ATSAML21G16B-AUT

Overview

The ATSAML21G16B-AUT is a 32-bit microcontroller based on the ARM Cortex-M0+ core, belonging to the SAM L21 series. It features 64KB of Flash memory and 8KB of SRAM. The device operates at a maximum frequency of 48MHz with an internal oscillator. It supports a supply voltage range of 1.62V to 3.63V and includes analog converters such as 10-channel 12-bit ADCs and 12-bit DACs. Connectivity options include I2C, LIN, SPI, USART, and USB interfaces. The component is housed in a TQFP-48 package and is rated for industrial temperatures from -40°C to +85°C.

Feature Summary

• Integrates ARM Cortex-M0+ processor with low-power capabilities
• Includes multiple communication peripherals including USB and LINbus
• Features high-resolution analog-to-digital and digital-to-analog converters

Applications

• Industrial control systems requiring robust connectivity
• Consumer electronics utilizing USB interfaces
• Battery-powered devices leveraging low-power modes

Procurement Notes

Verify the specific suffix 'AUT' corresponds to the TQFP-48 package and industrial temperature range (-40°C to +85°C). Confirm that the manufacturer's datasheet for the SAM L21 family explicitly lists this part number as active. Ensure compatibility with required programming tools and debuggers before finalizing procurement decisions.

Selection Notes

Select this model when a balance of moderate memory capacity and diverse peripheral support is needed within a compact 48-pin form factor. It serves as a suitable upgrade path from 8-bit architectures while maintaining power efficiency. Consider alternative pin counts or memory sizes if application requirements exceed the 64KB Flash or 8KB SRAM limits defined for this specific variant.

Part Context

This component is part of Microchip's SAM L21 family, designed for low-power applications. It shares architectural similarities with other SAM D21 devices but offers enhanced energy-saving features. The series targets cost-sensitive designs requiring reliable performance in industrial and consumer environments without complex external components.

FAQ

What is the maximum operating frequency of the ATSAML21G16B-AUT?

The microcontroller operates at a maximum frequency of 48MHz.

Does this part include hardware support for USB communication?

Yes, the device integrates a full-speed USB interface alongside other serial communication protocols.