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Low-Power SAM L 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.

Start Your New Design With Improved, Enhanced and Lower-Cost PIC32C MCUs


Did you know that PIC32C MCUs, powered by Arm Cortex cores, offer enhanced features and other benefits at up to 60% lower prices than comparable SAM MCUs? They deliver the performance and functionality to meet the requirements of a vast array of embedded designs,

Related Devices: PIC32CM Lx Family


  • Extended memory options of up to 512 KB Flash and 64 KB RAM
  • Higher performance of up to 48 MHz
  • Pin and feature compatible with SAM L MCUs
  • PIC32CM LS60 features integrated ATECC608 secure element in a single in-line package for implementing advanced security
  • Available in 48-, 64- and 100-pin packages

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


Development Tools


Product Description

SAM L11 Xplained Pro Evaluation Kit

Part Number: DM320205

SAM L11 Xplained Pro Evaluation Kit

The SAM L11 Xplained Pro Evaluation Kit allows you to evaluate and prototype 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

SAM L10 Xplained Pro Evaluation Kit

The SAM L10 Xplained Pro Evaluation Kit allows you to evaluate and prototype with 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

SAM L21 Xplained Pro Evaluation Kit

The SAM L21 Xplained Pro Evaluation Kit allows you evaluate and prototype with 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

SAM L22 Xplained Pro Evaluation Kit

The SAM L22 Xplained Pro Evaluation Kit is driven by the ultra-low-power SAM L22 Arm® Cortex®-M0+ microcontroller. The kit includes a TSLCD1 Xplained Pro extension board for touch and segment LCD applications and an ECC508 CryptoAuthentication™ device to enable advanced Elliptic Curve Cryptography (ECC). It is an excellent development platform for secure IoT nodes, wearables, medical and general-purpose battery-powered applications.

Software


MPLAB® X Integrated Development Environment

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 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


