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Overview
- Part Family:SAML21
- CPU Type:Cortex-M0+
- MaxSpeed (MHz):48
- Program Memory Size (KB):256
- SRAM (KB):40
- Temp. Range Min.:-40
- Temp. Range Max.:105
- Operation Voltage Min.(V):1.62
- Operation Voltage Max.(V):3.63
- SPI:6
- I2C:6
- UART:6
- QSPI:0
- Crypto Engine:Yes
- Internal Oscillator:32Khz ULP, 16Mhz
- Pin Count:64
- Secure Boot:No
- ARM Cortex-M0+ CPU running at up to 48MHz
- 256KB in-system self-programmable Flash
- 8KB Flash Read-While-Write section
- 32KB SRAM Main Memory
- 8KB SRAM Low power Memory
- Operating voltage: 1.62V – 3.63V
- Ultra Low Power Architecture consuming under 35uA/MHz in Active mode
- Idle, Standby, Backup, and Off sleep modes
- Battery backup support
- Two Performance Levels
- Embedded Buck/LDO regulator supporting on-the-fly selection
- Peripheral Touch Controller (PTC)
- Wake-up on touch in standby mode
- Two-pin Serial Wire Debug (SWD) programming, test and debugging interface
- Temperature Range - 40°C to 85°C, - 40°C to 105°C
- 16-channel Direct Memory Access Controller (DMAC)
- 12-channel Event System
- 16-bit Timer/Counters (TC) including one low-power TC
- Two 24-bit and one 16-bit Timer/Counters for Control (TCC)
- 32-bit Real Time Counter (RTC) with clock/calendar function
- Watchdog Timer (WDT)
- CRC-32 generator
- One full-speed (12Mbps) Universal Serial Bus (USB) 2.0 interface
- USART, I2C, SPI, LIN slave
- One AES Encryption Engine & TRNG
- One Configurable Custom Logic (CCL)
- One 12-bit, 1MSPS Analog-to-Digital Converter (ADC)
- Two channel, 12-bit, 1MSPS Dual Output Digital-to-Analog Converter (DAC)
- Two Analog Comparators (AC) with window compare function
- Three Operational Amplifiers (OPAMP)
The ultra-low-power ATSAML21 based Flash microcontroller (MCU) feature sophisticated power management technologies and consumes under 35 µA/MHz in active mode and 200nA in Sleep mode. In addition to ultra-low-power performance, these devices feature Full Speed USB host and device, Event System and Sleepwalking, 12-bit analog, AES, capacitive touch sensing, built in opAmps and much more.
Supported by MPLAB X IDE and MPLAB Harmony.
Functional Safety
This device supports the IEC 61508 (SIL 2) functional safety standard.
· To request any information about the SIL 2 STL, please fill out and submit the request form on Industrial Safety Self-Test Library web page
· Learn more about 32-bit MCUs with Functional Safety capabilities including device hardware and certified software libraries.
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Tools And Software
Development Environment
Emulator and Debuggers
Demo & Evaluation Boards
Programmers
3rd Party Tools
| Tools |
|---|
 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, microprocessors and digital signal controllers.
|
| When combined with our free and award-winning MPLAB X Integrated Development Environment (IDE), the fully graphical frontend provides:
Editing errors and breakpoints that match corresponding lines in the source code
Single stepping through C and C++ (C++ only available in MPLAB XC32++ compilers) source code to inspect variables and structures at critical points
Data structures with defined data types, including floating point, display in watch windows
|
| MPLAB Code Configurator supports 8-bit, 16-bit and 32-bit PIC® microcontrollers. MCC is incorporated into both the downloadable MPLAB X Integrated Development Environment (IDE) and the cloud-based MPLAB Xpress IDE.
|
| MPLAB® Harmony is a modular framework that provides interoperable firmware libraries for application development on 32-bit microcontrollers and microprocessors.
|
| MPLAB® Extensions for Microsoft® Visual Studio Code® (VS Code®) is a collection of VS Code extensions that combines the power of the MPLAB development ecosystem with the versatility of VS Code. Whether you are a new or existing client, MPLAB Extensions for VS Code provides you with a seamless, flexible and efficient development environment with comprehensive support for designs based on our devices.
