ATSAM3S1CA-AUR

Overview

The ATSAM3S1CA-AUR is an ARM Cortex-M3 microcontroller from the SAM3S series, manufactured by Microchip Technology. It features a 64 kB Flash program memory and 16 kB SRAM data RAM. The device operates at a maximum clock frequency of 64 MHz with a 32-bit data bus width. It includes a 12-bit ADC with 15 channels and provides 79 I/O pins. The supply voltage range is 1.62 V to 1.9 V for digital logic, with an analog supply of 3.3 V. Operating temperatures span from -40°C to +85°C. The component is housed in a QFP-100 package.

Feature Summary

• Integrates an ARM Cortex-M3 processor core for efficient 32-bit execution.
• Includes on-chip Flash memory for non-volatile program storage.
• Supports multiple communication interfaces including SPI, UART, and RS-485.
• Features integrated analog-to-digital conversion capabilities.

Applications

• Industrial control systems requiring robust processing
• Consumer electronics utilizing low-power ARM architectures
• Embedded applications needing serial communication protocols

Procurement Notes

Verify the specific suffix 'AUR' indicates tape and reel packaging versus the 'AU' tray variant. Confirm current availability status as some sources list this part as obsolete or end-of-life. Ensure compatibility with existing PCB footprints for the QFP-100 package. Check for any recent Product Change Notifications regarding assembly sites or marking changes.

Selection Notes

Select this model when 64 kB Flash and 16 kB RAM are sufficient for application requirements. Consider the 64 MHz speed limit compared to higher-performance SAM4S variants. Verify that the 1.62 V to 1.9 V operating voltage range aligns with system power rails. Ensure the QFP-100 package fits within mechanical constraints.

Part Context

This component belongs to the Microchip SAM3S family, which utilizes the ARM Cortex-M3 core. It is distinct from the SAM3N series (lower pin counts) and SAM3XA series (higher performance). The ATSAM3S1CA-AUR specifically denotes the 64 kB Flash variant in the CA sub-series, packaged in QFP-100 format.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific component were not found in the provided documentation.