Title
AN_42625 - AT10842: Using the Timer Counter for Control Applications in SAM L22 Download
AN_42641 - AT10700: Smart Card Interface using USART ISO7816 in SAM L22 MCU Download
AN_42627 - AT10843: CPU Usage Demonstration Using DMAC of SAM L22 Download
SAM-BA Monitor for ROMless Cortex M Devices - SAM-BA® Monitor for ROMless Cortex Devices Application Note Download
AN_42623 - AT10839: SAM L22 I2C Slave Bootloader Download
AN_42650 - AT10840: SAM-BA Bootloader for SAM L Series Devices Download
AN2465 - SAM D21 SERCOM SPI Configuration Download
AN_42697 - AT13910: ASF Manual (SAM L22) Download
AN_42495 - AT10458: SAM L22 Tamper Detection using RTC Module Download
AN_42256 - AT07058: SAM D10/D11/D21/DA1/R/L/C Timer Counter for Control Applications (TCC) Driver Download
AN_42257 - AT07683: SAM D09/D10/D11/D21/DA1/R/L/C Direct Memory Access Controller (DMAC) Driver Download
AN_42118 - AT03256: SAM D/R/L/C Serial USART (SERCOM USART) Driver Download
AN_42125 - AT03265: SAM D10/D11/D20/D21/R/L/C EEPROM Emulator (EEPROM) Service Download
AN_42121 - AT03262: SAM D/R/L/C System Pin Multiplexer (SYSTEM PINMUX) Driver Download
AN_42126 - AT03266: SAM D/R/L/C RTC Calendar (RTC CAL) Driver Download
AN_42123 - AT03263: SAM D/R/L/C Timer Counter (TC) Driver Download
AN_42122 - AT03261: SAM D/R/L/C System Interrupt (SYSTEM INTERRUPT) Driver Download
AN_42124 - AT03264: SAM D/R/L/C Watchdog (WDT) Driver Download
AN_42114 - AT03247: SAM D/R/L/C Non-Volatile Memory (NVM) Driver Download
AN_42107 - AT03229: SAM D/R/L/C Peripheral Access Controller (PAC) Driver Download
AN_42116 - AT03254: SAM D/R/L/C I2C Slave Mode (SERCOM I2C) Driver Download
AN_42106 - AT03242: SAM D20/D21/D10/D11/DA1/L/C Analog Comparator (AC) Driver Download
AN_42112 - AT03246: SAM D/R/L/C External Interrupt (EXTINT) Driver Download
AN_42108 - AT03245: SAM D/R/L/C Event System (EVENTS) Driver Download
AN_42117 - AT03250: SAM D/R/L/C I2C Master Mode (SERCOM I2C) Driver Download
AN_42111 - AT03249: SAM D/R/L/C RTC Count (RTC COUNT) Driver Download
AN_42113 - AT03248: SAM D/R/L/C Port (PORT) Driver Download
AN_42494 - AT09886: SAM L22 Getting Started Guide Download
AN_42341 - AT09336: USB Device Interface (UDI) for Human Interface Device Mouse (HID Mouse) Download
AN_42342 - AT09337: USB Host Interface (UHI) for Human Interface Device Mouse (HID Mouse) Download
AN_42340 - AT09335: USB Device Interface (UDI) for Human Interface Device Keyboard (HID Keyboard) Download
AN_42343 - AT09338: USB Device Interface (UDI) for Mass Storage Class (MSC) Download
AN_42344 - AT09339: USB Host Interface (UHI) for Mass Storage Class (MSC) Download
AN_42345 - AT09340: USB Device Interface (UDI) for Vendor Class Device Download
AN_42346 - AT09341: USB Host Interface (UHI) for Vendor Class Device Download
AN_42728 - AT15004:Using SAM-BA for Linux on SAM Devices Download
AN_42337 - AT09332: USB Device Interface (UDI) for Communication Class Device (CDC) Download
AN_42339 - AT09334: USB Device Interface (UDI) for Human Interface Device Generic (HID Generic) Download
AN_42338 - AT09333: USB Host Interface (UHI) for Communication Class Device (CDC) Download
AN2709 - Low Power Features of SAM L Series Devices Download
UART Bootloader SAM L10 and L11 Download
Production Programming of Microchip AVR and SAM Microcontrollers Download
AT09331: ASF USB Stack Manual Download
AN_42382 - AT04056: Getting Started with FreeRTOS on SAM Flash MCUs Download
AN2722 - Getting Started With SAM L10 / L11 Xplained Pro Application Note Download
CPU Usage Demonstration Using DMAC for SAM L10 MCUs Application Note Download
OPAMP as ADC Gain Amplifier for SAM L10 MCUs Application Notes Download
Low-Power Touch Design Download
EMI, EMC, EFT, and ESD Circuit Design Consideration for 32-bit Microcontrollers Application Note Download
AN_42419 - AT03716: Implementation of SAM L Configurable Custom Logic (CCL) Peripheral Download
AN_42451 - AT11380: SAM L/C Analog-to-Digital Converter (ADC) Driver Download
AN_42506 - AT13481: SAM L22/C21/C20 Frequency Meter (FREQM) Driver Download
AN_42605 - AT13155: SAM L22 Segment Liquid Crystal Display(SLCD) Controller Download
AN_42445 - AT10747: SAM L Advanced Encryption Standard (AES) Driver Download
AN_42453 - AT11512: SAM L Brown Out Detector (BOD) Driver Download
AN_42551 - AT13886: SAM L22 System Clock Management (SYSTEM CLOCK) Driver Download
AN_42438 - AT09423: SAM-BA Overview and Customization Process Download
AN_42499 - AT09192: SAM L22 Segment Liquid Crystal Display (SLCD) Controller Download
Secure Bootloader_SAML11 Download
SAM L11 Security Reference Guide Application Note Download
Title
32-bit MCU Brochure Download
32-bit Microcontroller Collateral and Solutions Reference Guide Download
Title
SAM L22 Family Data Sheet Download
SAM L21 Family Data Sheet Download
Title
SAM L21 Family Silicon Errata and Data Sheet Clarification Download
SAM L22 Family Silicon Errata and Data Sheet Clarification Download
Title
Basic 32-Bit MCU Design and Troubleshooting Checklist Download
Title
Dual Developer Application Development Use Case with TrustZone on SAM L11 Using MPLAB Harmony v3 Download
The Difference Between MPLAB Harmony v3 PLIBs and Drivers, and When to Use Them Download
How to Setup MPLAB Harmony v3 Software Development Framework Download
ADC Sequencing Using DMA and EVENT System on PIC32C and SAM MCUs Using MPLAB Harmony v3 and MCC Download
Ultra-Low Power Techniques Tech Brief Download

Microchip Bootloaders


Bootloaders are used to upgrade firmware on a target device without using an external programmer or debugger. Commonly used with microcontrollers (MCUs), a bootloader contains code that loads and executes an application program. Bootloaders can also perform additional tasks such as validating the code integrity and authenticity.

Bootloaders

 SAM L Videos Playlist

The 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 peripherals, 12-bit analog, built in op amps and much more.