AT91SAM9XE256-CU

The AT91SAM9XE256-CU is a single‑core 32‑bit microprocessor based on the ARM926EJ‑S core, running at 180 MHz and delivering up to 200 MIPS. Designed for embedded and industrial applications, it combines on‑chip memories, a broad set of peripheral interfaces and integrated system controllers to support networked, display and imaging systems.

With industrial temperature rating and a compact 217‑ball LFBGA (15×15) package, this device targets embedded designs requiring integrated USB, Ethernet, display and camera interfaces alongside flexible memory expansion via an External Bus Interface (EBI).

Key Features

• Core & Performance ARM926EJ‑S processor core, single 32‑bit core at 180 MHz providing up to 200 MIPS; includes MMU, DSP instruction extensions, Jazelle Java acceleration, EmbeddedICE debug support, 8 KB data cache, 16 KB instruction cache and write buffer.
• Internal Memory Integrated memories for the AT91SAM9XE256 variant: one 32 KB internal ROM, one 32 KB internal SRAM and 256 KB internal high‑speed flash organized in 512 pages of 512 bytes. Flash characteristics include 45 ns read time, ~4 ms page programming (including auto‑erase), ~10 ms full erase, 10,000 write cycles and 10 years data retention, plus page lock and security bit support.
• External Memory & Bus External Bus Interface (EBI) supports SDRAM, static memories, ECC‑enabled NAND Flash and CompactFlash™, enabling flexible memory expansion and system storage options.
• USB & On‑chip DPRAM USB 2.0 Full‑Speed device port with on‑chip transceiver and a configurable 2,688‑byte DPRAM; 217‑ball LFBGA package provides dual USB host ports with dedicated FIFOs and DMA channels.
• Ethernet & Networking Integrated 10/100 Base‑T Ethernet MAC with MII or RMII interface, 128‑byte FIFOs and dedicated DMA channels for transmit and receive.
• Imaging & Display Image Sensor Interface supporting ITU‑R BT.601/656 with programmable frame capture, 12‑bit data interface and preview/scaler; on‑chip display controllers for LCD and touchscreen support.
• System & Power Management Comprehensive system controller including reset and shutdown controllers, power management controller with power optimization modes, periodic interval timer, watchdog and real‑time timers, plus four 32‑bit battery backup registers.
• Clocking & Debug On‑chip oscillators (including 3–20 MHz), up to 240 MHz PLL and a secondary PLL up to 100 MHz; debug unit and debug communication channel support for development and system validation.
• Package & Temperature 217‑LFBGA (15×15) surface‑mount package; industrial operating temperature range of −40 °C to +85 °C.

Typical Applications

• Industrial HMI and Control Drives LCD and touchscreen interfaces while handling control tasks, on‑board flash and external memory options simplify firmware and data storage.
• Embedded Networking & Gateways Integrated Ethernet MAC and USB host/device capabilities enable networked controllers, protocol converters and gateway devices.
• Imaging and Machine Vision Image Sensor Interface and preview scaler support camera interfacing for surveillance, inspection or embedded vision applications.
• Portable and Handheld Devices Compact LFBGA package, integrated memories and peripheral set suit compact, rugged embedded products requiring connectivity and display.

Unique Advantages

• High single‑core throughput: ARM926EJ‑S at 180 MHz delivering up to 200 MIPS for responsive control and data processing.
• Integrated non‑volatile storage: 256 KB of internal high‑speed flash with EEFC features reduces external memory needs and simplifies firmware management.
• Rich peripheral set: USB host/device, 10/100 Ethernet MAC, image sensor interface and LCD/touchscreen controllers reduce external component count for connected multimedia systems.
• Flexible memory expansion: External Bus Interface supports SDRAM, NAND (ECC‑enabled) and CompactFlash integration for scalable storage and working memory.
• Industrial‑grade operation: −40 °C to +85 °C rating and 217‑LFBGA packaging for deployment in demanding embedded environments.
• Development and debug support: EmbeddedICE, debug communication channel and comprehensive system controllers ease bring‑up and validation.

Why Choose AT91SAM9XE256-CU?

The AT91SAM9XE256‑CU positions itself as a compact, industrial‑grade embedded microprocessor that combines a proven ARM926EJ‑S core with a rich set of integrated peripherals and onboard memory. Its mix of USB, Ethernet, imaging and display interfaces, together with flexible external bus support, makes it suitable for networked multimedia and control applications that need a tightly integrated solution.

Designs benefiting from this device include industrial HMI, communication gateways and imaging systems that require deterministic performance, onboard flash storage and broad peripheral integration to reduce BOM complexity and shorten development time.

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