ATSAME51J19A-MU

Overview

The ATSAME51J19A-MU is an ARM microcontroller from the ATSAME51 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 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 QFN package and is qualified under AEC-Q100 standards for automotive applications.

Feature Summary

• Integrated ARM Cortex-M4F processor core with hardware floating-point support
• Automotive-grade qualification compliant with AEC-Q100 standards
• Comprehensive peripheral set including CAN bus and LIN interface controllers
• High-resolution analog-to-digital conversion capabilities

Applications

• Automotive body electronics and control modules
• Industrial motor control systems
• Smart energy metering devices
• Medical instrumentation requiring high reliability

Procurement Notes

Verify the specific suffix 'MU' corresponds to the QFN-64 package configuration during sourcing. Confirm that the AEC-Q100 qualification status meets your project's automotive grade requirements. Ensure compatibility with the 1.71 V to 3.6 V operating voltage range for your power design. Check for any recent Product Change Notifications regarding packaging or labeling updates.

Selection Notes

Select this model when a robust automotive-grade MCU with significant flash memory is required. The inclusion of CAN and LIN interfaces makes it suitable for networked vehicle subsystems. Consider the 120 MHz processing speed for complex control algorithms. Verify that the 64-pin QFN footprint fits your PCB layout constraints compared to TQFP alternatives.

Part Context

This component belongs to the Microchip ATSAME51 family, which targets high-performance embedded applications. The J19 variant specifically denotes the 512 kB Flash and 192 kB RAM configuration within the series. It shares architectural similarities with other SAM D51/E51 devices but offers distinct memory sizes and package options tailored for different form factors.

Replacement Considerations

ATSAME51J19A-AU serves as a pin-compatible alternative in a TQFP-64 package. ATSAMD51J19A-MU is functionally similar but lacks the explicit automotive qualification designation.