ATSAME51N20A-AF

Overview

The ATSAME51N20A-AF is a 32-bit microcontroller from the ATSAMD51 family, featuring an ARM Cortex-M4F core with a maximum clock frequency of 120 MHz. It integrates 1 MB of Flash memory and 256 KB of SRAM. The device provides 81 I/O pins and includes a 12-bit ADC. It operates within a voltage range of 1.71 V to 3.63 V and supports an industrial temperature range from -40°C to +85°C. The component is housed in a 100-TQFP package.

Feature Summary

• Features an ARM Cortex-M4F processor core with hardware floating-point unit for efficient signal processing.
• Integrates high-capacity non-volatile memory with 1 MB of Flash and 256 KB of static RAM.
• Includes multiple communication interfaces such as USB, CAN, SPI, I2C, and USART.
• Supports extended flash performance capabilities for enhanced code execution speed.

Applications

• Industrial control systems requiring robust processing and connectivity
• Medical devices needing precise analog-to-digital conversion
• Smart home appliances utilizing wireless communication protocols
• Automotive infotainment and body electronics modules

Procurement Notes

Verify the specific suffix 'AF' against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with existing PCB footprints for the 100-TQFP configuration. Cross-reference ordering information directly with the manufacturer's current datasheet to avoid discrepancies in revision levels or regional availability constraints.

Selection Notes

Select this model when a balance of high-performance computing and extensive peripheral integration is required. The 120 MHz Cortex-M4F core suits applications demanding real-time response. Consider the 1 MB Flash capacity for complex firmware requirements. Evaluate the 81 available I/O lines against system interface needs before finalizing the design choice.

Part Context

This component belongs to the ATSAMD51 series, designed for high-performance embedded applications. It shares architectural similarities with other members like the ATSAME51N20A-AU but differs in packaging and environmental specifications. The series emphasizes low power consumption while maintaining high throughput for IoT and industrial use cases.

Replacement Considerations

Direct substitutes include ATSAME51N20A-AU-EFP and ATSAME51N20A-AUT-EFP. Verify pinout compatibility and electrical characteristics before substitution. Alternative packages may require schematic and layout modifications.