ATSAM3N1AA-AU

Overview

The ATSAM3N1AA-AU is a 32-bit microcontroller based on the ARM Cortex-M3 core, operating at a maximum frequency of 48MHz. It features 64KB of in-system programmable Flash memory and 8KB of SRAM. The device includes an 8-channel 10-bit analog-to-digital converter and supports multiple communication interfaces including I2C, SPI, UART/USART, and IrDA. Powered by a voltage range of 1.62V to 3.6V, it offers 34 general-purpose I/O pins and is housed in a 48-LQFP package suitable for surface mount applications across industrial temperature ranges.

Feature Summary

• ARM Cortex-M3 processor core with single-cycle multiplication and hardware division
• Integrated DMA controller for efficient data transfer management
• Multiple low-power modes including Stop, Wait, and Sleep for energy optimization
• Comprehensive peripheral set with PWM, watchdog timer, and brown-out detection

Applications

• Industrial control systems requiring robust processing and connectivity
• Consumer electronics utilizing low-voltage operation
• Smart home devices with sensor integration capabilities
• Medical equipment needing precise analog signal acquisition

Procurement Notes

Verify the specific suffix 'AU' indicates the industrial temperature grade and lead-free RoHS compliance when sourcing. Confirm the package type matches the 48-LQFP (7x7mm) footprint requirements for your PCB design. Ensure compatibility with the SAM3N series development tools and software frameworks provided by Microchip Technology for proper integration.

Selection Notes

Select this component when a balance of moderate code storage and high performance is required within a compact footprint. Consider the 48MHz clock speed for real-time processing tasks. Evaluate the available I/O count against interface needs. Compare against other SAM3N variants if different memory sizes or package options better suit the specific application constraints.

Part Context

This part belongs to the SAM3N family of 32-bit Flash microcontrollers designed for cost-sensitive applications. It shares architectural similarities with other SAM3N devices but differs in memory capacity and package configuration. The series targets embedded applications requiring reliable ARM Cortex-M3 performance without the complexity of higher-end families.

Replacement Considerations

The ATSAM3N1AB-MUR is a documented alternative within the same family, offering identical core specifications but differing in package type (QFN-48 vs LQFP-48) and potentially temperature grade. Verify pinout compatibility and thermal characteristics before substitution.