ATSAMD21E17A-AF

Overview

The ATSAMD21E17A-AF is a 32-bit ARM Cortex-M0+ microcontroller from the SAM D21 family, designed for functional safety applications. It features 128 kB of Flash program memory and 16 kB of SRAM data memory. The device operates with a maximum clock frequency of 48 MHz and supports an input voltage range of 1.62 V to 3.63 V. It includes ten 12-bit ADC channels and one 10-bit DAC. The component provides 26 general-purpose I/O lines and integrates interfaces such as I2C, SPI, USART, LIN, and I2S. It is housed in a 32-TQFP package and is qualified to AEC-Q100 standards, supporting an operating temperature range from -40°C to +125°C.

Feature Summary

• Integrated ARM Cortex-M0+ core optimized for low-power efficiency and code density.
• Built-in hardware acceleration via Direct Memory Access (DMA) controller.
• Comprehensive analog subsystem including multiple 12-bit ADCs and a 10-bit DAC.
• Robust peripheral set supporting various communication protocols like SPI, I2C, and USART.

Applications

• Automotive body electronics and control modules
• Industrial sensor nodes and monitoring systems
• Consumer devices requiring extended temperature operation

Procurement Notes

Verify the specific suffix 'AF' confirms the -40°C to +125°C industrial/automotive temperature grade and the 32-TQFP package type. Ensure compatibility with AEC-Q100 requirements if deploying in automotive environments. Cross-reference the manufacturer datasheet for any recent product change notices regarding pinout or electrical characteristics updates.

Selection Notes

Select this model when a balance of moderate memory capacity and high-temperature reliability is required. It is suitable for designs needing 128 kB of non-volatile storage and 16 kB of RAM within a compact 32-pin footprint. Consider alternative SAM D21 variants only if additional I/O count or different package constraints are necessary.

Part Context

This component belongs to the SAM D21 series of 32-bit microcontrollers based on the ARM Cortex-M0+ architecture. The series is characterized by its focus on energy efficiency and integrated peripherals. The 'E' designation typically indicates a specific pin count and peripheral subset within the broader SAM D21 family, tailored for cost-sensitive yet robust embedded applications.

Replacement Considerations

ATSAMD21E17A-AUT: Same core specifications but available in tape-and-reel packaging instead of trays.