|
| Tools |
|---|
| Atmel-ICE is a powerful development tool for debugging and programming ARM® Cortex®-M based SAM and AVR microcontrollers with on-chip debug capability.
|
| Power Debugger is a powerful development tool for debugging and programming AVR and ARM® Cortex®-M based SAM microcontrollers. In addition the Power Debugger features two independent current sensing channels and includes a CDC virtual COM port interface as well as Data Gateway Interface channels for streaming application data to the host computer from a SPI, USART, TWI or GPIO source.
|
| The MPLAB® ICD 4 In-Circuit Debugger/Programmer is Microchip’s fastest, cost-effective debugging and programming tool for PIC® Microcontrollers (MCUs), Microprocessors (MPUs) and dsPIC® Digital Signal Controllers (DSCs).
|
| J-32 Debug Probe is a JTAG/ICSP Debugger that supports all of Microchip's 32-bit MCU and MPU products.
|
| The MPLAB® Snap In-Circuit Debugger/Programmer allows affordable, fast and easy debugging and programming of PIC®, dsPIC® and AVR flash MCUs and MPUs, using the powerful graphical user interface of MPLAB X Integrated Development Environment (IDE). The MPLAB Snap can be connected to a design engineer's computer using a High-Speed USB 2.0 interface and can be connected to the target via an 8-pin Single In-Line (SIL) connector. The connector uses two device I/O pins and the reset line to implement in-circuit debugging and In-Circuit Serial Programming™ (ICSP™). It has all the speed and features entry-level users need to quickly debug their prototype.
|
| Tools |
|---|
| QT2 Xplained Pro is a QTouch Surface extension board for Xplained Pro evaluation kits that demonstrates the Peripheral Touch Controller (PTC) as a high performance touch-surface controller. |
| QT3 Xplained Pro is a QTouch keypad extension board demonstrating an ultra-low power keypad design using the Peripheral Touch Controller (PTC). |
| QT5 Xplained Pro is an extension kit that enables evaluation of mutual capacitance touch using the Peripheral Touch Controller (PTC). |
| 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.
|
| The ?? SmartCard Xplained Pro is intended for use along with the SAM L22 Xplained Pro to demonstrate and prototype Smart Card applications, leveraging the ISO7816 module on the SAM L22 chip. |
| Tools |
|---|
| Atmel-ICE is a powerful development tool for debugging and programming ARM® Cortex®-M based SAM and AVR microcontrollers with on-chip debug capability.
|
| Power Debugger is a powerful development tool for debugging and programming AVR and ARM® Cortex®-M based SAM microcontrollers. In addition the Power Debugger features two independent current sensing channels and includes a CDC virtual COM port interface as well as Data Gateway Interface channels for streaming application data to the host computer from a SPI, USART, TWI or GPIO source.
|
| The MPLAB® ICD 4 In-Circuit Debugger/Programmer is Microchip’s fastest, cost-effective debugging and programming tool for PIC® Microcontrollers (MCUs), Microprocessors (MPUs) and dsPIC® Digital Signal Controllers (DSCs).
|
| J-32 Debug Probe is a JTAG/ICSP Debugger that supports all of Microchip's 32-bit MCU and MPU products.
|
| The MPLAB® PICkit™ 4 In-Circuit Debugger/Programmer allows fast and easy debugging and programming of PIC®, dsPIC® , AVR, SAM and CEC flash microcontrollers and microprocessors.
|
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["emulators","Emulator and Debuggers"] ,
["demoevaluationboards","Demo & Evaluation Boards"] ,
["programmerrelations","Programmers"] ,
["thirdpartytools","3rd Party Tools"] ,
["legacy","Legacy"] ,
["softwarelibraries","Library and Firmware"]
Design Resources
Reference Designs
Code Examples
Board Design Files
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referencedesigns,Reference Designs:
codeexamples,Code Examples:
ibisboarddesignfiles,Board Design Files: