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ATSAMD21E18A-MUT

MCHPATSAMD21E18A-MUT

Microchip Technology
ARM® Cortex®-M0+ SAM D21E, Functional Safety (FuSa) Microcontroller IC 32-Bit 48MHz 256KB (256K x 8) FLASH 32-VQFN (5x5)
Active24,578 in stock
Datasheet Digi-Key Compare Prices

Overview

The ATSAMD21E18A-MUT is a low-power, high-performance ARM Cortex-M0+ based microcontroller featuring 256KB of Flash and 32KB of SRAM in a compact 32-pin VQFN package. It is designed for functional safety (FuSa) applications and operates at frequencies up to 48MHz with a diverse set of serial communication peripherals and an integrated USB 2.0 interface. This MCU is notable for its SleepWalking technology, which allows peripherals to wake up the system selectively to minimize power consumption.

Why Choose This Part

It offers an excellent balance of memory density with 256KB Flash in a small 5x5mm footprint. The inclusion of the Event System and DMA allows for high-speed data movement and peripheral synchronization without CPU intervention, significantly improving real-time responsiveness and power efficiency.

Applications

Industrial Safety Controllers
Utilizes the integrated Functional Safety (FuSa) features for reliable monitoring in industrial environments.
USB Human Interface Devices
The full-speed USB 2.0 device and host capability makes it ideal for custom keyboards, mice, and specialized interface panels.
Capacitive Touch Interfaces
Leverages the Peripheral Touch Controller (PTC) for robust proximity sensing and capacitive touch buttons.
Battery-Powered IoT Nodes
Optimized for low power with multiple sleep modes and DMA-driven peripheral tasks that reduce CPU uptime.

Key Specifications

Speed 48MHz
RAM Size 32K x 8
Core Size 32-Bit
Peripherals Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
Connectivity I2C, LINbus, SPI, UART/USART, USB
Mounting Type Surface Mount
Number of I/O 26
Core Processor ARM Cortex-M0+
Package / Case 32-VFQFN Exposed Pad
Data Converters A/D 10x12b; D/A 1x10b
Oscillator Type Internal
Program Memory Size 256KB (256K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 32-VQFN (5x5)
Voltage - Supply (Vcc/Vdd) 1.62V ~ 3.6V

Getting Started

Developers can begin evaluation using the SAM D21 Curiosity Nano or Xplained Pro evaluation kits. The part is fully supported by the Microchip Atmel Studio and MPLAB X IDEs, utilizing the Harmony v3 framework or Advanced Software Framework (ASF) for driver configuration and middleware. Programming is typically performed via the Serial Wire Debug (SWD) interface.

Dev Boards

Development boards and breakout modules featuring the ATSAMD21E18A-MUT or compatible chips — ready to use for prototyping.

Seeed Studio XIAO SAMD21 Seeed Technology Co., Ltd
ATSAMD21G18 XIAO SAMD21 SAM D ARM® Cortex®-M0 MCU 32-Bit Embedded Evaluation Board
Digi-Key 509 in stock
Seeed Studio XIAO SAMD21 Seeed Technology Co., Ltd
ATSAMD21G18 XIAO SAMD21 SAM D ARM® Cortex®-M0+ MCU 32-Bit Embedded Evaluation Board
Digi-Key 2,940 in stock
Adafruit Feather M0 Express Adafruit Industries LLC
ATSAMD21G18 Feather M0 Express SAM D ARM® Cortex®-M0+ MCU 32-Bit Embedded Evaluation Board
Digi-Key Mouser 364 in stock
The Arduino Nano 33 IoT with Headers (ABX00032) is a compact and versatile development board featuring the ARM® Cortex®-
Digi-Key Mouser 947 in stock
The Arduino Nano 33 IoT (ABX00027) is an advanced evaluation platform designed for IoT applications, featuring the 32 bi
Digi-Key Mouser 593 in stock
Part of SAM Microcontrollers family » SAMD21E

SAMD21E Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number RAM Package Flash Temp Range Stock
ATSAMD21E18A-MUT (this part) 32K VFQFN-32 256KB -40degC ~ 85degC (.. 24,578
ATSAMD21E18A-AUT 32K TQFP-32 256KB -40degC ~ 85degC (.. 11,120
ATSAMD21E18A-AFT 32K TQFP-32 256KB -40degC ~ 125degC .. 11,484
ATSAMD21E15B-AFT 4K TQFP-32 32KB -40degC ~ 125degC .. 2,970
ATSAMD21E18A-AU (Microchip) 32K TQFP-32 256KB -40degC ~ 85degC (.. 1,742
ATSAMD21E17A-AUT 16K TQFP-32 128KB -40degC ~ 85degC (.. 4,000
Also available as: ATSAMD21E17D-MZVAO, ATSAMD21E16B-AZVAO, ATSAMD21E18A-AZVAO, ATSAMD21E17D-AZVAO, ATSAMD21E18A-MZVAO, ATSAMD21E15B-MFT

Also Consider

ATSAMD21G18A-AUT MCHPMicrochip Technology - Provides the same 256KB Flash and 32KB RAM but in a larger 48-pin package for designs requiring more I/O pins.