ATSAME51N19A-AFT

Overview

The ATSAME51N19A-AFT is a 32-bit ARM Cortex-M4F microcontroller from the Microchip SAM E51 family, operating at a maximum clock frequency of 120 MHz. It features 512 kB of Flash program memory and 192 kB of SRAM data memory within a 100-TQFP package. The device supports a supply voltage range of 1.71 V to 3.63 V and includes integrated peripherals such as USB, CAN, I2C, SPI, USART, and QSPI. It offers 81 general-purpose I/Os, 28-channel 12-bit ADCs, and two 12-bit DACs. Designed for automotive applications, it holds AEC-Q100 qualification with an extended industrial temperature range spanning from -40°C to +125°C.

Feature Summary

• Integrated ARM Cortex-M4F core with hardware floating-point unit for efficient digital signal processing
• Automotive-grade reliability certified under AEC-Q100 standards for harsh environment operation
• Comprehensive connectivity suite including USB Full-Speed and CAN bus interfaces
• High-resolution analog conversion capabilities with multiple 12-bit ADC channels

Applications

• Automotive body control modules and gateway systems
• Industrial motor drives and automation controllers
• Smart energy metering and utility infrastructure devices
• Medical equipment requiring robust real-time processing

Procurement Notes

Verify the specific suffix 'AFT' against official Microchip documentation to confirm the TQFP-100 package and extended temperature rating. Ensure compatibility with required interface protocols such as CAN and USB before integration. Confirm that the selected variant meets all AEC-Q100 requirements for your target automotive or industrial application environment.

Selection Notes

Select this component when high-performance processing is combined with automotive certification requirements. The 512 kB Flash and 192 kB RAM provide ample resources for complex firmware logic. The inclusion of CAN and USB interfaces simplifies system design for connected devices. Consider alternative packages if board space constraints differ from the TQFP-100 footprint.

Part Context

This microcontroller belongs to the SAM E51 series, which targets cost-sensitive automotive and industrial markets. It shares architectural similarities with the SAM D51 but adds automotive qualification and enhanced peripheral sets like CAN FD. The series emphasizes low power consumption while maintaining high throughput through the Cortex-M4F architecture.

Replacement Considerations

Direct substitutes include other members of the SAM E51 family with matching memory sizes, such as the ATSAME51N20A variants, provided pin compatibility and peripheral availability align with the design requirements.