ATSAME54N19A-AU-EFP

Overview

The ATSAME54N19A-AU-EFP is a 32-bit microcontroller from the Microchip SAM E54 series, featuring an ARM Cortex-M4F core operating at 120 MHz. It integrates 512 KB of flash memory and 192 KB of RAM within a 64-TQFP package. The device supports a supply voltage range of 1.71 V to 3.63 V and operates between -40°C and +85°C. Key peripherals include up to 49 I/O lines, multiple communication interfaces such as CAN, Ethernet, USB, and SPI, alongside 12-bit ADCs and DACs.

Feature Summary

• Integrates an ARM Cortex-M4F processor with hardware floating-point unit for efficient signal processing.
• Includes comprehensive connectivity options supporting industrial protocols like CANbus, LINbus, and Ethernet.
• Features high-resolution analog conversion capabilities with multiple 12-bit ADC channels and dual 12-bit DACs.

Applications

• Industrial automation controllers requiring robust communication interfaces
• Smart energy metering systems utilizing precise analog measurement
• IoT gateways and edge devices needing secure data processing

Procurement Notes

Verify the complete part number including suffixes against official Microchip documentation to ensure correct package type and temperature grade. Confirm RoHS compliance status through current datasheets or PCN notices. Cross-reference distributor listings with manufacturer databases to validate authenticity and avoid counterfeit components during sourcing.

Selection Notes

Select this component when design requirements demand a balance of processing power and peripheral density in a compact TQFP form factor. Consider the specific pin count limitations of the 64-pin package against application I/O needs. Evaluate the 120 MHz clock speed suitability for real-time control loops and protocol handling overheads compared to lower-speed alternatives.

Part Context

This MCU belongs to the SAM E54 family, designed for security and connectivity applications. It shares architectural similarities with other SAM E5x variants but differs in memory size and package options. The family emphasizes cryptographic acceleration and low-power operation modes suitable for battery-constrained embedded systems.

Replacement Considerations

Consult Microchip's official cross-reference tools for verified equivalents. Potential substitutes may include other SAM E54 variants with different memory capacities or packages, provided pin compatibility and performance metrics align with the original design specifications.