ATSAM3S8CA-AUR

Overview

The ATSAM3S8CA-AUR is a 32-bit microcontroller based on the ARM Cortex-M3 core, operating at a maximum frequency of 64MHz. It features 512KB of in-system programmable flash memory and 64KB of SRAM. The device includes an internal oscillator and supports a supply voltage range of 1.62V to 3.6V. Connectivity options include USB, SPI, I2C, USART, SSC, IrDA, and EBI/EMI interfaces. It provides 79 general-purpose I/Os and integrates peripherals such as DMA, PWM, I2S, and watchdog timers. Data conversion capabilities consist of fifteen 10-bit or 12-bit ADC channels and two 12-bit DAC channels. The component is housed in a 100-LQFP package with an operating temperature range of -40°C to 85°C.

Feature Summary

• Integrates an ARM Cortex-M3 processor core for efficient 32-bit execution
• Includes extensive connectivity interfaces supporting USB, Ethernet via EBI, and standard serial protocols
• Features integrated analog-to-digital and digital-to-analog converters for signal processing
• Supports direct memory access and multiple timer/pulse-width modulation peripherals

Applications

• Industrial control systems requiring robust communication interfaces
• Consumer electronics utilizing USB connectivity
• Motor control applications leveraging PWM and ADC capabilities
• Data acquisition systems using high-resolution analog input channels

Procurement Notes

Verify the specific suffix 'AUR' corresponds to the tape and reel packaging format required for automated assembly processes. Confirm that the 'A' designation aligns with the intended industrial temperature grade specifications. Ensure compatibility with the 100-LQFP footprint dimensions during PCB layout finalization. Cross-reference the manufacturer's latest product change notices for any updates regarding assembly sites or marking changes.

Selection Notes

Select this component when a balance of moderate flash capacity and comprehensive peripheral set is needed for Cortex-M3 designs. It serves as a suitable upgrade path from smaller SAM3S variants like the ATSAM3S4CA series. Consider the availability of the tape and reel option for high-volume manufacturing efficiency compared to tray packages. Evaluate the 64MHz clock speed against application latency requirements relative to higher-performance SAM4S alternatives.

Part Context

This part belongs to the Microchip SAM3S family of 32-bit microcontrollers designed for cost-sensitive embedded applications. It shares architectural similarities with other SAM3S devices but offers specific memory and pin configurations. The 'AUR' suffix indicates a specific packaging variant within the broader ATSAM3S8CA product line, distinguishing it from tray-packaged equivalents like the ATSAM3S8CA-AU.

Replacement Considerations

The ATSAM3S8CA-AU is a functionally equivalent alternative available in tray packaging. For applications requiring higher performance, the ATSAM4S8CA-AUR offers a Cortex-M4 core with increased speed. Smaller memory variants such as the ATSAM3S4CA-AUR may suffice if storage requirements are lower.