ATSAMD21G16B-AUT

Overview

The ATSAMD21G16B-AUT is a 32-bit microcontroller from the SAM D21G Functional Safety series, built on the ARM Cortex-M0+ core. It operates at a maximum frequency of 48MHz and includes 64KB of Flash memory and 8KB of SRAM. The device features an internal oscillator and supports a supply voltage range of 1.62V to 3.6V. It offers 38 I/O pins and integrates peripherals including DMA, I2S, PWM, WDT, brown-out detection, and reset circuits. Connectivity options comprise I2C, LINbus, SPI, UART/USART, and USB interfaces. Data conversion capabilities include fourteen 12-bit ADC channels and one 10-bit DAC. The component is rated for industrial temperatures from -40°C to 85°C and is housed in a 48-TQFP package.

Feature Summary

• Functional Safety (FuSa) compliant design within the SAM D21G series
• Integrated analog peripherals with multiple high-resolution ADCs and a DAC
• Support for automotive qualification standards via AEC-Q100 certification
• Comprehensive connectivity suite including USB and standard serial buses

Applications

• Automotive embedded control systems requiring functional safety compliance
• Industrial automation controllers utilizing LINbus and I2C interfaces
• IoT devices requiring low-power operation with USB connectivity
• General-purpose embedded applications needing robust analog signal processing

Procurement Notes

Verify the specific suffix 'AUT' against official Microchip documentation to confirm tape-and-reel packaging and extended temperature or automotive grade specifications. Ensure compatibility with existing PCB footprints for the 48-TQFP package. Cross-reference the latest datasheet revision for any errata or pinout adjustments. Confirm RoHS and REACH compliance status for your region. Validate that the operating voltage range matches your system power rails.

Selection Notes

Select this model when functional safety certification is required alongside automotive-grade reliability. Compare storage capacity against other SAM D21 variants if larger code space is needed. Consider the 48-TQFP package constraints for board layout density. Evaluate peripheral availability such as USB and I2S against project interface requirements. Check thermal performance limits for enclosed industrial environments.

Part Context

This component belongs to the SAM D21G family, which emphasizes functional safety features for critical applications. It shares the Cortex-M0+ architecture with other SAM D21 series parts but distinguishes itself through FuSa support and AEC-Q100 qualification. The G-series typically targets automotive and industrial sectors where reliability and safety standards are paramount compared to general-purpose consumer electronics.

Replacement Considerations

ATSAMD21G16B-AU: Identical electrical specifications and memory configuration; differs only in tray packaging instead of tape-and-reel. ATSAMD21G17D-AU: Offers increased memory (128KB Flash, 16KB RAM) with identical pinout and functionality.