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MCHPATSAMD21G18A-MFT

Name: ATSAMD21G18A-MFT
Brand: Microchip Technology

Microchip Technology

ARM® Cortex®-M0+ SAM D21G, Functional Safety (FuSa) Microcontroller IC 32-Bit 48MHz 256KB (256K x 8) FLASH 48-QFN (7x7)

Active7,004 in stock

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Overview

The ATSAMD21G18A-MFT is a Microchip SAM D21G series microcontroller featuring an ARM Cortex-M0+ core. It runs up to 48 MHz and provides 256 KB of on-chip flash in a 48-QFN (7x7) package. This part is a Functional Safety (FuSa) variant of the SAM D21 family, intended for applications that require safety-aware design and development.

Why Choose This Part

Choose this part when you need a widely supported Cortex-M0+ MCU with a FuSa-oriented variant of the SAM D21 family and substantial on-chip flash (256 KB). It benefits from the broad SAM D21 ecosystem (software libraries, example code, and Arduino compatibility) which speeds development and debugging for both prototypes and production devices.

Applications

Functional-safety control

Safety-critical control loops and monitoring tasks in industrial and automation systems where a FuSa-qualified MCU is required.

USB-capable devices

Embedded USB device applications such as HID, CDC (serial), or custom USB peripherals for consumer and industrial products.

Prototyping and Arduino-compatible designs

Rapid development and proof-of-concept work using Arduino Zero and other SAM D21-based boards for firmware and hardware validation.

Sensor hubs and gateway controllers

Local aggregation and preprocessing of sensor data in gateways and small edge nodes that benefit from integrated peripherals and moderate program memory.

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 38

Core Processor ARM Cortex-M0+

Package / Case 48-VFQFN Exposed Pad

Data Converters A/D 14x12b; D/A 1x10b

Oscillator Type Internal

Program Memory Size 256KB (256K x 8)

Program Memory Type FLASH

Operating Temperature -40degC ~ 125degC (TA)

Supplier Device Package 48-QFN (7x7)

Voltage - Supply (Vcc/Vdd) 1.62V ~ 3.6V

Getting Started

You can prototype on common SAM D21 development boards such as Arduino Zero or other SAMD21-based breakout and Feather boards. Firmware development is supported with the Arduino IDE for sketches, Microchip/Atmel development tools and libraries (Atmel/Microchip Studio, ASF/START), or standard ARM GCC toolchains and debuggers. Use vendor example projects and hardware abstraction libraries to accelerate peripheral bring-up and safety-related validation.

Dev Boards

Development boards and breakout modules featuring the ATSAMD21G18A-MFT 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 3,141 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

Arduino Nano 33 IoT Arduino

The Arduino Nano 33 IoT with Headers (ABX00032) is a compact and versatile development board featuring the ARM® Cortex®-

Digi-Key Mouser 355 in stock

Arduino Nano 33 IoT Arduino

The Arduino Nano 33 IoT (ABX00027) is an advanced evaluation platform designed for IoT applications, featuring the 32 bi

Digi-Key Mouser 657 in stock

Part of SAM Microcontrollers family » SAMD21G

SAMD21G Family

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

Part Number	Package	Temp Range	Stock
ATSAMD21G18A-MFT (this part)	VFQFN-48	-40degC ~ 125degC ..	7,004
ATSAMD21G18A-AU	TQFP-48	-40degC ~ 85degC (..	3,277
ATSAMD21G18A-AUT	TQFP-48	-40degC ~ 85degC (..	4,963
ATSAMD21G18A-MU	VFQFN-48	-40degC ~ 85degC (..	1,624
ATSAMD21G18A-AFT	TQFP-48	-40degC ~ 125degC ..	20,008
ATSAMD21G18A-MUT	VFQFN-48	-40degC ~ 85degC (..	3,079
ATSAMD21G18A-AF	TQFP-48	-40degC ~ 125degC ..	1,491