AT91SAM9N12-CU

The AT91SAM9N12-CU is a single-core, 32-bit microprocessor based on the ARM926EJ-S core running at up to 400 MHz. It integrates a rich set of memory controllers, high-speed peripherals and user-interface controllers targeted at industrial embedded applications requiring display support, high data-rate connectivity and flexible memory options.

Designed for industrial use, the device combines on-chip boot ROM and SRAM, a multi-layer bus architecture with DMA support, and extensive peripheral interfaces to simplify system design and accelerate time-to-market.

Key Features

• Core & Performance ARM926EJ-S single 32-bit core up to 400 MHz with 16 KB instruction and 16 KB data caches and an MMU for embedded application performance.
• Memory Subsystem On-chip 128 KB internal ROM and 32 KB internal SRAM with single-cycle access, plus a 32-bit external bus interface supporting 8-bank DDR2/LPDDR and SDR memories; MLC/SLC NAND controller with up to 24-bit programmable multi-bit ECC.
• Memory Controller Compatibility Dedicated controllers and support for LPDDR, LPDDR2, DDR2, SDR and SRAM devices to accommodate a broad range of external memory configurations.
• Display & HMI Integrated LCD controller and resistive touchscreen support for building human-machine interfaces and display-equipped control panels.
• Connectivity & Peripherals Two USB 2.0 ports, SDIO, multiple UARTs, SPI and I2C interfaces, plus EBI/EMI for external peripheral expansion and high-speed I/O connectivity.
• System Architecture & DMA 133 MHz multi-layer bus architecture with multiple DMA channels and distributed memory to sustain high bandwidth for the CPU and peripherals.
• Power Management & RTC Integrated power-on reset, reset controller, shut down controller with battery backup registers, watchdog, real-time clock and multiple low-power oscillator options for optimized power profiles.
• Security & Boot Embedded True Random Number Generator (TRNG) and a standard boot ROM for secure key generation and standard bootstrap functionality.
• Package & Environmental 217-ball LFBGA (15 × 15 mm) surface-mount package, industrial operating temperature range of −40 °C to 85 °C, and RoHS compliant.

Typical Applications

• Industrial Human-Machine Interfaces — Drive LCD touch panels and control logic for industrial HMIs using the integrated display controller and touchscreen support.
• Embedded Connectivity Appliances — Implement USB-host/device and SDIO-enabled connectivity in gateways, routers or protocol converters using the dual USB 2.0 ports and high-speed interfaces.
• Data Acquisition & Storage Systems — Manage NAND flash or external DDR/LPDDR memory for logging and storage applications leveraging the NAND controller with programmable ECC and wide memory support.
• Industrial Control & Monitoring — Run control firmware with real-time requirements using the ARM926EJ-S core, DMA channels and multi-layer bus for deterministic peripheral transfers.

Unique Advantages

• High-performance ARM core: 400 MHz ARM926EJ-S with instruction and data caches and MMU enables robust embedded application processing.
• Flexible memory ecosystem: On-chip ROM/SRAM plus support for LPDDR/LPDDR2/DDR2/SDR and NAND with PMECC simplifies selection of memory technologies across designs.
• Integrated HMI and connectivity: Built-in LCD and touchscreen controllers together with dual USB 2.0 ports reduce external component count for display-driven, connected products.
• System-level throughput: Multi-layer 133 MHz bus architecture and multiple DMA channels sustain high-bandwidth transfers between CPU, memory and peripherals.
• Industrial-ready packaging and temperature range: 217-LFBGA surface-mount package and −40 °C to 85 °C operating range support deployment in industrial environments.
• Security-oriented hardware: Embedded True Random Number Generator and standard boot ROM provide hardware primitives for secure key operations and standard bootstrap.

Why Choose AT91SAM9N12-CU?

The AT91SAM9N12-CU brings together a 400 MHz ARM926EJ-S core, a versatile memory interface set, integrated display and connectivity peripherals, and industrial-grade operating range to address embedded designs that require balanced compute performance and system integration. Its on-chip ROM, SRAM and multi-layer bus with DMA simplify system architecture while supporting high data-rate peripherals.

Backed by Microchip Technology and provided in a compact 217-LFBGA package, the AT91SAM9N12-CU is suitable for engineers building industrial HMI systems, connectivity appliances and storage-capable embedded platforms that need reliable operation across a wide temperature range.

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