ATSAM3U2EA-CU

Overview

The ATSAM3U2EA-CU is a 32-bit ARM Cortex-M3 microcontroller operating at up to 96 MHz. It features 128 Kbytes of Flash memory and 36 Kbytes of SRAM. The device includes a High-Speed USB Device port, four USARTs, two TWIs, five SPIs, and an External Bus Interface with NAND Flash controller. It operates from 1.62V to 3.6V and supports low-power modes including Sleep, Wait, and Backup.

Feature Summary

• High-performance 32-bit ARM Cortex-M3 processor running at up to 96 MHz
• Integrated High-Speed USB Device port with embedded transceiver
• External Bus Interface supporting SRAM, NOR, and NAND Flash memories
• Multi-layer bus matrix with PDC and DMA channels for high-speed data transfers

Applications

• Data loggers
• PC peripherals
• High-speed bridge applications (USB to SDIO, SPI, or External Bus Interface)

Procurement Notes

Verify the specific package type required, as the SAM3U2E series is available in both 144-lead LQFP and 144-ball LFBGA configurations. Confirm that the 'EA' suffix corresponds to the intended industrial temperature range and packaging variant before finalizing orders. Ensure compatibility with existing schematic designs regarding pin assignments and power supply requirements.

Selection Notes

Select this component when a balance of processing power and peripheral integration is needed for USB-centric designs. The 128 Kbyte Flash and 36 Kbyte SRAM provide sufficient resources for complex firmware while maintaining cost efficiency. Consider the External Bus Interface if external memory expansion beyond internal limits is required for the application.

Part Context

The ATSAM3U2EA-CU belongs to the Atmel SMART SAM3U series, which utilizes the ARM Cortex-M3 core. This family is designed for applications requiring high-speed data throughput and robust connectivity options. The SAM3U series distinguishes itself with dedicated hardware for USB communication and flexible memory interfacing capabilities.

Replacement Considerations

ATSAM3U2CA-CU

FAQ

What are the supported low-power modes for the ATSAM3U2EA-CU?

The device supports three software-selectable low-power modes: Sleep, Wait, and Backup.

Does the ATSAM3U2EA-CU include an External Bus Interface?

Yes, it includes an External Bus Interface with Static Memory Controller and NAND Flash controller support.