AT91SAM9G20B-CFU

The AT91SAM9G20B-CFU is an industrial-grade embedded microprocessor featuring a single ARM926EJ-S 32-bit core running at 400 MHz. It integrates high-speed system busses, on-chip memories and a broad set of peripherals—making it suitable for embedded designs that require network, USB and memory interfacing.

Designed for industrial use, the device combines a high-performance CPU core with dedicated interfaces for Ethernet, USB, image sensors and external memory, enabling compact, integrated system designs with a reduced bill of materials.

Key Features

• Core and Performance  ARM926EJ-S 32-bit processor core with a CPU frequency of 400 MHz and on-chip MMU and debug support.
• On-chip Memory  Includes a 64-Kbyte internal ROM and two 16-Kbyte internal SRAM blocks for fast single-cycle access at maximum matrix speed.
• Memory Controllers & External Bus (EBI/EMI)  External Bus Interface supports SDRAM and static memories, ECC-enabled SLC NAND Flash and CompactFlash, plus SDRAM and SRAM controllers.
• Ethernet  Integrated 10/100 Mbps Ethernet MAC with dedicated DMA channels and 128-byte FIFOs for receive and transmit.
• USB 2.0 Connectivity  One USB 2.0 Full Speed (Device) port with on-chip transceiver and dual-port USB 2.0 Full Speed Host controller with integrated FIFOs and DMA channels.
• Peripherals  Standard peripherals include USART, SPI, TWI, Timer Counters, Synchronous Serial Controller (SSC), ADC and MultiMedia Card Interface.
• Image Sensor Interface  ITU-R BT.601/656 external interface with 12-bit data input, programmable frame capture, preview path with scaler and YCbCr support for image capture applications.
• System Architecture  Six 32-bit layer bus matrix providing increased internal bandwidth, boot mode select and remap command support.
• Clock and Power Management  Integrated clock generator, multiple PLL options and a power management controller with software programmable power optimization modes.
• Package and Temperature  247-TFBGA (10 × 10 mm) surface-mount package; industrial operating temperature range of −40 °C to 85 °C.
• Grade and Compliance  Industrial grade device; RoHS compliant.

Typical Applications

• Industrial Control  Real-time control and monitoring systems leveraging the 400 MHz ARM core, multiple serial interfaces and industrial temperature rating.
• Networking and Connectivity Appliances  Embedded gateways, controllers or devices requiring integrated 10/100 Ethernet and USB host/device connectivity.
• Imaging and Sensor Capture  Camera modules and image acquisition systems using the dedicated image sensor interface, scaler and 12-bit data path.
• Storage and Memory-Intensive Systems  Designs that need external SDRAM, NAND Flash with ECC or CompactFlash support via the robust External Bus Interface.

Unique Advantages

• High single-core processing throughput: 400 MHz ARM926EJ-S core provides ample processing headroom for embedded control and media tasks.
• Broad on-chip peripheral set: Integrated Ethernet MAC, USB device and dual-port host controllers, ADC and multiple serial interfaces reduce external component count.
• Flexible memory interfacing: EBI supports SDRAM, static memories, ECC-enabled NAND Flash and CompactFlash for diverse storage and performance requirements.
• Image capture capability: Dedicated ITU-R BT.601/656 interface and preview scaler enable direct connection to image sensors without heavy external logic.
• Industrial robustness: Industrial temperature range (−40 °C to 85 °C) and surface-mount 247-TFBGA package suit demanding embedded environments.
• Integrated system management: Bus matrix, clock generator and power management controller support scalable performance and power optimization.

Why Choose AT91SAM9G20B-CFU?

The AT91SAM9G20B-CFU positions itself as a highly integrated industrial microprocessor combining a 400 MHz ARM926EJ-S core with extensive on-chip peripherals and flexible external memory support. Its combination of Ethernet, USB host/device, image sensor interface and a multi-layer bus matrix makes it suitable for compact embedded designs that require both performance and peripheral density.

This device is ideal for engineers and designers building industrial controls, networked embedded appliances, image capture systems and memory-rich applications who need a single-chip solution with a clear specification set and long-term deployment suitability under industrial temperature conditions.

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