ATSAM3S2BA-AUR

Overview

The ATSAM3S2BA-AUR is a 32-bit microcontroller based on the ARM Cortex-M3 core, operating at a maximum frequency of 64 MHz. It features 128 KB of in-system programmable Flash memory and 32 KB of SRAM. The device includes an internal oscillator and supports a supply voltage range of 1.62 V to 3.6 V. It offers 47 general-purpose I/O lines and integrates multiple communication interfaces including USB, SPI, I2C, UART/USART, SSC, and MMC. Analog capabilities consist of ten 12-bit ADC channels and two 12-bit DAC channels. The component is housed in a 64-LQFP package with dimensions of 10x10 mm and operates within a temperature range of -40°C to 85°C.

Feature Summary

• Integrates an ARM Cortex-M3 processor core for efficient 32-bit execution
• Includes embedded Flash memory for program storage and data retention
• Supports multiple serial communication protocols for peripheral connectivity
• Features integrated analog-to-digital and digital-to-analog converters

Applications

• Industrial control systems requiring robust processing
• Consumer electronics utilizing USB connectivity
• Medical devices needing precise analog signal conversion
• Automotive instrumentation applications

Procurement Notes

Verify the specific suffix AUR indicates tape and reel packaging when ordering. Confirm the manufacturer part number matches Microchip Technology specifications exactly. Check for any recent Product Change Notifications regarding assembly sites or marking changes. Ensure compatibility with existing PCB footprints for the 64-LQFP package. Validate that the required Flash and RAM capacities meet the application design constraints before procurement.

Selection Notes

Select this model when a balance of moderate Flash capacity and high-speed USB interface is required. Compare against other SAM3S variants if different pin counts or memory sizes are needed. Consider the 64 MHz clock speed relative to power consumption requirements. Verify that the 1.62 V to 3.6 V supply range aligns with the system power architecture. Evaluate the available I/O count against the total peripheral connections required.

Part Context

This component belongs to the SAM3S series of microcontrollers from Microchip Technology. The series utilizes the ARM Cortex-M3 architecture, providing a cost-effective solution for embedded applications. It is designed as a successor to legacy SAM7 products, offering improved performance and lower power consumption. The ATSAM3S2BA variant specifically targets applications requiring significant Flash memory and versatile connectivity options within a compact package.

Replacement Considerations

Consult official Microchip documentation for verified cross-reference part numbers. Ensure any substitute maintains identical pinout and electrical characteristics. Verify software compatibility if migrating between different memory configurations within the same family.