ATSAMD51N20A-AU

Overview

The ATSAMD51N20A-AU is a 32-bit microcontroller from the SAM D51 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 within a 100-TQFP package. The device supports a supply voltage range of 1.71 V to 3.6 V and operates between -40°C and +85°C. Key peripherals include 28-channel 12-bit ADCs, 2-channel 12-bit DACs, and interfaces such as USB, SPI, I2C, USART, and LIN.

Feature Summary

• Integrated floating-point unit (FPU) for efficient mathematical processing
• USB Full-Speed controller supporting device and host modes
• High-resolution analog-to-digital conversion capabilities
• Advanced connectivity via multiple serial communication protocols

Applications

• Industrial control systems requiring precise analog signal acquisition
• Consumer electronics utilizing USB connectivity
• Automotive applications meeting AEC-Q100 qualification standards
• Smart home devices needing robust embedded control

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to ensure correct package type and temperature rating. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Cross-reference the datasheet revision history for any silicon errata or functional clarifications relevant to this specific part number before finalizing procurement.

Selection Notes

Select this component when a balance of high-performance computing and extensive analog peripherals is required in a compact form factor. The 100-pin TQFP package offers ample I/O availability for complex system integration. Ensure design constraints align with the 120 MHz operational speed and the specific voltage regulation needs of the 1.71 V to 3.6 V operating range.

Part Context

This microcontroller belongs to the SAM D51 series, designed for cost-sensitive yet performance-demanding applications. It shares architectural similarities with other SAM D5x devices but is distinguished by its specific memory configuration and pin count. The series emphasizes low power consumption while delivering significant computational throughput through its Cortex-M4F core.

Replacement Considerations

Consult official substitution guides for compatible parts within the SAM D51 family. Verify pin compatibility and memory size differences when considering alternatives like the ATSAMD51J19A or ATSAMD51P19A.