ATSAM3S4AA-AUR

Overview

The ATSAM3S4AA-AUR is a 32-bit microcontroller based on the ARM Cortex-M3 core, operating at a maximum frequency of 64 MHz. It features 256 KB of in-system programmable Flash memory and 48 KB of SRAM. The device supports a supply voltage range of 1.62 V to 3.6 V and includes an internal oscillator. Connectivity options include USB, SPI, I2C, USART, SSC, SDMMC, and EBI/EMI interfaces. It provides 79 general-purpose I/Os and integrates peripherals such as DMA, PWM, WDT, and ADCs with resolutions up to 12 bits.

Feature Summary

• Integrates an ARM Cortex-M3 processor core for efficient code execution and low power consumption.
• Includes extensive connectivity interfaces supporting USB, multiple serial protocols, and external memory access.
• Features built-in analog-to-digital converters and pulse width modulation for sensor interfacing and control applications.

Applications

• Industrial automation controllers
• Consumer electronics devices
• Medical equipment systems

Procurement Notes

Verify the specific suffix 'AUR' corresponds to the tape and reel packaging format required for automated assembly processes. Confirm that the 'AA' designation aligns with the intended industrial temperature range specifications for your application environment. Ensure compatibility with existing design tools and software frameworks provided by the manufacturer.

Selection Notes

Select this component when a balance of processing performance and peripheral richness is required within the SAM3S family. Consider the 100-pin LQFP package constraints for PCB layout if high pin count I/O is necessary. Evaluate power consumption profiles against the available sleep modes supported by the Cortex-M3 architecture.

Part Context

This part belongs to the Microchip SAM3S series of 32-bit Flash microcontrollers. The series is designed for cost-sensitive applications requiring robust performance. It shares architectural similarities with other SAM3 variants but offers specific memory and pin configurations tailored for mid-range embedded control tasks.

Replacement Considerations

Check for direct pin-compatible upgrades within the SAM3S series, such as the ATSAM3S4CA variant, which may offer different packaging or minor feature enhancements. Verify electrical characteristics and firmware compatibility before substituting with parts from other manufacturers.