• 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.