AT91SAM9G20B-CU-999

The AT91SAM9G20B-CU-999 is an embedded microprocessor featuring an Arm926EJ‑S core running at 400 MHz, designed for industrial embedded applications. It combines a high‑performance CPU with integrated peripherals—including Ethernet MAC, USB host/device controllers, memory controllers and a flexible external bus interface—to simplify system design and accelerate time to market.

Built on the SAM9G series architecture from Microchip Technology, this MPU targets networked and I/O‑rich systems that require deterministic control, peripheral integration and industrial temperature operation.

Key Features

• Core and Performance Arm926EJ‑S processor core operating at 400 MHz with instruction and data cache (32 KB each) and a write buffer; includes MMU and EmbeddedICE debug support for development and system control.
• On‑chip Memory Integrated nonvolatile and SRAM resources including one 64‑Kbyte internal ROM and two 16‑Kbyte internal SRAM blocks with single‑cycle access at maximum matrix speed.
• Memory Controllers & External Bus (EBI) External Bus Interface supports SDRAM and static memories as well as ECC‑enabled SLC NAND Flash and CompactFlash®, enabling flexible external memory configurations.
• Ethernet and USB 10/100 Mbps Ethernet MAC with 128‑byte FIFOs and dedicated DMA channels; USB 2.0 full‑speed support with one device port and dual‑port host capability, on‑chip transceivers and integrated DPRAM (2,432 bytes configurable).
• Image Sensor and Peripherals Image Sensor Interface with ITU‑R BT.601/656 support, 12‑bit data interface and preview scaler; standard peripherals include USART, SPI, TWI, ADC, Timer Counters and MMC interface.
• High‑bandwidth Bus Matrix Six 32‑bit layer matrix architecture delivering a wide internal bandwidth and supports a remap/boot mode for flexible startup configurations.
• Clocking & Power Management Integrated clock generator with selectable low‑power oscillators, multiple PLLs (including one up to 800 MHz and one up to 100 MHz) and a Power Management Controller with software programmable power optimization.
• Package, Mounting & Temperature 217‑LFBGA (15 × 15 mm) surface‑mount package, industrial grade operation from –40 °C to 85 °C for deployment in demanding environments.

Typical Applications

• Industrial Control and Automation Networked controllers and I/O gateways leveraging integrated Ethernet, robust memory interfaces and industrial temperature capability.
• Networked Embedded Devices Devices requiring 10/100 Mbps connectivity and USB host/device support for peripheral attachment and data transfer.
• Imaging and Vision Modules Camera and sensor subsystems using the Image Sensor Interface for frame capture, preview scaling and YCbCr formats.
• Multimedia and Storage Interfaces Systems that combine external memory, CompactFlash® or NAND storage with high‑speed peripheral interfaces.

Unique Advantages

• Integrated Communications Stack: Combines Ethernet MAC and dual USB 2.0 ports on‑chip to reduce external components and simplify board layout.
• High System Throughput: Six‑layer 32‑bit matrix and a 400 MHz ARM core provide strong internal bandwidth for concurrent peripheral and memory traffic.
• Flexible Memory Support: EBI that accommodates SDRAM, static memories and ECC‑enabled NAND enables scalable storage and system memory choices.
• Development and Debug Support: EmbeddedICE and debug communication channel support simplify bring‑up and in‑system debugging.
• Industrial‑Grade Reliability: Rated for –40 °C to 85 °C operation and supplied in a compact 217‑LFBGA package suitable for surface‑mount production.

Why Choose AT91SAM9G20B-CU-999?

The AT91SAM9G20B-CU-999 positions itself as a performance‑focused, highly integrated MPU for embedded designs that demand network connectivity, extensive peripheral integration and flexible memory options. With a 400 MHz Arm926EJ‑S core, a broad set of on‑chip peripherals and a six‑layer bus matrix, it helps shorten system design cycles while delivering deterministic control and I/O throughput.

Ideal for engineers building industrial controllers, networked appliances, imaging modules or storage‑enabled embedded systems, this device is backed by Microchip Technology documentation and design resources to support long‑term deployment and scalable designs.

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