducing the developer’s effort while making the applications more secure with faster time to market.

Securely provisioned SAM L11 embeds Trustonic’s Root of Trust (RoT) during the silicon manufacturing to work with Kinibi-M software. The Kinibi-M abstracts away the lower level details of SAM L11’s hardware security to provide a modular approach through a graphical user interface.


Microchip has also partnered with Secure Thingz and Data I/O Corporation to offer secure key provisioning services for SAM L11 customers that have a proven security framework.

Comprehensive Security Solution Framework simplifies integrating security to your embedded design.

Security Threats and SAM L11’s Counter-Measures
SAM L11 Security Use Cases
180607-MC32-DIAG-SAM-L1011-IoTnode-7x5 180607-MC32-DIAG-SAM-L1011-AccessoryAuthentication-7x5 180607-MC32-DIAG-SAM-L1011-SecureRemoteKeypad-7x5-corrected 180607-MC32-DIAG-SAM-L1011-Encription-7x5
picoPower Technology & Low Power Techniques

Devices with picoPower technology, such as the SAM L10 and SAM L11 MCUs, are designed for the lowest possible power consumption from transistor design and process geometry, sleep modes, flexible clocking options, on-the-fly user selectable performance levels, event system to SleepWalking peripherals. This technology provides flexible power-saving techniques that enable the creation of designs with longer battery lives and lower total system costs.

Power Saving Techniques Benefits
SleepWalking Ability of the peripherals to perform a task without waking up the Central Processing Unit (CPU) from the sleep mode to maintain low power for an extended period
Power Domain Gating Unused power domain can be switched off to reduce the sleep currents even further
Dual Performance Levels (PL0 & PL2) Ability to change the CPU speed on the fly to suit the application activity level. Helps strike a balance between power and performance when in active mode.
Event System Inter-peripheral communication which reduces CPU overhead and saves CPU cycles
Integrated, Low-Power Analog
(Op Amps, ADC, AC, DAC)
Reduces BOM
Can take inputs from sensors when in sleep


Capacitive Touch: Superior water tolerance, noise immunity and responsiveness

Add superior capacitive touch interfaces to your application with the SAM L10/11 family. These MCUs offer an enhanced Peripheral Touch Controller (PTC) with Driven Shield Plus and Parallel Acquisition allowing you to differentiate your designs with exceptional touch-based capabilities.

Driven Shield Plus

Driven Shield Plus offers best in class water tolerance and noise immunity. It enables touch for products in dew, sweat, rain and even running water. It can also be designed in to products that are IP-68 rated. It supports touch surfaces with pinch and zoom capabilities in the presence of water.

Parallel Acquisition

Parallel acquisition improves the responsiveness of the touch interface by acquiring multiple touch sensors simultaneously as opposed to the traditional way of acquiring them sequentially. This makes the PTC on SAM L10/11, four times faster than the previous generation of PTCs. It also filters out noise and significantly improves responsiveness of high button count touch interfaces.

The PTC on SAM L10/11 offers superior noise mitigation techniques and easily passed IEC/EN 61000-4-6 10V rms industry standard conducted immunity noise tests.

Rich Development Ecosystem
IDE Atmel Studio 7
IAR Embedded Workbench
Arm® Keil® MDK
SEGGER Embedded Studio
Software Framework Atmel START
Atmel START TrustZone Manager
Security Framework Trustonic End-to-End Solution Support
Secure Thingz Key Provisioning
SEGGER emCrypt crypto-library
Low Power Power Debugger
Data Visualizer
Touch QTouch Configurator
QTouch Modular Library
2D Touch Surface Library


Target Applications
IoT and Security Low Power  Capacitive Touch
  • Smart cities
  • Home automation
  • Industrial automation
  • Smart agriculture
  • Medical devices
  • Accessories authentication
  • Wearables
  • Gaming controls
  • Energy harvesting
  • Smart pens
  • Low power industrial
  • Sensor nodes
  • Appliances
  • Fitness trackers
  • Automotive door handles
  • Steering wheel controls
  • Key pads
  • Remote controls


Get Started

The SAM L10 and SAM L11 Xplained Pro Evaluation Kits are available to kick-start development. These are fully supported with security, low-power and touch demos to accelerate development and get to market faster!

All SAM L10/L11 MCUs are supported by the Atmel Studio 7 Integrated Development Environment (IDE), IAR Embedded Workbench, Arm Keil® MDK as well as Atmel START, a free online tool to configure peripherals and software that accelerates development. START also supports Arm TrustZone technology to configure and deploy secure applications. A power debugger and data analyzer tool is available to monitor and analyze power consumption in real-time and fine tune the consumption numbers on the fly to meet application needs. Microchip’s QTouch® Modular Library, 2D Touch Surface Library and QTouch Configurator are also available to simplify touch development.

Demo Name

Demo Code Location

Trusted Execution Environment


Cloud Enrollment with Kinibi-M

Contact Microchip local sales for availability

Ultra Low Power Secure LoRa IoT Node

App Note – AN2835

Low power weather station


Low power SleepWalking


Water tolerant touch with QT7 Extension


Low power keypad touch with QT3 Extension