AT32UC3A4128S-C1UR

Microcontrollers Overview

The AT32UC3A4128S-C1UR is a 32-bit microcontroller based on the AVR32 UC RISC processor, operating at frequencies up to 84 MHz. It features 128 KB of internal high-speed Flash and 64 KB of SRAM directly coupled to the CPU local bus. The device includes an integrated AES encryption module supporting 128-bit to 256-bit keys. It provides a High-Speed USB 2.0 interface (480 Mbit/s) with embedded host capabilities and supports external memories via a dedicated External Bus Interface.

Microcontrollers Feature Summary

• Integrated Advanced Encryption System (AES) module for hardware-accelerated data security
• High-Speed USB 2.0 interface with flexible endpoint configuration and dedicated DMA channels
• Multi-layer bus system with Peripheral DMA Channels (PDCA) for efficient data transfers
• On-Chip Debug System (OCD) supporting Nexus Class 2+ non-intrusive trace

Microcontrollers Applications

• High-speed USB devices and embedded hosts
• SD/SDIO card interfaces and multimedia storage applications
• Audio processing systems utilizing I2S and audio bitstream DAC
• Secure communication devices requiring hardware encryption

Microcontrollers Procurement Notes

Verify the specific suffix C1UR corresponds to the VFBGA-100 package and industrial temperature range as documented in the official Microchip datasheet. Confirm that the 'S' designation indicates the inclusion of the AES module. Ensure compatibility with 3.3V I/O levels and 1.8V core voltage requirements during component sourcing.

Microcontrollers Selection Notes

Select this component when a 32-bit architecture with high computational throughput and integrated security is required. The AT32UC3A4 series offers reduced GPIO count compared to the A3 series but maintains full peripheral functionality in a smaller footprint. Consider the VFBGA-100 package constraints and ensure PCB layout supports the necessary decoupling capacitors for the internal voltage regulator.

Microcontrollers Part Context

This part belongs to the AT32UC3A4 family within the broader AT32UC3A3/A4 series. It shares architectural similarities with the AT32UC3A3 variants but differs in package options and GPIO availability. The A4 series specifically targets applications where a compact form factor is prioritized without sacrificing high-speed connectivity or processing power.

Microcontrollers Replacement Considerations

AT32UC3A4128S-ALUT: Identical functional specifications but utilizes a 144-pin LQFP package instead of the VFBGA-100.

Microcontrollers FAQ

Does the AT32UC3A4128S-C1UR include hardware encryption?

Yes, the 'S' suffix indicates the presence of an integrated Advanced Encryption System (AES) module capable of 128-bit, 192-bit, and 256-bit key algorithms.

What is the maximum operating frequency of this MCU?

The device supports clock frequencies up to 84 MHz when executing instructions from Flash with one wait-state.

Can this microcontroller function as a USB host?

Yes, it includes a High-Speed USB 2.0 interface with Embedded Host capabilities, allowing direct connection to devices like USB flash drives or printers.