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ATSAMC21E18A-MUT

MCHPATSAMC21E18A-MUT

Microchip Technology
ARM® Cortex®-M0+ SAM C21, Functional Safety (FuSa) Microcontroller IC 32-Bit 48MHz 256KB (256K x 8) FLASH 32-VQFN (5x5)
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Overview

The ATSAMC21E18A-MUT is a 32-bit microcontroller featuring the ARM Cortex-M0+ core designed for harsh environments and functional safety applications. It operates at 48MHz and is distinguished by its 5V operation support, which provides superior noise immunity compared to standard 3.3V MCUs. The device includes 256KB of Flash and integrated CAN-FD controllers, making it a robust choice for industrial and automotive networking.

Why Choose This Part

The primary advantage is its native 2.7V to 5.5V supply range, which simplifies interfacing with 5V sensors and actuators without level shifters. It features Dual CAN-FD interfaces for modern high-bandwidth communication and includes architectural features specifically for Functional Safety (FuSa). The Cortex-M0+ core provides an excellent balance of 32-bit performance and low power consumption.

Applications

Industrial Control Systems
Utilizes 5V operation for high noise immunity in factory environments with significant electromagnetic interference.
Automotive Body Electronics
Integrated CAN-FD controllers enable high-speed vehicle networking for climate control and lighting modules.
Functional Safety Controllers
Designed for ISO 26262 and IEC 61508 compliance, suitable for safety-critical hardware monitoring.
Motor Control Hardware
Leverages 5V I/O and specialized timers to interface directly with power stages and gate drivers.

Key Specifications

Speed 48MHz
RAM Size 32K x 8
Core Size 32-Bit
Peripherals Brown-out Detect/Reset, DMA, POR, WDT
Connectivity CANbus, I2C, LINbus, SPI, UART/USART
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, 1x16b; 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) 2.7V ~ 5.5V

Getting Started

Develop using the Microchip Studio or MPLAB X IDEs and the XC32 compiler. The SAM C21 Xplained Pro (ATSAMC21-XPRO) evaluation kit is the recommended hardware platform for rapid prototyping. For safety-critical designs, utilize the Microchip Functional Safety diagnostic libraries to simplify certification processes.

ATSAMC21E Family

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

Part Number Package Stock
ATSAMC21E18A-MUT (this part) VFQFN-32 56,729
ATSAMC21E18A-AUT TQFP-32 6,834

Also Consider

ATSAMD21E18A-MUT MCHPMicrochip Technology - Choose this if 5V operation and CAN-FD are not required and a standard 3.3V general-purpose MCU is sufficient.
STM32G0B1CBT6 STMicroelectronics - Provides dual CAN-FD support and more RAM in a similar pin count, though it lacks the 5V native I/O capability.

Categories

Microcontrollers > Microchip