ATSAME51J19A-AFT

Overview

The ATSAME51J19A-AFT is an ARM-based microcontroller from the Microchip ATSAME51 series, featuring a Cortex-M4F core with a floating-point unit. It operates at a maximum clock frequency of 120 MHz and includes 512 kB of Flash program memory and 192 kB of SRAM data RAM. The device provides 51 general-purpose I/O pins and supports a supply voltage range of 1.71 V to 3.6 V. It integrates multiple communication interfaces including CAN, LIN, I2C, SPI, and USART. The component is housed in a 64-pin TQFP package and is qualified under AEC-Q100 standards for automotive applications.

Feature Summary

• Integrated ARM Cortex-M4F processor with hardware floating-point support for efficient signal processing.
• Automotive-grade qualification compliant with AEC-Q100 reliability standards.
• Comprehensive peripheral set including high-speed analog-to-digital converters and digital-to-analog converters.
• Robust connectivity options supporting CAN, LIN, and standard serial communication protocols.

Applications

• Automotive body control modules and gateway systems
• Industrial motor control and automation drives
• Smart energy metering and utility infrastructure
• Advanced human-machine interface (HMI) displays

Procurement Notes

Verify the specific suffix 'AFT' against official Microchip documentation to confirm the exact package type and temperature grade, as variations exist within the ATSAME51 family. Ensure compliance with RoHS directives and check for any recent Product Change Notifications regarding packaging or labeling updates before finalizing procurement specifications.

Selection Notes

Select this component when designing for environments requiring AEC-Q100 certification alongside high-performance computing capabilities. The combination of substantial Flash memory and extensive I/O makes it suitable for complex embedded logic. Consider the thermal characteristics of the TQFP package relative to the system's power dissipation requirements and ambient operating conditions.

Part Context

This microcontroller belongs to the ATSAME51 family, which targets high-performance embedded applications. It shares architectural similarities with other members like the ATSAME51J19A but differs in physical packaging and specific commercial or industrial grading. The family is designed to offer scalability across various pin counts and memory configurations while maintaining software compatibility.

Replacement Considerations

Direct substitutes include other variants within the ATSAME51 series such as ATSAME51J19A-AU or ATSAME51J19A-MU, provided the package footprint matches the design constraints. Cross-family replacements from the ATSAMD51 series may require firmware adaptation due to peripheral differences.