AT91SAM9CN12B-CFUR

The AT91SAM9CN12B-CFUR is a single-core, 32-bit microprocessor based on the ARM926EJ-S core running at up to 400 MHz. It combines user-interface peripherals and high-speed connectivity with flexible memory interfaces to support embedded applications that require secure boot, fast I/O and industrial-grade operation.

Designed for embedded and industrial markets, the device targets systems requiring LCD/touchscreen support, multiple high-speed interfaces and hardware-based security, while offering a compact 247-ball LFBGA (10×10) surface-mount package and extended temperature operation.

Key Features

• Core and Performance ARM926EJ-S core running up to 400 MHz with instruction and data caches and an MMU for efficient 32-bit processing.
• Memory and Storage Interfaces 32-bit External Bus Interface supporting LPDDR, LPDDR2, DDR2, SDR and SRAM; integrated MLC/SLC NAND controller with programmable multibit ECC for robust storage support. Includes one 128-Kbyte internal ROM and one 32-Kbyte internal SRAM.
• Display and HMI On-chip LCD controller and resistive touchscreen support for user-interface applications.
• Connectivity Dual USB 2.0 ports (Host and Device/full-speed) plus SDIO and multiple UART/SPI/I2C interfaces for high data-rate external communication.
• Security and Cryptography On-chip hardware accelerators supporting AES (up to 256-bit) and FIPS-180-2 compliant SHA1/SHA256, plus a True Random Number Generator and device fuse bits for crypto key and configuration. SAM9CN12 includes a secure Boot ROM.
• System and DMA Internal 133 MHz multi-layer bus architecture with an eight-channel DMA controller and distributed memory to sustain processor and peripheral bandwidth.
• Power Management and Low-Power Modes Clock gating, shutdown controller, battery backup support, internal low-power oscillators and programmable power optimization features for reduced power in active and standby modes.
• Package and Environmental 247-ball LFBGA (10×10) surface-mount package, industrial grade with operating temperature range –40°C to 85°C and RoHS compliance.
• Additional Interfaces External Bus Interface (EBI/EMI) for flexible system expansion and peripheral connectivity.

Typical Applications

• Industrial HMI Drive touchscreen and LCD-based operator panels where integrated display controllers and extended temperature range are required.
• Secure Embedded Systems Implement secure boot and on-chip cryptography for authenticated firmware and protected data exchange using the TRNG and hardware AES/SHA accelerators.
• Connectivity Gateways Act as a protocol and data-aggregation engine with multiple USB ports, SDIO and serial interfaces for high-rate data transfer and peripheral connectivity.
• Storage-Enabled Embedded Devices Use the NAND controller with programmable ECC and external DDR/LPDDR support for applications requiring local flash storage and fast memory access.

Unique Advantages

• Integrated security stack: Secure Boot ROM on SAM9CN12, AES/SHA accelerators and TRNG provide on-chip building blocks for secure device authentication and data protection.
• Flexible memory options: Support for LPDDR/LPDDR2, DDR2, SDR and SRAM plus an MLC/SLC NAND controller simplifies design choices across performance and cost trade-offs.
• Rich I/O and connectivity: Dual USB 2.0, SDIO and multiple serial interfaces reduce external components and streamline system architecture for connected products.
• Performance with efficient data movement: Multi-layer AHB bus and an eight-channel DMA controller sustain high peripheral and memory throughput without burdening the CPU.
• Industrial readiness: Industrial-grade temperature range (–40°C to 85°C) and a compact 247-LFBGA package support space-constrained, ruggedized designs.
• Power management features: On-chip clock/power controllers, shutdown modes and low-power oscillators enable optimized power consumption in active and standby states.

Why Choose AT91SAM9CN12B-CFUR?

The AT91SAM9CN12B-CFUR positions itself as a versatile embedded MPU for developers who need a balanced combination of processing performance, secure boot capability and abundant I/O in a compact industrial package. Its ARM926EJ-S core at 400 MHz, integrated display and connectivity peripherals, and flexible memory interfaces make it suitable for human-machine interfaces, secure appliances and communication gateways.

Backed by Microchip Technology and documented in the SAM9N/SAM9CN series datasheet, this device delivers a clear migration path for designs that require on-chip cryptography, deterministic DMA-driven data handling and robust operation across industrial temperature ranges.

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