ATSAM3U1EA-CU

Overview

The ATSAM3U1EA-CU is a 32-bit ARM Cortex-M3 microcontroller operating at up to 96 MHz. It features 64 Kbytes of single-plane Flash memory and 20 Kbytes of embedded SRAM. The device includes a High-Speed USB Device port, four USARTs, one TWI, four SPI interfaces, and an External Bus Interface with NAND Flash controller support. It operates within a voltage range of 1.62V to 3.6V and is housed in a 144-lead LQFP package.

Feature Summary

• High-performance 32-bit ARM Cortex-M3 processor core running at up to 96 MHz
• Integrated High-Speed USB Device port with embedded transceiver for data communication
• Supports multiple low-power modes including Sleep, Wait, and Backup for optimized energy consumption
• Includes extensive peripheral set such as USART, SPI, TWI, ADC, and External Bus Interface

Applications

• Data loggers requiring high-speed data transfer capabilities
• PC peripherals utilizing USB connectivity
• High-speed bridge applications converting between USB and other interfaces like SDIO or SPI

Procurement Notes

Verify the specific suffix EA against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with existing design constraints regarding pinout and power supply requirements before procurement.

Selection Notes

Select this component when a balance of processing speed and peripheral integration is required for USB-based applications. Consider the 144-pin package size and available I/O lines relative to system complexity and memory needs for optimal fit.

Part Context

Part of the Atmel SMART SAM3U series, which utilizes the ARM Cortex-M3 architecture. This family targets applications needing robust real-time control and high-speed data handling, bridging consumer electronics and industrial automation sectors through versatile interface options.

Replacement Considerations

Consult official Microchip documentation for cross-references. Verify electrical characteristics and pin compatibility if substituting with other SAM3U variants.