ATSAMD21E15B-UUT

Overview

The ATSAMD21E15B-UUT is a 32-bit microcontroller based on the ARM Cortex-M0+ core, part of the SAM D21E Functional Safety series. It features 32KB of Flash memory and 4KB of SRAM. The device operates at a maximum clock frequency of 48MHz with a supply voltage range of 1.62V to 3.63V. It includes ten 12-bit ADC channels and one 10-bit DAC. Connectivity options include I2C, LINbus, SPI, USART, USB, and I2S. The component is housed in a 35-wireless ball grid array package (WLCSP-35) and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrated functional safety capabilities aligned with automotive reliability standards
• Supports low-power operation with multiple sleep modes for energy efficiency
• Includes hardware acceleration for cryptographic operations and data integrity checks

Applications

• Automotive body control modules requiring AEC-Q100 compliance
• Industrial sensor nodes utilizing LINbus communication
• Portable medical devices needing precise analog signal acquisition
• Consumer electronics with USB connectivity requirements

Procurement Notes

Verify the specific suffix UUT corresponds to the WLCSP-35 packaging format when sourcing. Confirm that the functional safety qualification meets the target application's integrity level requirements. Ensure design files account for the thermal characteristics of the wireless ball grid array package during PCB layout.

Selection Notes

Select this variant for applications requiring automotive-grade reliability in a compact footprint. Compare against other SAM D21E models if higher memory capacity or different pin counts are needed. Consider the WLCSP-35 package constraints for board space versus assembly complexity compared to QFN or TQFP alternatives.

Part Context

This component belongs to the SAM D21E family, which extends the standard SAM D21 series with enhanced functional safety features. It targets markets demanding high reliability, such as automotive and industrial sectors. The E-series designation indicates specific qualification standards beyond general consumer electronics use cases.

Replacement Considerations

ATSAMD21E15B-MU offers identical electrical specifications but uses a QFN-32 package instead of WLCSP-35.