ATSAM3A4CA-CU

Overview

The ATSAM3A4CA-CU is a 32-bit ARM Cortex-M3 microcontroller from the SAM3A series, operating at up to 84 MHz. It features 256 Kbytes of embedded Flash and 64 Kbytes of SRAM. The device includes a USB 2.0 Mini Host/Device port, two CAN controllers, an Ethernet MAC, and multiple communication interfaces including USARTs, SPI, and TWI. It operates within a voltage range of 1.62V to 3.6V and is housed in a 100-lead LQFP package.

Feature Summary

• Integrates a high-performance 32-bit ARM Cortex-M3 processor with Memory Protection Unit
• Supports capacitive touch implementation via QTouch library for user interface applications
• Features multi-layer bus matrix and DMA channels for parallel task execution and high data throughput
• Includes dedicated hardware peripherals for networking such as Ethernet MAC and dual CAN controllers

Applications

• Industrial automation systems
• Home and building automation gateways
• Networking equipment requiring USB host/device capabilities

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct package type and temperature grade. Confirm RoHS compliance status and lead-free specifications prior to procurement. Cross-reference the component marking code with official datasheet pinout diagrams to prevent installation errors during assembly.

Selection Notes

Select this component when a balance of processing speed and peripheral integration is required for embedded control tasks. The 100-pin LQFP package offers a suitable footprint for designs needing extensive I/O without excessive board space. Ensure power supply design accommodates the specified voltage ranges for VDDCORE and VDDIO pins.

Part Context

This microcontroller belongs to the SAM3A family, which shares architectural similarities with the SAM3X series but targets specific market segments. It provides a cost-effective solution for applications requiring robust connectivity options like Ethernet and CAN while maintaining low power consumption through selectable sleep and backup modes.

Replacement Considerations

ATSAM3A8CA-CU

FAQ

Does the ATSAM3A4CA-CU support NAND Flash operations?

No, the SAM3A4C configuration does not include a NAND Flash Controller (NFC). This feature is available only on the SAM3X8E variant.

What is the maximum clock frequency for this device?

The ARM Cortex-M3 core operates at a maximum frequency of 84 MHz.