ATSAM3S1CA-AU

Overview

The ATSAM3S1CA-AU 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 with a maximum clock frequency of 64 MHz and supports a 32-bit data bus width. It includes a 12-bit ADC with 15 channels and provides 79 I/O pins in a QFP-100 package. Power supply ranges from 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.

Feature Summary

• Integrates an ARM Cortex-M3 processor core for efficient code execution.
• Includes on-chip Flash memory for non-volatile program storage.
• Supports multiple communication interfaces including SPI, UART, and RS-485.
• Features a 12-bit Analog-to-Digital Converter with multiple input channels.

Applications

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

Procurement Notes

Verify component authenticity through authorized Microchip distributors or certified suppliers. Confirm RoHS compliance status via official documentation before integration. Check for obsolescence notices as this part may have limited availability. Ensure packaging integrity matches industrial standards for surface-mount assembly processes.

Selection Notes

Select this model when a 64 kB Flash capacity and 16 kB RAM suffice for application requirements. Consider the QFP-100 package constraints for PCB layout design. Evaluate power consumption against the 1.62 V to 1.9 V operating range. Compare peripheral counts like the 15-channel ADC against specific sensor interface needs.

Part Context

This component belongs to the Microchip SAM3S family, designed for cost-effective embedded solutions. It utilizes the ARM Cortex-M3 architecture, balancing processing power with energy efficiency. The series targets applications demanding reliable performance in compact form factors, serving as a foundational choice for various microcontroller-based designs.

Replacement Considerations

Consult Microchip documentation for direct pin-compatible alternatives within the SAM3S series. Verify memory sizes and peripheral sets match original specifications. Cross-reference package dimensions to ensure mechanical fit without redesigning the footprint.

FAQ

What is the maximum operating frequency of the ATSAM3S1CA-AU?

The maximum clock frequency is 64 MHz.

Does the ATSAM3S1CA-AU support USB connectivity?

No, the standard ATSAM3S1CA-AU does not include a USB controller; it supports SPI, UART, and RS-485.