AT91SAM9G35-CU-999

The AT91SAM9G35-CU-999 is a 32-bit embedded microprocessor based on the ARM926EJ-S core running at up to 400 MHz. Designed for industrial applications, the device integrates high-bandwidth memory interfaces, multiple peripheral connectivity options and display/touchscreen support to address user interfaces, communications and data acquisition designs.

Typical markets include building automation, data logging, point-of-sale systems, alarm systems and medical equipment where a balance of processing performance, peripheral integration and industrial temperature operation is required.

Key Features

• Core ARM926EJ-S 32-bit processor core operating up to 400 MHz with instruction and data caches and MMU for embedded OS support.
• Memory and Boot Internal ROM and SRAM for bootstrap and runtime; external memory support includes DDR2/LPDDR, SDRAM/LPSDR and static memories with an External Bus Interface and NAND controller featuring programmable multi-bit ECC.
• Display and Touch Integrated LCD controller with multi-layer overlay and 2D acceleration plus a 10-bit ADC supporting 4‑wire or 5‑wire resistive touchscreen panels for advanced HMI designs.
• Connectivity 10/100 Mbps Ethernet MAC and multiple USB interfaces (High Speed device, High Speed host and Full Speed host) plus SD/SDIO/MMC hosts, USARTs, SPIs, I2S and TWIs for flexible I/O and storage options.
• DMA and System Bandwidth Multi-layer AHB bus matrix with dual 8-channel DMA controllers and dedicated DMA for peripherals to ensure high-throughput transfers with minimal processor overhead.
• Peripheral Controllers External Bus Interface (EBI/EMI), NAND controller with up to 24-bit programmable PMECC, SD/MMC hosts and multi-channel timers for system control and storage.
• Power and Clock Integrated PLLs including a 480 MHz PLL optimized for USB, power management controller, shutdown modes and low-power oscillators to manage system power states.
• Package and Temperature 217-ball LFBGA package (15 × 15 mm) with surface-mount mounting; industrial operating temperature range from −40 °C to 85 °C.
• Industrial Grade Specified for industrial applications and packaged for deployment in rugged embedded systems.

Typical Applications

• Building Automation Drives visualization and control nodes with integrated Ethernet, display controller and real-time interfaces for monitoring and control.
• Data Loggers Provides storage interfaces, high-throughput DMA and robust memory controllers to capture and manage sensor data over long periods.
• Point-of-Sale (POS) Systems Combines touchscreen display support, multiple USB hosts and Ethernet connectivity for interactive terminals and peripheral integration.
• Alarm and Security Systems Offers reliable network connectivity, multiple serial interfaces and industrial temperature range for continuous monitoring applications.
• Medical Equipment Enables user interfaces and data communications with integrated ADC touchscreen support and comprehensive peripheral connectivity.

Unique Advantages

• High-performance ARM core: 400 MHz ARM926EJ-S provides deterministic 32-bit processing for embedded OS and control tasks.
• Integrated display and touchscreen support: Built-in LCD controller with overlay and 2D acceleration plus 10-bit ADC for resistive touch panels reduces external component count for HMIs.
• Extensive external memory support: DDR2/LPDDR, SDRAM and NAND controllers with PMECC give flexible options for high-capacity and high-bandwidth storage.
• Comprehensive connectivity: Ethernet MAC, three USB 2.0 interfaces and multiple serial/peripheral buses simplify system integration for networking and I/O.
• Designed for throughput: Multi-layer AHB matrix and dedicated DMA channels minimize CPU overhead during large data transfers.
• Industrial-ready packaging and range: 217-ball LFBGA package and −40 °C to 85 °C operating range support deployment in industrial environments.

Why Choose AT91SAM9G35-CU-999?

The AT91SAM9G35-CU-999 combines a 400 MHz ARM926EJ-S core with integrated display, storage and connectivity subsystems to deliver a highly integrated MPU suitable for industrial HMI, networking and data acquisition designs. Its memory interface flexibility, dedicated DMA architecture and peripheral set enable robust, high-throughput embedded systems with reduced external BOM.

Manufactured by Microchip Technology and targeted at industrial applications, the device is appropriate for designers seeking a balance of processing performance, interface density and long-term deployment capability in industrial temperature environments.

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