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ATSAMD21E15
  • ATSAMD21E15
  • ATSAMD21E15
  • ATSAMD21E15
  • ATSAMD21E15
  • ATSAMD21E15

ATSAMD21E15

In Production

NOTE: ATSAMD21E15A is not recommended for new designs, please use ATSAMD21E15B.A low-power, high-performance Microchip's ARM® Cortex®-M0+ based flash microcontroller, the ATSAMD21E15 is ideal for a wide range of home automation, consumer, metering, and industrial applications. It features:It features:32KB of Flash and 4KB of SRAMUp to 48MHz operating frequencyFive 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 comparators1.62V to 3.63V power supply32-pin package with up to 26 GPIO pinsSupported by MPLAB X IDE and MPLAB Harmony.Functional SafetyThis device supports the ISO 26262 (ASIL B), IEC 61508 (SIL...

Microchip Technology ATSAMD21E15 Product Info

16 April 2026 0

Parameters

Part Family

SAMD21

CPU Type

Cortex-M0+

MaxSpeed (MHz)

48

Program Memory Size (KB)

32

SRAM (KB)

4

Temp. Range Min.

-40

Temp. Range Max.

125

Operation Voltage Min.(V)

1.62

Operation Voltage Max.(V)

3.63

SPI

4

I2C

4

UART

4

QSPI

0

Crypto Engine

No

Internal Oscillator

32khz, 32Khz ULP, 8Mhz

Pin Count

32

Secure Boot

No

Features

  • Single-cycle hardware multiplier
  • Micro Trace Buffer
  • 32KB in-system self-programmable Flash
  • 4KB 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

    • Description

    NOTE: ATSAMD21E15A is not recommended for new designs, please use ATSAMD21E15B.

    A low-power, high-performance Microchip's ARM® Cortex®-M0+ based flash microcontroller, the ATSAMD21E15 is ideal for a wide range of home automation, consumer, metering, and industrial applications. It features:

    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.

    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. 

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