• ARM Cortex-M0+ CPU running at up to 32 MHz
• 256KB in-system self-programmable Flash
• 8KB Flash Read-While-Write section
• 32KB SRAM Main Memory
• Operating voltage: 1.62V – 3.63V
• Segment LCD (SLCD) controller
• Ultra Low Power Architecture consuming 39µA/MHz
• 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
• 16-channel Direct Memory Access Controller (DMAC)
• 8-channel Event System
• 16-bit Timer/Counters (TC)
• One 24-bit Timer/Counters for Control (TCC)
• Frequency Meter
• 8x32-bit Backup Register
• Tamper Detection
• Watchdog Timer (WDT)
• CRC-32 generator
• One full-speed (12Mbps) Universal Serial Bus (USB) 2.0 Device
• ISO7816, USART, I2C, SPI
• One AES Encryption Engine & TRNG
• One Configurable Custom Logic (CCL)
• One 12-bit, 1MSPS Analog-to-Digital Converter (ADC)
• Two Analog Comparators (AC) with window compare function

The ultra-low-power ATSAML22 based Flash microcontrollers (MCU) feature sophisticated power management technologies and consumes 39 µA/MHz (CPU running CoreMark) in active mode and down to 490nA in ultra low-power backup mode with RTC. In addition to ultra-low-power performance, these devices feature Segment LCD controller, tamper detection, smart card interface, Full Speed USB device, Event System and Sleepwalking, 12-bit analog, AES, capacitive touch sensing and much more. 

Supported by MPLAB X IDE and MPLAB Harmony.