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Setting a New Low-Power Benchmark for Arm® Cortex®-M23 and Cortex-M0+ Based Microcontrollers

With the huge growth of the Internet of Things (IoT) and the widespread use of wearables and low-power accessories, designers increasingly need lower-power solutions that also offer robust security and touch interfaces. Our SAM L family of microcontrollers (MCUs) is built with innovative picoPower® technology to deliver best-in-class low power consumption down to 25 µA/MHz in active mode, under 100 nA in sleep mode and fast wake-up times of 1.2 uS. These MCUs have achieved an EEMBC-certified ULPMark™ score of 410, which is the highest score for an Arm® Cortex®-M23 or Cortex-M0+ class device. In addition to ultra-low-power capabilities, these devices feature an enhanced Peripheral Touch Controller (PTC), robust security, Arm TrustZone® technology, Advanced Encryption Standard (AES) encryption, Full-Speed USB host and device, Event System and SleepWalking, 12-bit analog, built in op amps and much more. Discover how you can use the SAM L series of MCUs to expand battery life from years to decades, add elegant touch capabilities to your product and secure your IoT nodes.

Key Features


picoPower Technology: Devices are designed to offer 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. These devices can operate down to 1.62V while still maintaining all functionality, including analog functions. They have a short wake-up time, with multiple wake-up sources from even the deepest sleep modes. They utilize low leakage processes and libraries to deliver industry-leading low power consumption in active and all sleep modes.

QTouch® Technology Peripheral Touch Controller (PTC): This technology offers built-in hardware support for buttons, sliders, wheels, surfaces and proximity detection. It supports both mutual- and self-capacitive touch without the need for external components. It offers superior water tolerance, excellent sensitivity, faster response times and high noise immunity, as well as self-calibration, making any user tuning unnecessary.

Robust Security: Offers tamper resistance, Arm TrustZone technology, secure boot, secure bootloader, AES encryption, key storage, root of trust, hardware identity, True Random Number Generator (TRNG) and secure debug.

Peripheral Flexibility: An innovative serial communication module (SERCOM) is fully software-configurable to handle I2C, USART/UART and SPI communications. With multiple SERCOM modules on a device, you can tailor the peripheral mix precisely to your application. The I2C interface can operate at up to 3.4 MHz. PMBus and SMBus are also supported. The SAM L22, SAM L10, and SAM L11 also support the ISO7816 interface.

Direct Memory Access (DMA): The SAM L family features a 16-channel DMA controller supporting both memory and peripheral data transfers.

Full Speed USB: The SAM L21 family supports both USB embedded host and USB device modes, while the SAM L22 family supports Full Speed USB device mode. Full Speed USB is supported in device mode using an internal RC oscillator, reducing BOM cost and design complexity.

Scalability: Flash memory densities range from 16 KB to 256 KB and up to 40 KB of SRAM and devices come in packages as small as 2.8 × 2.8 mm and ranging from 24- to 100-pin options.

SAM L10

A rich set of peripherals, flexibility and ease of use combined with lowest power consumption in its class, and an enhanced Peripheral Touch Controller (PTC) make the industry’s first Arm Cortex-M23 based microcontrollers ideal for IoT devices, wearables, appliances, low-power industrial applications, metering, battery-powered accessories and general-purpose embedded control. Offering identical peripheral modules, compatible code and a linear address map, the SAM L10 family is designed for simple and intuitive migration between SAM L devices. It is also compatible with the SAM D family of general-purpose MCUs.

  • Arm Cortex-M23 based MCU running up to 32 MHz
  • Up to 64 KB embedded Flash and 16 KB SRAM
  • Ultra-low active and sleep currents of < 25 µA/MHz and < 100 nA
  • Enhanced PTC with Driven Shield Plus and Parallel Acquisition
  • DMA, Sleepwalking and Event System
  • Up to three flexible serial communication modules (SERCOMs)
  • Three timers/counters
  • 12-bit Analog-to-Digital Converter (ADC) with up to 10 channels and 10-bit Digital-to-Analog Converter (DAC)
  • Three op amps, two analog comparators and programmable logic block
  • TQFP, SSOP, QFN and WLCSP package options
  • Temperature options: −40°C to 85°C and −40°C to 125°C

SAM L11/SAM L11-KPH

As the industry’s first and lowest-power MCUs to feature robust chip-level security and Arm TrustZone technology, the SAM L11 family is ideal for securing IoT nodes for smart cities, home automation, smart agriculture and asset tracking applications. These MCUs also provide secure key storage and authentication capabilities to enable accessory authentication and IP protection. The SAM L11 family is designed for simple and intuitive migration between SAM L devices, offering identical peripheral modules, compatible code and a linear address map. It is also compatible with the SAM D family of general-purpose MCUs.

