Processor
• ARM Cortex-M0+ CPU running at up to 48MHz
• Single-cycle hardware multiplier
• Micro Trace Buffer

Memories
• 32KB in-system self-programmable Flash
• 4KB SRAM Memory

System
• Power-on reset (POR) and brown-out detection (BOD)
• Internal and external clock options with 48MHDigital Frequency Locked Loop (DFLL48M) and 48MHto 96MHFractional
• 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
• 12-channel Direct Memory Access Controller (DMAC)
• 12-channel Event System

Three 16-bit Timer/Counters (TC), configurable as either:
• One 16-bit TC with compare/capture channels
• One 8-bit TC with compare/capture channels
• One 32-bit TC with compare/capture channels, by using two TCs

Three 24-bit 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

32-bit Real Time Counter (RTC) with clock/calendar function

Watchdog Timer (WDT)

CRC-32 generator

Five Serial Communication Interfaces (SERCOM), each configurable to operate as either:
• USART with full-duplex and single-wire half-duplex configuration
• I2C Bus up to 3.4MHz
• SMBUS/PMBUS
• SPI
• LIN Target

12-bit, 350ksps Analog-to-Digital Converter (ADC) with up to 10 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-, 15- or 16-bit resolution

10-bit, 350ksps Digital-to-Analog Converter (DAC)

Two Analog Comparators (AC) with window compare function

Peripheral Touch Controller (PTC)
• 256-channel capacitive touch and proximity sensing

I/O
• 26 GPIO pins

Packages
• 32-pin TQSP, QFN

Operating Voltage
• 1.62V – 3.63V

A low-power, high-performance ARM® Cortex®-M0+ based Flash microcontroller (MCU) optimized for control applications, the Microchip's ATSAMD21E15L is ideal for a wide range of lighting, motor control and industrial applications. It features:

• 32KB of Flash and 4KB 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 MPLAB X IDE and MPLAB Harmony.