AT91SAM9XE256B-CU

The AT91SAM9XE256B-CU is a single-core, 32-bit microprocessor based on the ARM926EJ-S core running at 180 MHz. It integrates on-chip FLASH, ROM and SRAM with a broad peripheral set including Ethernet, USB and multiple serial interfaces to support embedded system designs.

Targeted for industrial embedded applications, the device delivers system-level integration and flexible memory and external bus support for designs that require networking, storage interfaces and display or imaging connectivity within a compact 217-ball LFBGA (15×15) package.

Key Features

• Core and Performance ARM926EJ-S 32-bit core at 180 MHz with MMU, instruction and data caches and DSP/Jazelle extensions; documented at up to 200 MIPS at 180 MHz.
• Embedded Memory Internal memory configuration for the SAM9XE256 variant: 256 KB internal Flash, 32 KB internal SRAM and 32 KB ROM for boot and system code.
• External Memory Interface (EBI/EMI) External Bus Interface supports SDRAM and static memories, enabling expansion of system memory and integration with external storage devices.
• Connectivity Integrated 10/100 Mbps Ethernet MAC with dedicated FIFOs and DMA channels plus USB 2.0 Full Speed device port and USB host ports (dual host capability in the 217-ball LFBGA package).
• Peripheral Set Multiple serial and system peripherals including six UARTs, SPI, TWI, Timer/Counters, Synchronous Serial Controller, ADC and MultiMedia/SD Card Interface for broad I/O and sensor connectivity.
• Image and Display Interfaces Image Sensor Interface (ISI) supporting ITU-R BT.601/656 and display controller support for LCD and touchscreen interfaces.
• System Reliability and Boot On-chip features include EmbeddedICE debug support, watchdog, brownout detector and flash security/lock bits for firmware protection.
• Package and Temperature 217-LFBGA (15×15) surface-mount package with industrial operating temperature range of −40 °C to 85 °C.
• Standards Compliance RoHS compliant material status.

Typical Applications

• Industrial Control and Automation Use the integrated Ethernet, multiple serial interfaces and robust operating temperature range to build networked controllers and HMIs for factory environments.
• Networking and Communications On-chip 10/100 Mbps Ethernet and USB host/device support enable gateway, router or edge networking modules with local storage and peripheral connectivity.
• Human-Machine Interfaces (HMI) LCD and touchscreen controller support plus ample peripheral bandwidth make the device suitable for interactive operator panels and display-driven interfaces.
• Imaging and Vision Front-Ends The Image Sensor Interface (ISI) allows capture and processing of camera input for inspection, vision or sensor fusion applications when combined with external memory via EBI.
• Embedded Storage and Multimedia Integrated MultiMedia/SD Card interface with internal flash and external SDRAM support for applications requiring local media storage.

Unique Advantages

• Integrated Networking and USB: Built-in Ethernet MAC and USB 2.0 device/host capability reduce external PHY and controller requirements for connected products.
• Balanced On-chip Memory: 256 KB internal Flash with 32 KB SRAM and 32 KB ROM provides immediate code and data storage while simplifying BOM for many embedded designs.
• Flexible External Memory Expansion: EBI/EMI and SDRAM support let designers scale system memory and interface with a variety of external storage components.
• Industrial Temperature Range: Rated from −40 °C to 85 °C for deployment in industrial environments where extended temperature tolerance is required.
• Compact High-density Package: 217-LFBGA (15×15) delivers a small footprint for space-constrained boards while providing the pin-count needed for rich peripheral connectivity.
• System-level Reliability Features: On-chip watchdog, brownout detection and flash lock/security bits help protect firmware and maintain system stability.

Why Choose AT91SAM9XE256B-CU?

The AT91SAM9XE256B-CU positions a proven ARM926EJ-S core with comprehensive on-chip memory and a wide peripheral set into a compact industrial-grade package. It is suited to embedded designs that need deterministic processing at 180 MHz alongside integrated Ethernet and USB connectivity, image and display interfaces, and expandable external memory via EBI.

For engineers building industrial controllers, networked devices, HMIs or imaging front-ends, this part combines system integration and rugged operating range to simplify board design and accelerate product development.

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