AT91SAM9XE128-QU

The AT91SAM9XE128-QU is an ARM926EJ-S 32-bit microprocessor IC running at 180 MHz in a 208-PQFP (28×28) package. It is targeted at embedded and industrial applications that require a single-core ARM processor with integrated memory and a broad set of on-chip peripherals.

Designed for systems needing performance and integration, the device combines processor features, internal flash and SRAM, and multiple interfaces (USB, Ethernet, display and image sensor support) to simplify board-level design and reduce BOM complexity.

Key Features

• Core  ARM926EJ-S processor core, single 32-bit core at 180 MHz delivering up to 200 MIPS; includes DSP instruction extensions, ARM Jazelle technology for Java acceleration, 8 KB data cache, 16 KB instruction cache and a write buffer.
• Integrated Memory  One 32 KB internal ROM and 16 KB internal SRAM for the AT91SAM9XE128 device; 128 KB of internal high-speed flash organized in 256 pages of 512 bytes, with 45 ns fast read time, 4 ms page programming (including auto-erase), 10 ms full erase, 10,000 write cycles and 10 years data retention.
• Enhanced Flash Controller  Embedded Enhanced Embedded Flash Controller (EEFC) with 128-bit wide access to improve flash performance in ARM and Thumb modes and support flash security and page lock capabilities.
• Display and Imaging  On-chip support for LCD and touchscreen controllers plus an Image Sensor Interface (ITU-R BT.601/656 compatible) with 12-bit data interface, programmable frame capture and a preview path with scaler supporting YCbCr format.
• USB and Storage Interfaces  USB 2.0 Full Speed device port with on-chip transceiver and 2,688-byte configurable DPRAM; single USB Host port available in the 208-pin PQFP variant. External Bus Interface (EBI) supports SDRAM, static memories, ECC-enabled NAND flash and CompactFlash.
• Networking  Integrated Ethernet MAC 10/100 Base-T with MII or Reduced MII options, 128-byte FIFOs and dedicated DMA channels for efficient packet transmit/receive.
• System and Peripherals  Six-layer 32-bit Bus Matrix, Advanced Interrupt Controller (vectored, multi-level priority), Debug Unit (2-wire UART, debug communication channel), Periodic Interval Timer, Watchdog and Real-time Timer.
• Clock and Power Management  Clock generator with selectable 32.768 kHz low-power oscillator or internal RC for battery backup, 3–20 MHz on-chip oscillator, plus PLLs (one up to 240 MHz, one up to 100 MHz) and a Power Management Controller offering software-programmable power optimization.
• Packaging and Environmental  208-PQFP (28×28) surface-mount package, industrial grade operation with operating temperature range of −40 °C to 85 °C.
• Graphics Acceleration  No dedicated graphics acceleration—suitable for applications that rely on CPU-driven display control or external graphics support.

Typical Applications

• Industrial Control Panels  Use the on-chip LCD/touchscreen controller and industrial temperature rating for human-machine interfaces and operator panels.
• Embedded Networking and Gateways  Integrated 10/100 Ethernet MAC and USB host/device support make it suitable for protocol gateways, asset controllers and networked instrumentation.
• Imaging and Vision Modules  Image Sensor Interface with 12-bit data support and preview/scaler path enables frame capture and basic image preprocessing for machine vision or camera modules.
• Storage and Memory Expansion  EBI support for NAND flash and CompactFlash enables local mass-storage or booting options with the on-chip flash and EEFC for in-field reprogramming.

Unique Advantages

• Highly integrated memory subsystem: Internal ROM, SRAM and 128 KB high-speed flash reduce external memory needs and simplify boot and firmware storage.
• Balanced processing performance: ARM926EJ-S at 180 MHz with caches and a write buffer delivers up to 200 MIPS for embedded workloads while supporting DSP extensions.
• Rich peripheral set on-chip: USB device and host capability, Ethernet MAC, image sensor interface, EBI and display controllers minimize the external component count for connectivity and I/O.
• Embedded flash management: EEFC with wide 128-bit access and defined programming/erase metrics enables predictable in-system firmware updates and secure storage options.
• Industrial-ready packaging and temperature range: 208-PQFP surface-mount package and −40 °C to 85 °C operating range support deployment in industrial environments.

Why Choose AT91SAM9XE128-QU?

The AT91SAM9XE128-QU delivers a compact, single-chip solution for embedded and industrial designs that need a capable 32-bit ARM926EJ-S processor coupled with on-chip flash, ROM and SRAM. Its integrated peripherals—USB host/device, Ethernet MAC, image sensor interface, display controllers and a flexible external bus—allow designers to consolidate functionality and shorten development cycles.

For projects that require industrial temperature capability and a well-rounded set of system controllers (power management, clocking, debug and interrupt handling), the AT91SAM9XE128-QU offers a practical combination of performance and integration, helping teams optimize board area and BOM while retaining predictable flash behavior and system-level features.

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