ATSAML21E16B-AUT

Overview

The ATSAML21E16B-AUT is a 32-bit ARM Cortex-M0+ microcontroller from the SAM L21 series, designed for functional safety applications. It features 64 KB of flash memory and 12 KB of SRAM, operating at a maximum clock frequency of 48 MHz. The device supports a supply voltage range of 1.62 V to 3.63 V and operates within an industrial temperature range of -40°C to +85°C. It is housed in a 32-pin TQFP package and includes advanced analog peripherals such as a 12-bit ADC with 25 channels and two 12-bit DACs.

Feature Summary

• Integrated functional safety capabilities compliant with AEC-Q100 standards for automotive reliability.
• Advanced analog subsystem featuring high-resolution 12-bit data converters and programmable gain amplifiers.
• Comprehensive connectivity suite supporting USB full-speed, I2S, LIN, SPI, and USART interfaces.

Applications

• Automotive sensor nodes requiring functional safety certification
• Industrial control systems with analog signal processing needs
• Battery-powered devices utilizing low-power operational modes

Procurement Notes

Verify the specific suffix 'AUT' against official Microchip documentation to confirm the exact package type and temperature grade. Ensure compatibility with required programming interfaces and check for moisture sensitivity levels prior to assembly. Confirm that the selected variant meets all regulatory requirements for the intended deployment environment.

Selection Notes

Select this component when functional safety compliance is mandatory alongside moderate memory requirements. Compare against the ATSAMD21 series if automotive qualification is not needed but similar performance is desired. Evaluate power consumption profiles against other SAM L21 variants to optimize battery life for portable applications.

Part Context

This MCU belongs to the SAM L21 family, which emphasizes low power consumption and functional safety. It shares architectural similarities with the SAM D21 series but adds robust diagnostic features and extended analog capabilities suitable for harsh environments. The device integrates multiple timer/counters and PWM channels for precise motor control and signal generation tasks.

FAQ

Is the ATSAML21E16B-AUT qualified for automotive applications?

Yes, the device holds AEC-Q100 qualification, making it suitable for automotive-grade functional safety applications.

What is the maximum operating speed of this microcontroller?

The processor core can operate at a maximum clock frequency of 48 MHz.