ATSAMC21E15A-AUT

Overview

The ATSAMC21E15A-AUT is a 32-bit RISC microcontroller based on the ARM Cortex-M0+ core, manufactured by Microchip Technology. It features 32 kB of in-system programmable Flash memory and 4 kB of SRAM. The device operates with a maximum clock frequency of 48 MHz and supports an operating voltage range from 2.7 V to 5.5 V. It includes two 12-bit ADCs with 10 channels and a 10-bit DAC. The component provides 26 general-purpose I/O lines and integrates multiple communication interfaces including SPI, USART, I2C, LIN, and PMBus. It is housed in a 32-pin TQFP package and is qualified under AEC-Q100 standards for automotive applications.

Feature Summary

• ARM Cortex-M0+ processor core optimized for low-power embedded control applications
• Integrated analog subsystem featuring dual 12-bit ADCs and a 10-bit DAC
• Comprehensive peripheral set supporting serial communication protocols such as SPI, USART, I2C, LIN, and PMBus
• Automotive-grade qualification ensuring reliability across extended temperature ranges

Applications

• Automotive body electronics and gateway controllers
• Industrial sensor nodes and data acquisition systems
• Consumer appliance control units
• Battery management system monitoring

Procurement Notes

Verify the specific suffix 'AUT' corresponds to the 85°C industrial temperature grade and TQFP-32 packaging configuration. Confirm AEC-Q100 compliance requirements match the target application's environmental stress specifications. Ensure the ordering part number aligns with the required tape-and-reel quantity if bulk procurement is intended. Cross-reference the datasheet revision date to ensure compatibility with current design tools.

Selection Notes

Select this component when a balance of processing capability and analog integration is required within a compact 32-pin footprint. The 48 MHz speed and 32 kB memory are suitable for moderate complexity control loops. Consider the 2.7 V to 5.5 V supply range for flexibility in power domain design. Evaluate the available I/O count against interface requirements before choosing larger packages in the same family.

Part Context

This device belongs to the ATSAMC21 family of 32-bit microcontrollers designed for cost-sensitive and space-constrained applications. The family shares a common instruction set and peripheral architecture, facilitating migration between different pin counts and memory sizes. The E-series typically offers a mid-range feature set compared to G or J series variants, focusing on essential connectivity and analog performance.

Replacement Considerations

Direct pin-compatible alternatives within the same package include other members of the ATSAMC21E series with varying memory sizes, such as the ATSAMC21E16A. For functional replacements, verify that the substitute maintains the same ARM Cortex-M0+ core and compatible peripheral register maps to minimize software adaptation efforts.