ATSAM3N0AA-AUR

Overview

The ATSAM3N0AA-AUR is a 32-bit microcontroller based on the ARM Cortex-M3 core, operating at a maximum frequency of 48 MHz. It features 32 KB of embedded Flash memory and 8 KB of SRAM. The device includes an internal oscillator and supports a supply voltage range of 1.62 V to 3.6 V. Connectivity options include I2C, IrDA, SPI, and UART/USART interfaces. It provides 34 general-purpose I/O pins and integrates eight 10-bit ADC channels. Peripherals encompass DMA, PWM, WDT, POR, and BOD. The component is housed in a 48-LQFP package with dimensions of 7x7 mm and operates within a temperature range of -40°C to 85°C.

Feature Summary

• Integrates ARM Cortex-M3 processor with Thumb-2 instruction set for efficient code execution
• Includes embedded voltage regulator enabling single-supply operation
• Features pin-to-pin compatibility with SAM7S and SAM3S legacy products
• Provides hardware security mechanisms including power-on-reset and brown-out detection

Applications

• Industrial control systems requiring robust peripheral integration
• Consumer electronics utilizing low-power ARM-based processing
• Smart metering applications with analog input requirements
• Communication devices supporting serial interface protocols

Procurement Notes

Verify the specific suffix 'AUR' corresponds to the tape-and-reel packaging format rather than tray distribution. Confirm that the ordering part number matches the exact memory configuration of 32 KB Flash and 8 KB SRAM. Ensure compliance with RoHS directives as indicated by manufacturer documentation. Cross-reference the datasheet revision to validate current electrical characteristics and timing parameters before finalizing procurement specifications.

Selection Notes

Select this component when a balance of moderate program storage and high-speed processing is required for cost-sensitive designs. The 48 MHz clock speed suits applications needing real-time response without excessive power consumption. Consider the 48-LQFP package for surface-mount assembly constraints. Evaluate the available I/O count against system interface needs to ensure sufficient connectivity for sensors and communication buses.

Part Context

This microcontroller belongs to the Microchip SAM3N series, designed for applications demanding high performance and low power consumption. The series utilizes the ARM Cortex-M3 architecture, offering a scalable solution for embedded control tasks. The ATSAM3N0AA variant specifically targets markets requiring reliable data processing with integrated analog capabilities, fitting into the broader portfolio of 32-bit ARM MCUs from the manufacturer.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.