ATSAME51N20A-AUT

Overview

The ATSAME51N20A-AUT is a 32-bit microcontroller from the SAM E51 family, manufactured by Microchip Technology. It features an ARM Cortex-M4F core operating at a maximum frequency of 120 MHz. The device integrates 1 MB of in-system programmable flash memory and 256 KB of SRAM. It supports a supply voltage range of 1.71 V to 3.63 V and operates within a temperature range of -40°C to +85°C. The component is housed in a 100-TQFP package with 81 I/O lines.

Feature Summary

• Integrated ARM Cortex-M4F processor with hardware floating-point unit for efficient digital signal processing.
• Comprehensive analog subsystem including multiple 12-bit ADCs and DACs for precise signal conditioning.
• Extensive connectivity options supporting Ethernet, USB, CAN FD, LINbus, and various serial interfaces.
• Automotive-grade qualification ensuring reliability under extended temperature and voltage conditions.

Applications

• Automotive body control modules and gateway applications
• Industrial motor drives and automation controllers
• Smart energy metering and utility infrastructure devices
• Medical equipment requiring robust real-time processing

Procurement Notes

Verify the specific suffix 'AUT' confirms automotive grade AEC-Q100 certification and extended temperature range. Confirm the package type matches the design footprint requirements. Check for any recent Product Change Notifications regarding assembly sites or materials. Ensure compatibility with existing firmware libraries for the SAM E51 series before finalizing procurement decisions.

Selection Notes

Select this component when automotive compliance and high-performance computing are required in a compact form factor. Compare against the ATSAMD51 series if industrial grade suffices, as the E51 offers enhanced peripheral sets. Evaluate pin count and memory needs against smaller variants like the ATSAME51J18A to optimize cost. Consider power consumption profiles relative to application duty cycles.

Part Context

This part belongs to the SAM E51 family, designed for demanding embedded applications. It shares architectural similarities with the SAM D51 but includes additional peripherals and automotive certifications. The family emphasizes security features and low-power operation alongside high-speed processing capabilities for complex control loops.

Replacement Considerations

ATSAME51N20A-AU-EFP serves as a non-automotive equivalent with identical electrical specifications but different environmental qualifications. Verify that the absence of AEC-Q100 certification meets project requirements before substitution.

FAQ

Does the ATSAME51N20A-AUT support hardware cryptographic acceleration?

Yes, it includes dedicated hardware security modules such as the True Random Number Generator (TRNG) and Advanced Encryption Standard (AES) engine for secure data handling.

What is the maximum clock speed of the Cortex-M4F core?

The core operates at a maximum frequency of 120 MHz, allowing for high-throughput execution of instructions.