AT32UC3A3256S-ALUT

Microcontrollers Overview

The AT32UC3A3256S-ALUT is a 32-bit microcontroller from the AVR32 UC3 A3 series, manufactured by Microchip Technology. It features an AVR32 RISC core with up to 1.51 DMIPS/MHz performance and operates at frequencies up to 84 MHz. The device includes 256 KB of internal high-speed Flash memory and 64 KB of SRAM connected to the CPU local bus, plus 64 KB on the multi-layer bus system. It integrates a hardware AES encryption module, High-Speed USB 2.0 interface, and supports external memories via EBI. The component is housed in a 144-pin LQFP package.

Microcontrollers Feature Summary

• Integrates a hardware Advanced Encryption System (AES) module supporting 128-bit, 192-bit, and 256-bit key algorithms for secure data processing.
• Features a High-Speed USB 2.0 interface capable of 480 Mbit/s transfers with dedicated DMA channels for flexible endpoint configuration.
• Includes a Multi-Layer Bus System with Peripheral Direct Memory Access (PDCA) to optimize continuous data stream transfers without processor involvement.
• Supports extensive external memory interfaces including SDRAM, NAND Flash, and Compact Flash via the External Bus Interface.

Microcontrollers Applications

• High-speed USB devices and embedded host applications
• Secure communication systems requiring hardware encryption
• Mass storage bridge controllers for SD/MMC and USB interfaces
• Audio processing applications utilizing I2S and audio bitstream DAC

Microcontrollers Procurement Notes

Verify the specific suffix 'ALUT' corresponds to the 144-pin LQFP package variant when sourcing. Confirm that the 'S' designation indicates the inclusion of the AES module, as this distinguishes it from non-AES variants within the same memory capacity family. Ensure compatibility with the required operating voltage range and environmental specifications for the intended deployment environment.

Microcontrollers Selection Notes

Select this component for designs requiring high-performance 32-bit processing combined with robust security features. The integrated AES engine eliminates the need for external cryptographic hardware. Consider the available GPIO count and peripheral set against application requirements. Evaluate the power consumption characteristics relative to the system's battery or thermal constraints.

Microcontrollers Part Context

This part belongs to the AT32UC3A3/A4 family of 32-bit microcontrollers based on the AVR32 architecture. The family is designed for cost-sensitive embedded applications emphasizing low power consumption and high code density. Variants differ primarily in Flash size, GPIO count, and package type, while sharing the core processor and peripheral architecture.

Microcontrollers Replacement Considerations

Direct replacements within the same package and pinout include other AT32UC3A3256 variants such as the AT32UC3A3256S-CTUR (FFBGA package) or AT32UC3A3256-CTUR. Cross-package substitutions require schematic redesign due to differing pin configurations.