Memories
• Micro Trace Buffer
• 64KB in-system self-programmable Flash
• 8KB SRAM Memory
• 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
• Idle and standby sleep modes
• SleepWalking peripherals
• 12-channel Direct Memory Access Controller (DMAC)
• 12-channel Event System
• 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 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
• Embedded device function
• Eight endpoints
• USART with full-duplex and single-wire half-duplex configuration
• I2C Bus up to 3.4MHz
• SMBUS/PMBUS
• SPI
• LIN client
• 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
• 256-channel capacitive touch and proximity sensing
• 26 GPIO pins
• 32-pin TQSP, QFN, WLCSP
• 1.62V – 3.63V

Memories

Processor
• Arm Cortex-M0+ CPU running at up to 48MHz

NOTE: ATSAMD21E16A is not recommended for new designs, please use ATSAMD21E16B.

A low-power, high-performance ARM® Cortex®-M0+ -based Flash microcontroller optimized for control applications, the ATSAMD21E16 is ideal for a wide range of home automation, consumer, metering, and industrial applications. It features:

• 64KB of Flash and 8KB 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.

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.