The SAM L11-KPH includes a factory-provisioned root of trust (key) and Kinibi-M™ Trusted Execution Environment (TEE) to provide an immutable identity for secure application development.

  • Arm Cortex-M23 based MCU running up to 32 MHz
  • Up to 64 KB embedded Flash and 16 KB SRAM
  • Arm TrustZone technology
  • Secure boot and secure bootloader
  • Crypto accelerators
  • Secure debug
  • Ultra-low active and sleep currents of < 25 µA/MHz and < 100 nA
  • Enhanced Peripheral Touch Controller (PTC) with Driven Shield Plus and Parallel Acquisition
  • DMA, Sleepwalking and Event System
  • Up to three flexible serial communication modules (SERCOMs)
  • Three timers/counters
  • 12-bit ADC, 10-bit DAC and three op amps
  • Two analog comparators and programmable logic block
  • TQFP, SSOP, QFN and WLCSP package options
  • Temperature Options: −40°C to 85°C and −40°C to 125°C

SAM L21

A rich set of peripherals, flexibility and ease-of-use combined with ultra-low power consumption make the SAM L21 Arm Cortex-M0+ based microcontroller series ideal for IoT devices, wireless products and any system that needs large memories and low power consumption. The SAM L21 is designed for simple and intuitive migration between SAM L devices, offering identical peripheral modules, compatible code and a linear address map. It is also compatible with the SAM D family of general-purpose MCUs.

  • Arm Cortex-M0+ based MCU running up to 48 MHz
  • Up to 256 KB embedded Flash and 40 KB SRAM
  • Low power consumption at < 35 µA/MHz
  • DMA, Sleepwalking and Event System
  • Up to six flexible serial communication modules (SERCOMs)
  • Up to eight timers/counters
  • Full Speed USB device and embedded host
  • 12-bit ADC with up to 20 channels and 12-bit two-channel DAC
  • Three op amps, two analog comparators and programmable logic block
  • Peripheral Touch Controller (PTC) for hardware touch support
  • QFP, QFN and WLCSP package options

SAM L22

SAM L22 Arm Cortex-M0+ based microcontrollers offers a rich set of peripherals, flexibility and ease of use, combined with ultra-low power consumption for IoT devices, Human-Machine Interfaces (HMIs), building automation, smart metering, wireless products, and any system that needs a segmented LCD controller, large memories and low power consumption. The SAM L22 family is designed for simple and intuitive migration between SAM L devices, offering identical peripheral modules, compatible code and a linear address map. The SAM L22 is also compatible with the SAM D family of general-purpose MCUs.

  • Arm Cortex-M0+ based MCU running up to 32 MHz
  • Up to 256 KB embedded Flash and 32 KB SRAM
  • Low power consumption at < 39 µA/MHz
  • Segmented LCD (SLCD) controller with up to 320 segments
  • DMA, Sleepwalking and Event System
  • Up to six flexible serial communication modules (SERCOMs)
  • Up to five timers/counters
  • Full Speed USB device
  • 12-bit ADC with up to 20 channels
  • Two analog comparators and programmable logic block
  • Peripheral Touch Controller (PTC) for hardware touch support
  • Tamper detection
  • QFP, QFN and WLCSP package options

SAM L Microcontrollers


View All Parametrics
Product FunctionalSafetyReady CPU Type MaxSpeed (MHz) Program Memory Size (KB) RAM (KB) Hardware Touch Peripheral
ATSAML10D14A No Cortex-M23 32 16 4 PTC
ATSAML10D15A No Cortex-M23 32 32 8 PTC
ATSAML10D16A No Cortex-M23 32 64 16 PTC
ATSAML10E14A No Cortex-M23 32 16 4 PTC
ATSAML10E15A No Cortex-M23 32 32 8 PTC
ATSAML10E16A No Cortex-M23 32 64 16 PTC
ATSAML11D14A No Cortex-M23 32 16 8 PTC
ATSAML11D15A No Cortex-M23 32 32 8 PTC
ATSAML11D16A No Cortex-M23 32 64 16 PTC
ATSAML11E14A No Cortex-M23 32 16 8 PTC
ATSAML11E15A No Cortex-M23 32 32 8 PTC
ATSAML11E16A No Cortex-M23 32 64 16 PTC
ATSAML21E15B No Cortex-M0+ 48 32 6 PTC
ATSAML21E16B Yes Cortex-M0+ 48 64 12 PTC
ATSAML21E17B No Cortex-M0+ 48 128 24 PTC
ATSAML21E18B Yes Cortex-M0+ 48 256 40 PTC
ATSAML21G16B No Cortex-M0+ 48 64 12 PTC
ATSAML21G17B Yes Cortex-M0+ 48 128 24 PTC
ATSAML21G18B Yes Cortex-M0+ 48 256 40 PTC
ATSAML21J16B No Cortex-M0+ 48 64 12 PTC
ATSAML21J17B Yes Cortex-M0+ 48 128 24 PTC
ATSAML21J18B Yes Cortex-M0+ 48 256 40 PTC
ATSAML22G16A No Cortex-M0+ 32 64 8 PTC
ATSAML22G17A No Cortex-M0+ 32 128 16 PTC
ATSAML22G18A No Cortex-M0+ 32 256 32 PTC
ATSAML22J16A No Cortex-M0+ 32 64 8 PTC
ATSAML22J17A No Cortex-M0+ 32 128 16 PTC
ATSAML22J18A No Cortex-M0+ 32 256 32 PTC
ATSAML22N16A No Cortex-M0+ 32 64 8 PTC
ATSAML22N17A No Cortex-M0+ 32 128 16 PTC
ATSAML22N18A No Cortex-M0+ 32 256 32 PTC

