ATSAME51J19A-MF

Overview

The ATSAME51J19A-MF is an ARM microcontroller from the Microchip SAM E51 series, featuring a 32-bit ARM 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/Os and supports multiple communication interfaces including CAN, LIN, I2C, SPI, and USART. It integrates 24-channel 12-bit ADCs and 2-channel 12-bit DACs. Operating within a voltage range of 1.71 V to 3.6 V, it is qualified under AEC-Q100 standards for automotive applications and functions reliably between -40°C and +85°C in a compact 64-lead QFN package.

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 analog subsystem featuring high-resolution ADCs and DACs for sensor interfacing
• Robust connectivity suite supporting CAN, LIN, and standard serial protocols

Applications

• Automotive body control modules and gateway systems
• Industrial motor drives and automation controllers
• Smart home appliances and IoT edge devices
• Medical instrumentation requiring precise analog signal acquisition

Procurement Notes

Verify the specific suffix 'MF' against official Microchip documentation to confirm the exact package type and tape-and-reel specifications, as datasheets may primarily list the AU or MU variants. Ensure compliance with RoHS directives and check for any recent Product Change Notifications regarding assembly sites or marking changes before finalizing procurement orders.

Selection Notes

Select this component when automotive reliability is required alongside high-performance computing capabilities. The inclusion of the FPU makes it suitable for complex algorithms compared to non-FPU variants. Consider the 512 kB Flash size for larger firmware requirements and verify that the 64-pin QFN footprint fits the target PCB layout constraints.

Part Context

This part belongs to the SAM E51 family, designed specifically for automotive and industrial markets. It shares architectural similarities with the SAM D51 but adds automotive qualification and enhanced peripheral sets. The J19 designation indicates the specific memory configuration and pin count within the broader E51 ecosystem.

Replacement Considerations

ATSAME51J19A-AU (TQFP package), ATSAMD51J19A-MU (Non-automotive QFN variant). Verify software compatibility and physical footprint differences when substituting.