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

Memories
• 128KB in-system self-programmable Flash
• 4K RWW Support for device variant D
• 16KB 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
• Drop in compatible with SAM D20

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
• Up To Four 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
• One full-speed (12Mbps) Universal Serial Bus (USB) 2.0 interface
• Embedded device function
• Eight endpoints
• Four 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 client
• 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, WLCSP

Operating Voltage
• 1.62V – 3.63V

A low-power, high-performance Microchip's ARM® Cortex®-M0+ based flash microcontroller, the ATSAMD21E17 is ideal for a wide range of home automation, consumer, metering, and industrial applications. It features:

• 128KB of flash and 16KB of SRAM
• 4K RWW support on MRL D version
• Up to 48MHz operating frequency
• Four serial communication modules (SERCOM) configurable as UART/USART, SPI or I²C, three 16-bit timer/counters, 32-bit Real-Time Clock and calendar, 18 PWM channels, one 14-channel 12-bit ADC, one 10-bit DAC
• Full Speed USB Device and embedded Host
• Support for up to 60 touch channels
• 1.62V to 3.63V power supply
• Easy pin migration to SAMD21G and SAMD21J devices

Supported by MPLAB X IDE and MPLAB Harmony.

Functional Safety

This device supports the ISO 26262 (ASIL B), IEC 61508 (SIL 2) and IEC 60730 (Class B) functional safety standards.  

·   The Functional Safety Manual, FMEDA and information on the Diagnostic Software are available under NDA through the request form on the 32-bit Microcontrollers Functional Safety web page.

·   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.