ATSAML21G16B-MUT

Overview

The ATSAML21G16B-MUT 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 clock speed of 48MHz with a supply voltage range of 1.62V to 3.63V. It includes 14-channel 12-bit ADCs and two 12-bit DACs. Connectivity options include I2C, LINbus, SPI, USART, and USB interfaces. The component is housed in a 64-VFQFN package with exposed pad and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrated Functional Safety (FuSa) capabilities for safety-critical applications
• Ultra-low power architecture with multiple low-power modes
• High-performance analog subsystem with 12-bit resolution converters
• Comprehensive set of communication peripherals including USB and LINbus

Applications

• Industrial control systems requiring functional safety compliance
• Battery-powered IoT devices utilizing ultra-low power consumption
• Automotive instrumentation and body electronics
• Medical equipment needing precise analog signal processing

Procurement Notes

Verify the specific suffix 'MUT' corresponds to the 64-QFN package and tape-and-reel packaging configuration. Confirm that the Functional Safety (FuSa) qualification status meets your project's required Safety Integrity Level (SIL) or Automotive Safety Integrity Level (ASIL) requirements. Ensure compatibility with the intended development tools and debuggers for the SAM L21 family.

Selection Notes

Select this model when a balance of moderate memory capacity and functional safety features is required. It is suitable for applications needing USB connectivity and multiple analog inputs without the higher pin count of the J-series. Compare against the ATSAMD21G16B if automotive qualification is not necessary, as the D-series may offer different thermal or reliability profiles.

Part Context

This component is part of the Microchip SAM L21 family, designed for low-power applications with enhanced security and safety features. The G-series denotes a specific pin count and peripheral subset within the broader L21 portfolio. It shares architectural similarities with the SAM D21 but adds specialized low-power modes and safety certifications.

Replacement Considerations

ATSAMD21G16B-MU offers similar specifications but lacks the specific FuSa certification of the L-series. ATSAML21J16B-MUT provides more I/O pins and a larger package. Verify pinout compatibility and software library support before substituting.