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ATSAMC21G16A-AUT

MCHPATSAMC21G16A-AUT

Microchip Technology
ARM® Cortex®-M0+ SAM C21, Functional Safety (FuSa) Microcontroller IC 32-Bit 48MHz 64KB (64K x 8) FLASH 48-TQFP (7x7)
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Overview

The ATSAMC21G16A-AUT is a 32-bit ARM Cortex-M0+ microcontroller designed for high-endurance industrial and automotive applications. It features a unique 5V operating voltage range and integrated dual CAN FD interfaces, making it ideal for robust communication in electrically noisy environments.

Why Choose This Part

This MCU operates up to 5.5V, providing significantly better noise immunity and simpler interfacing to legacy 5V sensors compared to 3.3V alternatives. It includes dual CAN-FD support and a hardware Divide and Square Root (DIVAS) peripheral to accelerate math-intensive tasks on the Cortex-M0+ core.

Applications

Automotive Body Control
Manages lighting, wipers, and window motors using the 5V supply for improved signal integrity.
Industrial Motor Control
Utilizes the 48MHz core and hardware dividers to perform efficient control loops for brushless DC motors.
Functional Safety Systems
Implements ISO 26262 and IEC 61508 safety standards using the built-in hardware error correction and safety-ready peripherals.

Key Specifications

Speed 48MHz
RAM Size 8K 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 38
Core Processor ARM Cortex-M0+
Package / Case 48-TQFP
Data Converters A/D 14x12b, 2x16b; D/A 1x10b
Oscillator Type Internal
Program Memory Size 64KB (64K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 48-TQFP (7x7)
Voltage - Supply (Vcc/Vdd) 2.7V ~ 5.5V

Getting Started

Development is primarily supported by the SAM C21 Xplained Pro evaluation kit (ATSAMC21-XPRO). Engineers can use the Microchip Studio or MPLAB X IDEs along with the Atmel START or MPLAB Harmony software frameworks to configure the CAN-FD and SERCOM interfaces.

ATSAMC21G Family

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

Part Number RAM Package Flash Stock
ATSAMC21G16A-AUT (this part) 8K TQFP-48 64KB —
ATSAMC21G18A-MUT 32K VFQFN-48 256KB 8,385
ATSAMC21G17A-AUT 16K TQFP-48 128KB 299

Also Consider

ATSAMC21J18A-AUT MCHPMicrochip Technology - Offers the same 5V architecture but with increased 256KB Flash and more I/O pins for larger applications.
STM32G0B1VET6 STMicroelectronics - Alternative Cortex-M0+ with CAN FD support, though it operates at a standard 3.3V logic level.