AT91SAM9CN11-CU

The AT91SAM9CN11-CU is a 32-bit embedded microprocessor based on the ARM926EJ-S core, running at 400 MHz in a single-core configuration. Designed for embedded and industrial applications, it combines processing performance with rich connectivity, memory and user-interface support for systems requiring LCD/touchscreen display control, USB connectivity and high-speed memory interfaces.

This device delivers an integrated platform-level feature set—including support for LPDDR/DDR2 and NAND, USB Host and Device, advanced security accelerators and a multi-layer bus with DMA—to simplify system design and accelerate time to market in industrial and embedded designs.

Key Features

• Core  ARM926EJ-S 32-bit processor running up to 400 MHz with instruction and data caches and an MMU for embedded OS support.
• Memory Interfaces  External memory support for LPDDR, LPDDR2, DDR2, SDR and SRAM plus an external bus interface supporting 8-bank DDR2/LPDDR and static memories; on-chip 128 KB ROM and 32 KB SRAM are included in the architecture.
• Display and HMI  Integrated LCD controller and resistive touchscreen support for user-interface applications.
• Connectivity  Two USB 2.0 full-speed interfaces (Host and Device), SDIO and multiple UART/SPI/I²C peripherals for broad I/O connectivity.
• Security and Acceleration  On-chip hardware accelerators supporting up to 256-bit AES and FIPS 180-2 compliant SHA1/SHA256, plus a True Random Number Generator (TRNG) and fuse bits for user and device configuration.
• System and DMA  133 MHz multi-layer AHB bus architecture with dual peripheral bridge and an 8-channel dual-port DMA controller to sustain high peripheral and memory throughput.
• Power and Clocks  Integrated power-on reset, reset and shutdown controllers, watchdog, RTC, internal low-power 32 kHz RC and fast 12 MHz RC oscillators, plus PLLs for system and USB clocking.
• Package and Temperature  217-ball LFBGA (15×15) surface-mount package; industrial operating temperature range −40 °C to 85 °C.
• Peripheral Storage Support  MLC/SLC NAND controller with programmable multi-bit ECC (PMECC) for robust flash storage implementations.

Typical Applications

• Industrial HMI and Control Panels  Use the integrated LCD controller and touchscreen support to implement user interfaces while leveraging industrial temperature rating for harsh environments.
• Embedded Connectivity Gateways  USB Host/Device, SDIO and multiple serial interfaces enable gateway designs that bridge sensors, storage and host systems.
• Secure Embedded Storage and Authentication  Hardware AES/SHA accelerators and TRNG support secure boot, encryption and authentication for devices handling sensitive data.
• Multimedia and Display Systems  The processor and memory interface support enable display-driven embedded applications requiring responsive UI and data throughput.

Unique Advantages

• Single-chip integration: Combines CPU, memory controllers, display and USB peripherals to reduce BOM and simplify board design.
• High data-path throughput: Multi-layer AHB bus with 8-channel DMA sustains data movement between peripherals and external memory without overloading the CPU core.
• Security primitives on-chip: AES and SHA accelerators plus a TRNG and configurable fuse bits facilitate secure storage and communications designs.
• Flexible memory support: Native support for LPDDR/DDR2/SDR and NAND expands choices for performance and cost-optimized memory architectures.
• Industrial-grade operation: Specified −40 °C to 85 °C and available in a compact 217-LFBGA package suitable for space-constrained, ruggedized products.

Why Choose AT91SAM9CN11-CU?

The AT91SAM9CN11-CU positions itself as a versatile embedded MPU that balances up to 400 MHz ARM926EJ-S processing performance with an extensive set of on-chip peripherals and memory interfaces. Its integrated security accelerators, DMA-capable system bus and dedicated display and USB controllers make it well suited for industrial HMI, secure storage and connectivity-focused designs.

This device is targeted at engineers and product teams building industrial and embedded systems that require sustained data throughput, on-chip security features and flexible memory connectivity, while keeping board complexity and component count under control.

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