ATSAMG51N18A-AU

Overview

The ATSAMG51N18A-AU is a 32-bit microcontroller from Microchip Technology's SAM G51 series, featuring an ARM Cortex-M4 core with a floating-point unit. It operates at a maximum frequency of 48MHz and includes 256KB of Flash memory and 64KB of SRAM. The device provides 8 channels of 12-bit ADC input and supports multiple communication interfaces including I2C, SPI, UART, and USART. Powered by a supply voltage ranging from 1.62V to 3.6V, it is housed in a 100-LQFP (14x14) package suitable for surface-mount applications.

Feature Summary

• Integrates an ARM Cortex-M4 processor with hardware floating-point acceleration for efficient signal processing tasks.
• Provides versatile peripheral connectivity through standard serial communication protocols such as SPI, I2C, and UART/USART.
• Includes analog-to-digital conversion capabilities with multiple 12-bit resolution channels for sensor interfacing.

Applications

• Industrial control systems requiring real-time processing
• Consumer electronics utilizing low-power embedded controllers
• Sensor interface modules for data acquisition

Procurement Notes

Verify the specific suffix 'AU' corresponds to the RoHS-compliant lead-free variant and the 100-LQFP package configuration. Confirm that the operating temperature range meets your environmental requirements. Ensure compatibility with existing development tools and debuggers designed for the SAM G51 family before finalizing procurement decisions.

Selection Notes

Select this component when a balance of moderate processing speed and extensive I/O options is required. The 48MHz clock speed suits applications not demanding high-frequency computation but needing reliable peripheral management. Consider the 256KB Flash capacity for firmware size constraints and evaluate if the 64KB RAM suffices for buffer requirements.

Part Context

This part belongs to the SAM G51 series, which targets general-purpose embedded applications. It shares architectural similarities with other SAM D and E series devices but offers distinct peripheral sets optimized for cost-sensitive markets. The G51 series emphasizes energy efficiency and ease of integration into compact designs.

Replacement Considerations

Direct substitutes within the same package and pinout include other variants in the SAM G51 family with differing memory sizes, such as the ATSAMG51J18A-AU. Cross-family replacements like the ATSAMD51 series require careful evaluation of pin compatibility and peripheral differences.