ATSAME54P19A-AUT-EFP

Overview

The ATSAME54P19A-AUT-EFP is a 32-bit microcontroller from the SAM E54 family, featuring an ARM Cortex-M4F core with a floating-point unit. It operates at a maximum frequency of 120 MHz and includes 512 kB of flash memory and 192 kB of SRAM. The device supports a supply voltage range of 1.71 V to 3.63 V and offers 99 general-purpose I/Os. It integrates multiple communication interfaces including Ethernet, USB, CAN, SPI, I2C, and USART. The component is qualified to AEC-Q100 standards for automotive applications and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Automotive-grade qualification compliant with AEC-Q100 standards for reliability in vehicle environments
• Integrated Ethernet MAC with dedicated DMA controller for high-speed network connectivity
• Built-in floating-point unit (FPU) on the Cortex-M4F core for accelerated mathematical processing
• Comprehensive peripheral set including USB OTG, CAN FD, and multiple serial communication buses

Applications

• Automotive body control modules and gateway systems
• Industrial motor drives requiring precise timing and control
• Smart energy metering devices with secure communication needs
• Medical equipment requiring robust data acquisition and processing

Procurement Notes

Verify the complete part number against official Microchip documentation to ensure correct suffixes for package type, temperature grade, and tape-and-reel configuration. Confirm that the specific revision matches your design requirements. Check for any recent Product Change Notifications regarding packaging or material composition updates before finalizing procurement orders.

Selection Notes

Select this component when automotive certification is mandatory alongside high-performance computing capabilities. The combination of Ethernet connectivity and FPU support distinguishes it from lower-tier SAM E5x variants. Ensure the 192 kB RAM allocation meets application stack requirements. Consider pin compatibility if migrating from other TQFP-128 packages within the same family.

Part Context

This microcontroller belongs to the SAM E54 series, designed for demanding embedded applications. It shares architectural similarities with the SAM D5x/E5x families but adds automotive qualification and enhanced security features. The device targets markets requiring reliable operation under varying environmental conditions while maintaining low power consumption profiles typical of modern ARM-based MCUs.

Replacement Considerations

ATSAME54P19A-AU serves as a non-automotive equivalent with identical electrical specifications but lacks AEC-Q100 certification. ATSAME54P20A-AUT-EFP offers increased flash capacity (1 MB) while retaining the same core and interface suite. Verify pinout compatibility and software library support when substituting these variants.