ATSAML21E15B-MUT

Overview

The ATSAML21E15B-MUT is a 32-bit microcontroller based on the ARM Cortex-M0+ core, belonging to the SAM L21 series with Functional Safety (FuSa) capabilities. It features 64KB of Flash memory and 12KB of SRAM, operating at a maximum frequency of 48MHz. The device supports a supply voltage range of 1.62V to 3.63V and includes 10-channel 12-bit ADCs and 2-channel 12-bit DACs. Connectivity options include I2C, LINbus, SPI, USART, and USB interfaces. It is housed in a 64-QFN package with dimensions of 9x9mm and operates within a temperature range of -40°C to 85°C.

Feature Summary

• Integrates Functional Safety (FuSa) design for enhanced reliability in safety-critical applications.
• Provides comprehensive analog peripherals including multiple high-resolution ADCs and DACs.
• Supports versatile communication protocols such as USB, LINbus, SPI, and USART.
• Features low-power operation suitable for battery-constrained embedded systems.

Applications

• Industrial control systems requiring functional safety compliance
• Smart metering and utility infrastructure devices
• Medical equipment with strict reliability standards
• Automotive body electronics and sensor nodes

Procurement Notes

Verify the specific suffix 'MUT' corresponds to the 64-QFN 9x9mm package and tape-and-reel packaging format. Confirm that the Functional Safety qualification status meets your project's integrity requirements. Ensure compatibility with the 1.62V to 3.63V supply voltage range for your power architecture. Check for any regional regulatory certifications or RoHS compliance documentation required for your market.

Selection Notes

Select this component when Functional Safety certification is mandatory for the application. Choose over standard SAM D21 variants if higher memory capacity and additional analog channels are needed. Consider the 64-pin QFN package for dense PCB layouts requiring extensive I/O. Evaluate power consumption profiles against other SAM L21 family members if extended battery life is critical.

Part Context

This part belongs to the Microchip SAM L21 family, which extends the popular SAM D21 line with added Functional Safety features. It shares architectural similarities with the ATSAMD21E15B but offers increased memory and enhanced safety mechanisms. The series targets applications where system integrity and diagnostic coverage are prioritized alongside standard microcontroller performance metrics.

Replacement Considerations

ATSAMD21E15B-MUT: Similar pinout and core but lacks Functional Safety certification and has lower memory. ATSAML21J16B-MUT: Higher memory and more I/O but different package size. ATSAML21E18B-MUT: Same package but significantly higher memory capacity.