ATSAM3U1EB-CU

Overview

The ATSAM3U1EB-CU is a 32-bit ARM Cortex-M3 microcontroller from the SAM3U series, operating at up to 96 MHz. It features 64 Kbytes of single-plane Flash memory and 20 Kbytes of embedded SRAM with dual banks. The device includes a High-Speed USB Device port with an embedded transceiver, supporting up to 7 bidirectional endpoints. Peripheral interfaces consist of three USARTs, one TWI, four SPI controllers, and one HSMCI for SD/MMC connectivity. It provides 57 I/O lines, a 12-bit ADC with four channels, and a 10-bit ADC with four channels.

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
• Multi-layer bus matrix architecture enabling parallel task execution
• Three software-selectable low-power modes: Sleep, Wait, and Backup

Applications

• Data loggers requiring high-speed data transfer capabilities
• PC peripherals utilizing USB connectivity
• High-speed bridge applications such as USB to SDIO or SPI bridges

Procurement Notes

Verify the specific suffix 'EB' against official Microchip documentation to confirm package type and temperature range, as standard datasheets primarily list 'E' (LQFP) and 'C' (BGA/LQFP) variants. Ensure compatibility with required voltage levels and interface configurations before procurement.

Selection Notes

Select this component for designs requiring a balance of processing power and integrated USB functionality within a compact footprint. Consider the 64 Kbyte Flash limit for firmware size and verify that the 57 available I/O lines meet the system's peripheral requirements.

Part Context

This device belongs to the Atmel | SMART SAM3U series of Flash microcontrollers based on the ARM Cortex-M3 core. The series is designed for applications demanding high speed and low power consumption, featuring extensive peripheral integration and flexible memory options across different package configurations.

Replacement Considerations

ATSAM3U1CB-CU

FAQ

What is the maximum operating frequency of the ATSAM3U1EB-CU?

The device operates at a maximum speed of 96 MHz.

Does the ATSAM3U1EB-CU support external memory expansion?

Yes, it includes a Static Memory Controller (SMC) supporting SRAM, NOR, and NAND flash via the External Bus Interface.