AT91SAM9CN12B-CU

The AT91SAM9CN12B-CU is a single-core ARM926EJ-S 32-bit microprocessor running up to 400 MHz in a 217-ball LFBGA (15×15) package. It targets embedded designs that require a blend of user-interface capability, high-speed connectivity and memory flexibility.

This industrial-grade device integrates processors and peripheral controllers suitable for applications that need LCD and touchscreen support, multiple serial interfaces, USB Host/Device, and support for modern external memories such as LPDDR/DDR2 and NAND Flash.

Key Features

• Core ARM926EJ-S 32-bit core operating up to 400 MHz with instruction and data caches and an MMU.
• Memory and Storage Interfaces 32-bit External Bus Interface supporting LPDDR, LPDDR2, DDR2, SDR and SRAM; integrated MLC/SLC NAND controller with programmable ECC.
• On-chip Memory Internal 128 KB ROM (standard or secure bootstrap depending on variant) and 32 KB internal SRAM with single-cycle access at system speed.
• Connectivity Multiple serial interfaces including UARTs, SPI, I2C, SDIO and dual USB 2.0 full-speed ports (Host and Device capabilities).
• Display and HMI Integrated LCD controller and resistive touchscreen support for user-interface applications.
• Security and Cryptography On-chip hardware accelerators for AES (up to 256-bit), FIPS-compliant SHA1/SHA256, and a True Random Number Generator; secure Boot ROM available in the SAM9CN12 variant.
• DMA and System Bus Internal multi-layer bus architecture with an 8-channel dual-port DMA controller to sustain high data bandwidth to peripherals.
• Power and Clocking Integrated clock generator and power management features including low-power oscillators, PLLs (including USB-optimized PLL) and shutdown controller for reduced power in standby modes.
• Package and Environmental 217-LFBGA (15×15) surface-mount package with industrial operating temperature range of −40°C to 85°C; RoHS compliant.
• Additional Interfaces External Bus Interface (EBI/EMI) for flexible peripheral and memory expansion; mounting type: surface mount.

Typical Applications

• Human–Machine Interfaces (HMIs) Drive LCD panels and resistive touchscreens while managing application logic and connectivity for operator displays and control panels.
• Secure Embedded Systems Implement secure boot and on-chip cryptographic operations (AES, SHA, TRNG) for systems that require encrypted storage or authenticated communications.
• Connectivity Gateways and Peripherals Use dual USB 2.0 ports, SDIO and multiple serial buses to build USB-enabled devices, data gateways, or peripheral controllers.
• Memory-Intensive Controllers Support LPDDR/DDR2 and NAND Flash interfaces for designs that need external program and data storage with ECC-managed NAND operation.

Unique Advantages

• Single-chip integration of UI and connectivity: Combines LCD/touchscreen controllers with multiple serial interfaces and USB, reducing external component count for UI-driven embedded products.
• Flexible memory support: Native LPDDR/LPDDR2/DDR2/SDR and NAND controllers simplify board-level memory choices and enable high-capacity external storage.
• Built-in security primitives: Hardware AES and SHA accelerators plus a True Random Number Generator and secure Boot ROM (SAM9CN12) support secure application deployment.
• Designed for industrial environments: Rated for −40°C to 85°C operation and supplied in a compact 217-LFBGA package suitable for surface-mount manufacturing.
• DMA-driven high throughput: Multi-layer bus with an 8-channel DMA controller supports sustained data movement between peripherals and memory.
• Standards-aligned connectivity: Dual USB 2.0 full-speed ports and common serial protocols (UART, SPI, I2C, SDIO) make integration with existing peripherals straightforward.

Why Choose AT91SAM9CN12B-CU?

The AT91SAM9CN12B-CU positions itself as a versatile embedded MPU for designs that require a balance of user interface capability, flexible high-speed memory support, and integrated security features. Its ARM926EJ-S core at up to 400 MHz, combined with on-chip peripherals and DMA architecture, enables responsive application control while supporting demanding I/O and storage needs.

This industrial-grade device is suited for engineers developing HMIs, secure systems, or connectivity-focused products where consolidation of display, memory and peripheral interfaces into a single package reduces BOM complexity and streamlines system design. The combination of secure boot options, hardware cryptography and TRNG supports long-term product security requirements and deployment flexibility.

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