ATSAM3N2BA-AU

Overview

The ATSAM3N2BA-AU is a 32-bit microcontroller based on the ARM Cortex-M3 core, operating at a maximum frequency of 48MHz. It features 128KB of in-system programmable flash memory and 16KB of SRAM. The device includes an internal oscillator and supports a supply voltage range of 1.62V to 3.6V. Connectivity options include I2C, IrDA, SPI, and UART/USART interfaces. It provides 47 general-purpose I/O lines and integrates peripherals such as DMA, PWM, WDT, and brown-out detection/reset circuits.

Feature Summary

• Integrates an ARM Cortex-M3 processor core for efficient 32-bit execution
• Includes built-in analog-to-digital and digital-to-analog converters
• Supports multiple serial communication protocols including SPI and USART
• Features hardware-based power management and watchdog timer capabilities

Applications

• Industrial control systems requiring low-power processing
• Consumer electronics with limited pin count constraints
• Embedded sensor interface modules
• Battery-powered devices utilizing low-voltage operation

Procurement Notes

Verify component authenticity through authorized Microchip Technology distributors or certified suppliers. Confirm package integrity and absence of physical damage upon receipt. Ensure compliance with RoHS3 specifications as documented in official datasheets. Validate part markings against the specific ATSAM3N2BA-AU designation to prevent counterfeit substitution during assembly processes.

Selection Notes

Select this component when a balance of moderate flash capacity and minimal pin count is required. The 64-LQFP package suits space-constrained designs. Consider the 48MHz speed limit for timing-sensitive applications. Evaluate peripheral availability against project requirements before finalizing selection within the SAM3N family.

Part Context

This unit belongs to the SAM3N series of microcontrollers designed for cost-sensitive and pin-count-limited applications. It shares architectural similarities with other SAM3N variants but distinguishes itself through its specific 128KB flash configuration. The series targets embedded markets needing reliable ARM Cortex-M3 performance without complex external memory interfaces.

Replacement Considerations

Consult official Microchip documentation for verified cross-references. No direct substitute part numbers are confirmed in the provided source material.