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    Parts   Wearables & Medical  Ultra-Low Power MCUs    SAM Microcontrollers Family    SAMD21E    ATSAMD21E18A-MU
ATSAMD21E18A-MU

MCHPATSAMD21E18A-MU

Microchip
Same SAM D21E device in alternate packaging/order option (non-taped reel suffix)
Active22,657 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The Microchip ATSAMD21E18A-MU is a 32-bit microcontroller featuring an ARM Cortex-M0+ core, operating at up to 48MHz. It integrates 256KB of Flash memory and 32KB of RAM. This MCU provides a rich set of peripherals and connectivity options in a compact 32-pin VQFN package.

Why Choose This Part

Engineers benefit from the ATSAMD21E18A-MU's balance of processing power and power efficiency, critical for embedded designs. The extensive peripheral set, including multiple communication interfaces, ADCs, and DACs, reduces external component count. Its compact 32-pin VQFN package is ideal for space-constrained applications.

Applications

Battery-Powered IoT Devices
Its low-power modes and efficient ARM Cortex-M0+ core make it suitable for energy-constrained IoT applications requiring extended battery life.
Industrial Sensor Nodes
With multiple communication interfaces like I2C, SPI, and UART, it can interface with various industrial sensors for data acquisition and control.
Human-Machine Interface (HMI)
The Peripheral Touch Controller (PTC) and general-purpose I/O can be used for implementing simple touch-based user interfaces.
USB Connectivity Solutions
The integrated Full-Speed USB interface allows for direct connection to host systems, enabling data logging, device configuration, or USB HID applications.
Motor Control
The PWM channels and ADC can be utilized for basic motor speed and position control in small embedded systems.

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

Development for the ATSAMD21E18A-MU is typically done using Microchip's MPLAB X IDE, along with the Atmel Studio 7 IDE. Evaluation boards like the SAM D21 Xplained Pro can accelerate prototyping. The Arm Cortex-M0+ core is supported by standard Arm-based toolchains.

Dev Boards

Development boards and breakout modules featuring the ATSAMD21E18A-MU 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 2,742 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 989 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-MU (this part) 32K VFQFN-32 256KB -40degC ~ 85degC (.. 22,657
ATSAMD21E18A-AUT (Microchip Technology) 32K TQFP-32 256KB -40degC ~ 85degC (.. 11,120
ATSAMD21E18A-AFT (Microchip Technology) 32K TQFP-32 256KB -40degC ~ 125degC .. 11,484
ATSAMD21E15B-AFT (Microchip Technology) 4K TQFP-32 32KB -40degC ~ 125degC .. 2,970
ATSAMD21E18A-AU 32K TQFP-32 256KB -40degC ~ 85degC (.. 1,742
ATSAMD21E17A-AUT (Microchip Technology) 16K TQFP-32 128KB -40degC ~ 85degC (.. 3,999
Also available as: ATSAMD21E17D-MZVAO, ATSAMD21E18A-AZVAO, ATSAMD21E16B-AZVAO, ATSAMD21E17D-AZVAO, ATSAMD21E18A-MZVAO, ATSAMD21E15B-MFT

Also Consider

ATSAMD21G18A-AU MCHPMicrochip Technology - This is a pin-compatible SAM D21 variant with more I/O and a larger package, suitable if more GPIOs are needed while maintaining the same core.

Categories

Wearables & Medical > Ultra-Low Power MCUs