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ATSAMC21E18A-MNT

MCHPATSAMC21E18A-MNT

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-MNT is a 32-bit ARM Cortex-M0+ microcontroller designed for robust industrial and automotive applications requiring high-voltage operation and functional safety. It operates at 48MHz with 256KB of flash and features dual CAN-FD interfaces, making it a reliable choice for vehicle networking and control systems.

Why Choose This Part

The SAM C21 series stands out with its native 5V operation, providing superior noise immunity compared to standard 3.3V MCUs. It includes dedicated hardware for functional safety (FuSa) and dual CAN-FD support, reducing the need for external level shifters and interface controllers.

Applications

Automotive Body Control
Utilizing the 5V operation and CAN-FD interfaces for lighting, wiper, and door control modules.
Industrial Motor Control
Using integrated timers and high-voltage I/O to drive power stages in harsh electrical environments.
Functional Safety Systems
Implementation in ISO 26262 or IEC 61508 compliant designs requiring hardware-level safety features.
Appliance Control
Providing noise immunity for home appliances through its 2.7V to 5.5V supply range and integrated touch controllers.

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 ~ 105degC (TA)
Supplier Device Package 32-VQFN (5x5)
Voltage - Supply (Vcc/Vdd) 2.7V ~ 5.5V

Getting Started

Developers can begin evaluation with the SAM C21 Xplained Pro evaluation kit. The device is fully supported by Microchip Studio (formerly Atmel Studio) and MPLAB X IDE, utilizing the XC32 compiler and Harmony v3 framework for driver configuration.

ATSAMC21E Family

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

Part Number Package Temp Range Stock
ATSAMC21E18A-MNT (this part) VFQFN-32 -40degC ~ 105degC .. 8,761
ATSAMC21E18A-AUT TQFP-32 -40degC ~ 85degC (.. 6,834
ATSAMC21E18A-MUT VFQFN-32 -40degC ~ 85degC (.. 56,668

Also Consider

ATSAMC21G18A-AUT MCHPMicrochip Technology - Offers the same 48MHz Cortex-M0+ core and 5V operation but in a 48-pin package for designs requiring more I/O.
STM32G0B1CBT6 STMicroelectronics - An alternative Cortex-M0+ MCU with dual CAN-FD support, though it operates at a lower 3.3V standard.