Development Tools


Product Description

SAM L11 Xplained Pro Evaluation Kit

Part Number: DM320205

The SAM L11 Xplained Pro evaluation kit is ideal for evaluating and prototyping with ultra-low power SAM L11 ARM® Cortex®-M23 based microcontrollers featuring chip-level security and ARM® TrustZone® Technology. The kit is supported by various demo examples to get started with and features mikroBUS™ socket and Xplained Pro extension headers to expand your development further with MikroElektronika click boards and Xplained Pro extension kits 

SAM L10 Xplained Pro Evaluation Kit

Part Number: DM320204

The SAM L10 Xplained Pro evaluation kit is ideal for evaluating and prototyping with the ultra-low power SAM L10 ARM® Cortex®-M23 based microcontrollers. The kit is supported by various demo examples to get started with and features mikroBUS™ socket and Xplained Pro extension headers to expand your development with MikroElektronika click boards and Xplained Pro extension kits

SAM L21 Xplained Pro Evaluation Kit

Part Number: ATSAML21-XPRO-B

The SAM L21 Xplained Pro evaluation kit is ideal for evaluating and prototyping with the ultra low power SAM L21 ARM® Cortex®-M0+ based microcontrollers. Xplained Pro extension kits that are compatible with SAM L21 Xplained Pro can be purchased individually.

SAM L22 Xplained Pro Evaluation Kit

Part Number: ATSAML22-XPRO-B

The SAM L22 Xplained Pro evaluation kit is driven by the ultra-low power SAM L22 ARM® Cortex®-M0+ microcontroller . The kit includes TSLCD1 Xplained Pro extension board for touch & segment LCD applications  and ECC508 Crypto Authentication device to enable advanced elliptic curve cryptography (ECC). It is an ideal development platform for secure IoT nodes, wearables, medical & general purpose battery powered applications.

Software


MPLAB® X Integrated Development Environment (IDE)

MPLAB X Integrated Development Environment (IDE) is an expandable, highly configurable software program that incorporates powerful tools to help you discover, configure, develop, debug and qualify embedded designs for most of Microchip’s microcontrollers and digital signal controllers. MPLAB X IDE works seamlessly with the MPLAB development ecosystem of software and tools, many of which are completely free. 

MPLAB Harmony v3 Software Framework

MPLAB Harmony v3 is a flexible, fully integrated embedded software development framework for 32-bit microcontrollers (MCUs). It enables robust framework development of interoperable RTOS-friendly libraries with quick and extensive Microchip support for third-party software integration. MPLAB Harmony includes a set of peripheral libraries, drivers and system services that are readily accessible for application development. The code development format allows for maximum re-use and reduces time to market.

Documentation


How to Set-up the Tools Required to Get Started with MPLAB® Harmony v3

This video helps to set-up the tools required to get started with MPLAB® Harmony v3. It is a step-by-step guide explaining:
• How to Download & Install MPLAB® X Integrated Development Environment (IDE)
• How to Download & Install MPLAB® XC32 Compiler
• How to install the MPLAB Harmony Configurator (MHC)
• How to Download MPLAB Harmony Framework from Harmony 3 GitHub Repo

Some key benefits of MPLAB® Harmony v3 include:
• Core agnostic implementation which supports both MIPS® and Arm® Cortex® core architectures
• Code portability with consistent APIs that can be used across different device families
• Easily configurable using MPLAB Harmony Configurator’s (MHC’s) Graphical User Interface (GUI)
• Optimized peripheral libraries to simplify device setup and peripheral usage
• Modular software downloads and updates available through GitHub for better installation and configuration management
• Offers same great middleware
• Default integration with FreeRTOS and capable of supporting other Real-Time Operating Systems (RTOSes)
• Supports multiple development models with application examples and demos
• Offers 1000+ demo/application examples