Processor
• ARM CortexM0+ CPU running at up to 48MHz
• Single-cycle hardware multiplier
• Micro Trace Buffer (MTB)

Memories
• 128KB in-system self-programmable Flash
• 4K RWW support
• 16KB SRAM Memory

System
• Power-on reset (POR) and brownout detection (BOD)
• Internal and external clock options with 48MHz Digital Frequency Locked Loop (DFLL48M)
• and 48MHz to 96MHz Fractional Digital Phase Locked Loop (FDPLL96M)
• External Interrupt Controller (EIC)
• 16 external interrupts
• One non-maskable interrupt
• Two-pin Serial Wire Debug (SWD) programming, test and debugging interface

Low Power
• Idle and standby sleep modes
• SleepWalking peripherals

Peripherals
• 12channel Direct Memory Access Controller (DMAC)
• 12channel Event System
• Three 16bit Timer/Counters (TC), configurable as either:
• One 16bit TC with two compare/capture channels
• One 8bit TC with two compare/capture channels
• One 32bit TC with two compare/capture channels, by using two TCs
• Four 24bit Timer/Counters for Control (TCC), with extended functions:
• Up to four compare channels with optional complementary output
• Generation of synchronized pulse width modulation (PWM) pattern across port pins
• Deterministic fault protection, fast decay and configurable dead-time between complementary output
• Dithering that increase resolution with up to 5 bit and reduce quantization error
• 32bit Real Time Counter (RTC) with clock/calendar function
• Watchdog Timer (WDT)
• CRC32 generator
• Four Serial Communication Interfaces (SERCOM), each configurable to operate as either:
• USART with full-duplex and single-wire half-duplex configuration
• I2C up to 3.4MHz
• SPI
• LIN slave
• One 12bit, 350ksps Analog-to-Digital Converter (ADC) with up to 14 channels
• Differential and single-ended input
• 1/2x to 16x programmable gain stage
• Automatic offset and gain error compensation
• Oversampling and decimation in hardware to support 13, 14, 15or 16bit resolution
• 10-bit, 350ksps Digital-to-Analog Converter (DAC)
• Four Analog Comparators (AC) with window compare function

I/O
• 26 GPIO pins

Packages
• 32pin QFN

Operating Voltage
• 1.62V 3.63V

A low-power, high-performance ARM® Cortex®-M0+ -based Flash microcontroller optimized for control applications, the Microchip's ATSAMD21E17L is ideal for a wide range of lighting, motor control and industrial applications. It features:

• 128KB of Flash w/4K RWW and 16KB of SRAM
• Up to 48MHz operating frequency
• Five serial communication (SERCOM) modules configurable as UART/USART, SPI or I2C, four 16-bit timer/counters, two 24-bit timer/counters, 32-bit Real-Time Clock and calendar, one 14-channel 12-bit ADC, one 10-bit DAC and four analog comparators
• 1.62V to 3.63V power supply
• 32-pin package with up to 26 GPIO pins
• Supported by Atmel Studio, ASF and the STK600 development platform

Supported by MPLAB X IDE and MPLAB Harmony.