ATSAM3X8CA-AU

Overview

The ATSAM3X8CA-AU is a 32-bit microcontroller based on the ARM Cortex-M3 processor, operating at a maximum frequency of 84 MHz. It features 512 Kbytes of embedded Flash memory and 96 Kbytes of SRAM (64 Kbytes + 32 Kbytes). The device includes a 12-bit ADC with 16 channels, two 12-bit DACs, an Ethernet MAC, two CAN controllers, and a High-Speed USB Mini Host/Device port. It operates within a voltage range of 1.62V to 3.6V and is housed in a 100-lead LQFP package.

Feature Summary

• High-performance 32-bit ARM Cortex-M3 core running up to 84 MHz
• Integrated Ethernet MAC and dual CAN controllers for networking
• Supports capacitive touch interfaces via QTouch library
• Multi-layer bus matrix with DMA for parallel task execution

Applications

• Industrial automation systems
• Home and building automation gateways
• Networking applications requiring Ethernet connectivity

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct package type and temperature rating. Confirm that the component meets all relevant RoHS and environmental standards required for the intended deployment environment before finalizing procurement.

Selection Notes

Select this model when high-speed data transfer capabilities are required alongside robust networking peripherals. The inclusion of both Ethernet and USB host/device functionality makes it suitable for complex gateway designs. Ensure the design accommodates the specific power supply sequencing requirements between VDDIO and VDDCORE.

Part Context

This component belongs to the SAM3X/A series of Flash microcontrollers from Microchip Technology. The series is designed for high-performance applications utilizing the ARM Cortex-M3 architecture. It offers scalable memory configurations and a comprehensive peripheral set tailored for industrial and networking environments.

Replacement Considerations

Consult official datasheets for cross-referencing with other SAM3X variants such as the ATSAM3X4C or ATSAM3A8C. Verify pin compatibility and memory size differences before substituting.