ATSAME54P19A-AU

Overview

The ATSAME54P19A-AU is a 32-bit microcontroller from the SAM E54 series, featuring an 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. The device provides 99 general-purpose I/Os and supports a supply voltage range of 1.71 V to 3.6 V. It integrates multiple communication interfaces including USB, Ethernet, CANbus, SPI, I2C, UART/USART, LINbus, QSPI, MMC/SD, I2S, IrDA, and EBI/EMI. Analog capabilities include 32 channels of 12-bit ADC and two 12-bit DACs. The component is qualified under AEC-Q100 standards for automotive applications and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Automotive-grade reliability certified by AEC-Q100 qualification standards
• Integrated floating-point unit in the ARM Cortex-M4F processor core
• Comprehensive connectivity suite supporting Ethernet, USB, and CANbus protocols
• High-resolution analog conversion with 32-channel 12-bit ADC inputs

Applications

• Automotive infotainment systems requiring robust data processing
• Industrial motor control applications utilizing PWM and high-speed timers
• Smart home devices leveraging integrated wireless and wired connectivity options
• Medical equipment needing precise analog signal acquisition and processing

Procurement Notes

Verify the specific suffix configuration against official Microchip documentation to ensure correct package type and temperature rating. Confirm that the AEC-Q100 automotive qualification aligns with your project's reliability requirements. Check for any recent Product Change Notifications regarding assembly sites or material composition updates. Ensure compatibility with your existing PCB footprint for the TQFP-128 package before finalizing procurement orders.

Selection Notes

Select this model when automotive certification is mandatory alongside high-performance computing needs. The 512 kB flash size suits complex firmware implementations without excessive cost. Consider the 192 kB RAM limit for application memory requirements. Evaluate the extensive peripheral set against interface needs to avoid over-specifying components. Compare against the ATSAME54P20A variant if larger memory capacity is required for future scalability.

Part Context

This component belongs to the SAM E54 family, designed for high-performance embedded applications. It shares architectural similarities with the SAM D5x series but adds automotive qualification and enhanced security features. The family targets markets demanding reliable operation in harsh environments. It complements other Microchip solutions by providing a scalable platform for upgrading legacy designs to modern connectivity standards.

Replacement Considerations

ATSAME54P20A-AU offers increased memory capacity while maintaining pin compatibility. ATSAMD51P19A-AU provides similar performance but lacks automotive qualification. Verify electrical specifications and software compatibility before substituting these alternatives.